SERVER-36257 Remove copyDB and clone commands

69 files changed, 63 insertions, 2018 deletions

diff --git a/buildscripts/resmokeconfig/suites/causally_consistent_jscore_passthrough_auth.yml b/buildscripts/resmokeconfig/suites/causally_consistent_jscore_passthrough_auth.yml
index ecd9d15cd95..64969e5d3d5 100644
--- a/buildscripts/resmokeconfig/suites/causally_consistent_jscore_passthrough_auth.yml
+++ b/buildscripts/resmokeconfig/suites/causally_consistent_jscore_passthrough_auth.yml
@@ -18,7 +18,6 @@ selector:
   # Skip any tests that run with auth explicitly.
   - jstests/core/*[aA]uth*.js
   # Skip any tests that require privileges for non test databases.
-  - jstests/core/copydb.js
   - jstests/core/system_profile.js
   # Cannot specify afterClusterTime and afterOpTime.
   - jstests/core/read_after_optime.js
diff --git a/buildscripts/resmokeconfig/suites/replica_sets_auth_5.yml b/buildscripts/resmokeconfig/suites/replica_sets_auth_5.yml
index 2dffbbb53ea..1b37c762894 100644
--- a/buildscripts/resmokeconfig/suites/replica_sets_auth_5.yml
+++ b/buildscripts/resmokeconfig/suites/replica_sets_auth_5.yml
@@ -25,7 +25,6 @@ selector:
   - jstests/replsets/last_op_visible.js
   - jstests/replsets/sessions_collection_auto_healing.js
   - jstests/replsets/maintenance2.js
-  - jstests/replsets/copydb.js
   - jstests/replsets/sized_zero_capped.js
   - jstests/replsets/initial_sync_document_validation.js
   - jstests/replsets/commands_that_write_accept_wc.js
diff --git a/buildscripts/resmokeconfig/suites/replica_sets_auth_6.yml b/buildscripts/resmokeconfig/suites/replica_sets_auth_6.yml
index ee5047dd78a..2e450c9189f 100644
--- a/buildscripts/resmokeconfig/suites/replica_sets_auth_6.yml
+++ b/buildscripts/resmokeconfig/suites/replica_sets_auth_6.yml
@@ -52,7 +52,6 @@ selector:
   - jstests/replsets/initiate_prohibits_w0.js
   - jstests/replsets/single_server_majority.js
   - jstests/replsets/rslib.js
-  - jstests/replsets/cloneDb.js
   - jstests/replsets/two_nodes_priority_take_over.js
   - jstests/replsets/initial_sync_cloner_dups.js
   - jstests/replsets/find_and_modify_wc.js
diff --git a/buildscripts/resmokeconfig/suites/replica_sets_auth_misc.yml b/buildscripts/resmokeconfig/suites/replica_sets_auth_misc.yml
index a3a5cf32650..b4876dabc47 100644
--- a/buildscripts/resmokeconfig/suites/replica_sets_auth_misc.yml
+++ b/buildscripts/resmokeconfig/suites/replica_sets_auth_misc.yml
@@ -125,7 +125,6 @@ selector:
   - jstests/replsets/last_op_visible.js
   - jstests/replsets/sessions_collection_auto_healing.js
   - jstests/replsets/maintenance2.js
-  - jstests/replsets/copydb.js
   - jstests/replsets/sized_zero_capped.js
   - jstests/replsets/initial_sync_document_validation.js
   - jstests/replsets/commands_that_write_accept_wc.js
@@ -221,7 +220,6 @@ selector:
   - jstests/replsets/initiate_prohibits_w0.js
   - jstests/replsets/single_server_majority.js
   - jstests/replsets/rslib.js
-  - jstests/replsets/cloneDb.js
   - jstests/replsets/two_nodes_priority_take_over.js
   - jstests/replsets/initial_sync_cloner_dups.js
   - jstests/replsets/find_and_modify_wc.js
diff --git a/buildscripts/resmokeconfig/suites/replica_sets_ese_4.yml b/buildscripts/resmokeconfig/suites/replica_sets_ese_4.yml
index 3f52c8d2115..4dc399d7bea 100644
--- a/buildscripts/resmokeconfig/suites/replica_sets_ese_4.yml
+++ b/buildscripts/resmokeconfig/suites/replica_sets_ese_4.yml
@@ -44,7 +44,6 @@ selector:
   - jstests/replsets/initial_sync_oplog_rollover.js
   - jstests/replsets/rollback_drop_database.js
   - jstests/replsets/auth_no_pri.js
-  - jstests/replsets/cloneDb.js
   - jstests/replsets/slave_delay_clean_shutdown.js
   - jstests/replsets/rollback_drop_index_after_rename.js
   - jstests/replsets/reconfig.js
diff --git a/buildscripts/resmokeconfig/suites/replica_sets_ese_5.yml b/buildscripts/resmokeconfig/suites/replica_sets_ese_5.yml
index ab325e4baae..6258010f231 100644
--- a/buildscripts/resmokeconfig/suites/replica_sets_ese_5.yml
+++ b/buildscripts/resmokeconfig/suites/replica_sets_ese_5.yml
@@ -25,7 +25,6 @@ selector:
   - jstests/replsets/sessions_collection_auto_healing.js
   - jstests/replsets/get_replication_info_helper.js
   - jstests/replsets/maintenance2.js
-  - jstests/replsets/copydb.js
   - jstests/replsets/read_committed_lookup.js
   - jstests/replsets/initial_sync_update_missing_doc1.js
   - jstests/replsets/commands_that_write_accept_wc.js
diff --git a/buildscripts/resmokeconfig/suites/replica_sets_ese_misc.yml b/buildscripts/resmokeconfig/suites/replica_sets_ese_misc.yml
index 50df83f6be3..25c4069f197 100644
--- a/buildscripts/resmokeconfig/suites/replica_sets_ese_misc.yml
+++ b/buildscripts/resmokeconfig/suites/replica_sets_ese_misc.yml
@@ -98,7 +98,6 @@ selector:
   - jstests/replsets/initial_sync_oplog_rollover.js
   - jstests/replsets/rollback_drop_database.js
   - jstests/replsets/auth_no_pri.js
-  - jstests/replsets/cloneDb.js
   - jstests/replsets/slave_delay_clean_shutdown.js
   - jstests/replsets/rollback_drop_index_after_rename.js
   - jstests/replsets/reconfig.js
@@ -119,7 +118,6 @@ selector:
   - jstests/replsets/sessions_collection_auto_healing.js
   - jstests/replsets/get_replication_info_helper.js
   - jstests/replsets/maintenance2.js
-  - jstests/replsets/copydb.js
   - jstests/replsets/read_committed_lookup.js
   - jstests/replsets/initial_sync_update_missing_doc1.js
   - jstests/replsets/commands_that_write_accept_wc.js
diff --git a/buildscripts/resmokeconfig/suites/sharded_causally_consistent_jscore_passthrough.yml b/buildscripts/resmokeconfig/suites/sharded_causally_consistent_jscore_passthrough.yml
index 0c04ff9b07c..8df91eab2f0 100644
--- a/buildscripts/resmokeconfig/suites/sharded_causally_consistent_jscore_passthrough.yml
+++ b/buildscripts/resmokeconfig/suites/sharded_causally_consistent_jscore_passthrough.yml
@@ -15,15 +15,13 @@ selector:
   - jstests/core/apitest_db.js  # serverStatus output doesn't have storageEngine.
   - jstests/core/apitest_db_profile_level.js  # profiling.
   - jstests/core/apply_ops*.js  # applyOps, SERVER-1439.
-  - jstests/core/bypass_doc_validation.js  # copyDatabase
+  - jstests/core/bypass_doc_validation.js  # sharded $out output not permitted
   - jstests/core/capped*.js  # capped collections.
   - jstests/core/check_shard_index.js  # checkShardingIndex.
   - jstests/core/collection_truncate.js  # emptycapped.
   - jstests/core/compact_keeps_indexes.js  # compact.
   - jstests/core/currentop.js  # uses fsync.
-  - jstests/core/auth_copydb.js # copyDatabase.
   - jstests/core/collmod_without_uuid.js # applyOps, SERVER-1439
-  - jstests/core/copydb.js # copyDatabase.
   - jstests/core/dbadmin.js  # "local" database.
   - jstests/core/dbhash.js  # dbhash.
   - jstests/core/dbhash2.js  # dbhash.
diff --git a/buildscripts/resmokeconfig/suites/sharded_collections_jscore_passthrough.yml b/buildscripts/resmokeconfig/suites/sharded_collections_jscore_passthrough.yml
index e95109c3418..2d9980907f9 100644
--- a/buildscripts/resmokeconfig/suites/sharded_collections_jscore_passthrough.yml
+++ b/buildscripts/resmokeconfig/suites/sharded_collections_jscore_passthrough.yml
@@ -12,15 +12,13 @@ selector:
   - jstests/core/apitest_db_profile_level.js  # profiling.
   - jstests/core/apply_ops*.js  # applyOps, SERVER-1439.
   - jstests/core/awaitdata_getmore_cmd.js  # capped collections.
-  - jstests/core/bypass_doc_validation.js  # copyDatabase
+  - jstests/core/bypass_doc_validation.js  # sharded $out output not permitted
   - jstests/core/capped*.js  # capped collections.
   - jstests/core/check_shard_index.js  # checkShardingIndex.
   - jstests/core/collection_truncate.js  # emptycapped.
   - jstests/core/collmod_without_uuid.js # applyOps, SERVER-1439
   - jstests/core/compact_keeps_indexes.js  # compact.
   - jstests/core/currentop.js  # uses fsync.
-  - jstests/core/auth_copydb.js # copyDatabase.
-  - jstests/core/copydb.js # copyDatabase.
   - jstests/core/dbadmin.js  # "local" database.
   - jstests/core/dbhash.js  # dbhash.
   - jstests/core/dbhash2.js  # dbhash.
diff --git a/buildscripts/resmokeconfig/suites/sharding_14.yml b/buildscripts/resmokeconfig/suites/sharding_14.yml
index 8ed96377d76..8bbdae7b330 100644
--- a/buildscripts/resmokeconfig/suites/sharding_14.yml
+++ b/buildscripts/resmokeconfig/suites/sharding_14.yml
@@ -28,7 +28,6 @@ selector:
   - jstests/sharding/server_status.js
   - jstests/sharding/ssv_config_check.js
   - jstests/sharding/update_zone_key_range.js
-  - jstests/sharding/copydb_from_mongos.js
   - jstests/sharding/auth2.js
   - jstests/sharding/change_stream_update_lookup_collation.js
   - jstests/sharding/mongos_query_comment.js
@@ -38,7 +37,6 @@ selector:
   - jstests/sharding/authwhere.js
   - jstests/sharding/authmr.js
   - jstests/sharding/sessions_collection_auto_healing.js
-  - jstests/sharding/auth_copydb.js
   - jstests/sharding/read_does_not_create_namespaces.js
   - jstests/sharding/ismaster.js
   - jstests/sharding/balancer_shell_commands.js
diff --git a/buildscripts/resmokeconfig/suites/sharding_auth.yml b/buildscripts/resmokeconfig/suites/sharding_auth.yml
index f7698454d30..0404938d735 100644
--- a/buildscripts/resmokeconfig/suites/sharding_auth.yml
+++ b/buildscripts/resmokeconfig/suites/sharding_auth.yml
@@ -15,7 +15,6 @@ selector:
   - jstests/sharding/aggregation_currentop.js # SERVER-19318
   - jstests/sharding/kill_sessions.js
   # Skip these additional tests when running with auth enabled.
-  - jstests/sharding/copydb_from_mongos.js  # SERVER-13080
   - jstests/sharding/parallel.js
   # Skip these tests that run with enableTestCommands off.
   - jstests/sharding/shard_config_db_collections.js
diff --git a/buildscripts/resmokeconfig/suites/sharding_auth_audit.yml b/buildscripts/resmokeconfig/suites/sharding_auth_audit.yml
index a1a469b1b98..8329ba32ce1 100644
--- a/buildscripts/resmokeconfig/suites/sharding_auth_audit.yml
+++ b/buildscripts/resmokeconfig/suites/sharding_auth_audit.yml
@@ -15,7 +15,6 @@ selector:
   - jstests/sharding/aggregation_currentop.js # SERVER-19318
   - jstests/sharding/kill_sessions.js
   # Skip these additional tests when running with auth enabled.
-  - jstests/sharding/copydb_from_mongos.js  # SERVER-13080
   - jstests/sharding/parallel.js
   # Skip these tests that run with enableTestCommands off.
   - jstests/sharding/shard_config_db_collections.js
diff --git a/buildscripts/resmokeconfig/suites/sharding_auth_audit_misc.yml b/buildscripts/resmokeconfig/suites/sharding_auth_audit_misc.yml
index f4d7e1e89cb..5119d00f2d7 100644
--- a/buildscripts/resmokeconfig/suites/sharding_auth_audit_misc.yml
+++ b/buildscripts/resmokeconfig/suites/sharding_auth_audit_misc.yml
@@ -23,7 +23,6 @@ selector:
   - jstests/sharding/aggregation_currentop.js # SERVER-19318
   - jstests/sharding/kill_sessions.js
   # Skip these additional tests when running with auth enabled.
-  - jstests/sharding/copydb_from_mongos.js  # SERVER-13080
   - jstests/sharding/parallel.js
   # Skip these tests that run with enableTestCommands off.
   - jstests/sharding/shard_config_db_collections.js
diff --git a/buildscripts/resmokeconfig/suites/sharding_auth_misc.yml b/buildscripts/resmokeconfig/suites/sharding_auth_misc.yml
index aaa7fb1be33..94c281671c6 100644
--- a/buildscripts/resmokeconfig/suites/sharding_auth_misc.yml
+++ b/buildscripts/resmokeconfig/suites/sharding_auth_misc.yml
@@ -22,7 +22,6 @@ selector:
   - jstests/sharding/aggregation_currentop.js # SERVER-19318
   - jstests/sharding/kill_sessions.js
   # Skip these additional tests when running with auth enabled.
-  - jstests/sharding/copydb_from_mongos.js  # SERVER-13080
   - jstests/sharding/parallel.js
   # Skip these tests that run with enableTestCommands off.
   - jstests/sharding/shard_config_db_collections.js
diff --git a/buildscripts/resmokeconfig/suites/sharding_ese_19.yml b/buildscripts/resmokeconfig/suites/sharding_ese_19.yml
index e7e9123b362..e10958028e8 100644
--- a/buildscripts/resmokeconfig/suites/sharding_ese_19.yml
+++ b/buildscripts/resmokeconfig/suites/sharding_ese_19.yml
@@ -33,7 +33,6 @@ selector:
   - jstests/sharding/replication_with_undefined_shard_key.js
   - jstests/sharding/min_optime_recovery_on_failed_move_chunk_commit.js
   - jstests/sharding/change_stream_lookup_single_shard_cluster.js
-  - jstests/sharding/copydb_from_mongos.js
   - jstests/sharding/max_time_ms_sharded_new_commands.js
   - jstests/sharding/sessions_collection_auto_healing.js
   - jstests/sharding/major_version_check.js
@@ -55,4 +54,4 @@ executor:
         TestData:
           enableEncryption: ''
           encryptionKeyFile: *keyFile
-      readMode: commands
\ No newline at end of file
+      readMode: commands
diff --git a/buildscripts/resmokeconfig/suites/sharding_ese_20.yml b/buildscripts/resmokeconfig/suites/sharding_ese_20.yml
index 37a56012cd5..c63015ebf7d 100644
--- a/buildscripts/resmokeconfig/suites/sharding_ese_20.yml
+++ b/buildscripts/resmokeconfig/suites/sharding_ese_20.yml
@@ -25,7 +25,6 @@ selector:
   - jstests/sharding/version2.js
   - jstests/sharding/split_against_shard_with_invalid_split_points.js
   - jstests/sharding/add_shard_to_zone.js
-  - jstests/sharding/auth_copydb.js
   - jstests/sharding/auth_no_config_primary.js
   - jstests/sharding/balancer_shell_commands.js
   - jstests/sharding/remove_shard_from_zone.js
diff --git a/buildscripts/resmokeconfig/suites/sharding_ese_misc.yml b/buildscripts/resmokeconfig/suites/sharding_ese_misc.yml
index 9a9517a7ede..14e128dc260 100644
--- a/buildscripts/resmokeconfig/suites/sharding_ese_misc.yml
+++ b/buildscripts/resmokeconfig/suites/sharding_ese_misc.yml
@@ -323,7 +323,6 @@ selector:
   - jstests/sharding/replication_with_undefined_shard_key.js
   - jstests/sharding/min_optime_recovery_on_failed_move_chunk_commit.js
   - jstests/sharding/change_stream_lookup_single_shard_cluster.js
-  - jstests/sharding/copydb_from_mongos.js
   - jstests/sharding/max_time_ms_sharded_new_commands.js
   - jstests/sharding/sessions_collection_auto_healing.js
   - jstests/sharding/major_version_check.js
@@ -345,7 +344,6 @@ selector:
   - jstests/sharding/version2.js
   - jstests/sharding/split_against_shard_with_invalid_split_points.js
   - jstests/sharding/add_shard_to_zone.js
-  - jstests/sharding/auth_copydb.js
   - jstests/sharding/auth_no_config_primary.js
   - jstests/sharding/balancer_shell_commands.js
   - jstests/sharding/remove_shard_from_zone.js
diff --git a/buildscripts/resmokeconfig/suites/sharding_last_stable_mongos_and_mixed_shards_11.yml b/buildscripts/resmokeconfig/suites/sharding_last_stable_mongos_and_mixed_shards_11.yml
index a5390a196f4..c94514ac0b9 100644
--- a/buildscripts/resmokeconfig/suites/sharding_last_stable_mongos_and_mixed_shards_11.yml
+++ b/buildscripts/resmokeconfig/suites/sharding_last_stable_mongos_and_mixed_shards_11.yml
@@ -14,7 +14,6 @@ selector:
   roots:
   - jstests/sharding/mongos_query_comment.js
   - jstests/sharding/read_after_optime.js
-  - jstests/sharding/copydb_from_mongos.js
   - jstests/sharding/server_status.js
   - jstests/sharding/missing_key.js
   - jstests/sharding/listDatabases.js
@@ -34,7 +33,6 @@ selector:
   - jstests/sharding/remove_shard_from_zone.js
   - jstests/sharding/addshard6.js
   - jstests/sharding/autodiscover_config_rs_from_secondary.js
-  - jstests/sharding/auth_copydb.js
   - jstests/sharding/mrShardedOutputAuth.js
   - jstests/sharding/authmr.js
   - jstests/sharding/forget_mr_temp_ns.js
diff --git a/buildscripts/resmokeconfig/suites/sharding_last_stable_mongos_and_mixed_shards_misc.yml b/buildscripts/resmokeconfig/suites/sharding_last_stable_mongos_and_mixed_shards_misc.yml
index 881db6b9765..661efbfa354 100644
--- a/buildscripts/resmokeconfig/suites/sharding_last_stable_mongos_and_mixed_shards_misc.yml
+++ b/buildscripts/resmokeconfig/suites/sharding_last_stable_mongos_and_mixed_shards_misc.yml
@@ -298,7 +298,6 @@ selector:
   - jstests/sharding/disable_autosplit.js
   - jstests/sharding/mongos_query_comment.js
   - jstests/sharding/read_after_optime.js
-  - jstests/sharding/copydb_from_mongos.js
   - jstests/sharding/server_status.js
   - jstests/sharding/missing_key.js
   - jstests/sharding/listDatabases.js
@@ -318,7 +317,6 @@ selector:
   - jstests/sharding/remove_shard_from_zone.js
   - jstests/sharding/addshard6.js
   - jstests/sharding/autodiscover_config_rs_from_secondary.js
-  - jstests/sharding/auth_copydb.js
   - jstests/sharding/mrShardedOutputAuth.js
   - jstests/sharding/authmr.js
   - jstests/sharding/forget_mr_temp_ns.js
diff --git a/buildscripts/resmokeconfig/suites/sharding_misc.yml b/buildscripts/resmokeconfig/suites/sharding_misc.yml
index 6e3dea7760e..5ef0a8eb6dd 100644
--- a/buildscripts/resmokeconfig/suites/sharding_misc.yml
+++ b/buildscripts/resmokeconfig/suites/sharding_misc.yml
@@ -332,7 +332,6 @@ selector:
   - jstests/sharding/server_status.js
   - jstests/sharding/ssv_config_check.js
   - jstests/sharding/update_zone_key_range.js
-  - jstests/sharding/copydb_from_mongos.js
   - jstests/sharding/auth2.js
   - jstests/sharding/change_stream_update_lookup_collation.js
   - jstests/sharding/mongos_query_comment.js
@@ -342,7 +341,6 @@ selector:
   - jstests/sharding/authwhere.js
   - jstests/sharding/authmr.js
   - jstests/sharding/sessions_collection_auto_healing.js
-  - jstests/sharding/auth_copydb.js
   - jstests/sharding/read_does_not_create_namespaces.js
   - jstests/sharding/ismaster.js
   - jstests/sharding/balancer_shell_commands.js
diff --git a/buildscripts/templates/generate_resmoke_suites/sharding_auth.yml.j2 b/buildscripts/templates/generate_resmoke_suites/sharding_auth.yml.j2
index 86d41ade5f6..f7beb4884f1 100644
--- a/buildscripts/templates/generate_resmoke_suites/sharding_auth.yml.j2
+++ b/buildscripts/templates/generate_resmoke_suites/sharding_auth.yml.j2
@@ -32,7 +32,6 @@ selector:
   - jstests/sharding/aggregation_currentop.js # SERVER-19318
   - jstests/sharding/kill_sessions.js
   # Skip these additional tests when running with auth enabled.
-  - jstests/sharding/copydb_from_mongos.js  # SERVER-13080
   - jstests/sharding/parallel.js
   # Skip these tests that run with enableTestCommands off.
   - jstests/sharding/shard_config_db_collections.js
diff --git a/buildscripts/templates/generate_resmoke_suites/sharding_auth_audit.yml.j2 b/buildscripts/templates/generate_resmoke_suites/sharding_auth_audit.yml.j2
index 0a46cb4585f..8c7a770fd5e 100644
--- a/buildscripts/templates/generate_resmoke_suites/sharding_auth_audit.yml.j2
+++ b/buildscripts/templates/generate_resmoke_suites/sharding_auth_audit.yml.j2
@@ -33,7 +33,6 @@ selector:
   - jstests/sharding/aggregation_currentop.js # SERVER-19318
   - jstests/sharding/kill_sessions.js
   # Skip these additional tests when running with auth enabled.
-  - jstests/sharding/copydb_from_mongos.js  # SERVER-13080
   - jstests/sharding/parallel.js
   # Skip these tests that run with enableTestCommands off.
   - jstests/sharding/shard_config_db_collections.js
diff --git a/jstests/auth/copyauth.js b/jstests/auth/copyauth.js
deleted file mode 100644
index 9caa51a6e87..00000000000
--- a/jstests/auth/copyauth.js
+++ /dev/null
@@ -1,275 +0,0 @@
-// Test copyDatabase command with various combinations of authed/unauthed and single node/replica
-// set source and dest.
-
-TestData.authMechanism = "SCRAM-SHA-1";                        // SERVER-11428
-DB.prototype._defaultAuthenticationMechanism = "SCRAM-SHA-1";  // SERVER-11428
-
-// We turn off gossiping the mongo shell's clusterTime because this test connects to replica sets
-// and sharded clusters as a user other than __system. Attempting to advance the clusterTime while
-// it has been signed with a dummy key results in an authorization error.
-TestData.skipGossipingClusterTime = true;
-
-var baseName = "jstests_clone_copyauth";
-
-/*
- * Helper to spawn a replica set, sharded cluster, or a single mongod and hide it all behind the
- * same interface.
- *
- * Arguments:
- *
- * clusterType - type of cluster to start.  Options are "sharded", "repl", or "single".
- * startWithAuth - whether to start the cluster with authentication.
- * startWithTransitionToAuth - whether to start the cluster with --transitionToAuth (startWithAuth
- * must also be true).
- *
- * Member variables:
- *
- * conn - a connection to the node used to access this cluster, whether it's the mongod, a primary
- * mongod in a replica set, or a mongos.
- * connString - the full connection string used to connect to this cluster.  For a replica set this
- * is the full connection string including the replica set name.
- *
- * Member functions:
- *
- * stop() - stop and cleanup whatever nodes the helper spawned when it was created.
- * @tags: [requires_replication, requires_sharding]
- */
-function ClusterSpawnHelper(clusterType, startWithAuth, startWithTransitionToAuth) {
-    var singleNodeConfig = {};
-    if (startWithAuth) {
-        singleNodeConfig.keyFile = "jstests/libs/key1";
-        if (startWithTransitionToAuth) {
-            singleNodeConfig.transitionToAuth = "";
-        }
-    }
-    if (clusterType === "sharded") {
-        var shardingTestConfig = {
-            name: baseName + "_source",
-            keyFile: singleNodeConfig.keyFile,
-            mongos: [singleNodeConfig],
-            shards: [singleNodeConfig],
-            config: [singleNodeConfig]
-        };
-        var shardingTest = new ShardingTest(shardingTestConfig);
-        this.conn = shardingTest.s;
-        this.connString = this.conn.host;
-    } else if (clusterType === "repl") {
-        var replSetTestConfig = {
-            name: baseName + "_source",
-            nodes: 3,
-            nodeOptions: singleNodeConfig,
-            keyFile: singleNodeConfig.keyFile
-        };
-        var replSetTest = new ReplSetTest(replSetTestConfig);
-        replSetTest.startSet();
-        replSetTest.initiate();
-        if (startWithAuth) {
-            authutil.asCluster(
-                replSetTest.nodes, replSetTestConfig.nodeOptions.keyFile, function() {
-                    replSetTest.awaitReplication();
-                });
-        } else {
-            replSetTest.awaitReplication();
-        }
-        this.conn = replSetTest.getPrimary();
-        this.connString = replSetTest.getURL();
-    } else {
-        this.conn = MongoRunner.runMongod(singleNodeConfig);
-        this.connString = this.conn.host;
-    }
-
-    this.stop = function() {
-        if (clusterType === "sharded") {
-            shardingTest.stop();
-        } else if (clusterType === "repl") {
-            replSetTest.stopSet();
-        } else {
-            MongoRunner.stopMongod(this.conn);
-        }
-    };
-}
-
-/*
- * Helper to test the running the "copydb" command between various kinds of clusters and various
- * combinations of authentication on the source and target.
- *
- * @param {Object} configObj
- *
- *   {
- *     sourceClusterType {string}: Type of cluster to use as the source of the copy.  Options are
- *         "single", "repl", "sharded".
- *     isSourceUsingAuth {bool}: Whether to use auth in the source cluster for the copy.
- *     targetClusterType {string}: Type of cluster to use as the target of the copy.  Options are
- *         "single", "repl", "sharded".
- *     isTargetUsingAuth {bool}: Whether to use auth in the target cluster for the copy.
- *   }
- */
-function copydbBetweenClustersTest(configObj) {
-    // First sanity check the arguments in our configObj
-    var requiredKeys = [
-        'sourceClusterType',
-        'isSourceUsingAuth',
-        'targetClusterType',
-        'isTargetUsingAuth',
-        'isSourceUsingTransitionToAuth',
-        'isTargetUsingTransitionToAuth'
-    ];
-
-    var i;
-    for (i = 0; i < requiredKeys.length; i++) {
-        assert(configObj.hasOwnProperty(requiredKeys[i]),
-               "Missing required key: " + requiredKeys[i] + " in config object");
-    }
-
-    // 1. Get a connection to the source database, insert data and setup auth if applicable
-    source = new ClusterSpawnHelper(configObj.sourceClusterType,
-                                    configObj.isSourceUsingAuth,
-                                    configObj.isSourceUsingTransitionToAuth);
-
-    if (configObj.isSourceUsingAuth) {
-        // Create a super user so we can create a regular user and not be locked out afterwards
-        source.conn.getDB("admin").createUser(
-            {user: "sourceSuperUser", pwd: "sourceSuperUser", roles: ["root"]});
-        source.conn.getDB("admin").auth("sourceSuperUser", "sourceSuperUser");
-
-        source.conn.getDB(baseName)[baseName].save({i: 1});
-        assert.eq(1, source.conn.getDB(baseName)[baseName].count());
-        assert.eq(1, source.conn.getDB(baseName)[baseName].findOne().i);
-
-        // Insert a document and create a regular user that we will use for the target
-        // authenticating with the source
-        source.conn.getDB(baseName).createUser({user: "foo", pwd: "bar", roles: ["dbOwner"]});
-
-        source.conn.getDB("admin").logout();
-
-        var readWhenLoggedOut = function() {
-            source.conn.getDB(baseName)[baseName].findOne();
-        };
-        if (configObj.isSourceUsingTransitionToAuth) {
-            // transitionToAuth does not turn on access control
-            assert.doesNotThrow(readWhenLoggedOut);
-        } else {
-            assert.throws(readWhenLoggedOut);
-        }
-    } else {
-        source.conn.getDB(baseName)[baseName].save({i: 1});
-        assert.eq(1, source.conn.getDB(baseName)[baseName].count());
-        assert.eq(1, source.conn.getDB(baseName)[baseName].findOne().i);
-    }
-
-    // 2. Get a connection to the target database, and set up auth if necessary
-    target = new ClusterSpawnHelper(configObj.targetClusterType,
-                                    configObj.isTargetUsingAuth,
-                                    configObj.isTargetUsingTransitionToAuth);
-
-    if (configObj.isTargetUsingAuth) {
-        target.conn.getDB("admin").createUser(
-            {user: "targetSuperUser", pwd: "targetSuperUser", roles: ["root"]});
-
-        var readWhenLoggedOut = function() {
-            target.conn.getDB(baseName)[baseName].findOne();
-        };
-        if (configObj.isTargetUsingTransitionToAuth) {
-            // transitionToAuth does not turn on access control
-            assert.doesNotThrow(readWhenLoggedOut);
-        } else {
-            assert.throws(readWhenLoggedOut);
-        }
-
-        target.conn.getDB("admin").auth("targetSuperUser", "targetSuperUser");
-    }
-
-    // 3. Run the copydb command
-    target.conn.getDB(baseName).dropDatabase();
-    assert.eq(0, target.conn.getDB(baseName)[baseName].count());
-    if (configObj.isSourceUsingAuth) {
-        // We only need to pass username and password if the target has to send authentication
-        // information to the source cluster
-        assert.commandWorked(target.conn.getDB(baseName).copyDatabase(
-            baseName, baseName, source.connString, "foo", "bar"));
-    } else {
-        // We are copying from a cluster with no auth
-        assert.commandWorked(
-            target.conn.getDB(baseName).copyDatabase(baseName, baseName, source.connString));
-    }
-    assert.eq(1, target.conn.getDB(baseName)[baseName].count());
-    assert.eq(1, target.conn.getDB(baseName)[baseName].findOne().i);
-
-    if (configObj.isTargetUsingAuth) {
-        target.conn.getDB("admin").logout();
-    }
-
-    // 4. Do any necessary cleanup
-    source.stop();
-    target.stop();
-}
-
-(function() {
-    "use strict";
-
-    var sourceClusterTypeValues = ["single", "repl", "sharded"];
-    var isSourceUsingAuthValues = [true, false];
-    var isSourceUsingTransitionToAuthValues = [true, false];
-    var targetClusterTypeValues = ["single", "repl", "sharded"];
-    var isTargetUsingAuthValues = [true, false];
-    var isTargetUsingTransitionToAuthValues = [true, false];
-    for (var i = 0; i < sourceClusterTypeValues.length; i++) {
-        for (var j = 0; j < isSourceUsingAuthValues.length; j++) {
-            for (var k = 0; k < targetClusterTypeValues.length; k++) {
-                for (var l = 0; l < isTargetUsingAuthValues.length; l++) {
-                    if (sourceClusterTypeValues[i] === "sharded" &&
-                        targetClusterTypeValues[k] === "sharded") {
-                        // SERVER-13112
-                        continue;
-                    }
-                    if (sourceClusterTypeValues[i] === "repl" &&
-                        targetClusterTypeValues[k] === "repl") {
-                        // SERVER-13077
-                        continue;
-                    }
-                    if (isSourceUsingAuthValues[j] === true &&
-                        targetClusterTypeValues[k] === "sharded") {
-                        // SERVER-6427
-                        continue;
-                    }
-                    if (sourceClusterTypeValues[i] === "repl" &&
-                        isSourceUsingAuthValues[j] === false &&
-                        targetClusterTypeValues[k] === "sharded" &&
-                        isTargetUsingAuthValues[l] === true) {
-                        // SERVER-18103
-                        continue;
-                    }
-
-                    for (var m = 0; m < isSourceUsingTransitionToAuthValues.length; m++) {
-                        if (isSourceUsingTransitionToAuthValues[m] === true &&
-                            isSourceUsingAuthValues[j] === false) {
-                            // transitionToAuth requires auth parameters
-                            continue;
-                        }
-                        for (var n = 0; n < isTargetUsingTransitionToAuthValues.length; n++) {
-                            if (isTargetUsingTransitionToAuthValues[n] === true &&
-                                isTargetUsingAuthValues[l] === false) {
-                                // transitionToAuth requires auth parameters
-                                continue;
-                            }
-                            var testCase = {
-                                'sourceClusterType': sourceClusterTypeValues[i],
-                                'isSourceUsingAuth': isSourceUsingAuthValues[j],
-                                'targetClusterType': targetClusterTypeValues[k],
-                                'isTargetUsingAuth': isTargetUsingAuthValues[l],
-                                'isSourceUsingTransitionToAuth':
-                                    isSourceUsingTransitionToAuthValues[m],
-                                'isTargetUsingTransitionToAuth':
-                                    isTargetUsingTransitionToAuthValues[n]
-                            };
-                            print("Running copydb with auth test:");
-                            printjson(testCase);
-                            copydbBetweenClustersTest(testCase);
-                        }
-                    }
-                }
-            }
-        }
-    }
-}());
-print(baseName + " success!");
diff --git a/jstests/auth/copyauth2.js b/jstests/auth/copyauth2.js
deleted file mode 100644
index 3355e6d67d1..00000000000
--- a/jstests/auth/copyauth2.js
+++ /dev/null
@@ -1,44 +0,0 @@
-// Basic test that copydb works with auth enabled when copying within the same cluster
-// @tags: [requires_sharding]
-
-function runTest(a, b) {
-    a.createUser({user: "chevy", pwd: "chase", roles: ["read", {role: 'readWrite', db: b._name}]});
-    a.foo.insert({a: 1});
-    b.getSiblingDB("admin").logout();
-
-    a.auth("chevy", "chase");
-
-    assert.eq(1, a.foo.count(), "A");
-    assert.eq(0, b.foo.count(), "B");
-
-    a.copyDatabase(a._name, b._name);
-    assert.eq(1, a.foo.count(), "C");
-    assert.eq(1, b.foo.count(), "D");
-}
-
-// run all tests standalone
-var conn = MongoRunner.runMongod({auth: ""});
-var a = conn.getDB("copydb2-test-a");
-var b = conn.getDB("copydb2-test-b");
-var adminDB = conn.getDB("admin");
-adminDB.createUser({user: "root", pwd: "root", roles: ["root"]});
-adminDB.auth("root", "root");
-runTest(a, b);
-MongoRunner.stopMongod(conn);
-
-/** Doesn't work in a sharded setup due to SERVER-13080
-// run all tests sharded
-var st = new ShardingTest({
-    shards: 2,
-    mongos: 1,
-    keyFile: "jstests/libs/key1",
-});
-var a = st.s.getDB( "copydb2-test-a" );
-var b = st.s.getDB( "copydb2-test-b" );
-st.s.getDB( "admin" ).createUser({user: "root", pwd: "root", roles: ["root"]});
-st.s.getDB( "admin" ).auth("root", "root");
-runTest(a, b);
-st.stop();
-*/
-
-print("Successfully completed copyauth2.js test.");
diff --git a/jstests/auth/copyauth_between_shards.js b/jstests/auth/copyauth_between_shards.js
deleted file mode 100644
index aed4a6847a0..00000000000
--- a/jstests/auth/copyauth_between_shards.js
+++ /dev/null
@@ -1,60 +0,0 @@
-// Test copyDatabase command inside a sharded cluster with and without auth.  Tests with auth are
-// currently disabled due to SERVER-13080.
-// @tags: [requires_sharding, requires_replication]
-
-var baseName = "jstests_clone_copyauth_between_shards";
-
-function copydbWithinShardedCluster(useReplSets, passCredentials, useAuth) {
-    var clusterConfig = {shards: 1, mongos: 1, config: 1};
-
-    if (useAuth) {
-        clusterConfig.auth = "";
-        clusterConfig.keyFile = "jstests/libs/key1";
-    }
-
-    if (useReplSets) {
-        clusterConfig.rs = {};
-    }
-    var st = new ShardingTest(clusterConfig);
-
-    var mongos = st.s;
-
-    var test1 = mongos.getDB('test1');
-    var test2 = mongos.getDB('test2');
-
-    if (useAuth) {
-        mongos.getDB("admin").createUser({user: "super", pwd: "super", roles: ["root"]});
-        assert.throws(function() {
-            mongos.getDB("test1")["test1"].findOne();
-        });
-        mongos.getDB("admin").auth("super", "super");
-    }
-
-    test1.getCollection('test').insert({foo: 'bar'});
-    jsTestLog('Test document on source db:');
-    printjson(test1.getCollection('test').findOne());
-    jsTestLog('copydb');
-
-    // The copyDatabase command acts differently depending on whether we pass username and password
-    if (passCredentials) {
-        var result =
-            mongos.getDB('admin').copyDatabase('test1', 'test2', undefined, "super", "super");
-    } else {
-        var result = mongos.getDB('admin').copyDatabase('test1', 'test2');
-    }
-    printjson(result);
-    assert.eq(result.ok, 1.0);
-    jsTestLog('Test document on destination db:');
-    printjson(test2.getCollection('test').findOne());
-    st.stop();
-}
-
-// SERVER-13080
-// copydbWithinShardedCluster(true, true, true);
-// copydbWithinShardedCluster(false, true, true);
-// copydbWithinShardedCluster(true, false, true);
-// copydbWithinShardedCluster(false, false, true);
-copydbWithinShardedCluster(true, false, false);
-copydbWithinShardedCluster(false, false, false);
-
-print(baseName + " success!");
diff --git a/jstests/auth/lib/commands_lib.js b/jstests/auth/lib/commands_lib.js
index ed7ae60138b..f3635477545 100644
--- a/jstests/auth/lib/commands_lib.js
+++ b/jstests/auth/lib/commands_lib.js
@@ -2291,26 +2291,6 @@ var authCommandsLib = {
           ]
         },
         {
-          testname: "copydb",
-          command: {copydb: 1, fromdb: firstDbName, todb: secondDbName},
-          skipSharded: true,  // Does not work sharded due to SERVER-13080
-          testcases: [
-              {
-                runOnDb: adminDbName,
-                roles: {readWriteAnyDatabase: 1, root: 1, __system: 1},
-                privileges: [
-                    {resource: {db: firstDbName, collection: ""}, actions: ["find"]},
-                    {resource: {db: firstDbName, collection: "system.js"}, actions: ["find"]},
-                    {
-                      resource: {db: secondDbName, collection: ""},
-                      actions: ["insert", "createIndex"]
-                    },
-                    {resource: {db: secondDbName, collection: "system.js"}, actions: ["insert"]},
-                ]
-              },
-          ]
-        },
-        {
           testname: "createRole_authenticationRestrictions",
           command: {
               createRole: "testRole",
diff --git a/jstests/auth/localhostAuthBypass.js b/jstests/auth/localhostAuthBypass.js
index e3bb03b661d..f68ed6dfba4 100644
--- a/jstests/auth/localhostAuthBypass.js
+++ b/jstests/auth/localhostAuthBypass.js
@@ -54,11 +54,8 @@ var assertCannotRunCommands = function(mongo) {
     assert.throws(function() {
         mongo.getDB("test").createUser({user: username, pwd: password, roles: ['readWrite']});
     });
-    // DB operations
-    var authorizeErrorCode = 13;
-    assert.commandFailedWithCode(
-        mongo.getDB("test").copyDatabase("admin", "admin2"), authorizeErrorCode, "copyDatabase");
     // Create collection
+    var authorizeErrorCode = 13;
     assert.commandFailedWithCode(
         mongo.getDB("test").createCollection("log", {capped: true, size: 5242880, max: 5000}),
         authorizeErrorCode,
diff --git a/jstests/core/auth_copydb.js b/jstests/core/auth_copydb.js
deleted file mode 100644
index b8a85ae1c03..00000000000
--- a/jstests/core/auth_copydb.js
+++ /dev/null
@@ -1,26 +0,0 @@
-// @tags: [
-//      requires_non_retryable_commands,
-//      requires_fastcount,
-//      requires_auth,
-//      assumes_write_concern_unchanged
-// ]
-
-a = db.getSisterDB("copydb2-test-a");
-b = db.getSisterDB("copydb2-test-b");
-
-a.dropDatabase();
-b.dropDatabase();
-a.dropAllUsers();
-b.dropAllUsers();
-
-a.foo.save({a: 1});
-
-a.createUser({user: "chevy", pwd: "chase", roles: jsTest.basicUserRoles});
-
-assert.eq(1, a.foo.count(), "A");
-assert.eq(0, b.foo.count(), "B");
-
-// SERVER-727
-a.copyDatabase(a._name, b._name, "", "chevy", "chase");
-assert.eq(1, a.foo.count(), "C");
-assert.eq(1, b.foo.count(), "D");
diff --git a/jstests/core/bypass_doc_validation.js b/jstests/core/bypass_doc_validation.js
index d05d20cf2ca..b3290ef4e04 100644
--- a/jstests/core/bypass_doc_validation.js
+++ b/jstests/core/bypass_doc_validation.js
@@ -5,7 +5,6 @@
  *
  * - aggregation with $out
  * - applyOps (when not sharded)
- * - copyDb
  * - doTxn (when not sharded)
  * - findAndModify
  * - insert
@@ -85,19 +84,6 @@
         coll.aggregate(pipeline, {bypassDocumentValidation: true});
         assert.eq(1, outputColl.count({aggregation: 1}));
 
-        // Test the copyDb command.
-        const copyDbName = dbName + '_copy';
-        const copyDb = myDb.getSiblingDB(copyDbName);
-        assert.commandWorked(copyDb.dropDatabase());
-        let res = db.adminCommand(
-            {copydb: 1, fromdb: dbName, todb: copyDbName, bypassDocumentValidation: false});
-        assertFailsValidation(res);
-        assert.eq(0, copyDb[collName].count());
-        assert.commandWorked(copyDb.dropDatabase());
-        assert.commandWorked(db.adminCommand(
-            {copydb: 1, fromdb: dbName, todb: copyDbName, bypassDocumentValidation: true}));
-        assert.eq(coll.count(), db.getSiblingDB(copyDbName)[collName].count());
-
         // Test the findAndModify command.
         assert.throws(function() {
             coll.findAndModify(
@@ -114,7 +100,7 @@
         const reduce = function() {
             return 'mapReduce';
         };
-        res = myDb.runCommand({
+        let res = myDb.runCommand({
             mapReduce: collName,
             map: map,
             reduce: reduce,
diff --git a/jstests/core/collation.js b/jstests/core/collation.js
index d6857527bdf..5d199ae8915 100644
--- a/jstests/core/collation.js
+++ b/jstests/core/collation.js
@@ -1899,41 +1899,6 @@
         assert.eq(8, coll.findOne({_id: "foo"}).x);
     }
 
-    // Test that the collections created with the "copydb" command inherit the default collation of
-    // the corresponding collection.
-    {
-        const sourceDB = db.getSiblingDB("collation");
-        const destDB = db.getSiblingDB("collation_cloned");
-
-        sourceDB.dropDatabase();
-        destDB.dropDatabase();
-
-        // Create a collection with a non-simple default collation.
-        assert.commandWorked(
-            sourceDB.runCommand({create: coll.getName(), collation: {locale: "en", strength: 2}}));
-        var sourceCollectionInfos = sourceDB.getCollectionInfos({name: coll.getName()});
-
-        assert.writeOK(sourceDB[coll.getName()].insert({_id: "FOO"}));
-        assert.writeOK(sourceDB[coll.getName()].insert({_id: "bar"}));
-        assert.eq([{_id: "FOO"}],
-                  sourceDB[coll.getName()].find({_id: "foo"}).toArray(),
-                  "query should have performed a case-insensitive match");
-
-        assert.commandWorked(
-            sourceDB.adminCommand({copydb: 1, fromdb: sourceDB.getName(), todb: destDB.getName()}));
-        var destCollectionInfos = destDB.getCollectionInfos({name: coll.getName()});
-
-        // The namespace for the _id index will differ since the source and destination collections
-        // are in different databases. Same for UUID.
-        delete sourceCollectionInfos[0].idIndex.ns;
-        delete sourceCollectionInfos[0].info.uuid;
-        delete destCollectionInfos[0].idIndex.ns;
-        delete destCollectionInfos[0].info.uuid;
-
-        assert.eq(sourceCollectionInfos, destCollectionInfos);
-        assert.eq([{_id: "FOO"}], destDB[coll.getName()].find({_id: "foo"}).toArray());
-    }
-
     // Test that the collection created with the "cloneCollectionAsCapped" command inherits the
     // default collation of the corresponding collection. We skip running this command in a sharded
     // cluster because it isn't supported by mongos.
diff --git a/jstests/core/commands_namespace_parsing.js b/jstests/core/commands_namespace_parsing.js
index 104b72f3456..db61de2b07b 100644
--- a/jstests/core/commands_namespace_parsing.js
+++ b/jstests/core/commands_namespace_parsing.js
@@ -233,13 +233,6 @@
     assertFailsWithInvalidNamespacesForField(
         "to", {renameCollection: "test.b", to: ""}, isFullyQualified, isAdminCommand);
 
-    // Test copydb fails with an invalid fromdb name.
-    assertFailsWithInvalidNamespacesForField(
-        "fromdb", {copydb: 1, fromdb: "", todb: "b"}, isNotFullyQualified, isAdminCommand);
-    // Test copydb fails with an invalid todb name.
-    assertFailsWithInvalidNamespacesForField(
-        "todb", {copydb: 1, fromdb: "a", todb: ""}, isNotFullyQualified, isAdminCommand);
-
     // Test drop fails with an invalid collection name.
     assertFailsWithInvalidNamespacesForField(
         "drop", {drop: ""}, isNotFullyQualified, isNotAdminCommand);
diff --git a/jstests/core/copydb.js b/jstests/core/copydb.js
deleted file mode 100644
index 991734f3f8d..00000000000
--- a/jstests/core/copydb.js
+++ /dev/null
@@ -1,28 +0,0 @@
-// @tags: [
-//     requires_non_retryable_commands,
-//     requires_fastcount,
-//
-//     # copyDatabase is not available on embedded
-//     incompatible_with_embedded
-// ]
-
-// Basic tests for the copydb command.  These only test copying from the same server; these do not
-// test the ability of copydb to pull a database from another server (with or without auth).
-
-// Test basic command usage.
-var db1 = db.getSisterDB("copydb-test-db1");
-var db2 = db.getSisterDB("copydb-test-db2");
-assert.commandWorked(db1.dropDatabase());
-assert.commandWorked(db2.dropDatabase());
-assert.writeOK(db1.foo.save({db1: 1}));
-assert.commandWorked(db1.foo.ensureIndex({db1: 1}));
-assert.eq(1, db1.foo.count(), "A");
-assert.eq(0, db2.foo.count(), "B");
-assert.commandWorked(db1.copyDatabase(db1._name, db2._name));
-assert.eq(1, db1.foo.count(), "C");
-assert.eq(1, db2.foo.count(), "D");
-assert.eq(db1.foo.getIndexes().length, db2.foo.getIndexes().length);
-
-// Test command input validation.
-assert.commandFailed(db1.adminCommand(
-    {copydb: 1, fromdb: db1.getName(), todb: "copydb.invalid"}));  // Name can't contain dot.
diff --git a/jstests/core/system_profile.js b/jstests/core/system_profile.js
index 5198feebe80..2a805ba8942 100644
--- a/jstests/core/system_profile.js
+++ b/jstests/core/system_profile.js
@@ -68,14 +68,3 @@ assert.commandWorked(testDB.dropDatabase());
 assert.commandWorked(testDB.createCollection("foo"));
 assert.commandFailed(testDB.adminCommand(
     {renameCollection: testDB.foo.getFullName(), to: testDB.system.profile.getFullName()}));
-
-// Copying a database containing "system.profile" should succeed.  The "system.profile" collection
-// should not be copied.
-assert.commandWorked(testDB.dropDatabase());
-assert.commandWorked(testDB.createCollection("foo"));
-assert.commandWorked(testDB.createCollection("system.profile"));
-assert.commandWorked(testDBCopy.dropDatabase());
-assert.commandWorked(
-    testDB.adminCommand({copydb: 1, fromdb: testDB.getName(), todb: testDBCopy.getName()}));
-assert(testDBCopy.foo.exists());
-assert.isnull(testDBCopy.system.profile.exists());
diff --git a/jstests/core/views/views_all_commands.js b/jstests/core/views/views_all_commands.js
index b6f21425b0c..4283f459268 100644
--- a/jstests/core/views/views_all_commands.js
+++ b/jstests/core/views/views_all_commands.js
@@ -131,7 +131,6 @@
             skip: "Tested in views/views_sharded.js",
         },
         clearLog: {skip: isUnrelated},
-        clone: {skip: "Tested in replsets/cloneDb.js"},
         cloneCollection: {skip: "Tested in noPassthroughWithMongod/clonecollection.js"},
         cloneCollectionAsCapped: {
             command: {cloneCollectionAsCapped: "view", toCollection: "testcapped", size: 10240},
@@ -147,7 +146,6 @@
         connectionStatus: {skip: isUnrelated},
         convertToCapped: {command: {convertToCapped: "view", size: 12345}, expectFailure: true},
         coordinateCommitTransaction: {skip: isUnrelated},
-        copydb: {skip: "Tested in replsets/copydb.js"},
         copydbsaslstart: {skip: isUnrelated},
         count: {command: {count: "view"}},
         cpuload: {skip: isAnInternalCommand},
diff --git a/jstests/libs/override_methods/auto_retry_on_network_error.js b/jstests/libs/override_methods/auto_retry_on_network_error.js
index c68d0de200c..a37f9d1650e 100644
--- a/jstests/libs/override_methods/auto_retry_on_network_error.js
+++ b/jstests/libs/override_methods/auto_retry_on_network_error.js
@@ -67,7 +67,6 @@
         "cloneCollectionAsCapped",
         "collMod",
         "convertToCapped",
-        "copydb",
         "create",
         "createIndexes",
         "createRole",
diff --git a/jstests/libs/override_methods/set_read_and_write_concerns.js b/jstests/libs/override_methods/set_read_and_write_concerns.js
index b41faa315df..b68d6c1c5a4 100644
--- a/jstests/libs/override_methods/set_read_and_write_concerns.js
+++ b/jstests/libs/override_methods/set_read_and_write_concerns.js
@@ -65,7 +65,6 @@
         "collMod",
         "commitTransaction",
         "convertToCapped",
-        "copydb",
         "create",
         "createIndexes",
         "createRole",
diff --git a/jstests/noPassthrough/copydb_illegal_collections.js b/jstests/noPassthrough/copydb_illegal_collections.js
deleted file mode 100644
index 29c41d08ffc..00000000000
--- a/jstests/noPassthrough/copydb_illegal_collections.js
+++ /dev/null
@@ -1,29 +0,0 @@
-/**
- * This test creates a replica set and tries copying the local database. It expects an error on
- * the `copydb` command when it runs across an illegal namespace to copy, e.g:
- * `local.system.replset` -> `db2.system.replset`.
- * @tags: [requires_replication, requires_persistence]
- */
-(function() {
-    "use strict";
-    var rst = new ReplSetTest({nodes: 1});
-
-    rst.startSet();
-    rst.initiate();
-
-    var conn = rst.getPrimary();               // Waits for PRIMARY state.
-    conn = rst.restart(0, {noReplSet: true});  // Restart as a standalone node.
-    assert.neq(null, conn, "failed to restart");
-
-    // Must drop the oplog in order to induce the correct error below.
-    conn.getDB("local").oplog.rs.drop();
-
-    var db1 = conn.getDB("local");
-    var db2 = conn.getDB("db2");
-
-    var res = db1.adminCommand({copydb: 1, fromdb: db1._name, todb: db2._name});
-
-    assert.commandFailedWithCode(res, ErrorCodes.InvalidNamespace);
-    assert.gt(res["errmsg"].indexOf("cannot write to 'db2.system.replset'"), -1);
-    rst.stopSet();
-})();
diff --git a/jstests/noPassthrough/index_version_autoupgrade.js b/jstests/noPassthrough/index_version_autoupgrade.js
index c9b4e523448..f6bbb55eee8 100644
--- a/jstests/noPassthrough/index_version_autoupgrade.js
+++ b/jstests/noPassthrough/index_version_autoupgrade.js
@@ -129,16 +129,6 @@
         return coll;
     }, false);
 
-    // Test that the "copydb" command doesn't upgrade existing indexes to the latest version.
-    testIndexVersionAutoUpgrades(function(coll) {
-        assert.commandWorked(coll.getDB().adminCommand({
-            copydb: 1,
-            fromdb: coll.getDB().getName(),
-            todb: "copied",
-        }));
-        return coll.getDB().getSiblingDB("copied")[coll.getName()];
-    }, false);
-
     // Test that the "cloneCollection" command doesn't upgrade existing indexes to the latest
     // version.
     var cloneConn = MongoRunner.runMongod({});
@@ -153,18 +143,5 @@
     }, false);
     MongoRunner.stopMongod(cloneConn);
 
-    // Test that the "clone" command doesn't upgrade existing indexes to the latest version.
-    cloneConn = MongoRunner.runMongod({});
-    assert.neq(null, cloneConn, "mongod was unable to start up");
-    testIndexVersionAutoUpgrades(function(coll) {
-        var cloneDB = cloneConn.getDB(coll.getDB().getName());
-        assert.commandWorked(cloneDB.runCommand({
-            clone: conn.host,
-            fromDB: coll.getDB().getName(),
-        }));
-        return cloneDB[coll.getName()];
-    }, false);
-    MongoRunner.stopMongod(cloneConn);
-
     MongoRunner.stopMongod(conn);
 })();
diff --git a/jstests/noPassthroughWithMongod/server7428.js b/jstests/noPassthroughWithMongod/server7428.js
deleted file mode 100644
index 7b5278a10e1..00000000000
--- a/jstests/noPassthroughWithMongod/server7428.js
+++ /dev/null
@@ -1,24 +0,0 @@
-// Regression test for SERVER-7428.
-
-// TODO(spencer): move this test out of slowNightly directory once there is a better place for tests
-// that start their own mongod's but aren't slow
-
-// Verify that the copyDatabase command works appropriately when the
-// target mongo instance has authentication enabled.
-
-(function() {
-
-    // Setup fromDb with no auth
-    var fromDb = MongoRunner.runMongod();
-
-    // Setup toDb with auth
-    var toDb = MongoRunner.runMongod({auth: ""});
-    var admin = toDb.getDB("admin");
-    admin.createUser({user: "foo", pwd: "bar", roles: jsTest.adminUserRoles});
-    admin.auth("foo", "bar");
-
-    admin.copyDatabase('test', 'test', fromDb.host);
-
-    MongoRunner.stopMongod(fromDb);
-    MongoRunner.stopMongod(toDb);
-})();
diff --git a/jstests/replsets/cloneDb.js b/jstests/replsets/cloneDb.js
deleted file mode 100644
index f4ed71bb972..00000000000
--- a/jstests/replsets/cloneDb.js
+++ /dev/null
@@ -1,128 +0,0 @@
-// Test cloning a database from a replica set (as full replica set uri, just the PRIMARY, or just a
-// SECONDARY) to a standalone server and viceversa (SERVER-1643)
-
-(function() {
-    "use strict";
-
-    if (jsTest.options().keyFile) {
-        jsTest.log("Skipping test because clone command doesn't work with authentication enabled:" +
-                   " SERVER-4245");
-    } else {
-        var numDocs = 2000;
-
-        // 1kb string
-        var str = new Array(1000).toString();
-
-        var replsetDBName = 'cloneDBreplset';
-        var standaloneDBName = 'cloneDBstandalone';
-        var testColName = 'foo';
-        var testViewName = 'view';
-
-        jsTest.log("Create replica set");
-        var replTest = new ReplSetTest({name: 'testSet', nodes: 3});
-        replTest.startSet();
-        replTest.initiate();
-        var master = replTest.getPrimary();
-        var secondary = replTest._slaves[0];
-        var masterDB = master.getDB(replsetDBName);
-        masterDB.dropDatabase();
-
-        jsTest.log("Create standalone server");
-        var standalone = MongoRunner.runMongod();
-        standalone.getDB("admin").runCommand({setParameter: 1, logLevel: 5});
-        var standaloneDB = standalone.getDB(replsetDBName);
-        standaloneDB.dropDatabase();
-
-        jsTest.log("Insert data into replica set");
-        var bulk = masterDB[testColName].initializeUnorderedBulkOp();
-        for (var i = 0; i < numDocs; i++) {
-            bulk.insert({x: i, text: str});
-        }
-        assert.writeOK(bulk.execute({w: 3}));
-
-        jsTest.log("Create view on replica set");
-        assert.commandWorked(masterDB.runCommand({create: testViewName, viewOn: testColName}));
-
-        // Make sure all writes have replicated to secondary.
-        replTest.awaitReplication();
-
-        jsTest.log("Clone db from replica set to standalone server");
-        standaloneDB.cloneDatabase(replTest.getURL());
-        assert.eq(numDocs,
-                  standaloneDB[testColName].find().itcount(),
-                  'cloneDatabase from replset to standalone failed (document counts do not match)');
-        assert.eq(numDocs,
-                  standaloneDB[testViewName].find().itcount(),
-                  'cloneDatabase from replset to standalone failed (count on view incorrect)');
-
-        jsTest.log("Clone db from replica set PRIMARY to standalone server");
-        standaloneDB.dropDatabase();
-        standaloneDB.cloneDatabase(master.host);
-        assert.eq(numDocs,
-                  standaloneDB[testColName].find().itcount(),
-                  'cloneDatabase from PRIMARY to standalone failed (document counts do not match)');
-        assert.eq(numDocs,
-                  standaloneDB[testViewName].find().itcount(),
-                  'cloneDatabase from PRIMARY to standalone failed (count on view incorrect)');
-
-        jsTest.log("Clone db from replica set SECONDARY to standalone server (should not copy)");
-        standaloneDB.dropDatabase();
-        standaloneDB.cloneDatabase(secondary.host);
-        assert.eq(
-            0,
-            standaloneDB[testColName].find().itcount(),
-            'cloneDatabase from SECONDARY to standalone copied documents without slaveOk: true');
-
-        jsTest.log("Clone db from replica set SECONDARY to standalone server using slaveOk");
-        standaloneDB.dropDatabase();
-        standaloneDB.runCommand({clone: secondary.host, slaveOk: true});
-        assert.eq(
-            numDocs,
-            standaloneDB[testColName].find().itcount(),
-            'cloneDatabase from SECONDARY to standalone failed (document counts do not match)');
-        assert.eq(numDocs,
-                  standaloneDB[testViewName].find().itcount(),
-                  'cloneDatabase from SECONDARY to standalone failed (count on view incorrect)');
-
-        jsTest.log("Switch db and insert data into standalone server");
-        masterDB = master.getDB(standaloneDBName);
-        var secondaryDB = secondary.getDB(standaloneDBName);
-        standaloneDB = standalone.getDB(standaloneDBName);
-        masterDB.dropDatabase();
-        secondaryDB.dropDatabase();
-        standaloneDB.dropDatabase();
-
-        bulk = standaloneDB[testColName].initializeUnorderedBulkOp();
-        for (var i = 0; i < numDocs; i++) {
-            bulk.insert({x: i, text: str});
-        }
-        assert.writeOK(bulk.execute());
-
-        assert.commandWorked(standaloneDB.runCommand({create: testViewName, viewOn: testColName}));
-
-        jsTest.log("Clone db from standalone server to replica set PRIMARY");
-        masterDB.cloneDatabase(standalone.host);
-        replTest.awaitReplication();
-        assert.eq(numDocs,
-                  masterDB[testColName].find().itcount(),
-                  'cloneDatabase from standalone to PRIMARY failed (document counts do not match)');
-        assert.eq(numDocs,
-                  masterDB[testViewName].find().itcount(),
-                  'cloneDatabase from standalone to PRIMARY failed (count on view incorrect)');
-
-        jsTest.log("Clone db from standalone server to replica set SECONDARY");
-        masterDB.dropDatabase();
-        replTest.awaitReplication();
-        secondaryDB.cloneDatabase(standalone.host);
-        assert.eq(
-            0,
-            secondaryDB[testColName].find().itcount(),
-            'cloneDatabase from standalone to SECONDARY succeeded and should not accept writes');
-
-        jsTest.log("Shut down replica set and standalone server");
-        MongoRunner.stopMongod(standalone);
-
-        replTest.stopSet();
-    }
-
-})();
diff --git a/jstests/replsets/copydb.js b/jstests/replsets/copydb.js
deleted file mode 100644
index 2c11e553618..00000000000
--- a/jstests/replsets/copydb.js
+++ /dev/null
@@ -1,97 +0,0 @@
-// Tests the copydb command in a replica set.
-// Ensures that documents and indexes are replicated to secondary.
-
-(function() {
-    'use strict';
-
-    var replTest = new ReplSetTest({name: 'copydbTest', nodes: 3});
-
-    replTest.startSet();
-    replTest.initiate();
-    var primary = replTest.getPrimary();
-    var secondary = replTest._slaves[0];
-
-    var sourceDBName = 'copydb-repl-test-source';
-    var targetDBName = 'copydb-repl-test-target';
-
-    var primarySourceDB = primary.getDB(sourceDBName);
-    assert.commandWorked(primarySourceDB.dropDatabase(),
-                         'failed to drop source database ' + sourceDBName + ' on primary');
-
-    var primaryTargetDB = primary.getDB(targetDBName);
-    assert.commandWorked(primaryTargetDB.dropDatabase(),
-                         'failed to drop target database ' + targetDBName + ' on primary');
-
-    assert.writeOK(primarySourceDB.foo.save({a: 1}),
-                   'failed to insert document in source collection');
-    assert.commandWorked(primarySourceDB.foo.ensureIndex({a: 1}),
-                         'failed to create index in source collection on primary');
-    assert.commandWorked(primarySourceDB.runCommand({create: "fooView", viewOn: "foo"}),
-                         'failed to create view on source collection on primary');
-
-    assert.eq(1,
-              primarySourceDB.foo.find().itcount(),
-              'incorrect number of documents in source collection on primary before copy');
-    assert.eq(1,
-              primarySourceDB.fooView.find().itcount(),
-              'incorrect number of documents in source view on primary before copy');
-    assert.eq(0,
-              primaryTargetDB.foo.find().itcount(),
-              'target collection on primary should be empty before copy');
-
-    assert.commandWorked(
-        primarySourceDB.copyDatabase(primarySourceDB.getName(), primaryTargetDB.getName()),
-        'failed to copy database');
-
-    assert.eq(primarySourceDB.foo.find().itcount(),
-              primaryTargetDB.foo.find().itcount(),
-              'incorrect number of documents in target collection on primary after copy');
-
-    // Confirm that 'fooView' is still a view namespace after copy.
-    let res = primaryTargetDB.runCommand({listCollections: 1, filter: {name: "fooView"}});
-    assert.commandWorked(res);
-    assert(res.cursor.firstBatch.length === 1);
-    assert(res.cursor.firstBatch[0].hasOwnProperty("type"), tojson(res));
-    assert.eq("view",
-              res.cursor.firstBatch[0].type,
-              "Namespace exected to be view: " + tojson(res.cursor.firstBatch[0]));
-
-    assert.eq(primarySourceDB.fooView.find().itcount(),
-              primaryTargetDB.fooView.find().itcount(),
-              'incorrect number of documents in target view on primary after copy');
-
-    assert.eq(primarySourceDB.foo.getIndexes().length,
-              primaryTargetDB.foo.getIndexes().length,
-              'incorrect number of indexes in target collection on primary after copy');
-
-    replTest.awaitReplication();
-
-    var secondarySourceDB = secondary.getDB(sourceDBName);
-
-    assert.eq(primarySourceDB.foo.find().itcount(),
-              secondarySourceDB.foo.find().itcount(),
-              'incorrect number of documents in source collection on secondary after copy');
-
-    assert.eq(primarySourceDB.fooView.find().itcount(),
-              secondarySourceDB.fooView.find().itcount(),
-              'incorrect number of documents in source view on secondary after copy');
-
-    assert.eq(primarySourceDB.foo.getIndexes().length,
-              secondarySourceDB.foo.getIndexes().length,
-              'incorrect number of indexes in source collection on secondary after copy');
-
-    var secondaryTargetDB = secondary.getDB(targetDBName);
-
-    assert.eq(primaryTargetDB.foo.find().itcount(),
-              secondaryTargetDB.foo.find().itcount(),
-              'incorrect number of documents in target collection on secondary after copy');
-
-    assert.eq(primaryTargetDB.fooView.find().itcount(),
-              secondaryTargetDB.fooView.find().itcount(),
-              'incorrect number of documents in target view on secondary after copy');
-
-    assert.eq(primaryTargetDB.foo.getIndexes().length,
-              secondaryTargetDB.foo.getIndexes().length,
-              'incorrect number of indexes in target collection on secondary after copy');
-    replTest.stopSet();
-}());
diff --git a/jstests/replsets/localhostAuthBypass.js b/jstests/replsets/localhostAuthBypass.js
index 22a512f19d0..5a0a1b95562 100644
--- a/jstests/replsets/localhostAuthBypass.js
+++ b/jstests/replsets/localhostAuthBypass.js
@@ -43,11 +43,8 @@ var assertCannotRunCommands = function(mongo, isPrimary) {
             {out: "other"});
     });
 
-    // DB operations
-    var authorizeErrorCode = 13;
-    assert.commandFailedWithCode(
-        mongo.getDB("test").copyDatabase("admin", "admin2"), authorizeErrorCode, "copyDatabase");
     // Create collection
+    var authorizeErrorCode = 13;
     assert.commandFailedWithCode(
         mongo.getDB("test").createCollection("log", {capped: true, size: 5242880, max: 5000}),
         authorizeErrorCode,
diff --git a/jstests/sharding/auth_copydb.js b/jstests/sharding/auth_copydb.js
deleted file mode 100644
index 1c732546b2b..00000000000
--- a/jstests/sharding/auth_copydb.js
+++ /dev/null
@@ -1,49 +0,0 @@
-// Tests the copydb command on mongos with auth
-(function() {
-    'use strict';
-    load('jstests/libs/feature_compatibility_version.js');
-
-    // TODO: Remove 'shardAsReplicaSet: false' when SERVER-32672 is fixed.
-    var st = new ShardingTest(
-        {shards: 1, mongos: 1, other: {keyFile: 'jstests/libs/key1', shardAsReplicaSet: false}});
-    var mongos = st.s0;
-    var destAdminDB = mongos.getDB('admin');
-    var destTestDB = mongos.getDB('test');
-
-    var sourceMongodConn = MongoRunner.runMongod({});
-    var sourceTestDB = sourceMongodConn.getDB('test');
-
-    // Ensure sourceMongodConn has featureCompatibilityVersion=lastStableFCV so that the sharded
-    // cluster can communicate with it if it has featureCompatibilityVersion=lastStableFCV
-    assert.commandWorked(
-        sourceMongodConn.adminCommand({setFeatureCompatibilityVersion: lastStableFCV}));
-
-    sourceTestDB.foo.insert({a: 1});
-
-    destAdminDB.createUser({
-        user: 'admin',
-        pwd: 'password',
-        roles: jsTest.adminUserRoles
-    });  // Turns on access control enforcement
-
-    jsTestLog("Running copydb that should fail");
-    var res = destAdminDB.runCommand(
-        {copydb: 1, fromhost: sourceMongodConn.host, fromdb: 'test', todb: 'test'});
-    printjson(res);
-    assert.commandFailed(res);
-
-    destAdminDB.auth('admin', 'password');
-    assert.eq(0, destTestDB.foo.count());  // Be extra sure the copydb didn't secretly succeed.
-
-    jsTestLog("Running copydb that should succeed");
-    res = destAdminDB.runCommand(
-        {copydb: 1, fromhost: sourceMongodConn.host, fromdb: 'test', todb: 'test'});
-    printjson(res);
-    assert.commandWorked(res);
-
-    assert.eq(1, destTestDB.foo.count());
-    assert.eq(1, destTestDB.foo.findOne().a);
-
-    st.stop();
-    MongoRunner.stopMongod(sourceMongodConn);
-})();
diff --git a/jstests/sharding/copydb_from_mongos.js b/jstests/sharding/copydb_from_mongos.js
deleted file mode 100644
index 66db42407ca..00000000000
--- a/jstests/sharding/copydb_from_mongos.js
+++ /dev/null
@@ -1,22 +0,0 @@
-(function() {
-
-    var st = new ShardingTest({shards: 1});
-
-    var testDB = st.s.getDB('test');
-    assert.writeOK(testDB.foo.insert({a: 1}));
-
-    var res =
-        testDB.adminCommand({copydb: 1, fromhost: st.s.host, fromdb: 'test', todb: 'test_copy'});
-    assert.commandWorked(res);
-
-    var copy = st.s.getDB('test_copy');
-    assert.eq(1, copy.foo.count());
-    assert.eq(1, copy.foo.findOne().a);
-
-    // Test invalid todb database name.
-    assert.commandFailed(testDB.adminCommand(
-        {copydb: 1, fromhost: st.s.host, fromdb: 'test_copy', todb: 'test/copy'}));
-
-    st.stop();
-
-})();
diff --git a/jstests/sharding/database_and_shard_versioning_all_commands.js b/jstests/sharding/database_and_shard_versioning_all_commands.js
index ec7a1c564fe..09b60667d4c 100644
--- a/jstests/sharding/database_and_shard_versioning_all_commands.js
+++ b/jstests/sharding/database_and_shard_versioning_all_commands.js
@@ -6,20 +6,13 @@
     'use strict';
 
     load('jstests/libs/profiler.js');
+    load('jstests/sharding/libs/last_stable_mongos_commands.js');
     const dbName = "test";
     const collName = "foo";
     const ns = dbName + "." + collName;
 
     const SHARD_VERSION_UNSHARDED = [Timestamp(0, 0), ObjectId("000000000000000000000000")];
 
-    // These commands exist in the 4.0 mongo shell, so we must define a test case in mixed version
-    // suites. However, a check exists in this test that asserts that every command tested exists
-    // on mongos. In an all-4.2 environment, these commands won't exist. To increase test coverage,
-    // and allow us to run on same- and mixed-version suites, we will allow these commands to have
-    // a test defined without always existing on the mongos being used.
-    const fcv40OnlyCommands =
-        ['abortTransaction', 'commitTransaction', 'eval', 'geoNear', 'group', 'reIndex'];
-
     function validateTestCase(testCase) {
         assert(testCase.skip || testCase.command,
                "must specify exactly one of 'skip' or 'command' for test case " + tojson(testCase));
@@ -115,7 +108,6 @@
                 assert(mongosConn.getDB(dbName).getCollection(collName).drop());
             }
         },
-        copydb: {skip: "not allowed through mongos"},
         count: {
             sendsDbVersion: true,
             sendsShardVersion: true,
@@ -207,7 +199,6 @@
         echo: {skip: "does not forward command to primary shard"},
         enableSharding: {skip: "does not forward command to primary shard"},
         endSessions: {skip: "goes through the cluster write path"},
-        eval: {skip: "must define test coverage for 4.0 backwards compatibility"},
         explain: {skip: "TODO SERVER-31226"},
         features: {skip: "executes locally on mongos (not sent to any remote node)"},
         filemd5: {
@@ -227,7 +218,6 @@
         },
         flushRouterConfig: {skip: "executes locally on mongos (not sent to any remote node)"},
         fsync: {skip: "broadcast to all shards"},
-        geoNear: {skip: "must define test coverage for 4.0 backwards compatibility"},
         getCmdLineOpts: {skip: "executes locally on mongos (not sent to any remote node)"},
         getDiagnosticData: {skip: "executes locally on mongos (not sent to any remote node)"},
         getLastError: {skip: "does not forward command to primary shard"},
@@ -241,7 +231,6 @@
         grantPrivilegesToRole: {skip: "always targets the config server"},
         grantRolesToRole: {skip: "always targets the config server"},
         grantRolesToUser: {skip: "always targets the config server"},
-        group: {skip: "must define test coverage for 4.0 backwards compatibility"},
         hostInfo: {skip: "executes locally on mongos (not sent to any remote node)"},
         insert: {
             sendsDbVersion: false,
@@ -361,7 +350,6 @@
         refreshLogicalSessionCacheNow: {skip: "goes through the cluster write path"},
         refreshSessions: {skip: "executes locally on mongos (not sent to any remote node)"},
         refreshSessionsInternal: {skip: "executes locally on mongos (not sent to any remote node)"},
-        reIndex: {skip: "must define test coverage for 4.0 backwards compatibility"},
         removeShard: {skip: "not on a user database"},
         removeShardFromZone: {skip: "not on a user database"},
         renameCollection: {
@@ -432,6 +420,10 @@
         whatsmyuri: {skip: "executes locally on mongos (not sent to any remote node)"},
     };
 
+    commandsRemovedFromMongosIn42.forEach(function(cmd) {
+        testCases[cmd] = {skip: "must define test coverage for 4.0 backwards compatibility"};
+    });
+
     class AllCommandsTestRunner {
         constructor() {
             this.st = new ShardingTest(this.getShardingTestOptions());
@@ -548,7 +540,15 @@
             // After iterating through all the existing commands, ensure there were no additional
             // test cases that did not correspond to any mongos command.
             for (let key of Object.keys(testCases)) {
-                if (fcv40OnlyCommands.includes(key)) {
+                // We have defined real test cases for commands added in 4.2 so that the test cases
+                // are exercised in the regular suites, but because these test cases can't run in
+                // the last stable suite, we skip processing them here to avoid failing the below
+                // assertion. We have defined "skip" test cases for commands removed in 4.2 so the
+                // test case is defined in last stable suites (in which these commands still exist
+                // on the mongos), but these test cases won't be run in regular suites, so we skip
+                // processing them below as well.
+                if (commandsAddedToMongosIn42.includes(key) ||
+                    commandsRemovedFromMongosIn42.includes(key)) {
                     continue;
                 }
                 assert(testCases[key].validated || testCases[key].conditional,
diff --git a/jstests/sharding/libs/last_stable_mongos_commands.js b/jstests/sharding/libs/last_stable_mongos_commands.js
new file mode 100644
index 00000000000..43a1da0acfa
--- /dev/null
+++ b/jstests/sharding/libs/last_stable_mongos_commands.js
@@ -0,0 +1,16 @@
+// These commands were removed from mongos 4.2, but will still appear in the listCommands output
+// of a 4.0 mongos. A last-stable mongos will be unable to run a command on a latest version shard
+// that no longer supports that command. To increase test coverage and allow us to run on same- and
+// mixed-version suites, we allow these commands to have a test defined without always existing on
+// the servers being used.
+const commandsRemovedFromMongosIn42 = [
+    'copydb',
+    'eval',
+    'geoNear',
+    'group',
+    'reIndex',
+];
+// These commands were added in mongos 4.2, so will not appear in the listCommands output of a 4.0
+// mongos. We will allow these commands to have a test defined without always existing on the mongos
+// being used.
+const commandsAddedToMongosIn42 = ['abortTransaction', 'commitTransaction'];
diff --git a/jstests/sharding/localhostAuthBypass.js b/jstests/sharding/localhostAuthBypass.js
index d2035acdba2..996fb949175 100644
--- a/jstests/sharding/localhostAuthBypass.js
+++ b/jstests/sharding/localhostAuthBypass.js
@@ -95,9 +95,6 @@ TestData.skipCheckingUUIDsConsistentAcrossCluster = true;
             to: st.shard0.shardName  // Arbitrary shard.
         });
         assert.commandFailedWithCode(res, authorizeErrorCode, "moveChunk");
-        assert.commandFailedWithCode(mongo.getDB("test").copyDatabase("admin", "admin2"),
-                                     authorizeErrorCode,
-                                     "copyDatabase");
         // Create collection
         assert.commandFailedWithCode(
             mongo.getDB("test").createCollection("log", {capped: true, size: 5242880, max: 5000}),
diff --git a/jstests/sharding/printShardingStatus.js b/jstests/sharding/printShardingStatus.js
index 15fc549050e..25009589e67 100644
--- a/jstests/sharding/printShardingStatus.js
+++ b/jstests/sharding/printShardingStatus.js
@@ -88,7 +88,6 @@
 
     // Take a copy of the config db, in order to test the harder-to-setup cases below.
     // Copy into a standalone to also test running printShardingStatus() against a config dump.
-    // TODO: Replace this manual copy with copydb once SERVER-13080 is fixed.
     var config = mongos.getDB("config");
     var configCopy = standalone.getDB("configCopy");
     config.getCollectionInfos().forEach(function(c) {
diff --git a/jstests/sharding/safe_secondary_reads_drop_recreate.js b/jstests/sharding/safe_secondary_reads_drop_recreate.js
index 65eb2e0c03b..e26497dfddd 100644
--- a/jstests/sharding/safe_secondary_reads_drop_recreate.js
+++ b/jstests/sharding/safe_secondary_reads_drop_recreate.js
@@ -20,6 +20,7 @@
     "use strict";
 
     load('jstests/libs/profiler.js');
+    load('jstests/sharding/libs/last_stable_mongos_commands.js');
 
     let db = "test";
     let coll = "foo";
@@ -105,7 +106,6 @@
         connPoolSync: {skip: "does not return user data"},
         connectionStatus: {skip: "does not return user data"},
         convertToCapped: {skip: "primary only"},
-        copydb: {skip: "primary only"},
         copydbsaslstart: {skip: "primary only"},
         count: {
             setUp: function(mongosConn) {
@@ -152,7 +152,6 @@
         emptycapped: {skip: "primary only"},
         enableSharding: {skip: "primary only"},
         endSessions: {skip: "does not return user data"},
-        eval: {skip: "must define test coverage for 4.0 backwards compatibility"},
         explain: {skip: "TODO SERVER-30068"},
         features: {skip: "does not return user data"},
         filemd5: {skip: "does not return user data"},
@@ -172,7 +171,6 @@
         forceerror: {skip: "does not return user data"},
         fsync: {skip: "does not return user data"},
         fsyncUnlock: {skip: "does not return user data"},
-        geoNear: {skip: "must define test coverage for 4.0 backwards compatibility"},
         geoSearch: {skip: "not supported in mongos"},
         getCmdLineOpts: {skip: "does not return user data"},
         getDiagnosticData: {skip: "does not return user data"},
@@ -188,7 +186,6 @@
         grantPrivilegesToRole: {skip: "primary only"},
         grantRolesToRole: {skip: "primary only"},
         grantRolesToUser: {skip: "primary only"},
-        group: {skip: "must define test coverage for 4.0 backwards compatibility"},
         handshake: {skip: "does not return user data"},
         hostInfo: {skip: "does not return user data"},
         insert: {skip: "primary only"},
@@ -244,7 +241,6 @@
         planCacheListQueryShapes: {skip: "does not return user data"},
         planCacheSetFilter: {skip: "does not return user data"},
         profile: {skip: "primary only"},
-        reIndex: {skip: "does not return user data"},
         reapLogicalSessionCacheNow: {skip: "does not return user data"},
         refreshLogicalSessionCacheNow: {skip: "does not return user data"},
         refreshSessions: {skip: "does not return user data"},
@@ -307,6 +303,10 @@
         whatsmyuri: {skip: "does not return user data"}
     };
 
+    commandsRemovedFromMongosIn42.forEach(function(cmd) {
+        testCases[cmd] = {skip: "must define test coverage for 4.0 backwards compatibility"};
+    });
+
     let scenarios = {
         dropRecreateAsUnshardedOnSameShard: function(
             staleMongos, freshMongos, test, commandProfile) {
diff --git a/jstests/sharding/safe_secondary_reads_single_migration_suspend_range_deletion.js b/jstests/sharding/safe_secondary_reads_single_migration_suspend_range_deletion.js
index 67270de532a..6b682d1609d 100644
--- a/jstests/sharding/safe_secondary_reads_single_migration_suspend_range_deletion.js
+++ b/jstests/sharding/safe_secondary_reads_single_migration_suspend_range_deletion.js
@@ -25,6 +25,7 @@
     "use strict";
 
     load('jstests/libs/profiler.js');
+    load('jstests/sharding/libs/last_stable_mongos_commands.js');
 
     let db = "test";
     let coll = "foo";
@@ -118,7 +119,6 @@
         connPoolSync: {skip: "does not return user data"},
         connectionStatus: {skip: "does not return user data"},
         convertToCapped: {skip: "primary only"},
-        copydb: {skip: "primary only"},
         copydbsaslstart: {skip: "primary only"},
         count: {
             setUp: function(mongosConn) {
@@ -176,7 +176,6 @@
         emptycapped: {skip: "primary only"},
         enableSharding: {skip: "primary only"},
         endSessions: {skip: "does not return user data"},
-        eval: {skip: "must define test coverage for 4.0 backwards compatibility"},
         explain: {skip: "TODO SERVER-30068"},
         features: {skip: "does not return user data"},
         filemd5: {skip: "does not return user data"},
@@ -202,7 +201,6 @@
         forceerror: {skip: "does not return user data"},
         fsync: {skip: "does not return user data"},
         fsyncUnlock: {skip: "does not return user data"},
-        geoNear: {skip: "must define test coverage for 4.0 backwards compatibility"},
         geoSearch: {skip: "not supported in mongos"},
         getCmdLineOpts: {skip: "does not return user data"},
         getDiagnosticData: {skip: "does not return user data"},
@@ -218,7 +216,6 @@
         grantPrivilegesToRole: {skip: "primary only"},
         grantRolesToRole: {skip: "primary only"},
         grantRolesToUser: {skip: "primary only"},
-        group: {skip: "must define test coverage for 4.0 backwards compatibility"},
         handshake: {skip: "does not return user data"},
         hostInfo: {skip: "does not return user data"},
         insert: {skip: "primary only"},
@@ -279,7 +276,6 @@
         planCacheListQueryShapes: {skip: "does not return user data"},
         planCacheSetFilter: {skip: "does not return user data"},
         profile: {skip: "primary only"},
-        reIndex: {skip: "does not return user data"},
         reapLogicalSessionCacheNow: {skip: "does not return user data"},
         refreshLogicalSessionCacheNow: {skip: "does not return user data"},
         refreshSessions: {skip: "does not return user data"},
@@ -342,6 +338,10 @@
         whatsmyuri: {skip: "does not return user data"}
     };
 
+    commandsRemovedFromMongosIn42.forEach(function(cmd) {
+        testCases[cmd] = {skip: "must define test coverage for 4.0 backwards compatibility"};
+    });
+
     // Set the secondaries to priority 0 and votes 0 to prevent the primaries from stepping down.
     let rsOpts = {nodes: [{rsConfig: {votes: 1}}, {rsConfig: {priority: 0, votes: 0}}]};
     let st = new ShardingTest({mongos: 2, shards: {rs0: rsOpts, rs1: rsOpts}});
diff --git a/jstests/sharding/safe_secondary_reads_single_migration_waitForDelete.js b/jstests/sharding/safe_secondary_reads_single_migration_waitForDelete.js
index 1f372a38fed..03822856590 100644
--- a/jstests/sharding/safe_secondary_reads_single_migration_waitForDelete.js
+++ b/jstests/sharding/safe_secondary_reads_single_migration_waitForDelete.js
@@ -20,6 +20,7 @@
     "use strict";
 
     load('jstests/libs/profiler.js');
+    load('jstests/sharding/libs/last_stable_mongos_commands.js');
 
     let db = "test";
     let coll = "foo";
@@ -106,7 +107,6 @@
         connPoolSync: {skip: "does not return user data"},
         connectionStatus: {skip: "does not return user data"},
         convertToCapped: {skip: "primary only"},
-        copydb: {skip: "primary only"},
         copydbsaslstart: {skip: "primary only"},
         count: {
             setUp: function(mongosConn) {
@@ -154,7 +154,6 @@
         emptycapped: {skip: "primary only"},
         enableSharding: {skip: "primary only"},
         endSessions: {skip: "does not return user data"},
-        eval: {skip: "must define test coverage for 4.0 backwards compatibility"},
         explain: {skip: "TODO SERVER-30068"},
         features: {skip: "does not return user data"},
         filemd5: {skip: "does not return user data"},
@@ -175,7 +174,6 @@
         forceerror: {skip: "does not return user data"},
         fsync: {skip: "does not return user data"},
         fsyncUnlock: {skip: "does not return user data"},
-        geoNear: {skip: "must define test coverage for 4.0 backwards compatibility"},
         geoSearch: {skip: "not supported in mongos"},
         getCmdLineOpts: {skip: "does not return user data"},
         getDiagnosticData: {skip: "does not return user data"},
@@ -191,7 +189,6 @@
         grantPrivilegesToRole: {skip: "primary only"},
         grantRolesToRole: {skip: "primary only"},
         grantRolesToUser: {skip: "primary only"},
-        group: {skip: "must define test coverage for 4.0 backwards compatibility"},
         handshake: {skip: "does not return user data"},
         hostInfo: {skip: "does not return user data"},
         insert: {skip: "primary only"},
@@ -253,7 +250,6 @@
         refreshLogicalSessionCacheNow: {skip: "does not return user data"},
         refreshSessions: {skip: "does not return user data"},
         refreshSessionsInternal: {skip: "does not return user data"},
-        reIndex: {skip: "does not return user data"},
         removeShard: {skip: "primary only"},
         removeShardFromZone: {skip: "primary only"},
         renameCollection: {skip: "primary only"},
@@ -312,6 +308,10 @@
         whatsmyuri: {skip: "does not return user data"}
     };
 
+    commandsRemovedFromMongosIn42.forEach(function(cmd) {
+        testCases[cmd] = {skip: "must define test coverage for 4.0 backwards compatibility"};
+    });
+
     // Set the secondaries to priority 0 and votes 0 to prevent the primaries from stepping down.
     let rsOpts = {nodes: [{rsConfig: {votes: 1}}, {rsConfig: {priority: 0, votes: 0}}]};
     let st = new ShardingTest({mongos: 2, shards: {rs0: rsOpts, rs1: rsOpts}});
diff --git a/src/mongo/client/dbclient_base.cpp b/src/mongo/client/dbclient_base.cpp
index 5332e631759..378cc0a5e37 100644
--- a/src/mongo/client/dbclient_base.cpp
+++ b/src/mongo/client/dbclient_base.cpp
@@ -560,21 +560,6 @@ bool DBClientBase::createCollection(
     return runCommand(db.c_str(), b.done(), *info);
 }
 
-bool DBClientBase::copyDatabase(const string& fromdb,
-                                const string& todb,
-                                const string& fromhost,
-                                BSONObj* info) {
-    BSONObj o;
-    if (info == 0)
-        info = &o;
-    BSONObjBuilder b;
-    b.append("copydb", 1);
-    b.append("fromhost", fromhost);
-    b.append("fromdb", fromdb);
-    b.append("todb", todb);
-    return runCommand("admin", b.done(), *info);
-}
-
 list<BSONObj> DBClientBase::getCollectionInfos(const string& db, const BSONObj& filter) {
     list<BSONObj> infos;
 
diff --git a/src/mongo/client/dbclient_base.h b/src/mongo/client/dbclient_base.h
index 7ce43ba657b..cee91bd8bf0 100644
--- a/src/mongo/client/dbclient_base.h
+++ b/src/mongo/client/dbclient_base.h
@@ -424,31 +424,6 @@ public:
         return res;
     }
 
-    /** Copy database from one server or name to another server or name.
-
-       Generally, you should dropDatabase() first as otherwise the copied information will MERGE
-       into whatever data is already present in this database.
-
-       For security reasons this function only works when you are authorized to access the "admin"
-       db.  However, if you have access to said db, you can copy any database from one place to
-       another.
-       TODO: this needs enhancement to be more flexible in terms of security.
-
-       This method provides a way to "rename" a database by copying it to a new db name and
-       location.  The copy is "repaired" and compacted.
-
-       fromdb   database name from which to copy.
-       todb     database name to copy to.
-       fromhost hostname of the database (and optionally, ":port") from which to
-                copy the data.  copies from self if "".
-
-       returns true if successful
-    */
-    bool copyDatabase(const std::string& fromdb,
-                      const std::string& todb,
-                      const std::string& fromhost = "",
-                      BSONObj* info = 0);
-
     /** validate a collection, checking for errors and reporting back statistics.
         this operation is slow and blocking.
      */
diff --git a/src/mongo/client/mongo_uri_connect.cpp b/src/mongo/client/mongo_uri_connect.cpp
index 4ef8b7dc4a3..b81e98195a6 100644
--- a/src/mongo/client/mongo_uri_connect.cpp
+++ b/src/mongo/client/mongo_uri_connect.cpp
@@ -81,24 +81,6 @@ BSONObj parseAuthMechanismProperties(const std::string& propStr) {
     return bob.obj();
 }
 
-std::string authKeyCopyDBMongoCR(const std::string& username,
-                                 const std::string& password,
-                                 const std::string& nonce) {
-    md5digest d;
-    std::string passwordDigest = createPasswordDigest(username, password);
-    {
-        md5_state_t st;
-        md5_init(&st);
-        md5_append(&st, reinterpret_cast<const md5_byte_t*>(nonce.c_str()), nonce.size());
-        md5_append(&st, reinterpret_cast<const md5_byte_t*>(username.data()), username.length());
-        md5_append(&st,
-                   reinterpret_cast<const md5_byte_t*>(passwordDigest.c_str()),
-                   passwordDigest.size());
-        md5_finish(&st, d);
-    }
-    return digestToString(d);
-}
-
 }  // namespace
 
 BSONObj MongoURI::_makeAuthObjFromOptions(int maxWireVersion) const {
diff --git a/src/mongo/db/catalog/collection.h b/src/mongo/db/catalog/collection.h
index 5d5c5c368e2..deb0ceb3aad 100644
--- a/src/mongo/db/catalog/collection.h
+++ b/src/mongo/db/catalog/collection.h
@@ -426,7 +426,6 @@ public:
      * real delete.
      * 'loc' key to uniquely identify a record in a collection.
      * 'opDebug' Optional argument. When not null, will be used to record operation statistics.
-     * 'cappedOK' if true, allows deletes on capped collections (Cloner::copyDB uses this).
      * 'noWarn' if unindexing the record causes an error, if noWarn is true the error
      * will not be logged.
      */
diff --git a/src/mongo/db/cloner.cpp b/src/mongo/db/cloner.cpp
index 5208128d87d..2dce75495d9 100644
--- a/src/mongo/db/cloner.cpp
+++ b/src/mongo/db/cloner.cpp
@@ -46,7 +46,6 @@
 #include "mongo/db/catalog/database_holder.h"
 #include "mongo/db/catalog/index_create.h"
 #include "mongo/db/commands.h"
-#include "mongo/db/commands/copydb.h"
 #include "mongo/db/commands/list_collections_filter.h"
 #include "mongo/db/commands/rename_collection.h"
 #include "mongo/db/concurrency/write_conflict_exception.h"
diff --git a/src/mongo/db/cloner.h b/src/mongo/db/cloner.h
index 61c0694e8f3..4775eb00e33 100644
--- a/src/mongo/db/cloner.h
+++ b/src/mongo/db/cloner.h
@@ -58,7 +58,7 @@ public:
     /**
      * Copies an entire database from the specified host.
      * clonedColls: when not-null, the function will return with this populated with a list of
-     *              the collections that were cloned.  This is for the user-facing clone command.
+     *              the collections that were cloned.
      * collectionsToClone: When opts.createCollections is false, this list reflects the collections
      *              that are cloned.  When opts.createCollections is true, this parameter is
      *              ignored and the collection list is fetched from the remote via _conn.
diff --git a/src/mongo/db/commands/SConscript b/src/mongo/db/commands/SConscript
index 6d391e461bf..0d195add230 100644
--- a/src/mongo/db/commands/SConscript
+++ b/src/mongo/db/commands/SConscript
@@ -91,7 +91,6 @@ env.Library(
 env.Library(
     target="core",
     source=[
-        "copydb_common.cpp",
         "fail_point_cmd.cpp",
         "find_and_modify_common.cpp",
         "generic.cpp",
@@ -277,11 +276,9 @@ env.Library(
     target="mongod",
     source=[
         "apply_ops_cmd.cpp",
-        "clone.cpp",
         "clone_collection.cpp",
         "collection_to_capped.cpp",
         "compact.cpp",
-        "copydb.cpp",
         "copydb_start_commands.cpp",
         "cpuload.cpp",
         "dbcheck.cpp",
diff --git a/src/mongo/db/commands/clone.cpp b/src/mongo/db/commands/clone.cpp
deleted file mode 100644
index 451632600ed..00000000000
--- a/src/mongo/db/commands/clone.cpp
+++ /dev/null
@@ -1,144 +0,0 @@
-/**
-*    Copyright (C) 2008 10gen Inc.
-*
-*    This program is free software: you can redistribute it and/or  modify
-*    it under the terms of the GNU Affero General Public License, version 3,
-*    as published by the Free Software Foundation.
-*
-*    This program is distributed in the hope that it will be useful,
-*    but WITHOUT ANY WARRANTY; without even the implied warranty of
-*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-*    GNU Affero General Public License for more details.
-*
-*    You should have received a copy of the GNU Affero General Public License
-*    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*
-*    As a special exception, the copyright holders give permission to link the
-*    code of portions of this program with the OpenSSL library under certain
-*    conditions as described in each individual source file and distribute
-*    linked combinations including the program with the OpenSSL library. You
-*    must comply with the GNU Affero General Public License in all respects for
-*    all of the code used other than as permitted herein. If you modify file(s)
-*    with this exception, you may extend this exception to your version of the
-*    file(s), but you are not obligated to do so. If you do not wish to do so,
-*    delete this exception statement from your version. If you delete this
-*    exception statement from all source files in the program, then also delete
-*    it in the license file.
-*/
-
-#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kCommand
-#include "mongo/platform/basic.h"
-
-#include "mongo/base/status.h"
-#include "mongo/db/auth/action_set.h"
-#include "mongo/db/auth/authorization_session.h"
-#include "mongo/db/auth/resource_pattern.h"
-#include "mongo/db/catalog/document_validation.h"
-#include "mongo/db/cloner.h"
-#include "mongo/db/commands.h"
-#include "mongo/db/concurrency/d_concurrency.h"
-#include "mongo/db/jsobj.h"
-#include "mongo/s/grid.h"
-#include "mongo/util/log.h"
-
-namespace {
-
-using namespace mongo;
-
-using std::set;
-using std::string;
-using std::stringstream;
-
-/* The clone command is deprecated. See http://dochub.mongodb.org/core/copydb-clone-deprecation.
-   Usage:
-   mydb.$cmd.findOne( { clone: "fromhost" } );
-   Note: doesn't work with authentication enabled, except as internal operation or for
-   old-style users for backwards compatibility.
-*/
-class CmdClone : public BasicCommand {
-public:
-    CmdClone() : BasicCommand("clone") {}
-
-    AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
-        return AllowedOnSecondary::kNever;
-    }
-
-    virtual bool supportsWriteConcern(const BSONObj& cmd) const override {
-        return true;
-    }
-
-    std::string help() const override {
-        return "clone this database from an instance of the db on another host\n"
-               "{clone: \"host13\"[, slaveOk: <bool>]}";
-    }
-
-    virtual Status checkAuthForCommand(Client* client,
-                                       const std::string& dbname,
-                                       const BSONObj& cmdObj) const {
-        ActionSet actions;
-        actions.addAction(ActionType::insert);
-        actions.addAction(ActionType::createIndex);
-        if (shouldBypassDocumentValidationForCommand(cmdObj)) {
-            actions.addAction(ActionType::bypassDocumentValidation);
-        }
-
-        if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
-                ResourcePattern::forDatabaseName(dbname), actions)) {
-            return Status(ErrorCodes::Unauthorized, "Unauthorized");
-        }
-        return Status::OK();
-    }
-
-    virtual bool run(OperationContext* opCtx,
-                     const string& dbname,
-                     const BSONObj& cmdObj,
-                     BSONObjBuilder& result) {
-        const char* deprecationWarning =
-            "Support for the clone command has been deprecated. See "
-            "http://dochub.mongodb.org/core/copydb-clone-deprecation";
-        warning() << deprecationWarning;
-        result.append("note", deprecationWarning);
-        boost::optional<DisableDocumentValidation> maybeDisableValidation;
-        if (shouldBypassDocumentValidationForCommand(cmdObj)) {
-            maybeDisableValidation.emplace(opCtx);
-        }
-
-        string from = cmdObj.getStringField("clone");
-        if (from.empty())
-            return false;
-
-        CloneOptions opts;
-        opts.fromDB = dbname;
-        opts.slaveOk = cmdObj["slaveOk"].trueValue();
-
-        // collsToIgnore is only used by movePrimary and contains a list of the
-        // sharded collections.
-        if (cmdObj["collsToIgnore"].type() == Array) {
-            BSONObjIterator it(cmdObj["collsToIgnore"].Obj());
-
-            while (it.more()) {
-                BSONElement e = it.next();
-                if (e.type() == String) {
-                    opts.shardedColls.insert(e.String());
-                }
-            }
-        }
-
-        // Clone the non-ignored collections.
-        set<string> clonedColls;
-        Lock::DBLock dbXLock(opCtx, dbname, MODE_X);
-
-        Cloner cloner;
-        Status status = cloner.copyDb(opCtx, dbname, from, opts, &clonedColls);
-
-        BSONArrayBuilder barr;
-        barr.append(clonedColls);
-        result.append("clonedColls", barr.arr());
-
-        uassertStatusOK(status);
-        return true;
-    }
-
-} cmdClone;
-
-}  // namespace
diff --git a/src/mongo/db/commands/clone_collection.cpp b/src/mongo/db/commands/clone_collection.cpp
index 3aa2c3ddc9e..af8d26eb518 100644
--- a/src/mongo/db/commands/clone_collection.cpp
+++ b/src/mongo/db/commands/clone_collection.cpp
@@ -41,7 +41,6 @@
 #include "mongo/db/catalog/document_validation.h"
 #include "mongo/db/cloner.h"
 #include "mongo/db/commands.h"
-#include "mongo/db/commands/copydb.h"
 #include "mongo/db/commands/rename_collection.h"
 #include "mongo/db/db.h"
 #include "mongo/db/index_builder.h"
diff --git a/src/mongo/db/commands/copydb.cpp b/src/mongo/db/commands/copydb.cpp
deleted file mode 100644
index 7b799d10bbf..00000000000
--- a/src/mongo/db/commands/copydb.cpp
+++ /dev/null
@@ -1,232 +0,0 @@
-/**
-*    Copyright (C) 2008 10gen Inc.
-*
-*    This program is free software: you can redistribute it and/or  modify
-*    it under the terms of the GNU Affero General Public License, version 3,
-*    as published by the Free Software Foundation.
-*
-*    This program is distributed in the hope that it will be useful,
-*    but WITHOUT ANY WARRANTY; without even the implied warranty of
-*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-*    GNU Affero General Public License for more details.
-*
-*    You should have received a copy of the GNU Affero General Public License
-*    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*
-*    As a special exception, the copyright holders give permission to link the
-*    code of portions of this program with the OpenSSL library under certain
-*    conditions as described in each individual source file and distribute
-*    linked combinations including the program with the OpenSSL library. You
-*    must comply with the GNU Affero General Public License in all respects for
-*    all of the code used other than as permitted herein. If you modify file(s)
-*    with this exception, you may extend this exception to your version of the
-*    file(s), but you are not obligated to do so. If you do not wish to do so,
-*    delete this exception statement from your version. If you delete this
-*    exception statement from all source files in the program, then also delete
-*    it in the license file.
-*/
-
-#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kCommand
-#include "mongo/platform/basic.h"
-
-#include "mongo/base/status.h"
-#include "mongo/client/sasl_client_authenticate.h"
-#include "mongo/db/auth/action_set.h"
-#include "mongo/db/auth/authorization_session.h"
-#include "mongo/db/auth/resource_pattern.h"
-#include "mongo/db/auth/sasl_command_constants.h"
-#include "mongo/db/catalog/document_validation.h"
-#include "mongo/db/catalog_raii.h"
-#include "mongo/db/cloner.h"
-#include "mongo/db/commands.h"
-#include "mongo/db/commands/copydb.h"
-#include "mongo/db/commands/copydb_start_commands.h"
-#include "mongo/db/concurrency/d_concurrency.h"
-#include "mongo/db/jsobj.h"
-#include "mongo/db/namespace_string.h"
-#include "mongo/util/log.h"
-
-namespace {
-
-using namespace mongo;
-
-using std::string;
-using std::stringstream;
-
-/* The copydb command is deprecated. See http://dochub.mongodb.org/core/copydb-clone-deprecation.
- * Usage:
- * admindb.$cmd.findOne( { copydb: 1, fromhost: <connection string>, fromdb: <db>,
- *                         todb: <db>[, username: <username>, nonce: <nonce>, key: <key>] } );
- *
- * The "copydb" command is used to copy a database.  Note that this is a very broad definition.
- * This means that the "copydb" command can be used in the following ways:
- *
- * 1. To copy a database within a single node
- * 2. To copy a database within a sharded cluster, possibly to another shard
- * 3. To copy a database from one cluster to another
- *
- * Note that in all cases both the target and source database must be unsharded.
- *
- * The "copydb" command gets sent by the client or the mongos to the destination of the copy
- * operation.  The node, cluster, or shard that recieves the "copydb" command must then query
- * the source of the database to be copied for all the contents and metadata of the database.
- *
- *
- *
- * When used with auth, there are two different considerations.
- *
- * The first is authentication with the target.  The only entity that needs to authenticate with
- * the target node is the client, so authentication works there the same as it would with any
- * other command.
- *
- * The second is the authentication of the target with the source, which is needed because the
- * target must query the source directly for the contents of the database.  To do this, the
- * client must use the "copydbgetnonce" command, in which the target will get a nonce from the
- * source and send it back to the client.  The client can then hash its password with the nonce,
- * send it to the target when it runs the "copydb" command, which can then use that information
- * to authenticate with the source.
- *
- * NOTE: mongos doesn't know how to call or handle the "copydbgetnonce" command.  See
- * SERVER-6427.
- *
- * NOTE: Since internal cluster auth works differently, "copydb" currently doesn't work between
- * shards in a cluster when auth is enabled.  See SERVER-13080.
- */
-class CmdCopyDb : public ErrmsgCommandDeprecated {
-public:
-    CmdCopyDb() : ErrmsgCommandDeprecated("copydb") {}
-
-    virtual bool adminOnly() const {
-        return true;
-    }
-
-    AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
-        return AllowedOnSecondary::kNever;
-    }
-
-    virtual bool supportsWriteConcern(const BSONObj& cmd) const override {
-        return true;
-    }
-
-    virtual Status checkAuthForCommand(Client* client,
-                                       const std::string& dbname,
-                                       const BSONObj& cmdObj) const {
-        return copydb::checkAuthForCopydbCommand(client, dbname, cmdObj);
-    }
-
-    std::string help() const override {
-        return "copy a database from another host to this host\n"
-               "usage: {copydb: 1, fromhost: <connection string>, fromdb: <db>, todb: <db>"
-               "[, slaveOk: <bool>, username: <username>, nonce: <nonce>, key: <key>]}";
-    }
-
-    virtual bool errmsgRun(OperationContext* opCtx,
-                           const string& dbname,
-                           const BSONObj& cmdObj,
-                           string& errmsg,
-                           BSONObjBuilder& result) {
-        const char* deprecationWarning =
-            "Support for the copydb command has been deprecated. See "
-            "http://dochub.mongodb.org/core/copydb-clone-deprecation";
-        warning() << deprecationWarning;
-        result.append("note", deprecationWarning);
-        boost::optional<DisableDocumentValidation> maybeDisableValidation;
-        if (shouldBypassDocumentValidationForCommand(cmdObj))
-            maybeDisableValidation.emplace(opCtx);
-
-        string fromhost = cmdObj.getStringField("fromhost");
-        bool fromSelf = fromhost.empty();
-        if (fromSelf) {
-            /* copy from self */
-            stringstream ss;
-            ss << "localhost:" << serverGlobalParams.port;
-            fromhost = ss.str();
-        }
-
-        CloneOptions cloneOptions;
-        const auto fromdbElt = cmdObj["fromdb"];
-        uassert(ErrorCodes::TypeMismatch,
-                "'fromdb' must be of type String",
-                fromdbElt.type() == BSONType::String);
-        cloneOptions.fromDB = fromdbElt.str();
-        cloneOptions.slaveOk = cmdObj["slaveOk"].trueValue();
-        cloneOptions.useReplAuth = false;
-
-        const auto todbElt = cmdObj["todb"];
-        uassert(ErrorCodes::TypeMismatch,
-                "'todb' must be of type String",
-                todbElt.type() == BSONType::String);
-        const std::string todb = todbElt.str();
-
-        uassert(ErrorCodes::InvalidNamespace,
-                str::stream() << "Invalid 'todb' name: " << todb,
-                NamespaceString::validDBName(todb, NamespaceString::DollarInDbNameBehavior::Allow));
-        uassert(ErrorCodes::InvalidNamespace,
-                str::stream() << "Invalid 'fromdb' name: " << cloneOptions.fromDB,
-                NamespaceString::validDBName(cloneOptions.fromDB,
-                                             NamespaceString::DollarInDbNameBehavior::Allow));
-
-        if (fromhost.empty()) {
-            errmsg =
-                "params missing - {copydb: 1, fromhost: <connection string>, "
-                "fromdb: <db>, todb: <db>}";
-            return false;
-        }
-
-        Cloner cloner;
-
-        auto& authConn = CopyDbAuthConnection::forClient(opCtx->getClient());
-
-        if (cmdObj.hasField(saslCommandConversationIdFieldName) &&
-            cmdObj.hasField(saslCommandPayloadFieldName)) {
-            uassert(25487, "must call copydbsaslstart first", authConn.get());
-            BSONObj ret;
-            if (!authConn->runCommand(
-                    cloneOptions.fromDB,
-                    BSON("saslContinue" << 1 << cmdObj[saslCommandConversationIdFieldName]
-                                        << cmdObj[saslCommandPayloadFieldName]),
-                    ret)) {
-                errmsg = "unable to login " + ret.toString();
-                authConn.reset();
-                return false;
-            }
-
-            if (!ret["done"].Bool()) {
-                CommandHelpers::filterCommandReplyForPassthrough(ret, &result);
-                return true;
-            }
-
-            result.append("done", true);
-            cloner.setConnection(std::move(authConn));
-        } else if (!fromSelf) {
-            // If fromSelf leave the cloner's conn empty, it will use a DBDirectClient instead.
-            const ConnectionString cs(uassertStatusOK(ConnectionString::parse(fromhost)));
-
-            auto conn = cs.connect(StringData(), errmsg);
-            if (!conn) {
-                return false;
-            }
-            cloner.setConnection(std::move(conn));
-        }
-
-        // Either we didn't need the authConn (if we even had one), or we already moved it
-        // into the cloner so just make sure we don't keep it around if we don't need it.
-        authConn.reset();
-
-        if (fromSelf) {
-            // SERVER-4328 todo lock just the two db's not everything for the fromself case
-            // SERVER-34431 TODO: Add calls to DatabaseShardingState::get().checkDbVersion()
-            // for source databases.
-            Lock::GlobalWrite lk(opCtx);
-            uassertStatusOK(cloner.copyDb(opCtx, todb, fromhost, cloneOptions, NULL));
-        } else {
-            AutoGetDb autoDb(opCtx, todb, MODE_X);
-            uassertStatusOK(cloner.copyDb(opCtx, todb, fromhost, cloneOptions, NULL));
-        }
-
-        return true;
-    }
-
-} cmdCopyDB;
-
-}  // namespace
diff --git a/src/mongo/db/commands/copydb.h b/src/mongo/db/commands/copydb.h
deleted file mode 100644
index 0f2cec12a72..00000000000
--- a/src/mongo/db/commands/copydb.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/**
- *    Copyright (C) 2013 10gen Inc.
- *
- *    This program is free software: you can redistribute it and/or  modify
- *    it under the terms of the GNU Affero General Public License, version 3,
- *    as published by the Free Software Foundation.
- *
- *    This program is distributed in the hope that it will be useful,
- *    but WITHOUT ANY WARRANTY; without even the implied warranty of
- *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *    GNU Affero General Public License for more details.
- *
- *    You should have received a copy of the GNU Affero General Public License
- *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- *    As a special exception, the copyright holders give permission to link the
- *    code of portions of this program with the OpenSSL library under certain
- *    conditions as described in each individual source file and distribute
- *    linked combinations including the program with the OpenSSL library. You
- *    must comply with the GNU Affero General Public License in all respects for
- *    all of the code used other than as permitted herein. If you modify file(s)
- *    with this exception, you may extend this exception to your version of the
- *    file(s), but you are not obligated to do so. If you do not wish to do so,
- *    delete this exception statement from your version. If you delete this
- *    exception statement from all source files in the program, then also delete
- *    it in the license file.
- */
-
-#pragma once
-
-#include <string>
-#include <vector>
-
-#include "mongo/db/auth/privilege.h"
-#include "mongo/db/jsobj.h"
-
-namespace mongo {
-
-class Client;
-
-namespace copydb {
-
-Status checkAuthForCopydbCommand(Client* client, const std::string& dbname, const BSONObj& cmdObj);
-
-}  // namespace copydb
-}  // namespace mongo
diff --git a/src/mongo/db/commands/copydb_common.cpp b/src/mongo/db/commands/copydb_common.cpp
deleted file mode 100644
index 583c4054cfc..00000000000
--- a/src/mongo/db/commands/copydb_common.cpp
+++ /dev/null
@@ -1,112 +0,0 @@
-/**
-*    Copyright (C) 2013 10gen Inc.
-*
-*    This program is free software: you can redistribute it and/or  modify
-*    it under the terms of the GNU Affero General Public License, version 3,
-*    as published by the Free Software Foundation.
-*
-*    This program is distributed in the hope that it will be useful,
-*    but WITHOUT ANY WARRANTY; without even the implied warranty of
-*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-*    GNU Affero General Public License for more details.
-*
-*    You should have received a copy of the GNU Affero General Public License
-*    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*
-*    As a special exception, the copyright holders give permission to link the
-*    code of portions of this program with the OpenSSL library under certain
-*    conditions as described in each individual source file and distribute
-*    linked combinations including the program with the OpenSSL library. You
-*    must comply with the GNU Affero General Public License in all respects for
-*    all of the code used other than as permitted herein. If you modify file(s)
-*    with this exception, you may extend this exception to your version of the
-*    file(s), but you are not obligated to do so. If you do not wish to do so,
-*    delete this exception statement from your version. If you delete this
-*    exception statement from all source files in the program, then also delete
-*    it in the license file.
-*/
-
-#include "mongo/db/commands/copydb.h"
-
-#include <string>
-#include <vector>
-
-#include "mongo/db/auth/action_set.h"
-#include "mongo/db/auth/action_type.h"
-#include "mongo/db/auth/authorization_session.h"
-#include "mongo/db/auth/privilege.h"
-#include "mongo/db/catalog/document_validation.h"
-#include "mongo/db/client.h"
-#include "mongo/db/jsobj.h"
-#include "mongo/db/namespace_string.h"
-
-namespace mongo {
-namespace copydb {
-
-Status checkAuthForCopydbCommand(Client* client, const std::string& dbname, const BSONObj& cmdObj) {
-    const auto fromdbElt = cmdObj["fromdb"];
-    if (fromdbElt.type() != BSONType::String) {
-        return Status(ErrorCodes::TypeMismatch, "'fromdb' must be of type String");
-    }
-    const auto todbElt = cmdObj["todb"];
-    if (todbElt.type() != BSONType::String) {
-        return Status(ErrorCodes::TypeMismatch, "'todb' must be of type String");
-    }
-
-    bool fromSelf = StringData(cmdObj.getStringField("fromhost")).empty();
-    const StringData fromdb = fromdbElt.valueStringData();
-    const StringData todb = todbElt.valueStringData();
-
-    // get system collections
-    std::vector<std::string> legalClientSystemCollections;
-    legalClientSystemCollections.push_back("system.js");
-    if (fromdb == "admin") {
-        legalClientSystemCollections.push_back("system.users");
-        legalClientSystemCollections.push_back("system.roles");
-        legalClientSystemCollections.push_back("system.version");
-    } else if (fromdb == "local") {  // TODO(spencer): shouldn't be possible. See SERVER-11383
-        legalClientSystemCollections.push_back("system.replset");
-    }
-
-    // Check authorization on destination db
-    ActionSet actions;
-    actions.addAction(ActionType::insert);
-    actions.addAction(ActionType::createIndex);
-    if (shouldBypassDocumentValidationForCommand(cmdObj)) {
-        actions.addAction(ActionType::bypassDocumentValidation);
-    }
-
-    if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
-            ResourcePattern::forDatabaseName(todb), actions)) {
-        return Status(ErrorCodes::Unauthorized, "Unauthorized");
-    }
-
-    actions.removeAllActions();
-    actions.addAction(ActionType::insert);
-    for (size_t i = 0; i < legalClientSystemCollections.size(); ++i) {
-        if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnNamespace(
-                NamespaceString(todb, legalClientSystemCollections[i]), actions)) {
-            return Status(ErrorCodes::Unauthorized, "Unauthorized");
-        }
-    }
-
-    if (fromSelf) {
-        // If copying from self, also require privileges on source db
-        actions.removeAllActions();
-        actions.addAction(ActionType::find);
-        if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
-                ResourcePattern::forDatabaseName(fromdb), actions)) {
-            return Status(ErrorCodes::Unauthorized, "Unauthorized");
-        }
-        for (size_t i = 0; i < legalClientSystemCollections.size(); ++i) {
-            if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnNamespace(
-                    NamespaceString(fromdb, legalClientSystemCollections[i]), actions)) {
-                return Status(ErrorCodes::Unauthorized, "Unauthorized");
-            }
-        }
-    }
-    return Status::OK();
-}
-
-}  // namespace copydb
-}  // namespace mongo
diff --git a/src/mongo/db/commands/copydb_start_commands.cpp b/src/mongo/db/commands/copydb_start_commands.cpp
index e06116a9bd8..495e17093d8 100644
--- a/src/mongo/db/commands/copydb_start_commands.cpp
+++ b/src/mongo/db/commands/copydb_start_commands.cpp
@@ -41,7 +41,6 @@
 #include "mongo/db/client.h"
 #include "mongo/db/cloner.h"
 #include "mongo/db/commands.h"
-#include "mongo/db/commands/copydb.h"
 #include "mongo/db/jsobj.h"
 #include "mongo/db/operation_context.h"
 #include "mongo/rpc/get_status_from_command_result.h"
diff --git a/src/mongo/embedded/common-operations.cpp b/src/mongo/embedded/common-operations.cpp
deleted file mode 100644
index 4a6d7e08a24..00000000000
--- a/src/mongo/embedded/common-operations.cpp
+++ /dev/null
@@ -1,247 +0,0 @@
-/**
- *    Copyright (C) 2017 MongoDB Inc.
- *
- *    This program is free software: you can redistribute it and/or  modify
- *    it under the terms of the GNU Affero General Public License, version 3,
- *    as published by the Free Software Foundation.
- *
- *    This program is distributed in the hope that it will be useful,
- *    but WITHOUT ANY WARRANTY; without even the implied warranty of
- *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *    GNU Affero General Public License for more details.
- *
- *    You should have received a copy of the GNU Affero General Public License
- *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- *    As a special exception, the copyright holders give permission to link the
- *    code of portions of this program with the OpenSSL library under certain
- *    conditions as described in each individual source file and distribute
- *    linked combinations including the program with the OpenSSL library. You
- *    must comply with the GNU Affero General Public License in all respects
- *    for all of the code used other than as permitted herein. If you modify
- *    file(s) with this exception, you may extend this exception to your
- *    version of the file(s), but you are not obligated to do so. If you do not
- *    wish to do so, delete this exception statement from your version. If you
- *    delete this exception statement from all source files in the program,
- *    then also delete it in the license file.
- */
-
-#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kStorage
-
-#include "mongo/embedded/common-operations.h"
-
-#include <mongoc.h>
-#include <stdio.h>
-
-#include "mongo/embedded/mongoc_client.h"
-#include "mongo/util/log.h"
-
-/**
- * WARNING: This function is an example lifted directly from the C driver
- * for use testing the connection to the c driver. It is written in C,
- * and should not be used for anything besides basic testing.
- */
-bool mongo::embeddedTest::insert_data(mongoc_collection_t* collection) {
-    mongoc_bulk_operation_t* bulk;
-    enum N { ndocs = 4 };
-    bson_t* docs[ndocs];
-    bson_error_t error;
-    int i = 0;
-    bool ret;
-
-    bulk = mongoc_collection_create_bulk_operation(collection, true, NULL);
-
-    docs[0] = BCON_NEW("x", BCON_DOUBLE(1.0), "tags", "[", "dog", "cat", "]");
-    docs[1] = BCON_NEW("x", BCON_DOUBLE(2.0), "tags", "[", "cat", "]");
-    docs[2] = BCON_NEW("x", BCON_DOUBLE(2.0), "tags", "[", "mouse", "cat", "dog", "]");
-    docs[3] = BCON_NEW("x", BCON_DOUBLE(3.0), "tags", "[", "]");
-
-    for (i = 0; i < ndocs; i++) {
-        mongoc_bulk_operation_insert(bulk, docs[i]);
-        bson_destroy(docs[i]);
-        docs[i] = NULL;
-    }
-
-    ret = mongoc_bulk_operation_execute(bulk, NULL, &error);
-
-    if (!ret) {
-        log() << "Error inserting data: " << error.message;
-    }
-
-    mongoc_bulk_operation_destroy(bulk);
-    return ret;
-}
-
-/**
- * WARNING: This function is an example lifted directly from the C driver
- * for use testing the connection to the c driver. It is written in C,
- * and should not be used for anything besides basic testing.
- */
-bool copydb(mongoc_client_t* client, const char* other_host_and_port) {
-    mongoc_database_t* admindb;
-    bson_t* command;
-    bson_t reply;
-    bson_error_t error;
-    bool res;
-
-    BSON_ASSERT(other_host_and_port);
-    /* Must do this from the admin db */
-    admindb = mongoc_client_get_database(client, "admin");
-
-    command = BCON_NEW("copydb",
-                       BCON_INT32(1),
-                       "fromdb",
-                       BCON_UTF8("test"),
-                       "todb",
-                       BCON_UTF8("test2"),
-
-                       /* If you want from a different host */
-                       "fromhost",
-                       BCON_UTF8(other_host_and_port));
-    res = mongoc_database_command_simple(admindb, command, NULL, &reply, &error);
-    if (!res) {
-        mongo::log() << "Error with copydb: " << error.message;
-        goto copy_cleanup;
-    }
-
-
-copy_cleanup:
-    bson_destroy(&reply);
-    bson_destroy(command);
-    mongoc_database_destroy(admindb);
-
-    return res;
-}
-/**
- * WARNING: This function is an example lifted directly from the C driver
- * for use testing the connection to the c driver. It is written in C,
- * and should not be used for anything besides basic testing.
- */
-bool clone_collection(mongoc_database_t* database, const char* other_host_and_port) {
-    bson_t* command;
-    bson_t reply;
-    bson_error_t error;
-    bool res;
-
-    BSON_ASSERT(other_host_and_port);
-    command = BCON_NEW("cloneCollection",
-                       BCON_UTF8("test.remoteThings"),
-                       "from",
-                       BCON_UTF8(other_host_and_port),
-                       "query",
-                       "{",
-                       "x",
-                       BCON_INT32(1),
-                       "}");
-    res = mongoc_database_command_simple(database, command, NULL, &reply, &error);
-    if (!res) {
-        mongo::log() << "Error with clone: " << error.message;
-        goto clone_cleanup;
-    }
-
-
-clone_cleanup:
-    bson_destroy(&reply);
-    bson_destroy(command);
-
-    return res;
-}
-/**
- * WARNING: This function is an example lifted directly from the C driver
- * for use testing the connection to the c driver. It is written in C,
- * and should not be used for anything besides basic testing.
- */
-bool mongo::embeddedTest::explain(mongoc_collection_t* collection) {
-
-    bson_t* command;
-    bson_t reply;
-    bson_error_t error;
-    bool res;
-
-    command = BCON_NEW("explain",
-                       "{",
-                       "find",
-                       BCON_UTF8((const char*)"things"),
-                       "filter",
-                       "{",
-                       "x",
-                       BCON_INT32(1),
-                       "}",
-                       "}");
-    res = mongoc_collection_command_simple(collection, command, NULL, &reply, &error);
-    if (!res) {
-        log() << "Error with explain: " << error.message;
-        goto explain_cleanup;
-    }
-
-
-explain_cleanup:
-    bson_destroy(&reply);
-    bson_destroy(command);
-    return res;
-}
-/**
- * WARNING: This function is an example lifted directly from the C driver
- * for use testing the connection to the c driver. It is written in C,
- * and should not be used for anything besides basic testing.
- */
-int mongo::embeddedTest::run_c_driver_all() {
-    mongoc_database_t* database = NULL;
-    mongoc_client_t* client = NULL;
-    mongoc_collection_t* collection = NULL;
-    char* host_and_port = NULL;
-    int res = 0;
-    char* other_host_and_port = NULL;
-
-
-    client = mongoc_client_new(NULL);
-
-    if (!client) {
-        log() << " Invalid client ";
-        res = 2;
-        goto cleanup;
-    }
-
-    mongoc_client_set_error_api(client, 2);
-    database = mongoc_client_get_database(client, "test");
-    collection = mongoc_database_get_collection(database, (const char*)"things");
-
-    if (!mongo::embeddedTest::insert_data(collection)) {
-        res = 3;
-        goto cleanup;
-    }
-
-    if (!mongo::embeddedTest::explain(collection)) {
-        res = 4;
-        goto cleanup;
-    }
-
-    if (other_host_and_port) {
-        if (!copydb(client, other_host_and_port)) {
-            res = 5;
-            goto cleanup;
-        }
-
-        if (!clone_collection(database, other_host_and_port)) {
-            res = 6;
-            goto cleanup;
-        }
-    }
-
-cleanup:
-    if (collection) {
-        mongoc_collection_destroy(collection);
-    }
-
-    if (database) {
-        mongoc_database_destroy(database);
-    }
-
-    if (client) {
-        mongoc_client_destroy(client);
-    }
-
-    bson_free(host_and_port);
-    mongoc_cleanup();
-    return res;
-}
diff --git a/src/mongo/embedded/common-operations.h b/src/mongo/embedded/common-operations.h
deleted file mode 100644
index b5f91eb1d23..00000000000
--- a/src/mongo/embedded/common-operations.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/**
- *    Copyright (C) 2017 MongoDB Inc.
- *
- *    This program is free software: you can redistribute it and/or  modify
- *    it under the terms of the GNU Affero General Public License, version 3,
- *    as published by the Free Software Foundation.
- *
- *    This program is distributed in the hope that it will be useful,
- *    but WITHOUT ANY WARRANTY; without even the implied warranty of
- *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *    GNU Affero General Public License for more details.
- *
- *    You should have received a copy of the GNU Affero General Public License
- *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- *    As a special exception, the copyright holders give permission to link the
- *    code of portions of this program with the OpenSSL library under certain
- *    conditions as described in each individual source file and distribute
- *    linked combinations including the program with the OpenSSL library. You
- *    must comply with the GNU Affero General Public License in all respects
- *    for all of the code used other than as permitted herein. If you modify
- *    file(s) with this exception, you may extend this exception to your
- *    version of the file(s), but you are not obligated to do so. If you do not
- *    wish to do so, delete this exception statement from your version. If you
- *    delete this exception statement from all source files in the program,
- *    then also delete it in the license file.
- */
-
-#pragma once
-
-#include <mongoc.h>
-
-namespace mongo {
-
-namespace embeddedTest {
-
-bool explain(mongoc_collection_t* collection);
-
-bool insert_data(mongoc_collection_t* collection);
-
-int run_c_driver_all();
-
-}  // namespace embeddedTest
-
-}  // namespace mongo
diff --git a/src/mongo/embedded/functions_for_test.cpp b/src/mongo/embedded/functions_for_test.cpp
index 6f1b78f07f8..d0e5d78cc0c 100644
--- a/src/mongo/embedded/functions_for_test.cpp
+++ b/src/mongo/embedded/functions_for_test.cpp
@@ -75,46 +75,6 @@ bool mongo::embeddedTest::insert_data(mongoc_collection_t* collection) {
  * for use testing the connection to the c driver. It is written in C,
  * and should not be used for anything besides basic testing.
  */
-bool copydb(mongoc_client_t* client, const char* other_host_and_port) {
-    mongoc_database_t* admindb;
-    bson_t* command;
-    bson_t reply;
-    bson_error_t error;
-    bool res;
-
-    BSON_ASSERT(other_host_and_port);
-    /* Must do this from the admin db */
-    admindb = mongoc_client_get_database(client, "admin");
-
-    command = BCON_NEW("copydb",
-                       BCON_INT32(1),
-                       "fromdb",
-                       BCON_UTF8("test"),
-                       "todb",
-                       BCON_UTF8("test2"),
-
-                       /* If you want from a different host */
-                       "fromhost",
-                       BCON_UTF8(other_host_and_port));
-    res = mongoc_database_command_simple(admindb, command, NULL, &reply, &error);
-    if (!res) {
-        mongo::log() << "Error with copydb: " << error.message;
-        goto copy_cleanup;
-    }
-
-
-copy_cleanup:
-    bson_destroy(&reply);
-    bson_destroy(command);
-    mongoc_database_destroy(admindb);
-
-    return res;
-}
-/**
- * WARNING: This function is an example lifted directly from the C driver
- * for use testing the connection to the c driver. It is written in C,
- * and should not be used for anything besides basic testing.
- */
 bool clone_collection(mongoc_database_t* database, const char* other_host_and_port) {
     bson_t* command;
     bson_t reply;
@@ -215,13 +175,8 @@ int mongo::embeddedTest::run_c_driver_all() {
     }
 
     if (other_host_and_port) {
-        if (!copydb(client, other_host_and_port)) {
-            res = 5;
-            goto cleanup;
-        }
-
         if (!clone_collection(database, other_host_and_port)) {
-            res = 6;
+            res = 5;
             goto cleanup;
         }
     }
diff --git a/src/mongo/s/commands/commands_public.cpp b/src/mongo/s/commands/commands_public.cpp
index 3b92e72caed..96c448988aa 100644
--- a/src/mongo/s/commands/commands_public.cpp
+++ b/src/mongo/s/commands/commands_public.cpp
@@ -37,7 +37,6 @@
 #include "mongo/db/auth/authorization_session.h"
 #include "mongo/db/auth/privilege.h"
 #include "mongo/db/commands.h"
-#include "mongo/db/commands/copydb.h"
 #include "mongo/db/commands/rename_collection.h"
 #include "mongo/executor/task_executor_pool.h"
 #include "mongo/rpc/get_status_from_command_result.h"
@@ -232,107 +231,6 @@ public:
 
 } renameCollectionCmd;
 
-class CopyDBCmd : public BasicCommand {
-public:
-    CopyDBCmd() : BasicCommand("copydb") {}
-
-    AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
-        return AllowedOnSecondary::kNever;
-    }
-
-    bool adminOnly() const override {
-        return true;
-    }
-
-    Status checkAuthForCommand(Client* client,
-                               const std::string& dbname,
-                               const BSONObj& cmdObj) const override {
-        return copydb::checkAuthForCopydbCommand(client, dbname, cmdObj);
-    }
-
-    bool supportsWriteConcern(const BSONObj& cmd) const override {
-        return true;
-    }
-
-    bool run(OperationContext* opCtx,
-             const std::string& dbName,
-             const BSONObj& cmdObj,
-             BSONObjBuilder& result) override {
-        const auto todbElt = cmdObj["todb"];
-        uassert(ErrorCodes::InvalidNamespace,
-                "'todb' must be of type String",
-                todbElt.type() == BSONType::String);
-        const std::string todb = todbElt.str();
-        uassert(ErrorCodes::InvalidNamespace,
-                "Invalid todb argument",
-                NamespaceString::validDBName(todb, NamespaceString::DollarInDbNameBehavior::Allow));
-
-        auto toDbInfo = uassertStatusOK(createShardDatabase(opCtx, todb));
-        uassert(ErrorCodes::IllegalOperation,
-                "Cannot copy to a sharded database",
-                !toDbInfo.shardingEnabled());
-
-        const auto copyDbCmdObj = cmdObj["fromhost"] ? cmdObj : [&] {
-            const auto fromDbElt = cmdObj["fromdb"];
-            uassert(ErrorCodes::InvalidNamespace,
-                    "'fromdb' must be of type String",
-                    fromDbElt.type() == BSONType::String);
-            const std::string fromdb = fromDbElt.str();
-            uassert(ErrorCodes::InvalidNamespace,
-                    "invalid fromdb argument",
-                    NamespaceString::validDBName(fromdb,
-                                                 NamespaceString::DollarInDbNameBehavior::Allow));
-
-            auto fromDbInfo = uassertStatusOK(createShardDatabase(opCtx, fromdb));
-            uassert(ErrorCodes::IllegalOperation,
-                    "Cannot copy from a sharded database",
-                    !fromDbInfo.shardingEnabled());
-
-            // If the source and destination are the same, there is no need to attach the 'fromhost'
-            // field since the copy is entirely local to the node
-            if (fromDbInfo.primaryId() == toDbInfo.primaryId()) {
-                return cmdObj;
-            }
-
-            BSONObjBuilder copyDbCmdObjBuilder;
-
-            // Copy everything but the "fromhost" parameter
-            BSONForEach(e, cmdObj) {
-                if (strcmp(e.fieldName(), "fromhost")) {
-                    copyDbCmdObjBuilder.append(e);
-                }
-            }
-
-            // Append "fromhost" as the database's primary
-            {
-                const auto shard = uassertStatusOK(
-                    Grid::get(opCtx)->shardRegistry()->getShard(opCtx, fromDbInfo.primaryId()));
-                copyDbCmdObjBuilder.append("fromhost", shard->getConnString().toString());
-            }
-
-            return copyDbCmdObjBuilder.obj();
-        }();
-
-        // copyDb creates multiple collections and should handle collection creation differently
-        auto response = executeCommandAgainstDatabasePrimary(
-            opCtx,
-            NamespaceString::kAdminDb,
-            toDbInfo,
-            appendAllowImplicitCreate(
-                CommandHelpers::filterCommandRequestForPassthrough(copyDbCmdObj), true),
-            ReadPreferenceSetting(ReadPreference::PrimaryOnly),
-            Shard::RetryPolicy::kNoRetry);
-
-        const auto cmdResponse = uassertStatusOK(std::move(response.swResponse));
-        const auto status = getStatusFromCommandResult(cmdResponse.data);
-
-        result.appendElementsUnique(
-            CommandHelpers::filterCommandReplyForPassthrough(cmdResponse.data));
-        return status.isOK();
-    }
-
-} clusterCopyDBCmd;
-
 class ConvertToCappedCmd : public BasicCommand {
 public:
     ConvertToCappedCmd() : BasicCommand("convertToCapped") {}
diff --git a/src/mongo/shell/db.js b/src/mongo/shell/db.js
index 01cd07e89e3..0304410caef 100644
--- a/src/mongo/shell/db.js
+++ b/src/mongo/shell/db.js
@@ -465,7 +465,8 @@ var DB;
     };
 
     /**
-      Clone database on another server to here.
+      Clone database on another server to here. This functionality was removed as of MongoDB 4.2.
+      The shell helper is kept to maintain compatibility with previous versions of MongoDB.
       <p>
       Generally, you should dropDatabase() first as otherwise the cloned information will MERGE
       into whatever data is already present in this database.  (That is however a valid way to use
@@ -481,7 +482,7 @@ var DB;
      */
     DB.prototype.cloneDatabase = function(from) {
         print(
-            "WARNING: db.cloneDatabase is deprecated. See http://dochub.mongodb.org/core/copydb-clone-deprecation");
+            "WARNING: db.cloneDatabase will only function with MongoDB 4.0 and below. See http://dochub.mongodb.org/core/4.2-copydb-clone");
         assert(isString(from) && from.length);
         return this._dbCommand({clone: from});
     };
@@ -512,7 +513,9 @@ var DB;
     };
 
     /**
-      Copy database from one server or name to another server or name.
+      Copy database from one server or name to another server or name. This functionality was
+      removed as of MongoDB 4.2. The shell helper is kept to maintain compatibility with previous
+      versions of MongoDB.
 
       Generally, you should dropDatabase() first as otherwise the copied information will MERGE
       into whatever data is already present in this database (and you will get duplicate objects
@@ -534,7 +537,7 @@ var DB;
     DB.prototype.copyDatabase = function(
         fromdb, todb, fromhost, username, password, mechanism, slaveOk) {
         print(
-            "WARNING: db.copyDatabase is deprecated. See http://dochub.mongodb.org/core/copydb-clone-deprecation");
+            "WARNING: db.copyDatabase will only function with MongoDB 4.0 and below. See http://dochub.mongodb.org/core/4.2-copydb-clone");
         assert(isString(fromdb) && fromdb.length);
         assert(isString(todb) && todb.length);
         fromhost = fromhost || "";
@@ -596,9 +599,10 @@ var DB;
         print(
             "\tdb.aggregate([pipeline], {options}) - performs a collectionless aggregation on this database; returns a cursor");
         print("\tdb.auth(username, password)");
-        print("\tdb.cloneDatabase(fromhost) - deprecated");
+        print("\tdb.cloneDatabase(fromhost) - will only function with MongoDB 4.0 and below");
         print("\tdb.commandHelp(name) returns the help for the command");
-        print("\tdb.copyDatabase(fromdb, todb, fromhost) - deprecated");
+        print(
+            "\tdb.copyDatabase(fromdb, todb, fromhost) - will only function with MongoDB 4.0 and below");
         print("\tdb.createCollection(name, {size: ..., capped: ..., max: ...})");
         print("\tdb.createView(name, viewOn, [{$operator: {...}}, ...], {viewOptions})");
         print("\tdb.createUser(userDocument)");