SERVER-30346 Add startupWarnings for master-slave

4 files changed, 20 insertions, 3 deletions

diff --git a/src/mongo/db/SConscript b/src/mongo/db/SConscript
index e63c3b20742..70151071778 100644
--- a/src/mongo/db/SConscript
+++ b/src/mongo/db/SConscript
@@ -167,6 +167,7 @@ env.Library(
     ],
     LIBDEPS=[
         'startup_warnings_common',
+        '$BUILD_DIR/mongo/db/repl/repl_coordinator_interface',
         '$BUILD_DIR/mongo/util/processinfo',
     ]
 )
diff --git a/src/mongo/db/db.cpp b/src/mongo/db/db.cpp
index 7bef30a8593..d4e86fd2a30 100644
--- a/src/mongo/db/db.cpp
+++ b/src/mongo/db/db.cpp
@@ -590,7 +590,7 @@ ExitCode _initAndListen(int listenPort) {
         }
     }
 
-    logMongodStartupWarnings(storageGlobalParams, serverGlobalParams);
+    logMongodStartupWarnings(storageGlobalParams, serverGlobalParams, globalServiceContext);
 
     {
         stringstream ss;
diff --git a/src/mongo/db/startup_warnings_mongod.cpp b/src/mongo/db/startup_warnings_mongod.cpp
index abfc763739f..4d6b9ab906c 100644
--- a/src/mongo/db/startup_warnings_mongod.cpp
+++ b/src/mongo/db/startup_warnings_mongod.cpp
@@ -38,6 +38,7 @@
 #include <sys/resource.h>
 #endif
 
+#include "mongo/db/repl/replication_coordinator.h"
 #include "mongo/db/server_options.h"
 #include "mongo/db/startup_warnings_common.h"
 #include "mongo/db/storage/storage_options.h"
@@ -136,7 +137,8 @@ StatusWith<std::string> StartupWarningsMongod::readTransparentHugePagesParameter
 }
 
 void logMongodStartupWarnings(const StorageGlobalParams& storageParams,
-                              const ServerGlobalParams& serverParams) {
+                              const ServerGlobalParams& serverParams,
+                              ServiceContext* svcCtx) {
     logCommonStartupWarnings(serverParams);
 
     bool warned = false;
@@ -377,6 +379,18 @@ void logMongodStartupWarnings(const StorageGlobalParams& storageParams,
         warned = true;
     }
 
+    // Check if in master-slave mode
+    auto replCoord = repl::ReplicationCoordinator::get(svcCtx);
+    if (replCoord->getReplicationMode() == repl::ReplicationCoordinator::modeMasterSlave) {
+        log() << startupWarningsLog;
+        log() << "** WARNING: This node was started in master-slave replication mode."
+              << startupWarningsLog;
+        log() << "**          Master-slave replication is deprecated and subject to be removed "
+              << startupWarningsLog;
+        log() << "**          in a future version." << startupWarningsLog;
+        warned = true;
+    }
+
     if (warned) {
         log() << startupWarningsLog;
     }
diff --git a/src/mongo/db/startup_warnings_mongod.h b/src/mongo/db/startup_warnings_mongod.h
index b6f4048237d..eaec23282f6 100644
--- a/src/mongo/db/startup_warnings_mongod.h
+++ b/src/mongo/db/startup_warnings_mongod.h
@@ -28,6 +28,7 @@
 
 #include "mongo/base/status.h"
 #include "mongo/base/status_with.h"
+#include "mongo/db/service_context.h"
 
 namespace mongo {
 
@@ -56,5 +57,6 @@ public:
 // Checks various startup conditions and logs any necessary warnings that
 // are specific to the mongod process.
 void logMongodStartupWarnings(const StorageGlobalParams& storageParams,
-                              const ServerGlobalParams& serverParams);
+                              const ServerGlobalParams& serverParams,
+                              ServiceContext* svcCtx);
 }  // namespace mongo