1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
|
// @file db.cpp : Defines main() for the mongod program.
/**
* Copyright (C) 2008-2014 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/platform/basic.h"
#include <boost/filesystem/operations.hpp>
#include <boost/optional.hpp>
#include <fstream>
#include <iostream>
#include <limits>
#include <signal.h>
#include <string>
#include "mongo/base/checked_cast.h"
#include "mongo/base/init.h"
#include "mongo/base/initializer.h"
#include "mongo/base/status.h"
#include "mongo/config.h"
#include "mongo/db/audit.h"
#include "mongo/db/auth/auth_index_d.h"
#include "mongo/db/auth/authorization_manager.h"
#include "mongo/db/auth/authorization_manager_global.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/catalog/collection_catalog_entry.h"
#include "mongo/db/catalog/database.h"
#include "mongo/db/catalog/database_catalog_entry.h"
#include "mongo/db/catalog/database_holder.h"
#include "mongo/db/catalog/index_catalog.h"
#include "mongo/db/catalog/index_key_validate.h"
#include "mongo/db/client.h"
#include "mongo/db/clientcursor.h"
#include "mongo/db/concurrency/d_concurrency.h"
#include "mongo/db/concurrency/lock_state.h"
#include "mongo/db/concurrency/write_conflict_exception.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/dbdirectclient.h"
#include "mongo/db/dbhelpers.h"
#include "mongo/db/dbmessage.h"
#include "mongo/db/dbwebserver.h"
#include "mongo/db/exec/working_set_common.h"
#include "mongo/db/ftdc/ftdc_mongod.h"
#include "mongo/db/index_names.h"
#include "mongo/db/index_rebuilder.h"
#include "mongo/db/initialize_server_global_state.h"
#include "mongo/db/instance.h"
#include "mongo/db/introspect.h"
#include "mongo/db/json.h"
#include "mongo/db/log_process_details.h"
#include "mongo/db/mongod_options.h"
#include "mongo/db/op_observer.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/query/internal_plans.h"
#include "mongo/db/range_deleter_service.h"
#include "mongo/db/repair_database.h"
#include "mongo/db/repl/oplog.h"
#include "mongo/db/repl/repl_settings.h"
#include "mongo/db/repl/replication_coordinator_external_state_impl.h"
#include "mongo/db/repl/replication_coordinator_global.h"
#include "mongo/db/repl/replication_coordinator_impl.h"
#include "mongo/db/repl/storage_interface_impl.h"
#include "mongo/db/repl/topology_coordinator_impl.h"
#include "mongo/db/restapi.h"
#include "mongo/db/s/sharding_state.h"
#include "mongo/db/s/sharding_state_recovery.h"
#include "mongo/db/server_options.h"
#include "mongo/db/server_parameters.h"
#include "mongo/db/service_context.h"
#include "mongo/db/service_context_d.h"
#include "mongo/db/service_context_d.h"
#include "mongo/db/startup_warnings_mongod.h"
#include "mongo/db/stats/counters.h"
#include "mongo/db/stats/snapshots.h"
#include "mongo/db/storage/mmap_v1/mmap_v1_options.h"
#include "mongo/db/storage/storage_engine.h"
#include "mongo/db/storage/storage_options.h"
#include "mongo/db/storage/wiredtiger/wiredtiger_customization_hooks.h"
#include "mongo/db/ttl.h"
#include "mongo/db/wire_version.h"
#include "mongo/executor/network_interface_factory.h"
#include "mongo/platform/process_id.h"
#include "mongo/scripting/engine.h"
#include "mongo/stdx/memory.h"
#include "mongo/stdx/thread.h"
#include "mongo/util/assert_util.h"
#include "mongo/util/cmdline_utils/censor_cmdline.h"
#include "mongo/util/concurrency/task.h"
#include "mongo/util/concurrency/thread_name.h"
#include "mongo/util/exception_filter_win32.h"
#include "mongo/util/exit.h"
#include "mongo/util/log.h"
#include "mongo/util/net/hostname_canonicalization_worker.h"
#include "mongo/util/net/message_server.h"
#include "mongo/util/net/ssl_manager.h"
#include "mongo/util/ntservice.h"
#include "mongo/util/options_parser/startup_options.h"
#include "mongo/util/quick_exit.h"
#include "mongo/util/ramlog.h"
#include "mongo/util/scopeguard.h"
#include "mongo/util/signal_handlers.h"
#include "mongo/util/stacktrace.h"
#include "mongo/util/startup_test.h"
#include "mongo/util/static_observer.h"
#include "mongo/util/text.h"
#include "mongo/util/time_support.h"
#include "mongo/util/version.h"
#if !defined(_WIN32)
#include <sys/file.h>
#endif
namespace mongo {
using std::unique_ptr;
using std::cout;
using std::cerr;
using std::endl;
using std::list;
using std::string;
using std::stringstream;
using std::vector;
using logger::LogComponent;
void (*snmpInit)() = NULL;
extern int diagLogging;
static const NamespaceString startupLogCollectionName("local.startup_log");
#ifdef _WIN32
ntservice::NtServiceDefaultStrings defaultServiceStrings = {
L"MongoDB", L"MongoDB", L"MongoDB Server"};
#endif
Timer startupSrandTimer;
class MyMessageHandler : public MessageHandler {
public:
virtual void connected(AbstractMessagingPort* p) {
Client::initThread("conn", p);
}
virtual void process(Message& m, AbstractMessagingPort* port) {
while (true) {
if (inShutdown()) {
log() << "got request after shutdown()" << endl;
break;
}
DbResponse dbresponse;
{
auto opCtx = getGlobalServiceContext()->makeOperationContext(&cc());
assembleResponse(opCtx.get(), m, dbresponse, port->remote());
// opCtx must go out of scope here so that the operation cannot show up in currentOp
// results after the response reaches the client
}
if (!dbresponse.response.empty()) {
port->reply(m, dbresponse.response, dbresponse.responseToMsgId);
if (dbresponse.exhaustNS.size() > 0) {
MsgData::View header = dbresponse.response.header();
QueryResult::View qr = header.view2ptr();
long long cursorid = qr.getCursorId();
if (cursorid) {
verify(dbresponse.exhaustNS.size() && dbresponse.exhaustNS[0]);
string ns = dbresponse.exhaustNS; // before reset() free's it...
m.reset();
BufBuilder b(512);
b.appendNum((int)0 /*size set later in appendData()*/);
b.appendNum(header.getId());
b.appendNum(header.getResponseToMsgId());
b.appendNum((int)dbGetMore);
b.appendNum((int)0);
b.appendStr(ns);
b.appendNum((int)0); // ntoreturn
b.appendNum(cursorid);
m.appendData(b.buf(), b.len());
b.decouple();
DEV log() << "exhaust=true sending more";
continue; // this goes back to top loop
}
}
}
break;
}
}
virtual void close() {
Client::destroy();
}
};
static void logStartup(OperationContext* txn) {
BSONObjBuilder toLog;
stringstream id;
id << getHostNameCached() << "-" << jsTime().asInt64();
toLog.append("_id", id.str());
toLog.append("hostname", getHostNameCached());
toLog.appendTimeT("startTime", time(0));
toLog.append("startTimeLocal", dateToCtimeString(Date_t::now()));
toLog.append("cmdLine", serverGlobalParams.parsedOpts);
toLog.append("pid", ProcessId::getCurrent().asLongLong());
BSONObjBuilder buildinfo(toLog.subobjStart("buildinfo"));
appendBuildInfo(buildinfo);
appendStorageEngineList(&buildinfo);
buildinfo.doneFast();
BSONObj o = toLog.obj();
ScopedTransaction transaction(txn, MODE_X);
Lock::GlobalWrite lk(txn->lockState());
AutoGetOrCreateDb autoDb(txn, startupLogCollectionName.db(), mongo::MODE_X);
Database* db = autoDb.getDb();
Collection* collection = db->getCollection(startupLogCollectionName);
WriteUnitOfWork wunit(txn);
if (!collection) {
BSONObj options = BSON("capped" << true << "size" << 10 * 1024 * 1024);
bool shouldReplicateWrites = txn->writesAreReplicated();
txn->setReplicatedWrites(false);
ON_BLOCK_EXIT(&OperationContext::setReplicatedWrites, txn, shouldReplicateWrites);
uassertStatusOK(userCreateNS(txn, db, startupLogCollectionName.ns(), options));
collection = db->getCollection(startupLogCollectionName);
}
invariant(collection);
OpDebug* const nullOpDebug = nullptr;
uassertStatusOK(collection->insertDocument(txn, o, nullOpDebug, false));
wunit.commit();
}
static void checkForIdIndexes(OperationContext* txn, Database* db) {
if (db->name() == "local") {
// we do not need an _id index on anything in the local database
return;
}
list<string> collections;
db->getDatabaseCatalogEntry()->getCollectionNamespaces(&collections);
// for each collection, ensure there is a $_id_ index
for (list<string>::iterator i = collections.begin(); i != collections.end(); ++i) {
const string& collectionName = *i;
NamespaceString ns(collectionName);
if (ns.isSystem())
continue;
Collection* coll = db->getCollection(collectionName);
if (!coll)
continue;
if (coll->getIndexCatalog()->findIdIndex(txn))
continue;
log() << "WARNING: the collection '" << *i << "' lacks a unique index on _id."
<< " This index is needed for replication to function properly" << startupWarningsLog;
log() << "\t To fix this, you need to create a unique index on _id."
<< " See http://dochub.mongodb.org/core/build-replica-set-indexes"
<< startupWarningsLog;
}
}
/**
* Checks if this server was started without --replset but has a config in local.system.replset
* (meaning that this is probably a replica set member started in stand-alone mode).
*
* @returns the number of documents in local.system.replset or 0 if this was started with
* --replset.
*/
static unsigned long long checkIfReplMissingFromCommandLine(OperationContext* txn) {
// This is helpful for the query below to work as you can't open files when readlocked
ScopedTransaction transaction(txn, MODE_X);
Lock::GlobalWrite lk(txn->lockState());
if (!repl::getGlobalReplicationCoordinator()->getSettings().usingReplSets()) {
DBDirectClient c(txn);
return c.count("local.system.replset");
}
return 0;
}
/**
* Due to SERVER-23274, versions 3.2.0 through 3.2.4 of MongoDB incorrectly mark the final output
* collections of aggregations with $out stages as temporary on most replica set secondaries. Rather
* than risk deleting collections that the user did not intend to be temporary when newer nodes
* start up or get promoted to be replica set primaries, newer nodes clear the temp flags left by
* these versions.
*/
static bool isSubjectToSERVER23299(OperationContext* txn) {
dbHolder().openDb(txn, startupLogCollectionName.db());
AutoGetCollectionForRead autoColl(txn, startupLogCollectionName);
// No startup log or an empty one means either that the user was not running an affected
// version, or that they manually deleted the startup collection since they last started an
// affected version.
LOG(1) << "Checking node for SERVER-23299 eligibility";
if (!autoColl.getCollection()) {
LOG(1) << "Didn't find " << startupLogCollectionName;
return false;
}
LOG(1) << "Checking node for SERVER-23299 applicability - reading startup log";
BSONObj lastStartupLogDoc;
if (!Helpers::getLast(txn, startupLogCollectionName.ns().c_str(), lastStartupLogDoc)) {
return false;
}
std::vector<int> versionComponents;
try {
for (auto elem : lastStartupLogDoc["buildinfo"]["versionArray"].Obj()) {
versionComponents.push_back(elem.Int());
}
uassert(40050,
str::stream() << "Expected three elements in buildinfo.versionArray; found "
<< versionComponents.size(),
versionComponents.size() >= 3);
} catch (const DBException& ex) {
log() << "Last entry of " << startupLogCollectionName
<< " has no well-formed buildinfo.versionArray field; ignoring " << causedBy(ex);
return false;
}
LOG(1)
<< "Checking node for SERVER-23299 applicability - checking version 3.2.x for x in [0, 4]";
if (versionComponents[0] != 3)
return false;
if (versionComponents[1] != 2)
return false;
if (versionComponents[2] > 4)
return false;
LOG(1) << "Node eligible for SERVER-23299";
return true;
}
static void handleSERVER23299ForDb(OperationContext* txn, Database* db) {
log() << "Scanning " << db->name() << " db for SERVER-23299 eligibility";
const auto dbEntry = db->getDatabaseCatalogEntry();
list<string> collNames;
dbEntry->getCollectionNamespaces(&collNames);
for (const auto& collName : collNames) {
const auto collEntry = dbEntry->getCollectionCatalogEntry(collName);
const auto collOptions = collEntry->getCollectionOptions(txn);
if (!collOptions.temp)
continue;
log() << "Marking collection " << collName << " as permanent per SERVER-23299";
MONGO_WRITE_CONFLICT_RETRY_LOOP_BEGIN {
WriteUnitOfWork wuow(txn);
collEntry->clearTempFlag(txn);
wuow.commit();
}
MONGO_WRITE_CONFLICT_RETRY_LOOP_END(txn, "repair SERVER-23299", collEntry->ns().ns());
}
log() << "Done scanning " << db->name() << " for SERVER-23299 eligibility";
}
static void repairDatabasesAndCheckVersion(OperationContext* txn) {
LOG(1) << "enter repairDatabases (to check pdfile version #)" << endl;
ScopedTransaction transaction(txn, MODE_X);
Lock::GlobalWrite lk(txn->lockState());
vector<string> dbNames;
StorageEngine* storageEngine = txn->getServiceContext()->getGlobalStorageEngine();
storageEngine->listDatabases(&dbNames);
// Repair all databases first, so that we do not try to open them if they are in bad shape
if (storageGlobalParams.repair) {
invariant(!storageGlobalParams.readOnly);
for (vector<string>::const_iterator i = dbNames.begin(); i != dbNames.end(); ++i) {
const string dbName = *i;
LOG(1) << " Repairing database: " << dbName << endl;
fassert(18506, repairDatabase(txn, storageEngine, dbName));
}
}
const repl::ReplSettings& replSettings = repl::getGlobalReplicationCoordinator()->getSettings();
// On replica set members we only clear temp collections on DBs other than "local" during
// promotion to primary. On pure slaves, they are only cleared when the oplog tells them
// to. The local DB is special because it is not replicated. See SERVER-10927 for more
// details.
const bool shouldClearNonLocalTmpCollections =
!(checkIfReplMissingFromCommandLine(txn) || replSettings.usingReplSets() ||
replSettings.isSlave());
const bool shouldDoCleanupForSERVER23299 = isSubjectToSERVER23299(txn);
for (vector<string>::const_iterator i = dbNames.begin(); i != dbNames.end(); ++i) {
const string dbName = *i;
LOG(1) << " Recovering database: " << dbName << endl;
Database* db = dbHolder().openDb(txn, dbName);
invariant(db);
// First thing after opening the database is to check for file compatibility,
// otherwise we might crash if this is a deprecated format.
if (!db->getDatabaseCatalogEntry()->currentFilesCompatible(txn)) {
log() << "****";
log() << "cannot do this upgrade without an upgrade in the middle";
log() << "please do a --repair with 2.6 and then start this version";
quickExit(EXIT_NEED_UPGRADE);
return;
}
// Major versions match, check indexes
const string systemIndexes = db->name() + ".system.indexes";
Collection* coll = db->getCollection(systemIndexes);
unique_ptr<PlanExecutor> exec(
InternalPlanner::collectionScan(txn, systemIndexes, coll, PlanExecutor::YIELD_MANUAL));
BSONObj index;
PlanExecutor::ExecState state;
while (PlanExecutor::ADVANCED == (state = exec->getNext(&index, NULL))) {
const BSONObj key = index.getObjectField("key");
const string plugin = IndexNames::findPluginName(key);
if (db->getDatabaseCatalogEntry()->isOlderThan24(txn)) {
if (IndexNames::existedBefore24(plugin)) {
continue;
}
log() << "Index " << index << " claims to be of type '" << plugin << "', "
<< "which is either invalid or did not exist before v2.4. "
<< "See the upgrade section: "
<< "http://dochub.mongodb.org/core/upgrade-2.4" << startupWarningsLog;
}
const Status keyStatus = validateKeyPattern(key);
if (!keyStatus.isOK()) {
log() << "Problem with index " << index << ": " << keyStatus.reason()
<< " This index can still be used however it cannot be rebuilt."
<< " For more info see"
<< " http://dochub.mongodb.org/core/index-validation" << startupWarningsLog;
}
if (index["v"].isNumber() && index["v"].numberInt() == 0) {
log() << "WARNING: The index: " << index << " was created with the deprecated"
<< " v:0 format. This format will not be supported in a future release."
<< startupWarningsLog;
log() << "\t To fix this, you need to rebuild this index."
<< " For instructions, see http://dochub.mongodb.org/core/rebuild-v0-indexes"
<< startupWarningsLog;
}
}
// Non-yielding collection scans from InternalPlanner will never error.
invariant(PlanExecutor::IS_EOF == state);
if (replSettings.usingReplSets()) {
// We only care about the _id index if we are in a replset
checkForIdIndexes(txn, db);
}
if (shouldDoCleanupForSERVER23299) {
handleSERVER23299ForDb(txn, db);
}
if (shouldClearNonLocalTmpCollections || dbName == "local") {
db->clearTmpCollections(txn);
}
}
LOG(1) << "done repairDatabases" << endl;
}
static void _initWireSpec() {
WireSpec& spec = WireSpec::instance();
// accept from any version
spec.minWireVersionIncoming = RELEASE_2_4_AND_BEFORE;
spec.maxWireVersionIncoming = FIND_COMMAND;
// connect to any version
spec.minWireVersionOutgoing = RELEASE_2_4_AND_BEFORE;
spec.maxWireVersionOutgoing = FIND_COMMAND;
}
static void _initAndListen(int listenPort) {
Client::initThread("initandlisten");
_initWireSpec();
getGlobalServiceContext()->setOpObserver(stdx::make_unique<OpObserver>());
const repl::ReplSettings& replSettings = repl::getGlobalReplicationCoordinator()->getSettings();
{
ProcessId pid = ProcessId::getCurrent();
LogstreamBuilder l = log(LogComponent::kControl);
l << "MongoDB starting : pid=" << pid << " port=" << serverGlobalParams.port
<< " dbpath=" << storageGlobalParams.dbpath;
if (replSettings.isMaster())
l << " master=" << replSettings.isMaster();
if (replSettings.isSlave())
l << " slave=" << (int)replSettings.isSlave();
const bool is32bit = sizeof(int*) == 4;
l << (is32bit ? " 32" : " 64") << "-bit host=" << getHostNameCached() << endl;
}
DEV log(LogComponent::kControl) << "DEBUG build (which is slower)" << endl;
#if defined(_WIN32)
printTargetMinOS();
#endif
logProcessDetails();
checked_cast<ServiceContextMongoD*>(getGlobalServiceContext())->createLockFile();
// Due to SERVER-15389, we must setupSockets first thing at startup in order to avoid
// obtaining too high a file descriptor for our calls to select().
MessageServer::Options options;
options.port = listenPort;
options.ipList = serverGlobalParams.bind_ip;
auto handler = std::make_shared<MyMessageHandler>();
MessageServer* server = createServer(options, std::move(handler));
server->setAsTimeTracker();
// This is what actually creates the sockets, but does not yet listen on them because we
// do not want connections to just hang if recovery takes a very long time.
if (!server->setupSockets()) {
error() << "Failed to set up sockets during startup.";
return;
}
std::shared_ptr<DbWebServer> dbWebServer;
if (serverGlobalParams.isHttpInterfaceEnabled) {
dbWebServer.reset(new DbWebServer(
serverGlobalParams.bind_ip, serverGlobalParams.port + 1000, new RestAdminAccess()));
if (!dbWebServer->setupSockets()) {
error() << "Failed to set up sockets for HTTP interface during startup.";
return;
}
}
getGlobalServiceContext()->initializeGlobalStorageEngine();
#ifdef MONGO_CONFIG_WIREDTIGER_ENABLED
if (WiredTigerCustomizationHooks::get(getGlobalServiceContext())->restartRequired()) {
exitCleanly(EXIT_CLEAN);
}
#endif
// Warn if we detect configurations for multiple registered storage engines in
// the same configuration file/environment.
if (serverGlobalParams.parsedOpts.hasField("storage")) {
BSONElement storageElement = serverGlobalParams.parsedOpts.getField("storage");
invariant(storageElement.isABSONObj());
BSONObj storageParamsObj = storageElement.Obj();
BSONObjIterator i = storageParamsObj.begin();
while (i.more()) {
BSONElement e = i.next();
// Ignore if field name under "storage" matches current storage engine.
if (storageGlobalParams.engine == e.fieldName()) {
continue;
}
// Warn if field name matches non-active registered storage engine.
if (getGlobalServiceContext()->isRegisteredStorageEngine(e.fieldName())) {
warning() << "Detected configuration for non-active storage engine "
<< e.fieldName() << " when current storage engine is "
<< storageGlobalParams.engine;
}
}
}
if (!getGlobalServiceContext()->getGlobalStorageEngine()->getSnapshotManager()) {
if (moe::startupOptionsParsed.count("replication.enableMajorityReadConcern") &&
moe::startupOptionsParsed["replication.enableMajorityReadConcern"].as<bool>()) {
// Note: we are intentionally only erroring if the user explicitly requested that we
// enable majority read concern. We do not error if the they are implicitly enabled for
// CSRS because a required step in the upgrade procedure can involve an mmapv1 node in
// the CSRS in the REMOVED state. This is handled by the TopologyCoordinator.
invariant(replSettings.isMajorityReadConcernEnabled());
severe() << "Majority read concern requires a storage engine that supports"
<< " snapshots, such as wiredTiger. " << storageGlobalParams.engine
<< " does not support snapshots.";
exitCleanly(EXIT_BADOPTIONS);
}
}
logMongodStartupWarnings(storageGlobalParams, serverGlobalParams);
{
stringstream ss;
ss << endl;
ss << "*********************************************************************" << endl;
ss << " ERROR: dbpath (" << storageGlobalParams.dbpath << ") does not exist." << endl;
ss << " Create this directory or give existing directory in --dbpath." << endl;
ss << " See http://dochub.mongodb.org/core/startingandstoppingmongo" << endl;
ss << "*********************************************************************" << endl;
uassert(10296, ss.str().c_str(), boost::filesystem::exists(storageGlobalParams.dbpath));
}
{
stringstream ss;
ss << "repairpath (" << storageGlobalParams.repairpath << ") does not exist";
uassert(12590, ss.str().c_str(), boost::filesystem::exists(storageGlobalParams.repairpath));
}
// TODO: This should go into a MONGO_INITIALIZER once we have figured out the correct
// dependencies.
if (snmpInit) {
snmpInit();
}
if (!storageGlobalParams.readOnly) {
boost::filesystem::remove_all(storageGlobalParams.dbpath + "/_tmp/");
}
if (mmapv1GlobalOptions.journalOptions & MMAPV1Options::JournalRecoverOnly)
return;
if (mongodGlobalParams.scriptingEnabled) {
ScriptEngine::setup();
}
auto startupOpCtx = getGlobalServiceContext()->makeOperationContext(&cc());
repairDatabasesAndCheckVersion(startupOpCtx.get());
if (storageGlobalParams.upgrade) {
log() << "finished checking dbs" << endl;
exitCleanly(EXIT_CLEAN);
}
uassertStatusOK(getGlobalAuthorizationManager()->initialize(startupOpCtx.get()));
/* this is for security on certain platforms (nonce generation) */
srand((unsigned)(curTimeMicros64() ^ startupSrandTimer.micros()));
// The snapshot thread provides historical collection level and lock statistics for use
// by the web interface. Only needed when HTTP is enabled.
if (serverGlobalParams.isHttpInterfaceEnabled) {
statsSnapshotThread.go();
invariant(dbWebServer);
stdx::thread web(stdx::bind(&webServerListenThread, dbWebServer));
web.detach();
}
{
#ifndef _WIN32
mongo::signalForkSuccess();
#endif
Status status = authindex::verifySystemIndexes(startupOpCtx.get());
if (!status.isOK()) {
log() << status.reason();
exitCleanly(EXIT_NEED_UPGRADE);
}
// SERVER-14090: Verify that auth schema version is schemaVersion26Final.
int foundSchemaVersion;
status = getGlobalAuthorizationManager()->getAuthorizationVersion(startupOpCtx.get(),
&foundSchemaVersion);
if (!status.isOK()) {
log() << "Auth schema version is incompatible: "
<< "User and role management commands require auth data to have "
<< "at least schema version " << AuthorizationManager::schemaVersion26Final
<< " but startup could not verify schema version: " << status.toString() << endl;
exitCleanly(EXIT_NEED_UPGRADE);
}
if (foundSchemaVersion < AuthorizationManager::schemaVersion26Final) {
log() << "Auth schema version is incompatible: "
<< "User and role management commands require auth data to have "
<< "at least schema version " << AuthorizationManager::schemaVersion26Final
<< " but found " << foundSchemaVersion << ". In order to upgrade "
<< "the auth schema, first downgrade MongoDB binaries to version "
<< "2.6 and then run the authSchemaUpgrade command." << endl;
exitCleanly(EXIT_NEED_UPGRADE);
}
if (!storageGlobalParams.readOnly) {
getDeleter()->startWorkers();
restartInProgressIndexesFromLastShutdown(startupOpCtx.get());
repl::getGlobalReplicationCoordinator()->startup(startupOpCtx.get());
const unsigned long long missingRepl =
checkIfReplMissingFromCommandLine(startupOpCtx.get());
if (missingRepl) {
log() << startupWarningsLog;
log() << "** WARNING: mongod started without --replSet yet " << missingRepl
<< " documents are present in local.system.replset" << startupWarningsLog;
log() << "** Restart with --replSet unless you are doing maintenance and "
<< " no other clients are connected." << startupWarningsLog;
log() << "** The TTL collection monitor will not start because of this."
<< startupWarningsLog;
log() << "** ";
log() << " For more info see http://dochub.mongodb.org/core/ttlcollections";
log() << startupWarningsLog;
} else {
startTTLBackgroundJob();
}
}
}
startClientCursorMonitor();
PeriodicTask::startRunningPeriodicTasks();
HostnameCanonicalizationWorker::start(getGlobalServiceContext());
if (!storageGlobalParams.readOnly) {
startFTDC();
if (!repl::getGlobalReplicationCoordinator()->isReplEnabled()) {
uassertStatusOK(ShardingState::get(startupOpCtx.get())
->initializeFromShardIdentity(startupOpCtx.get()));
uassertStatusOK(ShardingStateRecovery::recover(startupOpCtx.get()));
}
logStartup(startupOpCtx.get());
}
// MessageServer::run will return when exit code closes its socket and we don't need the
// operation context anymore
startupOpCtx.reset();
server->run();
}
ExitCode initAndListen(int listenPort) {
try {
_initAndListen(listenPort);
return inShutdown() ? EXIT_CLEAN : EXIT_NET_ERROR;
} catch (DBException& e) {
log() << "exception in initAndListen: " << e.toString() << ", terminating" << endl;
return EXIT_UNCAUGHT;
} catch (std::exception& e) {
log() << "exception in initAndListen std::exception: " << e.what() << ", terminating";
return EXIT_UNCAUGHT;
} catch (int& n) {
log() << "exception in initAndListen int: " << n << ", terminating" << endl;
return EXIT_UNCAUGHT;
} catch (...) {
log() << "exception in initAndListen, terminating" << endl;
return EXIT_UNCAUGHT;
}
}
#if defined(_WIN32)
ExitCode initService() {
ntservice::reportStatus(SERVICE_RUNNING);
log() << "Service running" << endl;
return initAndListen(serverGlobalParams.port);
}
#endif
} // namespace mongo
using namespace mongo;
static int mongoDbMain(int argc, char* argv[], char** envp);
#if defined(_WIN32)
// In Windows, wmain() is an alternate entry point for main(), and receives the same parameters
// as main() but encoded in Windows Unicode (UTF-16); "wide" 16-bit wchar_t characters. The
// WindowsCommandLine object converts these wide character strings to a UTF-8 coded equivalent
// and makes them available through the argv() and envp() members. This enables mongoDbMain()
// to process UTF-8 encoded arguments and environment variables without regard to platform.
int wmain(int argc, wchar_t* argvW[], wchar_t* envpW[]) {
WindowsCommandLine wcl(argc, argvW, envpW);
int exitCode = mongoDbMain(argc, wcl.argv(), wcl.envp());
quickExit(exitCode);
}
#else
int main(int argc, char* argv[], char** envp) {
int exitCode = mongoDbMain(argc, argv, envp);
quickExit(exitCode);
}
#endif
MONGO_INITIALIZER_GENERAL(ForkServer,
("EndStartupOptionHandling"),
("default"))(InitializerContext* context) {
mongo::forkServerOrDie();
return Status::OK();
}
/*
* This function should contain the startup "actions" that we take based on the startup config. It
* is intended to separate the actions from "storage" and "validation" of our startup configuration.
*/
static void startupConfigActions(const std::vector<std::string>& args) {
// The "command" option is deprecated. For backward compatibility, still support the "run"
// and "dbppath" command. The "run" command is the same as just running mongod, so just
// falls through.
if (moe::startupOptionsParsed.count("command")) {
vector<string> command = moe::startupOptionsParsed["command"].as<vector<string>>();
if (command[0].compare("dbpath") == 0) {
cout << storageGlobalParams.dbpath << endl;
quickExit(EXIT_SUCCESS);
}
if (command[0].compare("run") != 0) {
cout << "Invalid command: " << command[0] << endl;
printMongodHelp(moe::startupOptions);
quickExit(EXIT_FAILURE);
}
if (command.size() > 1) {
cout << "Too many parameters to 'run' command" << endl;
printMongodHelp(moe::startupOptions);
quickExit(EXIT_FAILURE);
}
}
#ifdef _WIN32
ntservice::configureService(initService,
moe::startupOptionsParsed,
defaultServiceStrings,
std::vector<std::string>(),
args);
#endif // _WIN32
#ifdef __linux__
if (moe::startupOptionsParsed.count("shutdown") &&
moe::startupOptionsParsed["shutdown"].as<bool>() == true) {
bool failed = false;
string name =
(boost::filesystem::path(storageGlobalParams.dbpath) / "mongod.lock").string();
if (!boost::filesystem::exists(name) || boost::filesystem::file_size(name) == 0)
failed = true;
pid_t pid;
string procPath;
if (!failed) {
try {
std::ifstream f(name.c_str());
f >> pid;
procPath = (str::stream() << "/proc/" << pid);
if (!boost::filesystem::exists(procPath))
failed = true;
} catch (const std::exception& e) {
cerr << "Error reading pid from lock file [" << name << "]: " << e.what() << endl;
failed = true;
}
}
if (failed) {
std::cerr << "There doesn't seem to be a server running with dbpath: "
<< storageGlobalParams.dbpath << std::endl;
quickExit(EXIT_FAILURE);
}
cout << "killing process with pid: " << pid << endl;
int ret = kill(pid, SIGTERM);
if (ret) {
int e = errno;
cerr << "failed to kill process: " << errnoWithDescription(e) << endl;
quickExit(EXIT_FAILURE);
}
while (boost::filesystem::exists(procPath)) {
sleepsecs(1);
}
quickExit(EXIT_SUCCESS);
}
#endif
}
MONGO_INITIALIZER_WITH_PREREQUISITES(CreateReplicationManager,
("SetGlobalEnvironment", "SSLManager"))
(InitializerContext* context) {
repl::TopologyCoordinatorImpl::Options topoCoordOptions;
topoCoordOptions.maxSyncSourceLagSecs = Seconds(repl::maxSyncSourceLagSecs);
topoCoordOptions.configServerMode = serverGlobalParams.configsvrMode;
auto replCoord = stdx::make_unique<repl::ReplicationCoordinatorImpl>(
getGlobalReplSettings(),
new repl::ReplicationCoordinatorExternalStateImpl,
executor::makeNetworkInterface("NetworkInterfaceASIO-Replication").release(),
new repl::TopologyCoordinatorImpl(topoCoordOptions),
static_cast<int64_t>(curTimeMillis64()));
auto serviceContext = getGlobalServiceContext();
serviceContext->registerKillOpListener(replCoord.get());
repl::ReplicationCoordinator::set(serviceContext, std::move(replCoord));
repl::StorageInterface::set(serviceContext, stdx::make_unique<repl::StorageInterfaceImpl>());
repl::setOplogCollectionName();
return Status::OK();
}
#ifdef MONGO_CONFIG_SSL
MONGO_INITIALIZER_GENERAL(setSSLManagerType,
MONGO_NO_PREREQUISITES,
("SSLManager"))(InitializerContext* context) {
isSSLServer = true;
return Status::OK();
}
#endif
#if defined(_WIN32)
namespace mongo {
// the hook for mongoAbort
extern void (*reportEventToSystem)(const char* msg);
static void reportEventToSystemImpl(const char* msg) {
static ::HANDLE hEventLog = RegisterEventSource(NULL, TEXT("mongod"));
if (hEventLog) {
std::wstring s = toNativeString(msg);
LPCTSTR txt = s.c_str();
BOOL ok = ReportEvent(hEventLog, EVENTLOG_ERROR_TYPE, 0, 0, NULL, 1, 0, &txt, 0);
wassert(ok);
}
}
} // namespace mongo
#endif // if defined(_WIN32)
static void shutdownServer() {
log(LogComponent::kNetwork) << "shutdown: going to close listening sockets..." << endl;
ListeningSockets::get()->closeAll();
log(LogComponent::kNetwork) << "shutdown: going to flush diaglog..." << endl;
_diaglog.flush();
// We drop the scope cache because leak sanitizer can't see across the
// thread we use for proxying MozJS requests. Dropping the cache cleans up
// the memory and makes leak sanitizer happy.
ScriptEngine::dropScopeCache();
getGlobalServiceContext()->shutdownGlobalStorageEngineCleanly();
}
// NOTE: This function may be called at any time after
// registerShutdownTask is called below. It must not depend on the
// prior execution of mongo initializers or the existence of threads.
static void shutdownTask() {
// Global storage engine may not be started in all cases before we exit
if (getGlobalServiceContext()->getGlobalStorageEngine() == NULL) {
return;
}
// Shutdown Full-Time Data Capture
stopFTDC();
getGlobalServiceContext()->setKillAllOperations();
repl::getGlobalReplicationCoordinator()->shutdown();
Client& client = cc();
ServiceContext::UniqueOperationContext uniqueTxn;
OperationContext* txn = client.getOperationContext();
if (!txn) {
uniqueTxn = client.makeOperationContext();
txn = uniqueTxn.get();
}
ShardingState::get(txn)->shutDown(txn);
// We should always be able to acquire the global lock at shutdown.
//
// TODO: This call chain uses the locker directly, because we do not want to start an
// operation context, which also instantiates a recovery unit. Also, using the
// lockGlobalBegin/lockGlobalComplete sequence, we avoid taking the flush lock. This will
// all go away if we start acquiring the global/flush lock as part of ScopedTransaction.
//
// For a Windows service, dbexit does not call exit(), so we must leak the lock outside
// of this function to prevent any operations from running that need a lock.
//
DefaultLockerImpl* globalLocker = new DefaultLockerImpl();
LockResult result = globalLocker->lockGlobalBegin(MODE_X);
if (result == LOCK_WAITING) {
result = globalLocker->lockGlobalComplete(UINT_MAX);
}
invariant(LOCK_OK == result);
log(LogComponent::kControl) << "now exiting" << endl;
// Execute the graceful shutdown tasks, such as flushing the outstanding journal
// and data files, close sockets, etc.
try {
shutdownServer();
} catch (const DBException& ex) {
severe() << "shutdown failed with DBException " << ex;
std::terminate();
} catch (const std::exception& ex) {
severe() << "shutdown failed with std::exception: " << ex.what();
std::terminate();
} catch (...) {
severe() << "shutdown failed with exception";
std::terminate();
}
audit::logShutdown(&cc());
}
static int mongoDbMain(int argc, char* argv[], char** envp) {
static StaticObserver staticObserver;
registerShutdownTask(shutdownTask);
#if defined(_WIN32)
mongo::reportEventToSystem = &mongo::reportEventToSystemImpl;
#endif
setupSignalHandlers();
dbExecCommand = argv[0];
srand(static_cast<unsigned>(curTimeMicros64()));
Status status = mongo::runGlobalInitializers(argc, argv, envp);
if (!status.isOK()) {
severe(LogComponent::kControl) << "Failed global initialization: " << status;
quickExit(EXIT_FAILURE);
}
startupConfigActions(std::vector<std::string>(argv, argv + argc));
cmdline_utils::censorArgvArray(argc, argv);
if (!initializeServerGlobalState())
quickExit(EXIT_FAILURE);
// Per SERVER-7434, startSignalProcessingThread() must run after any forks
// (initializeServerGlobalState()) and before creation of any other threads.
startSignalProcessingThread();
#if defined(_WIN32)
if (ntservice::shouldStartService()) {
ntservice::startService();
// exits directly and so never reaches here either.
}
#endif
StartupTest::runTests();
ExitCode exitCode = initAndListen(serverGlobalParams.port);
exitCleanly(exitCode);
return 0;
}
|