Inleiding
In dit document wordt beschreven hoe u een probleem kunt oplossen als u eindigt met een fout die is gebaseerd op "Time out verbinding" bij CloudCenter Orchestrator (CCO).
Probleem
Nadat u de MongoDB voor CCO hebt ingesteld, zal deze waarschijnlijk falen wanneer de MongoDB niet goed kan aansluiten. Dit probleem kan zich voordoen door vele factoren, maar het genoemde scenario is gericht op de havens die geblokkeerd worden door IPTALES.
Om dit probleem te diagnosticeren, is het altijd raadzaam de logbestanden te bekijken en de oorzaak van de fout te controleren. Hier wordt de fout veroorzaakt door de verbindingsonderbreking.
2017-05-25 17:35:53,340 ERROR context.ContextLoader [localhost-startStop-1] - Context initialization failed
com.mongodb.MongoTimeoutException: Timed out after 30000 ms while waiting for a server that matches ReadPreferenceServerSelector{readPreference=primary}. Client view of cluster state is {type=UNKNOWN, servers=[{address=localhost:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketOpenException: Exception opening socket}, caused by {java.net.ConnectException: Connection refused (Connection refused)}}]
at com.mongodb.connection.BaseCluster.createTimeoutException(BaseCluster.java:369)
at com.mongodb.connection.BaseCluster.selectServer(BaseCluster.java:101)
at com.mongodb.binding.ClusterBinding$ClusterBindingConnectionSource.
(ClusterBinding.java:75)
at com.mongodb.binding.ClusterBinding$ClusterBindingConnectionSource.
(ClusterBinding.java:71)
at com.mongodb.binding.ClusterBinding.getReadConnectionSource(ClusterBinding.java:63)
at com.mongodb.operation.OperationHelper.withConnection(OperationHelper.java:210)
at com.mongodb.operation.FindOperation.execute(FindOperation.java:480)
at com.mongodb.operation.FindOperation.execute(FindOperation.java:77)
at com.mongodb.Mongo.execute(Mongo.java:773)
at com.mongodb.Mongo$2.execute(Mongo.java:760)
at com.mongodb.DBCursor.initializeCursor(DBCursor.java:851)
at com.mongodb.DBCursor.hasNext(DBCursor.java:152)
at com.hazelcast.spring.mongodb.MongoMapStore.loadAllKeys(MongoMapStore.java:142)
at com.hazelcast.spring.mongodb.MongoMapStore.loadAllKeys(MongoMapStore.java:47)
at com.hazelcast.map.impl.MapStoreWrapper.loadAllKeys(MapStoreWrapper.java:119)
at com.hazelcast.map.impl.mapstore.BasicMapStoreContext.loadAllKeys(BasicMapStoreContext.java:179)
at com.hazelcast.map.impl.MapKeyLoader.sendKeysInBatches(MapKeyLoader.java:249)
at com.hazelcast.map.impl.MapKeyLoader.access$200(MapKeyLoader.java:65)
at com.hazelcast.map.impl.MapKeyLoader$1.call(MapKeyLoader.java:152)
at com.hazelcast.map.impl.MapKeyLoader$1.call(MapKeyLoader.java:149)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at com.hazelcast.util.executor.CompletableFutureTask.run(CompletableFutureTask.java:57)
at com.hazelcast.util.executor.CachedExecutorServiceDelegate$Worker.run(CachedExecutorServiceDelegate.java:209)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)
at com.hazelcast.util.executor.HazelcastManagedThread.executeRun(HazelcastManagedThread.java:76)
at com.hazelcast.util.executor.HazelcastManagedThread.run(HazelcastManagedThread.java:92)
Toepassingsversie
| CloudCenter |
4.6.x / 4.7.x / 4.8.0 |
Oplossing
Voeg een uitzondering voor MongoDB in IPTALES toe en voer deze opdracht uit:
# iptables -A INPUT -ptcp --dport 27017 -j ACCEPT
Start vervolgens de MongoDB-service opnieuw en start de service opnieuw:
# /etc/init.d/mongod restart
# /etc/init.d/tomcat restart
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