我遇到了一个生产错误，希望有人能教育我。我在集群（2 dbs + arbiter）中的 AWS 中运行 MongoDB AMI 实例（1000 IOPS）。我连接到数据库的应用服务器位于不同的实例上。
经过数周的正常运行后，我得到了以下异常，它有效地关闭了我的数据库访问，直到我重新启动应用服务器节点。该系统的流量非常低，即服务器绝不会出现故障（个位数的 CPU 利用率）。
以下是我的 mongo 配置选项设置：
auto_connect_retry = false
connections_per_host = 100
threads_multiplier = 50
max_wait_time = 120000
connect_timeout = 10000
socket_timeout = 60000
我需要了解发生了什么，以及下次我是否可以采取任何措施来阻止它。
18:14:15.482 AWECluster-akka.actor.default-dispatcher-3 ERROR akka.actor.OneForOneStrategy - Write operation to server /10.0.8.10:27017 failed on database awe_prod_preview
com.mongodb.MongoException$Network: Write operation to server /10.0.8.10:27017 failed on database awe_prod_preview
at com.mongodb.DBTCPConnector.say(DBTCPConnector.java:153) ~[deps.jar:0.1-SNAPSHOT]
at com.mongodb.DBTCPConnector.say(DBTCPConnector.java:115) ~[deps.jar:0.1-SNAPSHOT]
at com.mongodb.DBApiLayer$MyCollection.update(DBApiLayer.java:327) ~[deps.jar:0.1-SNAPSHOT]
at com.mongodb.DBCollection.update(DBCollection.java:178) ~[deps.jar:0.1-SNAPSHOT]
at com.mongodb.DBCollection.save(DBCollection.java:818) ~[deps.jar:0.1-SNAPSHOT]
at com.mongodb.casbah.MongoCollectionBase$class.save(MongoCollection.scala:573) ~[deps.jar:0.1-SNAPSHOT]
at com.mongodb.casbah.MongoCollection.save(MongoCollection.scala:866) ~[deps.jar:0.1-SNAPSHOT]
at com.novus.salat.dao.SalatDAO.save(SalatDAO.scala:404) ~[deps.jar:0.1-SNAPSHOT]
at com.novus.salat.dao.ModelCompanion$class.save(ModelCompanion.scala:272) ~[deps.jar:0.1-SNAPSHOT]
at awe.etl._ETL$$anonfun$5$$anon$2.save(ETL.scala:75) ~[shock-etl.jar:0.3.22]
at com.novus.salat.dao.BaseDAOMethods$class.save(DAO.scala:127) ~[deps.jar:0.1-SNAPSHOT]
at awe.etl._ETL$$anonfun$5$$anon$2.save(ETL.scala:75) ~[shock-etl.jar:0.3.22]
at awe.etl.step.Publisher.publishNow(Publish.scala:24) ~[shock-etl.jar:0.3.22]
at awe.etl.ETLActor$$anonfun$receive$1$$anonfun$applyOrElse$4$$anonfun$apply$4.apply(ETLActor.scala:116) ~[shock-etl.jar:0.3.22]
at awe.etl.ETLActor$$anonfun$receive$1$$anonfun$applyOrElse$4$$anonfun$apply$4.apply(ETLActor.scala:114) ~[shock-etl.jar:0.3.22]
at scala.Option.fold(Option.scala:157) ~[deps.jar:0.1-SNAPSHOT]
at awe.etl.ETLActor$$anonfun$receive$1$$anonfun$applyOrElse$4.apply(ETLActor.scala:114) ~[shock-etl.jar:0.3.22]
at awe.etl.ETLActor$$anonfun$receive$1$$anonfun$applyOrElse$4.apply(ETLActor.scala:113) ~[shock-etl.jar:0.3.22]
at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33) ~[deps.jar:0.1-SNAPSHOT]
at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:108) ~[deps.jar:0.1-SNAPSHOT]
at awe.etl.ETLActor$$anonfun$receive$1.applyOrElse(ETLActor.scala:113) ~[shock-etl.jar:0.3.22]
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:498) [deps.jar:0.1-SNAPSHOT]
at akka.actor.ActorCell.invoke(ActorCell.scala:456) [deps.jar:0.1-SNAPSHOT]
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:237) [deps.jar:0.1-SNAPSHOT]
at akka.dispatch.Mailbox.run(Mailbox.scala:219) [deps.jar:0.1-SNAPSHOT]
at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:386) [deps.jar:0.1-SNAPSHOT]
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) [deps.jar:0.1-SNAPSHOT]
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) [deps.jar:0.1-SNAPSHOT]
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) [deps.jar:0.1-SNAPSHOT]
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) [deps.jar:0.1-SNAPSHOT]
Caused by: java.net.SocketException: Connection timed out
at java.net.SocketInputStream.socketRead0(Native Method) ~[na:1.6.0_24]
at java.net.SocketInputStream.read(SocketInputStream.java:146) ~[na:1.6.0_24]
at java.io.BufferedInputStream.fill(BufferedInputStream.java:235) ~[na:1.6.0_24]
at java.io.BufferedInputStream.read1(BufferedInputStream.java:275) ~[na:1.6.0_24]
at java.io.BufferedInputStream.read(BufferedInputStream.java:334) ~[na:1.6.0_24]
at org.bson.io.Bits.readFully(Bits.java:46) ~[deps.jar:0.1-SNAPSHOT]
at org.bson.io.Bits.readFully(Bits.java:33) ~[deps.jar:0.1-SNAPSHOT]
at org.bson.io.Bits.readFully(Bits.java:28) ~[deps.jar:0.1-SNAPSHOT]
at com.mongodb.Response.<init>(Response.java:40) ~[deps.jar:0.1-SNAPSHOT]
at com.mongodb.DBPort.go(DBPort.java:142) ~[deps.jar:0.1-SNAPSHOT]
at com.mongodb.DBPort.go(DBPort.java:106) ~[deps.jar:0.1-SNAPSHOT]
at com.mongodb.DBPort.findOne(DBPort.java:162) ~[deps.jar:0.1-SNAPSHOT]
at com.mongodb.DBPort.runCommand(DBPort.java:170) ~[deps.jar:0.1-SNAPSHOT]
at com.mongodb.DBTCPConnector._checkWriteError(DBTCPConnector.java:100) ~[deps.jar:0.1-SNAPSHOT]
at com.mongodb.DBTCPConnector.say(DBTCPConnector.java:142) ~[deps.jar:0.1-SNAPSHOT]
... 29 common frames omitted