请问mongdb连接超时是什么原因

[谁予琴乱]

下面是错误详情,关键信息已经处理


Caused by: 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=REPLICA_SET, servers=[{address=111.92.624.235:8888, type=REPLICA_SET_SECONDARY, roundTripTime=0.7 ms, state=CONNECTED}, {address=132.51.923.872:8888, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketOpenException: Exception opening socket}, caused by {java.net.ConnectException: Connection refused}}]
at com.mongodb.connection.BaseCluster.createTimeoutException(BaseCluster.java:377)
at com.mongodb.connection.BaseCluster.selectServer(BaseCluster.java:104)
at com.mongodb.binding.ClusterBinding$ClusterBindingConnectionSource.<init>(ClusterBinding.java:75)
at com.mongodb.binding.ClusterBinding$ClusterBindingConnectionSource.<init>(ClusterBinding.java:71)
at com.mongodb.binding.ClusterBinding.getReadConnectionSource(ClusterBinding.java:63)
at com.mongodb.operation.OperationHelper.withConnection(OperationHelper.java:406)
at com.mongodb.operation.FindOperation.execute(FindOperation.java:510)
at com.mongodb.operation.FindOperation.execute(FindOperation.java:81)
at com.mongodb.Mongo.execute(Mongo.java:836)
at com.mongodb.Mongo$2.execute(Mongo.java:823)
at com.mongodb.DBCursor.initializeCursor(DBCursor.java:870)
at com.mongodb.DBCursor.hasNext(DBCursor.java:142)
at com.mongodb.DBCursor.one(DBCursor.java:679)
at com.mongodb.DBCollection.findOne(DBCollection.java:833)
at com.mongodb.DBCollection.findOne(DBCollection.java:796)
at com.mongodb.DBCollection.findOne(DBCollection.java:743)
at org.springframework.data.mongodb.core.MongoTemplate$FindOneCallback.doInCollection(MongoTemplate.java:2197)
at org.springframework.data.mongodb.core.MongoTemplate$FindOneCallback.doInCollection(MongoTemplate.java:2181)
at org.springframework.data.mongodb.core.MongoTemplate.executeFindOneInternal(MongoTemplate.java:1925)
... 56 more