我正在尝试将MongoDB作为源代码连接到Kafka服务器，但是当我运行Debezium Mongo源代码连接器时，出现错误。我不明白为什么超时？
[2019-08-22 13:28:58,194] INFO Cluster description not yet available. Waiting for 30000 ms before timing out (org.mongodb.driver.cluster:71)
[2019-08-22 13:28:58,648] INFO Exception in monitor thread while connecting to server morgan-shard-00-00-ayfai.mongodb.net:27017 (org.mongodb.driver.cluster:76)
com.mongodb.MongoSocketReadException: Prematurely reached end of stream
at com.mongodb.internal.connection.SocketStream.read(SocketStream.java:112)
at com.mongodb.internal.connection.InternalStreamConnection.receiveResponseBuffers(InternalStreamConnection.java:554)
at com.mongodb.internal.connection.InternalStreamConnection.receiveMessage(InternalStreamConnection.java:425)
at com.mongodb.internal.connection.InternalStreamConnection.receiveCommandMessageResponse(InternalStreamConnection.java:289)
at com.mongodb.internal.connection.InternalStreamConnection.sendAndReceive(InternalStreamConnection.java:255)
at com.mongodb.internal.connection.CommandHelper.sendAndReceive(CommandHelper.java:83)
at com.mongodb.internal.connection.CommandHelper.executeCommand(CommandHelper.java:33)
at com.mongodb.internal.connection.InternalStreamConnectionInitializer.initializeConnectionDescription(InternalStreamConnectionInitializer.java:106)
at com.mongodb.internal.connection.InternalStreamConnectionInitializer.initialize(InternalStreamConnectionInitializer.java:63)
at com.mongodb.internal.connection.InternalStreamConnection.open(InternalStreamConnection.java:127)
at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:117)
at java.lang.Thread.run(Thread.java:748)
[2019-08-22 13:29:08,196] INFO Created connector mongodb-source-connector (org.apache.kafka.connect.cli.ConnectStandalone:112)
[2019-08-22 13:29:28,195] ERROR Error while reading the 'shards' collection in the 'config' database: Timed out after 30000 ms while waiting to connect. Client view of cluster state is {type=UNKNOWN, servers=[{address=morgan-shard-00-00-ayfai.mongodb.net:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketReadException: Prematurely reached end of stream}}] (io.debezium.connector.mongodb.ReplicaSetDiscovery:80)
com.mongodb.MongoTimeoutException: Timed out after 30000 ms while waiting to connect. Client view of cluster state is {type=UNKNOWN, servers=[{address=morgan-shard-00-00-ayfai.mongodb.net:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketReadException: Prematurely reached end of stream}}]
at com.mongodb.internal.connection.BaseCluster.getDescription(BaseCluster.java:179)
at com.mongodb.internal.connection.SingleServerCluster.getDescription(SingleServerCluster.java:41)
at com.mongodb.client.internal.MongoClientDelegate.getConnectedClusterDescription(MongoClientDelegate.java:136)
at com.mongodb.client.internal.MongoClientDelegate.createClientSession(MongoClientDelegate.java:94)
at com.mongodb.client.internal.MongoClientDelegate$DelegateOperationExecutor.getClientSession(MongoClientDelegate.java:249)
at com.mongodb.client.internal.MongoClientDelegate$DelegateOperationExecutor.execute(MongoClientDelegate.java:172)
at com.mongodb.client.internal.MongoIterableImpl.execute(MongoIterableImpl.java:132)
at com.mongodb.client.internal.MongoIterableImpl.iterator(MongoIterableImpl.java:86)
at com.mongodb.client.internal.MappingIterable.iterator(MappingIterable.java:39)
at io.debezium.connector.mongodb.MongoUtil.contains(MongoUtil.java:183)
at io.debezium.connector.mongodb.MongoUtil.contains(MongoUtil.java:172)
at io.debezium.connector.mongodb.MongoUtil.onDatabase(MongoUtil.java:116)
at io.debezium.connector.mongodb.MongoUtil.onCollection(MongoUtil.java:131)
at io.debezium.connector.mongodb.MongoUtil.onCollectionDocuments(MongoUtil.java:150)
at io.debezium.connector.mongodb.ReplicaSetDiscovery.getReplicaSets(ReplicaSetDiscovery.java:67)
at io.debezium.connector.mongodb.ReplicaSetMonitorThread.run(ReplicaSetMonitorThread.java:65)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
[2019-08-22 13:29:28,195] INFO Cluster description not yet available. Waiting for 30000 ms before timing out (org.mongodb.driver.cluster:71)
[2019-08-22 13:29:58,196] ERROR Error while trying to get information about the replica sets (io.debezium.connector.mongodb.ReplicaSetMonitorThread:87)
com.mongodb.MongoTimeoutException: Timed out after 30000 ms while waiting to connect. Client view of cluster state is {type=UNKNOWN, servers=[{address=morgan-shard-00-00-ayfai.mongodb.net:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketReadException: Prematurely reached end of stream}}]
at com.mongodb.internal.connection.BaseCluster.getDescription(BaseCluster.java:179)
at com.mongodb.internal.connection.SingleServerCluster.getDescription(SingleServerCluster.java:41)
at com.mongodb.Mongo.getClusterDescription(Mongo.java:412)
at com.mongodb.Mongo.getReplicaSetStatus(Mongo.java:455)
at io.debezium.connector.mongodb.ReplicaSetDiscovery.getReplicaSets(ReplicaSetDiscovery.java:85)
at io.debezium.connector.mongodb.ReplicaSetMonitorThread.run(ReplicaSetMonitorThread.java:65)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
如果不查看连接器配置，就不可能知道确切的问题，但根据我对MongoDB Atlas和Debezium的经验，这可能是SSL的问题。
尝试启用 SSL
mongodb.ssl.enabled: true
https://debezium.io/documentation/reference/1.2/connectors/mongodb.html#mongodb-property-mongodb-ssl-enabled