为什么 MongoDB 连接在 ecs/ec2 上超时，但在本地和 ecs/fargate 上工作正常？

Question

我正在 ecs 上部署 Spring Boot 应用程序。我们想要从 Fargate 迁移到 ec2，但由于某种原因 mongodb 连接超时。它在本地和通过 Fargate 运行，因此我们不确定导致问题的原因。我看到另一篇与此类似的帖子，但这是连接拒绝（text）而不是超时，所以这就是我问这个问题的原因。这是错误：

com.mongodb.MongoSocketOpenException: Exception opening socket
    at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:73) ~[mongodb-driver-core-4.8.2.jar!/:na]
    at com.mongodb.internal.connection.InternalStreamConnection.open(InternalStreamConnection.java:183) ~[mongodb-driver-core-4.8.2.jar!/:na]
    at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.lookupServerDescription(DefaultServerMonitor.java:198) ~[mongodb-driver-core-4.8.2.jar!/:na]
    at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:158) ~[mongodb-driver-core-4.8.2.jar!/:na]
    at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]
Caused by: java.net.SocketTimeoutException: Connect timed out
    at java.base/sun.nio.ch.NioSocketImpl.timedFinishConnect(NioSocketImpl.java:546) ~[na:na]
    at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:597) ~[na:na]
    at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327) ~[na:na]
    at java.base/java.net.Socket.connect(Socket.java:633) ~[na:na]
    at java.base/sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:299) ~[na:na]
    at com.mongodb.internal.connection.SocketStreamHelper.initialize(SocketStreamHelper.java:107) ~[mongodb-driver-core-4.8.2.jar!/:na]
    at com.mongodb.internal.connection.SocketStream.initializeSocket(SocketStream.java:82) ~[mongodb-driver-core-4.8.2.jar!/:na]
    at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:68) ~[mongodb-driver-core-4.8.2.jar!/:na]
    ... 4 common frames omitted

Root Issue:

2024-03-03T22:19:48.746Z  INFO 6 --- [nio-8080-exec-3] org.mongodb.driver.cluster               : No server chosen by com.mongodb.client.internal.MongoClientDelegate$1@66b65db6 from cluster description ClusterDescription{type=REPLICA_SET, connectionMode=MULTIPLE, serverDescriptions=[ServerDescription{address=ac-kgxtec5-shard-00-00.fk3mwfb.mongodb.net:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketOpenException: Exception opening socket}, caused by {java.net.SocketTimeoutException: Connect timed out}}, ServerDescription{address=ac-kgxtec5-shard-00-01.fk3mwfb.mongodb.net:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketOpenException: Exception opening socket}, caused by {java.net.SocketTimeoutException: Connect timed out}}, ServerDescription{address=ac-kgxtec5-shard-00-02.fk3mwfb.mongodb.net:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketOpenException: Exception opening socket}, caused by {java.net.SocketTimeoutException: Connect timed out}}]}. Waiting for 30000 ms 

Answer 1

fargate 部署与 ec2 部署中的安全组和其他网络设置是否相同？也许是 mongoDB 设置，或者如果您使用免费层 ec2 t2micro，则可能会因资源不足而超时。