java - MongoDB atlas，连接不工作

Question

我刚刚创建了一个免费的 MongoDB atlas 集群实例。但不知何故，我无法从我的应用程序以及 MongoDB Compas 连接它。

当我尝试运行我的应用程序时，出现以下错误。

Caused by: com.mongodb.MongoTimeoutException: Timed out after 30000 ms while waiting for a server that matches WritableServerSelector. Client view of cluster state is {type=UNKNOWN, servers=[{address=experimental-1-epdri.mongodb.net:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketException: experimental-1-epdri.mongodb.net}, caused by {java.net.UnknownHostException: experimental-1-epdri.mongodb.net}}]
    at com.mongodb.connection.BaseCluster.createTimeoutException(BaseCluster.java:377) ~[mongodb-driver-core-3.4.2.jar:na]
    at com.mongodb.connection.BaseCluster.selectServer(BaseCluster.java:104) ~[mongodb-driver-core-3.4.2.jar:na]
    at com.mongodb.binding.ClusterBinding$ClusterBindingConnectionSource.<init>(ClusterBinding.java:75) ~[mongodb-driver-core-3.4.2.jar:na]
    at com.mongodb.binding.ClusterBinding$ClusterBindingConnectionSource.<init>(ClusterBinding.java:71) ~[mongodb-driver-core-3.4.2.jar:na]
    at com.mongodb.binding.ClusterBinding.getWriteConnectionSource(ClusterBinding.java:68) ~[mongodb-driver-core-3.4.2.jar:na]
    at com.mongodb.operation.OperationHelper.withConnection(OperationHelper.java:411) ~[mongodb-driver-core-3.4.2.jar:na]
    at com.mongodb.operation.CreateIndexesOperation.execute(CreateIndexesOperation.java:144) ~[mongodb-driver-core-3.4.2.jar:na]
    at com.mongodb.operation.CreateIndexesOperation.execute(CreateIndexesOperation.java:71) ~[mongodb-driver-core-3.4.2.jar:na]
    at com.mongodb.Mongo.execute(Mongo.java:845) ~[mongodb-driver-3.4.2.jar:na]
    at com.mongodb.Mongo$2.execute(Mongo.java:828) ~[mongodb-driver-3.4.2.jar:na]
    at com.mongodb.MongoCollectionImpl.createIndexes(MongoCollectionImpl.java:491) ~[mongodb-driver-3.4.2.jar:na]
    at com.mongodb.MongoCollectionImpl.createIndex(MongoCollectionImpl.java:458) ~[mongodb-driver-3.4.2.jar:na]
    at org.axonframework.mongo.eventsourcing.eventstore.AbstractMongoEventStorageStrategy.ensureIndexes(AbstractMongoEventStorageStrategy.java:201) ~[axon-mongo-3.0.5.jar:3.0.5]
    at org.axonframework.mongo.eventsourcing.eventstore.MongoEventStorageEngine.ensureIndexes(MongoEventStorageEngine.java:123) ~[axon-mongo-3.0.5.jar:3.0.5]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_111]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_111]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_111]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_111]
    at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:366) ~[spring-beans-4.3.10.RELEASE.jar:4.3.10.RELEASE]
    at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:311) ~[spring-beans-4.3.10.RELEASE.jar:4.3.10.RELEASE]
    at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:134) ~[spring-beans-4.3.10.RELEASE.jar:4.3.10.RELEASE]
    ... 76 common frames omitted


Process finished with exit code 1

在 Compas 上，它只是说 MongoDB 实例没有在这个地方运行。我检查了我的集群，如下所示。

但我仍然无法连接到 mongo 集群。此外，我还尝试使用“Mongo CLI”，发现错误，如下所示。

下面是我从 MongoDB 图集页面获取的连接字符串。

mongodb+srv://admin_eventdb:<PASSWORD>@experimental-1-epdri.mongodb.net/test?retryWrites=true

请帮忙解决这个问题。

Answer 1

请尝试:

Hostname: experimental-1-epdri.mongodb.net
SRV Record: checked
Authentication: Username / Password
Username: admin_eventdb
Password: <PASSWORD>
Authentication Database: admin
Replica Set Name:
Read Preference: Primary
SSL: System CA / Atlas Deployment
SSL Tunnel: None