Question

我刚刚创建了一个免费的MongoDB Atlas集群实例。但是由于某种原因，我无法从应用程序以及MongoDB Compas进行连接。

当我尝试运行我的应用程序时，出现错误提示。

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实例不在此位置运行。我已经检查了群集，然后看到以下内容。

但是我仍然无法连接到mongo集群。此外，我还在Mongo CLI上尝试过，发现错误如下所示。

下面是我从MongoDB地图集页面获得的连接字符串。

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

请帮助解决此问题。

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

Answer 2

我有相同的https://developers.facebook.com/docs/unity/reference/current/FB.ShareLink。通过使用Java Driver 3.4的连接字符串，它将是：

mongodb://user:<PASSWORD>@cluster0-shard-00-00-ox90k.mongodb.net:27017,cluster0-shard-00-01-ox90k.mongodb.net:27017,cluster0-shard-00-02-ox90k.mongodb.net:27017/test?ssl=true&replicaSet=Cluster0-shard-0&authSource=admin&retryWrites=true

issue

我写了自己的密码，而不是<PASSWORD>。 admin1是我的管理员用户。

已更新：如果要使用驱动程序3.6+，则需要编写而不是格式化连接

MongoClientURI uri = new MongoClientURI("mongodb+srv://admin1:mypassword@cluster0-ox90k.mongodb.net/test?retryWrites=true");
MongoClient mongoClient = new MongoClient(uri);

此变体（）：

   MongoClient mongoClient = MongoClients.create("mongodb+srv://admin1:mypassword@cluster0-ox90k.mongodb.net/test?retryWrites=true");

注意：密码需要类似于mongodb://user:<mypassword>@...的形式写，只是格式为mongodb://user:mypassword@...，不用大括号<>。

Answer 3

用于Node.js ：结帐Atlas MongoDB connection

library(dplyr)

df1 %>% 
  tidyr::fill(holiday, .direction = 'up') %>%
  group_by(holiday) %>%
  mutate(new_holiday = replace(holiday, row_number() < n() - 2, NA))

#   date       holiday   new_holiday
#   <date>     <chr>     <chr>      
# 1 2019-12-18 Christmas NA         
# 2 2019-12-19 Christmas NA         
# 3 2019-12-20 Christmas NA         
# 4 2019-12-21 Christmas NA         
# 5 2019-12-22 Christmas NA         
# 6 2019-12-23 Christmas Christmas  
# 7 2019-12-24 Christmas Christmas  
# 8 2019-12-25 Christmas Christmas  
# 9 2019-12-26 New Year  NA         
#10 2019-12-27 New Year  NA         
#11 2019-12-28 New Year  NA         
#12 2019-12-29 New Year  NA         
#13 2019-12-30 New Year  New Year   
#14 2019-12-31 New Year  New Year   
#15 2020-01-01 New Year  New Year

Answer 4

只是尝试使用Atlas。这是适用于Spring Boot 2.3.1.RELEASE

的配置

spring:
  data:
    mongodb:
      database: sample_training 
      uri: mongodb+srv://<user>:<pass>@cluster0-hosturl.aws|gcp.mongodb.net/?retryWrites=true&w=majority

MongoDB地图集，连接不起作用

4 个答案: