INFO org.mongodb.driver.cluster - Exception in monitor thread while connecting to server :27017 com.mongodb.MongoSocketException: : Temporary failure in name resolution at com.mongodb.ServerAddress.getSocketAddresses(ServerAddress.java:211) at com.mongodb.connection.netty.NettyStream.openAsync(NettyStream.java:109) at com.mongodb.connection.netty.NettyStream.open(NettyStream.java:103) at com.mongodb.internal.connection.InternalStreamConnection.open(InternalStreamConnection.java:128) at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:131) at java.base/java.lang.Thread.run(Thread.java:834) Caused by: java.net.UnknownHostException: : Temporary failure in name resolution at java.base/java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method) at java.base/java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:929) at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1515) at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:848) at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1505) at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1364) at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1298) at com.mongodb.ServerAddress.getSocketAddresses(ServerAddress.java:203) at com.mongodb.connection.netty.NettyStream.openAsync(NettyStream.java:109) at com.mongodb.connection.netty.NettyStream.open(NettyStream.java:103) at com.mongodb.internal.connection.InternalStreamConnection.open(InternalStreamConnection.java:128) at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:131) at java.base/java.lang.Thread.run(Thread.java:834)