Hadoop搭建HA遇到的坑

时间：2021-02-01 12:17:43 收藏：0 阅读：0

重要报错信息

Cannot open channel to 2 at election address node03/172.17.0.4:3888
java.net.ConnectException: Connection refused (Connection refused)

2021-01-30 19:44:04,310 ERROR org.apache.hadoop.ha.NodeFencer: Unable to fence service by any configured method.
2021-01-30 19:44:04,310 WARN org.apache.hadoop.ha.ActiveStandbyElector: Exception handling the winning of election
java.lang.RuntimeException: Unable to fence NameNode at node01/172.17.0.2:8020
java.io.EOFException: End of File Exception between local host is: "node02/172.17.0.3"; destination host is: "node02":8020; : java.io.EOFException; For more details see: http://wiki.apache.org/hadoop/EOFException
Caused by: java.io.EOFException
2021-01-30 19:44:06,535 WARN org.apache.hadoop.ha.FailoverController: Unable to gracefully make NameNode at node01/172.17.0.2:8020 standby (unable to connect)
java.net.ConnectException: Call From node02/172.17.0.3 to node01:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
2021-01-30 19:44:06,535 WARN org.apache.hadoop.ha.SshFenceByTcpPort: Unable to create SSH session
com.jcraft.jsch.JSchException: invalid privatekey: [B@1bfa0880

所有的节点角色均可正常运行，当我将node01中的Active状态的NameNode停止，node02中的NameNode并不会由StandBy状态转变为Active，而重新将node01中的NameNode启动后，node02中的NameNode转变为Active状态。