Cannot open channel to 2 at election address /192.168.190.131:3888java.net.ConnectException:

今天分享一个zookeeper集群连接问题的解决方法，也是困扰了我两天。

3台虚拟机启动3个zookeeper，myid分别是1,2,3，一个leader，一个follower，另一个

Client port found: 2181. Client address: localhost.
Error contacting service. It is probably not running.

一直这样，无法连接。有时候是myid2无法连接，有时候是myid3无法连接，打开日志，发现如下报错

2023-05-18 22:00:48,187 [myid:3] - INFO  [QuorumPeer[myid=3](plain=[0:0:0:0:0:0:0:0]:2181)(secure=disabled):FastLeaderElection@919] - Notification time out: 6400
2023-05-18 22:00:48,189 [myid:3] - WARN  [WorkerSender[myid=3]:QuorumCnxManager@685] - Cannot open channel to 2 at election address /192.168.190.131:3888
java.net.ConnectException: Connection refused (Connection refused)
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
    at java.net.AbstractPlainSocketImpl.connectToAddress(Abstract