ZooKeeper集群搭建中出现错误：

[myid:1] - WARN  [QuorumPeer[myid=1](plain=0.0.0.0:2181)(secure=disabled):QuorumCnxManager@685] - Cannot open channel to 3 at election address /x.x.x.x:3883
java.net.ConnectException: Connection refused (Connection refused)
	at java.net.PlainSocketImpl.socketConnect(Native Method)
	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
	at java.net.Socket.connect(Socket.java:606)
	at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:656)
	at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:713)
	at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectAll(QuorumCnxManager.java:741)
	at org.apache.zookeeper.server.quorum.FastLeaderElection.lookForLeader(FastLeaderElection.java:910)
	at org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:1229)

问题分析：

一般出现此问题原因有：

• 端口被占用
• IP地址不是本机网卡

解决：

• 换一个端口进行监听
• 让服务器监听所有网卡
  在配置文件conf/zoo.cfg中添加

quorumListenOnAllIPs=true

本文仅作为本人学习使用，如有错误或不足欢迎指正！