ZooKeeper集群搭建中出現錯誤：

[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)

問題分析：

一般出現此問題原因有：

• 端口被占用
• IP地址不是本機網卡

解決：

• 換一個端口進行監聽

• 讓服務器監聽所有網卡

  在配置文件conf/zoo.cfg中添加

  quorumListenOnAllIPs=true

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總結

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