2019-12-30 12:02:50,484 [myid:1] - WARN [WorkerSender[myid=1]:QuorumCnxManager@382] - Cannot open channel to 2 at election address kafka2.test.com/192.168.43.39:3888
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(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:606)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:368)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.toSend(QuorumCnxManager.java:341)
at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.process(FastLeaderElection.java:449)
at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.run(FastLeaderElection.java:430)
at java.lang.Thread.run(Thread.java:748)
檢查了zoo.cfg和myid文件，配置的都沒有問題。防火牆也關閉了，還是不行。
網上查了一下，
原因一般有：
1.端口被佔用
2.ip地址不是本機網卡
解決方案
如果是端口被佔用，換一個端口監聽即可
如果是原因2.我們需要讓服務器監聽0.0.0.0的ip(所有網卡)
在conf中的zoo.cfg配置文件中添加
quorumListenOnAllIPs=true
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版權聲明：本文爲CSDN博主「Chandler丶」的原創文章，遵循 CC 4.0 BY-SA 版權協議，轉載請附上原文出處鏈接及本聲明。
原文鏈接：https://blog.csdn.net/ouzhuangzhuang/article/details/86702770
查看了端口沒有被佔用。在zoo.cfg配置中添加了quorumListenOnAllIPs=true，用以監聽所有網卡，再啓動所有zk servers，管用了。