zookeeper启动错误 Cannot open channel to * at election address /*

Cannot open channel to 3 at election address /100.73.41.14:3888
java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:579)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:562)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.toSend(QuorumCnxManager.java:538)
at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.process(FastLeaderElection.java:452)
at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.run(FastLeaderElection.java:433)

at java.lang.Thread.run(Thread.java:745)

查了很多资料，说有多种可能性

1. 防火墙问题      方法：关闭防火墙或者开放对应端口

2. 有zoo.cfg配置文件问题，   仔细检查一遍

3. jdk的问题（这个我没遇到过）

可我发现我不是这些问题，我防火墙关闭了， 配置也检查了好几遍了，还是开启不了  

最后在i2麒麟的http://blog.csdn.net/qq_26840065/article/details/50985765  博客中找到了解决方案

把第一个配置好的zoo.cfg 复制到其他集群机器上

然后重启zookeeper   就可以了

记录一下，同时也为其他人少走弯路做点帮助