CentOS7防火墙开启状态下，解决zookeeper不能访问

启动zookeeper&＃xff0c;查看zookeeper状态&＃xff0c;显示如下&＃xff1a;

Error contacting service. It is probably not running.


不知所云&＃xff0c;查看日志&＃xff0c;zkServer同目录有一文件zookeeper.out&＃xff0c;点他&＃xff0c;看起来

Cannot open channel to 2 at election address node200/192.168.197.129:3888
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:558)at org.apache.zookeeper.server.quorum.QuorumCnxManager.toSend(QuorumCnxManager.java:534)at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.process(FastLeaderElection.java:454)at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.run(FastLeaderElection.java:435)at java.lang.Thread.run(Thread.java:748)


反正就是报错&＃xff0c;一开始以为是自己设置的3888端口在防火墙没有打开&＃xff0c;于是打开它&＃xff0c;顺便还是2888也被我打开了&＃xff0c;然后没什么用&＃xff0c;怎么也没有想到会是2181端口的问题&＃xff0c;其实还要打开2181端口。

firewall-cmd --zone&＃61;public --add-port&＃61;2181/tcp --permanent


于是就好了&＃xff01;我知道直接关闭防火墙简单粗暴有效&＃xff0c;不过我就想开着防火墙还想用zookeeper。