org.apache.zookeeper.ClientCnxn - Opening socket connection to server

org.apache.zookeeper.ClientCnxn - Opening socket connection to server 192.168.0.213/192.168.0.213:2181. Will not attempt to authenticate using SASL (unknown error)

解决方案，服务器中检查以下内容：

1. zookeeper的服务没有开启

执行./zkServer.sh start

2. 访问不到zookeeper中心是因为需要关闭防火墙：service iptables stop 否则访问不到2181端口

3. 注意配置中的zookeeper的ip地址是否写错

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