zookeeper | Error contacting service. It is probably not running

问题描述

各个节点zkServer.sh start启动后，查看状态zkServer.sh status
出现报错
Error contacting service. It is probably not running
查看zookeeper日志，有类似警告

Cannot open channel to * at election address *
java.net.ConnectException: Connection refused

解决方案

网上有很多解决方案

1. 检查端口和防火墙

netstat -nlpt|grep 2181


systemctl stop firewalld.service
systemctl stop iptables.service

2. 检查zoo.cfg与myid是否一致

server.1=master:2888:3888
server.2=slave1:2888:3888
server.3=slave2:2888:3888

3. 检查hosts，ip是否正确以及127.0.0.1不要绑定master和slave，需要额外在下面添加

4. 删除data中的zookeeper_server.pid后所有zoo节点重启，