Error contacting service. It is probably not running.

Error contacting service. It is probably not running. Error contacting service. It is probably not running.

一直运行正常的zookeeper突然有两个节点启动不了了
报错如下：Error contacting service. It is probably not running.

查看没有启动的zookeeper.out 发现错误：
Cannot open channel to 102 at election address node102/192.168.50.102:3888

再往下看，最后一行说：
/home/user1/modules/zookeeper-3.4.6/data/version-2/snapshot.a000001f7 没有限权。

进入/home/user1/modules/zookeeper-3.4.6/data/version-2/目录，发现有两个文件的用户和用户组属于root。
我便想起来，我在root下启动了zookeeper，虽然后来关闭了，但还是产生了错误，用chown 命令把文件所属用户和用户组改了之后，再重新启动，该节点服务正常启动

然后再修改另一个节点，服务就正常启动了