zookeeper：Error contacting service. It is probably not running.
因为我们配置的是server.1=zookeeper1:2888:3888；没有修改/etc/hosts文件所以，计算机无法识别zookeeper1
要在/etc/hosts目录下添加如下内容：
192.168.10.102 zookeeper1
192.168.10.103 zookeeper2
192.168.10.104 zookeeper3
因为我们配置的是server.1=zookeeper1:2888:3888；没有修改/etc/hosts文件所以，计算机无法识别zookeeper1
要在/etc/hosts目录下添加如下内容：
192.168.10.102 zookeeper1
192.168.10.103 zookeeper2
192.168.10.104 zookeeper3
