zookeeper

https://www.cnblogs.com/linuxprobe/p/5851699.html

集中式服务，维护配置信息，命名服务，分布式同步，组服务

https://www.jianshu.com/p/4e5ff92e1035

1.安装JDK

JDK下载地址：http://www.oracle.com/technetwork/java/javase/downloads/index.html

https://www.cnblogs.com/Dylansuns/p/6974272.html

2.