1.
1.1创建四台虚拟机并启动：

1.2在shell中建立一个centos7的文件夹里边放四个会话，分别note1,note2,note3,note4

1.3成功建立

2.开始配置
2.1：修改主机名：hostnamectl set-hostname 主机名 --static （永久性的）
重启：reboot
查看主机名：hostname

2.2防火墙的关闭
输入service iptables stop 时，出现下面的错误：

这时就需要安装一个iptables-service:

systemctl stop firewalld 
systemctl  mask firewalld 
yum install iptables-services(安装)
systemctl stop iptables（开机关闭）
service iptables save（保存）

2.3：设置同步按钮


2.4创建zookeeper文件夹


2.5点击xftp6,打开想传的zookeeper-bin文件，
2.6 zookeeper下载地址：
https://mirrors.cloud.tencent.com/apache/zookeeper/zookeeper-3.5.7/
2.7note1,note2,note3,都用此方法上传


2.8：解压：tar -zxvf apache-zookeeper-3.5.7-bin.tar.gz

2.9改名：
mv apache-zookeeper-3.5.7-bin apache-zookeeper
删除tar包

进入data,创建并进入myid，修改里边内容

myid里分别写0,1，2。i,修改；esc退出 ：wq!强制保存退出

进入apache-zookeeper

3.修改zookeeper配置文件：
3.1：进入conf``[root@note1 apache-zookeeper]# cd conf/```
复制zoo_sample.cfg,给zoo.cfg。[root@note1 conf]# cp zoo_sample.cfg zoo.cfg
修改配置文件zoo.cfg 。 [root@note1 conf]# vim zoo.cfg
zoo.cfg配置文件：
dataDir=/data/zookeeper/data
server.0=note1:2888:3888
server.1=note2:2888:3888
server.2=note3:2888:3888

# The number of ticks that the initial 
# synchronization phase can take
initLimit=10
# The number of ticks that can pass between 
# sending a request and getting an acknowledgement
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just 
# example sakes.
dataDir=/data/zookeeper/data
# the port at which the clients will connect
clientPort=2181
# the maximum number of client connections.
# increase this if you need to handle more clients
#maxClientCnxns=60
#
# Be sure to read the maintenance section of the 
# administrator guide before turning on autopurge.
#
# http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
# The number of snapshots to retain in dataDir
#autopurge.snapRetainCount=3
# Purge task interval in hours
# Set to "0" to disable auto purge feature
#autopurge.purgeInterval=1
server.0=note1:2888:3888
server.1=note2:2888:3888
server.2=note3:2888:3888

3.2：启动zookeeper[root@note1 apache-zookeeper]# bin/zkServer.sh start

查看状态：[root@note1 apache-zookeeper]# bin/zkServer.sh status
jps启动：jps
3.3在浏览器上（火狐）访问note1:8080

3.4

完成zookeeper的配置
3.4 ：
查看日志vim logs/zookeeper-root-server-note1.out
分发文件：scp -r apache-zookeeper/root@note2$pwd scp -r apache-zookeeper/root@note3$pwd