一、单机版
1、下载
首先cd到/usr/locla目录下，然后wegt下载：
1）root@centos-7# cd /usr/local
2)wget https://archive.apache.org/dist/zookeeper/zookeeper-3.4.9/zookeeper-3.4.9.tar.gz
2、解压
tar -zxvf zookeeper-3.4.9.tar.gz
3、进入到/zookeeper-3.4.9/conf复制zoo_sample.cfg为zoo.cfg修改
root@centos-7 zookeeper-3.4.9# cd conf
root@centos-7 conf# cp zoo_sample.cfg zoo.cfg
root@centos-7 conf# vim zoo.cfg
4、Zookeeper集群中，每一个节点（即每台单机zookeeper服务配置）都需创建data目录、logs目录以及myid文件
（说明：myid文件需创建在data目录下，其值为后续zoo.cfg中配置的第几号服务器。笔者在linux机器上的myid文件目录为/usr/local/zookeeper-3.4.9/data/myid,其值为1；在另外2台机器上myid文件的值依次分别为2、3）
5、用vim打开/etc/目录下的配置文件profile
vim /etc/profile
然后在其尾部追加如下内容
export ZOOKEEPER_HOME=/usr/local/services/zookeeper/zookeeper-3.4.9/
export PATH=$ZOOKEEPER_HOME/bin:$PATH
export PATH
6、使/etc/ 目录下的profile文件即时生效
root@centos-7 # source /etc/profile
7、启动zookeeper
[root@n1 zookeeper-3.4.9]# cd bin/
root@centos-7 # zkServer.sh start
8、状态查看zkServer.sh status
9、停止服务
关闭zookeeper服务：zkServer.sh stop
10、重启服务
重启zookeeper服务：zkServer.sh restart
二、集群版
搭建集群版前，先看单机版（至少三台服务器或虚拟机）
1、修改hosts配置(可根据自己需要修改): 每台zookeeper的linux都要一样
x.x.x.1 s1
x.x.x.2 s2
x.x.x.3 s3
2、修改zoo.cfg
3、集群版要先检查zookeeper防火墙是否关闭，然后关闭
#查看防火墙状态 firewall-cmd --state
#关闭防火墙 systemctl stop firewalld.service
4、逐个启动，启动完用zkServer.sh status 命令查看，你会发现所有的都成功了
5、可以通过客户端，连接到ZooKeeper集群上。对于客户端来说，ZooKeeper是一个整体（ensemble），你可以在任何一个结点上建立到服务集群的连接，例如：
[root@ms bin]# zkCli.sh -server 192.168.1.139:2181
Connecting to 192.168.1.139:2181
2019-10-16 17:23:13,823 [myid:] - INFO [main:Environment@100] - Client environment:zookeeper.version=3.4.9-1757313, built on 08/23/2016 06:50 GMT
2019-10-16 17:23:13,830 [myid:] - INFO [main:Environment@100] - Client environment:host.name=<NA>
2019-10-16 17:23:13,830 [myid:] - INFO [main:Environment@100] - Client environment:java.version=1.8.0_65
2019-10-16 17:23:13,835 [myid:] - INFO [main:Environment@100] - Client environment:java.vendor=Oracle Corporation
2019-10-16 17:23:13,835 [myid:] - INFO [main:Environment@100] - Client environment:java.home=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.65-3.b17.el7.x86_64/jre
2019-10-16 17:23:13,835 [myid:] - INFO [main:Environment@100] - Client environment:java.class.path=/usr/local/zookeeper-3.4.9/bin/../build/classes:/usr/local/zookeeper-3.4.9/bin/../build/lib/*.jar:/usr/local/zookeeper-3.4.9/bin/../lib/slf4j-log4j12-1.6.1.jar:/usr/local/zookeeper-3.4.9/bin/../lib/slf4j-api-1.6.1.jar:/usr/local/zookeeper-3.4.9/bin/../lib/netty-3.10.5.Final.jar:/usr/local/zookeeper-3.4.9/bin/../lib/log4j-1.2.16.jar:/usr/local/zookeeper-3.4.9/bin/../lib/jline-0.9.94.jar:/usr/local/zookeeper-3.4.9/bin/../zookeeper-3.4.9.jar:/usr/local/zookeeper-3.4.9/bin/../src/java/lib/*.jar:/usr/local/zookeeper-3.4.9/bin/../conf:
2019-10-16 17:23:13,835 [myid:] - INFO [main:Environment@100] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2019-10-16 17:23:13,835 [myid:] - INFO [main:Environment@100] - Client environment:java.io.tmpdir=/tmp
2019-10-16 17:23:13,836 [myid:] - INFO [main:Environment@100] - Client environment:java.compiler=<NA>
2019-10-16 17:23:13,836 [myid:] - INFO [main:Environment@100] - Client environment:os.name=Linux
2019-10-16 17:23:13,836 [myid:] - INFO [main:Environment@100] - Client environment:os.arch=amd64
2019-10-16 17:23:13,836 [myid:] - INFO [main:Environment@100] - Client environment:os.version=3.10.0-327.el7.x86_64
2019-10-16 17:23:13,836 [myid:] - INFO [main:Environment@100] - Client environment:user.name=root
2019-10-16 17:23:13,836 [myid:] - INFO [main:Environment@100] - Client environment:user.home=/root
2019-10-16 17:23:13,837 [myid:] - INFO [main:Environment@100] - Client environment:user.dir=/usr/local/zookeeper-3.4.9/bin
2019-10-16 17:23:13,840 [myid:] - INFO [main:ZooKeeper@438] - Initiating client connection, connectString=192.168.1.139:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@7aec35a
Welcome to ZooKeeper!
2019-10-16 17:23:13,961 [myid:] - INFO [main-SendThread(192.168.1.139:2181):ClientCnxn$SendThread@1032] - Opening socket connection to server 192.168.1.139/192.168.1.139:2181. Will not attempt to authenticate using SASL (unknown error)
JLine support is enabled
2019-10-16 17:23:14,222 [myid:] - INFO [main-SendThread(192.168.1.139:2181):ClientCnxn$SendThread@876] - Socket connection established to 192.168.1.139/192.168.1.139:2181, initiating session
[zk: 192.168.1.139:2181(CONNECTING) 0] 2019-10-16 17:23:14,345 [myid:] - INFO [main-SendThread(192.168.1.139:2181):ClientCnxn$SendThread@1299] - Session establishment complete on server 192.168.1.139/192.168.1.139:2181, sessionid = 0x16dd3c849d20000, negotiated timeout = 30000
WATCHER::
WatchedEvent state:SyncConnected type:None path:null
[root@ms bin]# zkCli.sh -server 192.168.1.136:2181
Connecting to 192.168.1.136:2181
2019-10-16 17:25:20,580 [myid:] - INFO [main:Environment@100] - Client environment:zookeeper.version=3.4.9-1757313, built on 08/23/2016 06:50 GMT
2019-10-16 17:25:20,583 [myid:] - INFO [main:Environment@100] - Client environment:host.name=<NA>
2019-10-16 17:25:20,583 [myid:] - INFO [main:Environment@100] - Client environment:java.version=1.8.0_65
2019-10-16 17:25:20,586 [myid:] - INFO [main:Environment@100] - Client environment:java.vendor=Oracle Corporation
2019-10-16 17:25:20,586 [myid:] - INFO [main:Environment@100] - Client environment:java.home=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.65-3.b17.el7.x86_64/jre
2019-10-16 17:25:20,586 [myid:] - INFO [main:Environment@100] - Client environment:java.class.path=/usr/local/zookeeper-3.4.9/bin/../build/classes:/usr/local/zookeeper-3.4.9/bin/../build/lib/*.jar:/usr/local/zookeeper-3.4.9/bin/../lib/slf4j-log4j12-1.6.1.jar:/usr/local/zookeeper-3.4.9/bin/../lib/slf4j-api-1.6.1.jar:/usr/local/zookeeper-3.4.9/bin/../lib/netty-3.10.5.Final.jar:/usr/local/zookeeper-3.4.9/bin/../lib/log4j-1.2.16.jar:/usr/local/zookeeper-3.4.9/bin/../lib/jline-0.9.94.jar:/usr/local/zookeeper-3.4.9/bin/../zookeeper-3.4.9.jar:/usr/local/zookeeper-3.4.9/bin/../src/java/lib/*.jar:/usr/local/zookeeper-3.4.9/bin/../conf:
2019-10-16 17:25:20,586 [myid:] - INFO [main:Environment@100] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2019-10-16 17:25:20,586 [myid:] - INFO [main:Environment@100] - Client environment:java.io.tmpdir=/tmp
2019-10-16 17:25:20,586 [myid:] - INFO [main:Environment@100] - Client environment:java.compiler=<NA>
2019-10-16 17:25:20,586 [myid:] - INFO [main:Environment@100] - Client environment:os.name=Linux
2019-10-16 17:25:20,586 [myid:] - INFO [main:Environment@100] - Client environment:os.arch=amd64
2019-10-16 17:25:20,586 [myid:] - INFO [main:Environment@100] - Client environment:os.version=3.10.0-327.el7.x86_64
2019-10-16 17:25:20,586 [myid:] - INFO [main:Environment@100] - Client environment:user.name=root
2019-10-16 17:25:20,586 [myid:] - INFO [main:Environment@100] - Client environment:user.home=/root
2019-10-16 17:25:20,587 [myid:] - INFO [main:Environment@100] - Client environment:user.dir=/usr/local/zookeeper-3.4.9/bin
2019-10-16 17:25:20,588 [myid:] - INFO [main:ZooKeeper@438] - Initiating client connection, connectString=192.168.1.136:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@7aec35a
2019-10-16 17:25:20,617 [myid:] - INFO [main-SendThread(192.168.1.136:2181):ClientCnxn$SendThread@1032] - Opening socket connection to server 192.168.1.136/192.168.1.136:2181. Will not attempt to authenticate using SASL (unknown error)
Welcome to ZooKeeper!
JLine support is enabled
2019-10-16 17:25:20,713 [myid:] - INFO [main-SendThread(192.168.1.136:2181):ClientCnxn$SendThread@876] - Socket connection established to 192.168.1.136/192.168.1.136:2181, initiating session
[zk: 192.168.1.136:2181(CONNECTING) 0] 2019-10-16 17:25:20,783 [myid:] - INFO [main-SendThread(192.168.1.136:2181):ClientCnxn$SendThread@1299] - Session establishment complete on server 192.168.1.136/192.168.1.136:2181, sessionid = 0x26dd3c849990000, negotiated timeout = 30000
WATCHER::
WatchedEvent state:SyncConnected type:None path:null
参考文章：
https://blog.csdn.net/cndmss/article/details/80220273
https://blog.csdn.net/u010199866/article/details/81907956
（Dubbo+zk 测试请移步下一篇：https://blog.csdn.net/qq_34395857/article/details/102683910）