一、Zookeeper的安装
1.http://www-us.apache.org/dist/zookeeper/stable/下载Zookeeper安装包，并将zookeeper-3.4.12.tar.gz复制到/home/jun下并解压
[jun@master ~]$ cd zookeeper-3.4.12/ [jun@master zookeeper-3.4.12]$ ls -l total 1604 drwxr-xr-x. 2 jun jun 149 Mar 27 12:32 bin -rw-rw-r--. 1 jun jun 87945 Mar 27 12:32 build.xml drwxr-xr-x. 2 jun jun 77 Mar 27 12:32 conf drwxr-xr-x. 10 jun jun 130 Mar 27 12:32 contrib drwxr-xr-x. 2 jun jun 4096 Mar 27 12:37 dist-maven drwxr-xr-x. 6 jun jun 4096 Mar 27 12:32 docs -rw-rw-r--. 1 jun jun 1709 Mar 27 12:32 ivysettings.xml -rw-rw-r--. 1 jun jun 8197 Mar 27 12:32 ivy.xml drwxr-xr-x. 4 jun jun 4096 Mar 27 12:32 lib -rw-rw-r--. 1 jun jun 11938 Mar 27 12:32 LICENSE.txt -rw-rw-r--. 1 jun jun 3132 Mar 27 12:32 NOTICE.txt -rw-rw-r--. 1 jun jun 1585 Mar 27 12:32 README.md -rw-rw-r--. 1 jun jun 1770 Mar 27 12:32 README_packaging.txt drwxr-xr-x. 5 jun jun 47 Mar 27 12:32 recipes drwxr-xr-x. 8 jun jun 211 Mar 27 12:32 src -rw-rw-r--. 1 jun jun 1483366 Mar 27 12:32 zookeeper-3.4.12.jar -rw-rw-r--. 1 jun jun 819 Mar 27 12:36 zookeeper-3.4.12.jar.asc -rw-rw-r--. 1 jun jun 33 Mar 27 12:32 zookeeper-3.4.12.jar.md5 -rw-rw-r--. 1 jun jun 41 Mar 27 12:32 zookeeper-3.4.12.jar.sha1
2.使用gedit编辑zoo.cfg配置文件
[jun@master zookeeper-3.4.12]$ cp /home/jun/zookeeper-3.4.12/conf/zoo_sample.cfg /home/jun/zookeeper-3.4.12/conf/zoo.cfg [jun@master zookeeper-3.4.12]$ gedit /home/jun/zookeeper-3.4.12/conf/zoo.cfg
将下面的配置增加到最后面，配置的意思是“服务器编号、服务器地址、LF通信端口（Leader与Follower）、选举端口”
server.1=master:2888:3888 server.2=slave0:2888:3888 server.3=slave1:2888:3888
3.创建节点标志文件
由于在zoo.cfg当中配置了三台服务器，每一台服务器本地也需要一个myid文件，里面包含服务器的ID号，需要在三台机器上都创建myid文件。以master为例：
首先递归创建目录（-p）
[jun@master zookeeper-3.4.12]$ mkdir -p /tmp/zookeeper [jun@master zookeeper-3.4.12]$ gedit /tmp/zookeeper/myid
然后新建myid文件并输入对应的id号，只输入一个1即可。
[jun@master zookeeper-3.4.12]$ cat /tmp/zookeeper/myid 1
另外两台机器同理。
4.将Zookeeper安装文件从master复制到slave上（-r的意思是拷贝所有的文件和文件夹）
[jun@master zookeeper-3.4.12]$ scp -r /home/jun/zookeeper-3.4.12/ slave0:~ [jun@master zookeeper-3.4.12]$ scp -r /home/jun/zookeeper-3.4.12/ slave1:~
5.Zookeeper集群的启动
（1）需要在三个节点上分别执行启动操作
[jun@master zookeeper-3.4.12]$ /home/jun/zookeeper-3.4.12/bin/zkServer.sh start ZooKeeper JMX enabled by default Using config: /home/jun/zookeeper-3.4.12/bin/../conf/zoo.cfg Starting zookeeper ... STARTED
[jun@slave0 ~]$ /home/jun/zookeeper-3.4.12/bin/zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /home/jun/zookeeper-3.4.12/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
[jun@slave1 ~]$ /home/jun/zookeeper-3.4.12/bin/zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /home/jun/zookeeper-3.4.12/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
（2）至少启动两台服务器后，集群才会开始选举leader节点，可以在三台服务器上分别查看集群的状态，可以看到slave0节点是leader节点。
[jun@master ~]$ /home/jun/zookeeper-3.4.12/bin/zkServer.sh status ZooKeeper JMX enabled by default Using config: /home/jun/zookeeper-3.4.12/bin/../conf/zoo.cfg Mode: follower [jun@slave0 ~]$ /home/jun/zookeeper-3.4.12/bin/zkServer.sh status ZooKeeper JMX enabled by default Using config: /home/jun/zookeeper-3.4.12/bin/../conf/zoo.cfg Mode: leader [jun@slave1 ~]$ /home/jun/zookeeper-3.4.12/bin/zkServer.sh status ZooKeeper JMX enabled by default Using config: /home/jun/zookeeper-3.4.12/bin/../conf/zoo.cfg Mode: follower
（3）Zookeeper客户端交互式操作
[jun@master ~]$ /home/jun/zookeeper-3.4.12/bin/zkCli.sh -server master:2181 Connecting to master:2181 2018-07-23 11:40:29,091 [myid:] - INFO [main:Environment@100] - Client environment:zookeeper.version=3.4.12-e5259e437540f349646870ea94dc2658c4e44b3b, built on 03/27/2018 03:55 GMT 2018-07-23 11:40:29,093 [myid:] - INFO [main:Environment@100] - Client environment:host.name=master 2018-07-23 11:40:29,093 [myid:] - INFO [main:Environment@100] - Client environment:java.version=1.8.0_171 2018-07-23 11:40:29,095 [myid:] - INFO [main:Environment@100] - Client environment:java.vendor=Oracle Corporation 2018-07-23 11:40:29,095 [myid:] - INFO [main:Environment@100] - Client environment:java.home=/usr/java/jdk1.8.0_171/jre 2018-07-23 11:40:29,096 [myid:] - INFO [main:Environment@100] - Client environment:java.class.path=/home/jun/zookeeper-3.4.12/bin/../build/classes:/home/jun/zookeeper-3.4.12/bin/../build/lib/*.jar:/home/jun/zookeeper-3.4.12/bin/../lib/slf4j-log4j12-1.7.25.jar:/home/jun/zookeeper-3.4.12/bin/../lib/slf4j-api-1.7.25.jar:/home/jun/zookeeper-3.4.12/bin/../lib/netty-3.10.6.Final.jar:/home/jun/zookeeper-3.4.12/bin/../lib/log4j-1.2.17.jar:/home/jun/zookeeper-3.4.12/bin/../lib/jline-0.9.94.jar:/home/jun/zookeeper-3.4.12/bin/../lib/audience-annotations-0.5.0.jar:/home/jun/zookeeper-3.4.12/bin/../zookeeper-3.4.12.jar:/home/jun/zookeeper-3.4.12/bin/../src/java/lib/*.jar:/home/jun/zookeeper-3.4.12/bin/../conf: 2018-07-23 11:40:29,096 [myid:] - INFO [main:Environment@100] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib 2018-07-23 11:40:29,096 [myid:] - INFO [main:Environment@100] - Client environment:java.io.tmpdir=/tmp 2018-07-23 11:40:29,096 [myid:] - INFO [main:Environment@100] - Client environment:java.compiler=<NA> 2018-07-23 11:40:29,096 [myid:] - INFO [main:Environment@100] - Client environment:os.name=Linux 2018-07-23 11:40:29,096 [myid:] - INFO [main:Environment@100] - Client environment:os.arch=amd64 2018-07-23 11:40:29,096 [myid:] - INFO [main:Environment@100] - Client environment:os.version=3.10.0-862.el7.x86_64 2018-07-23 11:40:29,096 [myid:] - INFO [main:Environment@100] - Client environment:user.name=jun 2018-07-23 11:40:29,096 [myid:] - INFO [main:Environment@100] - Client environment:user.home=/home/jun 2018-07-23 11:40:29,096 [myid:] - INFO [main:Environment@100] - Client environment:user.dir=/home/jun 2018-07-23 11:40:29,097 [myid:] - INFO [main:ZooKeeper@441] - Initiating client connection, connectString=master:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@799f7e29 Welcome to ZooKeeper! 2018-07-23 11:40:29,117 [myid:] - INFO [main-SendThread(master:2181):ClientCnxn$SendThread@1028] - Opening socket connection to server master/192.168.1.100:2181. Will not attempt to authenticate using SASL (unknown error) JLine support is enabled 2018-07-23 11:40:29,186 [myid:] - INFO [main-SendThread(master:2181):ClientCnxn$SendThread@878] - Socket connection established to master/192.168.1.100:2181, initiating session 2018-07-23 11:40:29,200 [myid:] - INFO [main-SendThread(master:2181):ClientCnxn$SendThread@1302] - Session establishment complete on server master/192.168.1.100:2181, sessionid = 0x10000b7db500001, negotiated timeout = 30000 WATCHER:: WatchedEvent state:SyncConnected type:None path:null [zk: master:2181(CONNECTED) 0] helo ZooKeeper -server host:port cmd args stat path [watch] set path data [version] ls path [watch] delquota [-n|-b] path ls2 path [watch] setAcl path acl setquota -n|-b val path history redo cmdno printwatches on|off delete path [version] sync path listquota path rmr path get path [watch] create [-s] [-e] path data acl addauth scheme auth quit getAcl path close connect host:port [zk: master:2181(CONNECTED) 1] help ZooKeeper -server host:port cmd args stat path [watch] set path data [version] ls path [watch] delquota [-n|-b] path ls2 path [watch] setAcl path acl setquota -n|-b val path history redo cmdno printwatches on|off delete path [version] sync path listquota path rmr path get path [watch] create [-s] [-e] path data acl addauth scheme auth quit getAcl path close connect host:port [zk: master:2181(CONNECTED) 2] quit Quitting... 2018-07-23 11:40:55,461 [myid:] - INFO [main:ZooKeeper@687] - Session: 0x10000b7db500001 closed 2018-07-23 11:40:55,462 [myid:] - INFO [main-EventThread:ClientCnxn$EventThread@521] - EventThread shut down for session: 0x10000b7db500001