安装zookeeper需要先安装java,请看linux centos 安装java jdk

1. 下载zookeeper并解压

   zookeeper下载链接：http://archive.apache.org/dist/zookeeper/

   解压zookeeper 

   tar -zxvf zookeeper-3.4.5.tar.gz   

    
   

2. 建立zoo.cfg配置文件

   在conf目录，把zoo_sample.cfg复制成zoo.cfg,使用默认配置

   cd zookeeper-3.4.5/conf

   cp zoo_sample.cfg zoo.cfg 

    

   配置文件中，各个语句的含义：

   　　　　tickTime : 服务器与客户端之间交互的基本时间单元（ms）

   　　　　dataDir : 保存zookeeper数据路径

   　　　　dataLogDir : 保存zookeeper日志路径，当此配置不存在时默认路径与dataDir一致

   　　　　clientPort : 客户端访问zookeeper时经过服务器端时的端口号

   可以自己修改相应的配置

3. 启动或停止zookeeper的命令

   ./bin/zkServer.sh start

   ./bin/zkServer.sh stop

   ./bin/zkServer.sh restart

   ./bin/zkServer.sh status

4. 客户端查看是否安装成功

        ./bin/zkCli.sh

启动zookeeper后启动客户端，出现下面信息，表示安装成功：

[root@localhost zookeeper-3.4.0]# ./bin/zkCli.sh
Connecting to localhost:2181
2018-09-15 08:11:45,304 [myid:] - INFO  [main:Environment@98] - Client environment:zookeeper.version=3.4.0-1202560, built on 11/16/2011 07:18 GMT
2018-09-15 08:11:45,312 [myid:] - INFO  [main:Environment@98] - Client environment:host.name=localhost
2018-09-15 08:11:45,312 [myid:] - INFO  [main:Environment@98] - Client environment:java.version=1.8.0_181
2018-09-15 08:11:45,312 [myid:] - INFO  [main:Environment@98] - Client environment:java.vendor=Oracle Corporation
2018-09-15 08:11:45,313 [myid:] - INFO  [main:Environment@98] - Client environment:java.home=/usr/local/src/jdk1.8.0_181/jre
2018-09-15 08:11:45,313 [myid:] - INFO  [main:Environment@98] - Client environment:java.class.path=/usr/local/application/zookeeper/zookeeper-3.4.0/bin/../build/classes:/usr/local/application/zookeeper/zookeeper-3.4.0/bin/../build/lib/*.jar:/usr/local/application/zookeeper/zookeeper-3.4.0/bin/../lib/slf4j-log4j12-1.6.1.jar:/usr/local/application/zookeeper/zookeeper-3.4.0/bin/../lib/slf4j-api-1.6.1.jar:/usr/local/application/zookeeper/zookeeper-3.4.0/bin/../lib/netty-3.2.2.Final.jar:/usr/local/application/zookeeper/zookeeper-3.4.0/bin/../lib/log4j-1.2.15.jar:/usr/local/application/zookeeper/zookeeper-3.4.0/bin/../lib/jline-0.9.94.jar:/usr/local/application/zookeeper/zookeeper-3.4.0/bin/../zookeeper-3.4.0.jar:/usr/local/application/zookeeper/zookeeper-3.4.0/bin/../src/java/lib/*.jar:/usr/local/application/zookeeper/zookeeper-3.4.0/bin/../conf:.:/usr/local/src/jdk1.8.0_181/jre/lib/rt.jar:/usr/local/src/jdk1.8.0_181/lib/dt.jar:/usr/local/src/jdk1.8.0_181/lib/tools.jar
2018-09-15 08:11:45,313 [myid:] - INFO  [main:Environment@98] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2018-09-15 08:11:45,313 [myid:] - INFO  [main:Environment@98] - Client environment:java.io.tmpdir=/tmp
2018-09-15 08:11:45,314 [myid:] - INFO  [main:Environment@98] - Client environment:java.compiler=<NA>
2018-09-15 08:11:45,314 [myid:] - INFO  [main:Environment@98] - Client environment:os.name=Linux
2018-09-15 08:11:45,314 [myid:] - INFO  [main:Environment@98] - Client environment:os.arch=amd64
2018-09-15 08:11:45,314 [myid:] - INFO  [main:Environment@98] - Client environment:os.version=3.10.0-862.el7.x86_64
2018-09-15 08:11:45,315 [myid:] - INFO  [main:Environment@98] - Client environment:user.name=root
2018-09-15 08:11:45,315 [myid:] - INFO  [main:Environment@98] - Client environment:user.home=/root
2018-09-15 08:11:45,315 [myid:] - INFO  [main:Environment@98] - Client environment:user.dir=/usr/local/application/zookeeper/zookeeper-3.4.0
2018-09-15 08:11:45,316 [myid:] - INFO  [main:ZooKeeper@433] - Initiating client connection, connectString=localhost:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@4b85612c
2018-09-15 08:11:45,341 [myid:] - INFO  [main-SendThread():ClientCnxn$SendThread@933] - Opening socket connection to server /0:0:0:0:0:0:0:1:2181
Welcome to ZooKeeper!
JLine support is enabled
2018-09-15 08:11:45,454 [myid:] - INFO  [main-SendThread(localhost:2181):ClientCnxn$SendThread@846] - Socket connection established to localhost/0:0:0:0:0:0:0:1:2181, initiating session
2018-09-15 08:11:45,485 [myid:] - INFO  [main-SendThread(localhost:2181):ClientCnxn$SendThread@1181] - Session establishment complete on server localhost/0:0:0:0:0:0:0:1:2181, sessionid = 0x165dd1fc7540002, negotiated timeout = 30000
WATCHER::
WatchedEvent state:SyncConnected type:None path:null
[zk: localhost:2181(CONNECTED) 0]