一、准备工作
zookeeper的安装需要依赖于jdk，所以这里事先需要安装好jdk，并且配置好jdk的环境变量
二、安装
1. 从zookeeper官网下载zookeeper安装包 apache-zookeeper-3.5.5-bin.tar.gz
2. 使用ftp根据将安装包上传到CentOS并且解压
3. 将解压后的安装包目录中的conf下的zoo_sample.cfg文件复制一份，改名为zoo.cfg.
[root@localhost conf]# ll
总用量 12
-rw-r--r--. 1 2002 2002 535 2月 15 2019 configuration.xsl
-rw-r--r--. 1 2002 2002 2712 4月 2 21:05 log4j.properties
-rw-r--r--. 1 2002 2002 922 2月 15 2019 zoo_sample.cfg
[root@localhost conf]# cp zoo_sample.cfg zoo.cfg
[root@localhost conf]# pwd
/opt/apache-zookeeper-3.5.5-bin/conf
[root@localhost conf]# ll
总用量 16
-rw-r--r--. 1 2002 2002 535 2月 15 2019 configuration.xsl
-rw-r--r--. 1 2002 2002 2712 4月 2 21:05 log4j.properties
-rw-r--r--. 1 root root 922 9月 19 13:29 zoo.cfg
-rw-r--r--. 1 2002 2002 922 2月 15 2019 zoo_sample.cfg
[root@localhost conf]#
4. 启动zookeeper
[root@localhost apache-zookeeper-3.5.5-bin]# pwd
/opt/apache-zookeeper-3.5.5-bin
[root@localhost apache-zookeeper-3.5.5-bin]# sh bin/zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /opt/apache-zookeeper-3.5.5-bin/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
[root@localhost apache-zookeeper-3.5.5-bin]#
5. 查看zookeeper的状态
[root@localhost apache-zookeeper-3.5.5-bin]# sh bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /opt/apache-zookeeper-3.5.5-bin/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost.
Mode: standalone
[root@localhost apache-zookeeper-3.5.5-bin]#
6. 使用客户端连接zookeeper
[root@localhost apache-zookeeper-3.5.5-bin]# sh bin/zkCli.sh
Connecting to localhost:2181
2019-09-19 13:34:05,515 [myid:] - INFO [main:Environment@109] - Client environment:zookeeper.version=3.5.5-390fe37ea45dee01bf87dc1c042b5e3dcce88653, built on 05/03/2019 12:07 GMT
2019-09-19 13:34:05,519 [myid:] - INFO [main:Environment@109] - Client environment:host.name=localhost
2019-09-19 13:34:05,519 [myid:] - INFO [main:Environment@109] - Client environment:java.version=1.8.0_211
2019-09-19 13:34:05,521 [myid:] - INFO [main:Environment@109] - Client environment:java.vendor=Oracle Corporation
2019-09-19 13:34:05,521 [myid:] - INFO [main:Environment@109] - Client environment:java.home=/root/software/jdk1.8.0_211/jre
2019-09-19 13:34:05,521 [myid:] - INFO [main:Environment@109] - Client environment:java.class.path=/opt/apache-zookeeper-3.5.5-bin/bin/../zookeeper-server/target/classes:/opt/apache-zookeeper-3.5.5-bin/bin/../build/classes:/opt/apache-zookeeper-3.5.5-bin/bin/../zookeeper-server/target/lib/*.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../build/lib/*.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/zookeeper-jute-3.5.5.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/zookeeper-3.5.5.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/slf4j-log4j12-1.7.25.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/slf4j-api-1.7.25.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/netty-all-4.1.29.Final.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/log4j-1.2.17.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/json-simple-1.1.1.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/jline-2.11.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/jetty-util-9.4.17.v20190418.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/jetty-servlet-9.4.17.v20190418.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/jetty-server-9.4.17.v20190418.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/jetty-security-9.4.17.v20190418.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/jetty-io-9.4.17.v20190418.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/jetty-http-9.4.17.v20190418.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/javax.servlet-api-3.1.0.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/jackson-databind-2.9.8.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/jackson-core-2.9.8.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/jackson-annotations-2.9.0.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/commons-cli-1.2.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../lib/audience-annotations-0.5.0.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../zookeeper-*.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../zookeeper-server/src/main/resources/lib/*.jar:/opt/apache-zookeeper-3.5.5-bin/bin/../conf:.:/root/software/jdk1.8.0_211/lib.tools.jar
2019-09-19 13:34:05,521 [myid:] - INFO [main:Environment@109] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2019-09-19 13:34:05,521 [myid:] - INFO [main:Environment@109] - Client environment:java.io.tmpdir=/tmp
2019-09-19 13:34:05,521 [myid:] - INFO [main:Environment@109] - Client environment:java.compiler=<NA>
2019-09-19 13:34:05,521 [myid:] - INFO [main:Environment@109] - Client environment:os.name=Linux
2019-09-19 13:34:05,521 [myid:] - INFO [main:Environment@109] - Client environment:os.arch=amd64
2019-09-19 13:34:05,521 [myid:] - INFO [main:Environment@109] - Client environment:os.version=3.10.0-957.el7.x86_64
2019-09-19 13:34:05,521 [myid:] - INFO [main:Environment@109] - Client environment:user.name=root
2019-09-19 13:34:05,521 [myid:] - INFO [main:Environment@109] - Client environment:user.home=/root
2019-09-19 13:34:05,522 [myid:] - INFO [main:Environment@109] - Client environment:user.dir=/opt/apache-zookeeper-3.5.5-bin
2019-09-19 13:34:05,522 [myid:] - INFO [main:Environment@109] - Client environment:os.memory.free=24MB
2019-09-19 13:34:05,523 [myid:] - INFO [main:Environment@109] - Client environment:os.memory.max=247MB
2019-09-19 13:34:05,523 [myid:] - INFO [main:Environment@109] - Client environment:os.memory.total=29MB
2019-09-19 13:34:05,525 [myid:] - INFO [main:ZooKeeper@868] - Initiating client connection, connectString=localhost:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@66cd51c3
2019-09-19 13:34:05,536 [myid:] - INFO [main:X509Util@79] - Setting -D jdk.tls.rejectClientInitiatedRenegotiation=true to disable client-initiated TLS renegotiation
2019-09-19 13:34:05,550 [myid:] - INFO [main:ClientCnxnSocket@237] - jute.maxbuffer value is 4194304 Bytes
2019-09-19 13:34:05,564 [myid:] - INFO [main:ClientCnxn@1653] - zookeeper.request.timeout value is 0. feature enabled=
2019-09-19 13:34:05,573 [myid:localhost:2181] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@1112] - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
Welcome to ZooKeeper!
JLine support is enabled
2019-09-19 13:34:05,764 [myid:localhost:2181] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@959] - Socket connection established, initiating session, client: /127.0.0.1:47750, server: localhost/127.0.0.1:2181
2019-09-19 13:34:05,831 [myid:localhost:2181] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@1394] - Session establishment complete on server localhost/127.0.0.1:2181, sessionid = 0x100000b9c880000, negotiated timeout = 30000
WATCHER::
WatchedEvent state:SyncConnected type:None path:null
[zk: localhost:2181(CONNECTED) 0]
7. 关闭zookeeper
[root@localhost apache-zookeeper-3.5.5-bin]# sh bin/zkServer.sh stop
ZooKeeper JMX enabled by default
Using config: /opt/apache-zookeeper-3.5.5-bin/bin/../conf/zoo.cfg
Stopping zookeeper ... STOPPED
[root@localhost apache-zookeeper-3.5.5-bin]#
至此，zookeeper单机版本安装完毕。
