zookeeper单机版安装

ZooKeeper是一个分布式的，开放源码的分布式应用程序协调服务，是Google的Chubby一个开源的实现，是Hadoop和Hbase的重要组件。它是一个为分布式应用提供一致性服务的软件，提供的功能包括：配置维护、域名服务、分布式同步、组服务等。

ZooKeeper的目标就是封装好复杂易出错的关键服务，将简单易用的接口和性能高效、功能稳定的系统提供给用户，今天做单机版，一台就够了。

实验环境：

主机名	系统	IP地址
hadoop1	CentOS  6.5	192.168.241.131

zookeeper3.4.9 的tar包链接为https://pan.baidu.com/s/1bpqZ9bHgzeri53AWgW2L4Q  提取码：sbp0 永久有效。

开始步骤：

检查jdk环境：为jdk1.8最好，随便什么方式安装都行。

java -version
java version "1.8.0_152"
Java(TM) SE Runtime Environment (build 1.8.0_152-b16)
Java HotSpot(TM) 64-Bit Server VM (build 25.152-b16, mixed mode)

1.解压修改配置文件，注意将zookeeper包解压在/data/soft目录下。

tar -xvf zookeeper-3.4.9.tar.gz　
mv zookeeper-3.4.9 zookeeper　
mv conf/zoo_sample.cfg  conf/zoo.cfg

　目录/data/soft需要自己先创建，至于后面的zookeeper/data里的data目录可以自己创建也行，或者改完后启动服务，系统会自动创建一个data目录。

vim conf/zoo.cfg 
dataDir=/data/soft/zookeeper/data

2.服务说明，里面有详细的使用参数　

sh bin/zkServer.sh 
ZooKeeper JMX enabled by default
Using config: /data/soft/zookeeper/bin/../conf/zoo.cfg
Usage: bin/zkServer.sh {start|start-foreground|stop|restart|status|upgrade|print-cmd}

3.启动服务

sh bin/zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /data/soft/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

查看服务是否启动完成

ps -ef|grep zookeeper
root 5851 1 0 13:21 pts/0 00:00:01 /usr/local/jdk1.8.0_152/bin/java -Dzookeeper.log.dir=. -Dzookeeper.root.logger=INFO,CONSOLE -cp /data/soft/zookeeper/bin/../build/classes:/data/soft/zookeeper/bin/../build/lib/*.jar:/data/soft/zookeeper/bin/../lib/slf4j-log4j12-1.6.1.jar:/data/soft/zookeeper/bin/../lib/slf4j-api-1.6.1.jar:/data/soft/zookeeper/bin/../lib/netty-3.10.5.Final.jar:/data/soft/zookeeper/bin/../lib/log4j-1.2.16.jar:/data/soft/zookeeper/bin/../lib/jline-0.9.94.jar:/data/soft/zookeeper/bin/../zookeeper-3.4.9.jar:/data/soft/zookeeper/bin/../src/java/lib/*.jar:/data/soft/zookeeper/bin/../conf:.:/usr/local/jdk1.8.0_152/lib/dt.jar:/usr/local/jdk1.8.0_152/lib/tools.jar -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.local.only=false org.apache.zookeeper.server.quorum.QuorumPeerMain /data/soft/zookeeper/bin/../conf/zoo.cfg
root 5944 2594 0 13:24 pts/0 00:00:00 grep zookeeper

查看服务状态，单机版为standalone模式，如下。

sh bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /data/soft/zookeeper/bin/../conf/zoo.cfg
Mode: standalone

可以进入zookeeper的交互模式

sh bin/zkCli.sh 
Connecting to localhost:2181
2018-04-19 13:23:24,276 [myid:] - INFO [main:Environment@100] - Client environment:zookeeper.version=3.4.9-1757313, built on 08/23/2016 06:50 GMT
2018-04-19 13:23:24,280 [myid:] - INFO [main:Environment@100] - Client environment:host.name=hadoop1
2018-04-19 13:23:24,280 [myid:] - INFO [main:Environment@100] - Client environment:java.version=1.8.0_152
2018-04-19 13:23:24,283 [myid:] - INFO [main:Environment@100] - Client environment:java.vendor=Oracle Corporation
2018-04-19 13:23:24,283 [myid:] - INFO [main:Environment@100] - Client environment:java.home=/usr/local/jdk1.8.0_152/jre
2018-04-19 13:23:24,283 [myid:] - INFO [main:Environment@100] - Client environment:java.class.path=/data/soft/zookeeper/bin/../build/classes:/data/soft/zookeeper/bin/../build/lib/*.jar:/data/soft/zookeeper/bin/../lib/slf4j-log4j12-1.6.1.jar:/data/soft/zookeeper/bin/../lib/slf4j-api-1.6.1.jar:/data/soft/zookeeper/bin/../lib/netty-3.10.5.Final.jar:/data/soft/zookeeper/bin/../lib/log4j-1.2.16.jar:/data/soft/zookeeper/bin/../lib/jline-0.9.94.jar:/data/soft/zookeeper/bin/../zookeeper-3.4.9.jar:/data/soft/zookeeper/bin/../src/java/lib/*.jar:/data/soft/zookeeper/bin/../conf:.:/usr/local/jdk1.8.0_152/lib/dt.jar:/usr/local/jdk1.8.0_152/lib/tools.jar
2018-04-19 13:23:24,283 [myid:] - INFO [main:Environment@100] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2018-04-19 13:23:24,284 [myid:] - INFO [main:Environment@100] - Client environment:java.io.tmpdir=/tmp
2018-04-19 13:23:24,284 [myid:] - INFO [main:Environment@100] - Client environment:java.compiler=<NA>
2018-04-19 13:23:24,284 [myid:] - INFO [main:Environment@100] - Client environment:os.name=Linux
2018-04-19 13:23:24,284 [myid:] - INFO [main:Environment@100] - Client environment:os.arch=amd64
2018-04-19 13:23:24,284 [myid:] - INFO [main:Environment@100] - Client environment:os.version=2.6.32-431.el6.x86_64
2018-04-19 13:23:24,284 [myid:] - INFO [main:Environment@100] - Client environment:user.name=root
2018-04-19 13:23:24,284 [myid:] - INFO [main:Environment@100] - Client environment:user.home=/root
2018-04-19 13:23:24,284 [myid:] - INFO [main:Environment@100] - Client environment:user.dir=/data/soft/zookeeper
2018-04-19 13:23:24,287 [myid:] - INFO [main:ZooKeeper@438] - Initiating client connection, connectString=localhost:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@579bb367
Welcome to ZooKeeper!
2018-04-19 13:23:24,386 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@1032] - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
JLine support is enabled
2018-04-19 13:23:24,539 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@876] - Socket connection established to localhost/127.0.0.1:2181, initiating session
2018-04-19 13:23:24,579 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@1299] - Session establishment complete on server localhost/127.0.0.1:2181, sessionid = 0x162dc5a0a620000, negotiated timeout = 30000

WATCHER::

WatchedEvent state:SyncConnected type:None path:null
[zk: localhost:2181(CONNECTED) 0] ls /
[zookeeper]

4.停止服务

sh bin/zkServer.sh stop
ZooKeeper JMX enabled by default
Using config: /data/soft/zookeeper/bin/../conf/zoo.cfg
Stopping zookeeper ... STOPPED

查看服务是否关闭。

ps -ef|grep zookeeper
root 5967 2594 0 13:25 pts/0 00:00:00 grep zookeeper

这是简单的单机版，我尽量做得简单，快速，直接，希望朋友们多多支持！！！