在 CentOS7 上安装 zookeeper-3.5.2 服务

 [root@centos-linux src]# pwd
 /usr/local/src

 # 1、创建 /usr/local/src/zookeeper 文件夹
 [root@centos-linux src]# mkdir -p /usr/local/src/zookeeper

 # 2、进入到 /usr/local/src/zookeeper 目录中
 [root@centos-linux src]# cd /usr/local/src/zookeeper

 # 3、下载 zookeeper-3.5.2-alpha.tar.gz
 [root@centos-linux zookeeper]# wget http://mirrors.shu.edu.cn/apache/zookeeper/zookeeper-3.5.2-alpha/zookeeper-3.5.2-alpha.tar.gz
 ---- ::-- http://mirrors.shu.edu.cn/apache/zookeeper/zookeeper-3.5.2-alpha/zookeeper-3.5.2-alpha.tar.gz
 正在解析主机 mirrors.shu.edu.cn (mirrors.shu.edu.cn)... 202.121.199.235
 正在连接 mirrors.shu.edu.cn (mirrors.shu.edu.cn)|202.121.199.235|:... 已连接。
 已发出 HTTP 请求，正在等待回应...  OK
 长度： (18M) [application/x-gzip]
 正在保存至: “zookeeper-3.5.-alpha.tar.gz”

 %[=========================================================================>] ,, 126KB/s 用时 2m 24s

 -- :: ( KB/s) - 已保存 “zookeeper-3.5.-alpha.tar.gz” [/])

 #4、解压缩 zookeeper-3.5.2-alpha.tar.gz
 [root@centos-linux zookeeper]# tar -zxvf zookeeper-3.5.-alpha.tar.gz

 #5、进入到 /usr/local/src/zookeeper/zookeeper-3.5.2-alpha/conf 目录中

 [root@centos-linux zookeeper]# cd zookeeper-3.5.-alpha/conf
 [root@centos-linux conf]# ls
 configuration.xsl log4j.properties zoo_sample.cfg

 # 6、复制 zoo_sample.cfg 文件的并命名为为 zoo.cfg
 [root@centos-linux conf]# cp zoo_sample.cfg zoo.cfg
 [root@centos-linux conf]# ls
 configuration.xsl log4j.properties zoo.cfg zoo_sample.cfg

 # 7、用 vim 打开 zoo.cfg 文件并修改其内容为如下
 [root@centos-linux conf]# vim zoo.cfg

 # dataDir=/tmp/zookeeper
 # The number of milliseconds of each tick
 tickTime=
 # The number of ticks that the initial
 # synchronization phase can take
 initLimit=
 # The number of ticks that can pass between
 # sending a request and getting an acknowledgement
 syncLimit=
 # the directory where the snapshot is stored.
 # do not use /tmp for storage, /tmp here is just
 # example sakes.
 # dataDir=/tmp/zookeeper
 #数据文件夹
 dataDir=/urs/local/src/zookeeper/zookeeper-3.5.2-alpha/data
 #日志文件夹
 dataLogDir=/urs/local/src/zookeeper/zookeeper-3.5.2-alpha/logs
 # the port at which the clients will connect
 clientPort=
 # the maximum number of client connections.
 # increase this if you need to handle more clients
 #maxClientCnxns=
 #
 # Be sure to read the maintenance section of the
 # administrator guide before turning on autopurge.
 #

 # 8、保存并关闭 zoo.cfg 文件
 [root@centos-linux conf]# cd ..
 [root@centos-linux zookeeper-3.5.-alpha]# cd bin
 [root@centos-linux bin]# ls
 README.txt zkCleanup.sh zkCli.cmd zkCli.sh zkEnv.cmd zkEnv.sh zkServer.cmd zkServer-initialize.sh zkServer.sh

 #9、用 vim 打开 /etc/ 目录下的配置文件 profile

 [root@centos-linux bin]# vim /etc/profile

 #10、并在其尾部追加如下内容

 # idea - zookeeper-3.5.2 config start - 2017-04-20

 export ZOOKEEPER_HOME=/usr/local/src/zookeeper/zookeeper-3.5.2-alpha/
 export PATH=$ZOOKEEPER_HOME/bin:$PATH
 export PATH

 # idea - zookeeper-3.5.2 config end - 2017-04-20

 # 11、使 /etc/ 目录下的 profile 文件即可生效
 [root@centos-linux bin]# source /etc/profile

 # 12、启动 zookeeper 服务

 [root@centos-linux bin]# zkServer.sh start
 ZooKeeper JMX enabled by default
 Using config: /usr/local/src/zookeeper/zookeeper-3.5.-alpha/bin/../conf/zoo.cfg
 Starting zookeeper ... STARTED

 #13、查询 zookeeper 状态
 [root@centos-linux bin]# zkServer.sh status
 ZooKeeper JMX enabled by default
 Using config: /usr/local/src/zookeeper/zookeeper-3.5.-alpha/bin/../conf/zoo.cfg
 Client port found: . Client address: localhost.
 Mode: standalone

 # 14、关闭 zookeeper 服务
 [root@centos-linux bin]# zkServer.sh stop
 ZooKeeper JMX enabled by default
 Using config: /usr/local/src/zookeeper/zookeeper-3.5.-alpha/bin/../conf/zoo.cfg
 Stopping zookeeper ... STOPPED
 [root@centos-linux bin]# zkServer.sh start
 ZooKeeper JMX enabled by default
 Using config: /usr/local/src/zookeeper/zookeeper-3.5.-alpha/bin/../conf/zoo.cfg
 Starting zookeeper ... STARTED

 # 15、重启 zookeeper 服务
 [root@centos-linux bin]# zkServer.sh restart
 ZooKeeper JMX enabled by default
 Using config: /usr/local/src/zookeeper/zookeeper-3.5.-alpha/bin/../conf/zoo.cfg
 ZooKeeper JMX enabled by default
 Using config: /usr/local/src/zookeeper/zookeeper-3.5.-alpha/bin/../conf/zoo.cfg
 Stopping zookeeper ... STOPPED
 ZooKeeper JMX enabled by default
 Using config: /usr/local/src/zookeeper/zookeeper-3.5.-alpha/bin/../conf/zoo.cfg
 Starting zookeeper ... STARTED