centos7 安装zookeeper3.4.12

1、下载zookeeper安装包 http://apache.fayea.com/zookeeper/zookeeper-3.4.12/

2、使用ftp上次至服务器

3、解压二进制包 zookeeper-3.4.12.tar.gz 得到zookeeper-3.4.12文件夹

 4、进入到 /home/wangyong/zookeeper/zookeeper-3.4.12/conf 目录中：
    cd /home/wangyong/zookeeper/zookeeper-3.4.12/conf

5、复制 zoo_sample.cfg 文件的并命名为为 zoo.cfg：
    cp zoo_sample.cfg zoo.cfg

6、创建打他文件夹 mkdir /home/wangyong/zookeeper/data/zookeeper-3.4.12/data

7、 用 vim 打开 zoo.cfg 文件

并修改其内容为如下：mkdir /home/wangyong/zookeeper/data/zookeeper-3.4.12/data

# The number of milliseconds of each tick
tickTime=2000
# The number of ticks that the initial 
# synchronization phase can take
initLimit=10
# The number of ticks that can pass between 
# sending a request and getting an acknowledgement
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just 
# example sakes.
dataDir=/home/wangyong/zookeeper/data/zookeeper-3.4.12/data
# the port at which the clients will connect
clientPort=2181
# the maximum number of client connections.
# increase this if you need to handle more clients
#maxClientCnxns=60
#
# Be sure to read the maintenance section of the 
# administrator guide before turning on autopurge.
#
# http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
# The number of snapshots to retain in dataDir
#autopurge.snapRetainCount=3
# Purge task interval in hours
# Set to "0" to disable auto purge feature
#autopurge.purgeInterval=1

dataDir为6步创建的文件夹

8、配置环境变量用 vim 打开 /etc/ 目录下的配置文件 profile：

vim /etc/profile

并在其尾部追加如下内容：

export ZOOKEEPER_HOME=/usr/local/services/zookeeper/zookeeper-3.4.12/
export PATH=$ZOOKEEPER_HOME/bin:$PATH
export PATH

9、使 /etc/ 目录下的 profile 文件即可生效：
    source /etc/profile

10、启动 zookeeper 服务：   

zkServer.sh start   

如打印如下信息则表明启动成功：   

ZooKeeper JMX enabled by default   
Using config: /usr/local/services/zookeeper/zookeeper-3.4.12/bin/../conf/zoo.cfg   
Starting zookeeper ... STARTED

11、查询 zookeeper 状态：
    zkServer.sh status

12、关闭 zookeeper 服务：   

zkServer.sh stop   

如打印如下信息则表明成功关闭：   

ZooKeeper JMX enabled by default    
Using config: /usr/local/services/zookeeper/zookeeper-3.4.12/bin/../conf/zoo.cfg    
Stopping zookeeper ... STOPPED

13、重启 zookeeper 服务：   

zkServer.sh restart   

如打印如下信息则表明重启成功：   

ZooKeeper JMX enabled by default    
Using config: /usr/local/services/zookeeper/zookeeper-3.4.12/bin/../conf/zoo.cfg    ZooKeeper JMX enabled by default    
Using config: /usr/local/services/zookeeper/zookeeper-3.4.12/bin/../conf/zoo.cfg    
Stopping zookeeper ... STOPPED    
ZooKeeper JMX enabled by default    
Using config: /usr/local/services/zookeeper/zookeeper-3.4.12/bin/../conf/zoo.cfg    
Starting zookeeper ... STARTED