ZooKeeper安装实例
获取zookeeper-3.4.9.tar.gz安装包：1、创建 /usr/local/services/zookeeper 文件夹：
# mkdir -p /usr/local/services/zookeeper
2、进入到 /usr/local/services/zookeeper 目录中：
# cd /usr/local/services/zookeeper
3、解压缩 zookeeper-3.4.9.tar.gz：
拷贝文件zookeeper-3.4.9.tar.gz至/home/nriet/software目录下
# cp zookeeper-3.4.9.tar.gz/usr/local/services/zookeeper/
# tar -zxvf zookeeper-3.4.9.tar.gz
4、进入到/usr/local/services/zookeeper/zookeeper-3.4.9/conf 目录中：
#cd zookeeper-3.4.9/conf/
5、复制 zoo_sample.cfg 文件的并命名为为 zoo.cfg：
# cp zoo_sample.cfg zoo.cfg
6、用 vim 打开zoo.cfg 文件并修改其内容为如下：
# The number ofmilliseconds of each tick
# zookeeper 定义的基准时间间隔，单位：毫秒
tickTime=2000
# The number ofticks that the initial
#synchronization phase can take
initLimit=10
# The number ofticks that can pass between
# sending arequest and getting an acknowledgement
syncLimit=5
# the directorywhere the snapshot is stored.
# do not use/tmp for storage, /tmp here is just
# examplesakes.
#dataDir=/tmp/zookeeper
# 数据文件夹
dataDir=/usr/local/services/zookeeper/zookeeper-3.4.9/data
# 日志文件夹
dataLogDir=/usr/local/services/zookeeper/zookeeper-3.4.9/logs
# the port atwhich the clients will connect
# 客户端访问 zookeeper 的端口号
clientPort=2181
# the maximumnumber of client connections.
# increase thisif you need to handle more clients
#maxClientCnxns=60
#
# Be sure toread the maintenance section of the
# administratorguide before turning on autopurge.
#
#http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
# The number ofsnapshots to retain in dataDir
#autopurge.snapRetainCount=3
# Purge taskinterval in hours
# Set to"0" to disable auto purge feature
#autopurge.purgeInterval=1
7、保存并关闭 zoo.cfg 文件:
8、进入到/usr/local/services/zookeeper/zookeeper-3.4.9/bin 目录中：
9、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：
# idea -zookeeper-3.4.9 config start - 2017-11-01
export ZOOKEEPER_HOME=/usr/local/services/zookeeper/zookeeper-3.4.9/
export PATH=$ZOOKEEPER_HOME/bin:$PATH
export PATH
# idea -zookeeper-3.4.9 config start - 2017-11-01
10、使 /etc/ 目录下的profile 文件即可生效：
# source /etc/profile
11、启动 zookeeper 服务：
# zkServer.sh start
如打印如下信息则表明启动成功：
ZooKeeper JMXenabled by default
Using config:/usr/local/services/zookeeper/zookeeper-3.4.9/bin/../conf/zoo.cfg
Startingzookeeper ... STARTED
12、查询 zookeeper 状态：
# zkServer.sh status
https://s5.运维网.com/oss/201711/20/d8df2a3cbd5501b7517c1805ae9b4c39.png-wh_500x0-wm_3-wmp_4-s_3858468040.png
13、关闭 zookeeper 服务：
# zkServer.sh stop
如打印如下信息则表明成功关闭：
https://s5.运维网.com/oss/201711/20/38b8e9b38da685f7abdeff4da866e73a.png-wh_500x0-wm_3-wmp_4-s_4079046714.png
14、重启 zookeeper 服务：
# zkServer.sh restart
如打印如下信息则表明重启成功：
https://s5.运维网.com/oss/201711/20/4fdad85889de7f803b1c0f8e983ba75d.png-wh_500x0-wm_3-wmp_4-s_1606356152.png
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