centos7安装zookeeper

1.官网或 wget 下载 zookeeper-3.4.14.tar.gz 包

　　cd /home/tar

　　wget https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/stable/zookeeper-3.4.14.tar.gz

2.解压 zookeeper-3.4.14.tar.gz 包

　　tar -zxvf zookeeper-3.4.14.tar.gz

　　mv ./zookeeper-3.4.14 /usr/local/

3.编辑 zoo.cfg 配置文件

　　cd /usr/local/zookeeper-3.4.14/conf

　　cp zoo_sample.cfg zoo.cfg

　　vi ./zoo.cfg

　　修改内容为如下：

# The number of milliseconds of each tick

# zookeeper 定义的基准时间间隔，单位：毫秒
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=/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 at which the clients will connect
# 客户端访问 zookeeper 的端口号
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

　　保存并关闭 zoo.cfg 文件

4.配置环境变量

　　编辑 profile 文件

　　　　vi /etc/profile

　　追加如下内容

# set zookeeper env
export ZOOKEEPER_HOME=/usr/local/zookeeper-3.4.14/
export PATH=$ZOOKEEPER_HOME/bin:$PATH
export PATH

　　使其生效

　　　　source /etc/profile

5.启动服务

　　zkServer.sh start

　　若打印一下信息表示启动成功：

　　　　ZooKeeper JMX enabled by default
　　　　Using config: /usr/local/zookeeper-3.4.14/bin/../conf/zoo.cfg
　　　　Starting zookeeper ... STARTED

6.常用命令

　　zkServer.sh status 查看状态

　　zkServer.sh stop 停止服务

　　zkServer.sh restart 重启服务

7.集群配置

 　　待续

8.设置开机自启

 　　待续

参考文章：

　　https://www.cnblogs.com/huangjianping/p/8012580.html

　　https://blog.csdn.net/weixin_42231507/article/details/81154708

　　https://www.cnblogs.com/dayangcong/p/6368406.html