CentOS7.4 上安装 zookeeper-3.4.14 服务

在 CentOS7.4 上安装 zookeeper-3.4.14 服务。

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、下载 zookeeper-3.4.14.tar.gz：

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

4、解压缩 zookeeper-3.4.14.tar.gz：

tar -zxvf zookeeper-3.4.14.tar.gz

5、进入到 /usr/local/services/zookeeper/zookeeper-3.4.14/conf 目录中：

cd zookeeper-3.4.14/conf/

6、复制 zoo_sample.cfg 文件的并命名为为 zoo.cfg：

cp zoo_sample.cfg zoo.cfg

7、用 vim 打开 zoo.cfg 文件并修改其内容为如下：

# 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-3.4.14/data

# 日志文件夹
dataLogDir=/usr/local/services/zookeeper/zookeeper-3.4.14/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

8、保存并关闭 zoo.cfg 文件:

:wq

9、进入到 /usr/local/services/zookeeper/zookeeper-3.4.14/bin 目录中：

cd ../bin/

10、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-3.4.14 config start - 2019-09-08

export ZOOKEEPER_HOME=/usr/local/services/zookeeper/zookeeper-3.4.14/
export PATH=$ZOOKEEPER_HOME/bin:$PATH
export PATH

# idea - zookeeper-3.4.14 config start - 2019-09-08

11、使 /etc/ 目录下的 profile 文件即可生效：

source /etc/profile

12、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-3.4.14/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

13、查询 zookeeper 状态：

zkServer.sh status

14、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-3.4.14/bin/../conf/zoo.cfg
    Stopping zookeeper ... STOPPED

15、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-3.4.14/bin/../conf/zoo.cfg
    ZooKeeper JMX enabled by default
    Using config: /usr/local/services/zookeeper/zookeeper-3.4.14/bin/../conf/zoo.cfg
    Stopping zookeeper ... STOPPED
    ZooKeeper JMX enabled by default
    Using config: /usr/local/services/zookeeper/zookeeper-3.4.14/bin/../conf/zoo.cfg
    Starting zookeeper ... STARTED