CentOS6 上安装 zookeeper-3.4.10 服务

参考两篇文章:

zookeeper-3.4.10的安装配置:   https://www.jianshu.com/p/5a4d7390bbfd

Zookeeper3.4.10详解和安装:    https://blog.csdn.net/qq_32642039/article/details/80887823

SpringBoot+Dubbo+Zookeeper:  https://blog.csdn.net/zekeTao/article/details/80312686

一、建立 /usr/local/services/zookeeper 文件夹：

mkdir -p /usr/local/services/zookeeper

二、进入到 /usr/local/services/zookeeper 目录中：

cd /usr/local/services/zookeeper

三、下载 zookeeper-3.4.10.tar.gz：

wget http://mirror.bit.edu.cn/apache/zookeeper/zookeeper-3.4.10/zookeeper-3.4.10.tar.gz

四、解压缩 zookeeper-3.4.10.tar.gz：

tar -zxvf zookeeper-3.4.10.tar.gz

五、进入到 /usr/local/services/zookeeper/zookeeper-3.4.10/conf 目录中：

cd zookeeper-3.4.10/conf/

六、复制 zoo_sample.cfg 文件的并命名为为 zoo.cfg：

cp zoo_sample.cfg zoo.cfg

七、用 vim 打开 zoo.cfg 文件并修改其内容为以下：

# 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-3.4.10/data

    # 日志文件夹
    dataLogDir=/usr/local/services/zookeeper/zookeeper-3.4.10/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

八、保存并关闭 zoo.cfg 文件:

:wq!

九、进入到 /usr/local/services/zookeeper/zookeeper-3.4.10/bin 目录中：

cd ../bin/

十、用 vim 打开 /etc/ 目录下的配置文件 profile：

vim /etc/profile

并在其尾部追加以下内容：

export ZOOKEEPER_HOME=/usr/local/services/zookeeper/zookeeper-3.4.10/
export PATH=$ZOOKEEPER_HOME/bin:$PATH
export PATH

十一、使 /etc/ 目录下的 profile 文件便可生效：

source /etc/profile

十二、启动 zookeeper 服务：

zkServer.sh start

如打印以下信息则代表启动成功：
    ZooKeeper JMX enabled by default
    Using config: /usr/local/services/zookeeper/zookeeper-3.4.10/bin/../conf/zoo.cfg
    Starting zookeeper ... STARTED

1三、查询 zookeeper 状态：

zkServer.sh status

1四、关闭 zookeeper 服务：

zkServer.sh stop

如打印以下信息则代表成功关闭：
    ZooKeeper JMX enabled by default
    Using config: /usr/local/services/zookeeper/zookeeper-3.4.10/bin/../conf/zoo.cfg
    Stopping zookeeper ... STOPPED

1五、重启 zookeeper 服务：

zkServer.sh restart

如打印以下信息则代表重启成功：     ZooKeeper JMX enabled by default     Using config: /usr/local/services/zookeeper/zookeeper-3.4.10/bin/../conf/zoo.cfg     ZooKeeper JMX enabled by default     Using config: /usr/local/services/zookeeper/zookeeper-3.4.10/bin/../conf/zoo.cfg     Stopping zookeeper ... STOPPED     ZooKeeper JMX enabled by default     Using config: /usr/local/services/zookeeper/zookeeper-3.4.10/bin/../conf/zoo.cfg     Starting zookeeper ... STARTED ---------------------