CentOS7安装zookeeper集群

集群方案

主机IP            消息端口:通信端口   节点目录/usr/local/下
192.168.1.1 2181    2888:3888   zookeeper
192.168.1.2 2181    2888:3888   zookeeper
192.168.1.3 2181    2888:3888   zookeeper

安装JDK

# 安装JDK
# 配置/etc/profile
vim /etc/profile
    export JAVA_HOME=/usr/local/jdk
    export PATH=$JAVA_HOME/bin:$PATH
    export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
    export JAVA=$JAVA_HOME/bin/java
source /etc/profile

以下操作3台机器同时操作

准备3台虚拟机

IP地址为

192.168.1.1
192.168.1.2
192.168.1.3

新建用户

useradd zookeeper
passwd zookeeper

安装依赖

yum install wget

下载ZooKeeper源码

wget http://apache.fayea.com/zookeeper/stable/zookeeper-3.4.12.tar.gz
tar -zxvf zookeeper-3.4.12.tar.gz
mv zookeeper-3.4.12 /usr/local/zookeeper
cd /usr/local/zookeeper/
mkdir data
mkdir log
chown -R zookeeper.zookeeper data
chown -R zookeeper.zookeeper logs

修改配置文件

# 将/conf目录下的zoo_sample.cfg文件拷贝一份， 命名为为zoo.cfg
cp zoo_sample.cfg zoo.cfg
vim zoo.cfg
    dataDir=/usr/local/zookeeper/data
    dataLogDir=/usr/local/zookeeper/logs
    # 2888 端口号是 zookeeper 服务之间通信的端口。
    # 3888 是 zookeeper 与其他应用程序通信的端口。
    server.0=192.168.1.1:2888:3888
    server.1=192.168.1.2:2888:3888
    server.2=192.168.1.3:2888:3888

新建myid文件

cd /usr/local/zookeeper/data
    * 192.168.1.1机器: echo 0 >> myid
    * 192.168.1.2机器: echo 1 >> myid
    * 192.168.1.3机器: echo 2 >> myid
    # 这里的0,1,2对应zoo.cfg中server.x处的x

编辑.bash_profile

su - zookeeper
vim .bash_profile
    export ZOOKEEPER_HOME=/usr/local/zookeeper
    # zookeeper env
    export PATH=$ZOOKEEPER_HOME/bin:$PATH
source .bash_profile

zookeeper操作

cd /usr/local/zookeeper/bin
vim zkServer.sh
    #在129行增加如下内容，因为脚本里并未读取zoo.cfg中设定的log目录
    ZOO_LOG_DIR=/usr/local/zookeeper/logs
# 启动zk
zkServer.sh start
# 查看状态
zkServer.sh status
# 停止zk
zkServer.sh stop
# 查看日志
tail -f /usr/local/zookeeper/logs/zookeeper.out

设置ZooKeeper开机启动

vim /etc/rc.local
    su - zookeeper -c '/usr/local/zookeeper/bin/zkServer.sh start'

防火墙过滤

firewall-cmd --zone=public --add-port=2181/tcp --permanent
firewall-cmd --zone=public --add-port=2888/tcp --permanent
firewall-cmd --zone=public --add-port=3888/tcp --permanent
firewall-cmd --reload