Zookeeper搭建

1.下载zookeeper安装包

2.集群规划

在hadoop102、hadoop103和hadoop104三个节点上部署Zookeeper。

3.解压安装

tar -zxvf zookeeper-3.5.7.tar.gz -C /opt/module/

同步/opt/module/zookeeper目录内容到hadoop103、hadoop104

mv apache-zookeeper-3.5.7-bin/ zookeeper
#改个简单的名字

 xsync zookeeper/

4.配置环境变量并同步

sudo vim /etc/profile.d/my_env.sh

##ZOOKEEPER_HOME
export ZOOKEEPER_HOME=/opt/module/zookeeper
export PATH=$PATH:$ZOOKEEPER_HOME/bin

 sudo /home/atguigu/bin/xsync /etc/profile.d/my_env.sh

5.修改配置文件

将/opt/module/zookeeper/conf这个路径下的zoo_sample.cfg修改为zoo.cfg；

mv zoo_sample.cfg zoo.cfg

# The number of milliseconds of each tick
tickTime=2000 #zookeeper每两秒响应一次
# The number of ticks that the initial 
# synchronization phase can take
initLimit=10  #zookeeper数据全局一致，启动时全部节点同步，持续时间10个tick 20秒
# The number of ticks that can pass between 
# sending a request and getting an acknowledgement
syncLimit=5   #发出一个请求后，5tick内响应不算超时
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just 
# example sakes. #存储zookeeper快照的位置，不要用默认的/tmp/zookeeper 做存储，这只是一个例子
dataDir=/opt/module/zookeeper/zkData 
# the port at which the clients will connect
clientPort=2181 #连接zookeeper的端口
# the maximum number of client connections.
# increase this if you need to handle more clients
#maxClientCnxns=60 #最多连接多少个客户端
#
# 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  #zookeeper快照最多存储几个
# Purge task interval in hours
# Set to "0" to disable auto purge feature
#autopurge.purgeInterval=1   #自动删除
server.2=hadoop102:2888:3888 #2888选举端口 #3888服务端口
server.3=hadoop103:2888:3888
server.4=hadoop104:2888:3888                           

修改dataDir=/opt/module/zookeeper/zkData 

添加

server.2=hadoop102:2888:3888 
server.3=hadoop103:2888:3888
server.4=hadoop104:2888:3888 

6.设置zookeeper集群myid配置服务器编号

在/opt/module/zookeeper/目录下创建zkData

mkdir -p zkData

在/opt/module/zookeeper/zkData目录下创建一个myid的文件

touch myid

编辑myid文件

vim myid

在文件中添加与server对应的编号：

2

7.同步zookeeper到其它节点

 xsync /opt/module/zookeeper/

8.修改其它节点的myid到对应的server

hadoop103 的 myid 修改为3  echo 3 > $ZOOKEEPER_HOME/zkData/myid

hadoop104 的 myid 修改为4  echo 4 > $ZOOKEEPER_HOME/zkData/myid

9.启动zookeeper

zkServer.sh start

zookeeper群起脚本

cd /home/atguigu/bin

vim myzookeeper.sh

#!/bin/bash

if [ $# -lt 1 ]
then
    echo "No Args Input..."
    exit ;
fi
case $1 in
"start"){
   for i in hadoop102 hadoop103 hadoop104
   do
                 echo "----------启动$i zk----------"
                 ssh $i "/opt/module/zookeeper/bin/zkServer.sh start"
   done
};;
"stop"){
   for i in hadoop102 hadoop103 hadoop104
   do
                echo "----------关闭$i zk----------"
                ssh $i "/opt/module/zookeeper/bin/zkServer.sh stop"
   done
};;
"status"){
   for i in hadoop102 hadoop103 hadoop104
   do
                 echo "----------查看$i zk----------"
                ssh $i "/opt/module/zookeeper/bin/zkServer.sh status"
   done
};;
esac

更改权限

chmod +x myzookeeper.sh

分发脚本

xsync /home/atguigu/bin/