通过自动化脚本安装以及配置Zookeeper

• zookeeper_boot.sh
  #!/bin/bash

  SERVERS="master slave1 slave2"
  PASSWORD=nn1234
  
  auto_ssh_copy_id(){
       expect -c "set timeout -1;
            spawn ssh-copy-id $1;
            expect {
                    *(yes/no)* {send -- yes\r;exp_continue;}
                    *password* {send -- $2\r;exp_continue;}
                    eof        {exit 0;}                    
            }";
  }
  
  ssh_copy_id_to_all(){
      for SERVER in $SERVERS
      do
          auto_ssh_copy_id $SERVER $PASSWORD
      done
  }
  
  ssh_copy_id_to_all
  
  sid=1
  
  for SERVER in $SERVERS
  do
    scp zookeeper_install.sh root@$SERVER:/root
    ssh root@$SERVER /root/zookeeper_install.sh $sid  #sid是设置给myid的值
    let sid++
  done
  

• zookeeper_install.sh

  #!/bin/bash
  
  PACKAGE_SERVER=192.168.1.10
  BASE_DIR=/usr/app/zookeeper-3.4.10
  
  wget -P /usr/app/ $PACKAGE_SERVER/file/zookeeper-3.4.10.tar.gz
  cd /usr/app/
  tar -zxvf zookeeper-3.4.10.tar.gz
  rm -rf zookeeper-3.4.10.tar.gz
  cp $BASE_DIR/conf/zoo_sample.cfg $BASE_DIR/conf/zoo.cfg
  sed -i 's/\/tmp\/zookeeper/\/usr\/app\/zookeeper-3.4.10\/zoo_data/' $BASE_DIR/conf/zoo.cfg  # 修改dataDir目录
  # 配置集群节点
  cat >> $BASE_DIR/conf/zoo.cfg << EOF
  server.1=master:2888:3888   #2888是leader与flower之间的访问端口(心跳端口)，3888是投票选举leader端口(数据端口)
  server.2=slave1:2888:3888
  server.3=slave2:2888:3888
  EOF
  
  mkdir $BASE_DIR/zoo_data/
  cd $BASE_DIR/zoo_data/
  echo $1 > myid  # 通过参数的方式来配置myid
  
  rm -f ~/zookeeper_install.sh
  

• zkServer启动脚本zkServerStart.sh
  #!/bin/bash

  #  export A=1  定义的变量，会对自己所在的shell进程及其子进程生效
  # B=1 定义的变量，只对自己所在的shell进程生效
  # 在script.sh中定义的变量，在当前登陆的shell进程中 source script.sh时，脚本中定>义的变量也会进入当前登陆的进程
  
  SERVERS="master slave1 slave2"
  
  for server in $SERVERS
  do
    echo "start zkServer:  $server"
    ssh root@$server "source /etc/profile;/usr/app/zookeeper-3.4.10/bin/zkServer.sh start"
  done