shell配置mysql主从

Environment：CentOS7两台主机

　　　　一台做主机，一台做备份机

注意： 首先第一步关闭两台机器的防火墙

主机shell操作：

 #!/bin/bash
 slave_user='zjt'
 slave_passwd=''
 slave_ipaddr='192.168.189.139'
 master_ipaddr='192.168.189.172'
 #配置检测工具
 yum -y install openssh-clients
 #下载mysql mysql相对服务 mariadb
 yum -y install mariadb mariadb-server
 #启动mysql服务
 systemctl start mariadb
 #添加配置文件
 sed -i '10a\server-id=1' /etc/my.cnf
 sed -i '11a\log-bin=mysql-bin' /etc/my.cnf
 sed -i '12a\relay-log=mysql-relay' /etc/my.cnf
 #重启mysql
 systemctl restart mariadb
 #进入mysql，进行用户授权
 mysql -p123 -e "grant replication slave on *.* to'zjt'@'192.168.189.139' identified by '123';"
 #刷新权限
 mysql -p123 -e "flush privileges;"

 #!/bin/bash
 slave_user='zjt'
 slave_passwd=''
 slave_ipaddr='192.168.189.139'
 yum -y install openssh-clients
 #下载mysql mysql相对服务 mariadb
 yum -y install mariadb mariadb-server
 #启动mysql服务
 systemctl start mariadb
 #添加配置文件
 sed -i '10a\server-id=1' /etc/my.cnf
 sed -i '11a\log-bin=mysql-bin' /etc/my.cnf
 sed -i '12a\relay-log=mysql-relay' /etc/my.cnf
 #重启mysql
 systemctl restart mariadb
 #进入mysql，进行用户授权
 mysql -p123 -e "grant replication slave on *.* to'zjt'@'192.168.189.139' identified by '123';"
 #刷新权限
 mysql -p123 -e "flush privileges;"

 ssh root@192.168.189.139 > /dev/null >&
 yum -y install mariadbi mariadb-server
 #查看master表
 master_status=`mysql -p123 -e "show master status;"`
 #打印master表
 echo "$master_status"
 file=`echo "$master_status" | grep "bin" | awk '{print $1}'`
 echo "$file"
 pos=`echo "$master_status" | grep "bin" | awk '{print $2}'`
 echo "$pos"

 sed -i '10a\server-id=2' /etc/my.cnf
 sed -i '11a\log-bin=mysql-bin' /etc/my.cnf
 sed -i '12a\relay-log=mysql-relay' /etc/my.cnf
 systemctl restart mariadb
 mysql -p123 -e "stop slave;"
 mysql -p123 -e "change master to master_host='192.168.189.172',master_user='zjt',master_password='123',master_log_file='$file',master_log_pos=$pos;"
 mysql -p123 -e "start slave;"
 slave_IO=`mysql -p123 -e "show slave status \G;" | grep Yes | wc -l`
 if [ $slave_IO ==  ]; then
         echo "仅输出一个yes！！！"
 elif [ $slave_IO ==  ]; then
         echo "输出两个yes！！！"
 else
         echo "mariadb错误"
 fi