shell脚本编写主从centos7

shell脚本编写主从centos6
首先安装阿里源好执行expect安装

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

执行之前配好ssh免密
和关闭防火墙
注意改成自己的IP
vim aa.sh

#!/bin/bash
yum -y install mariadb mariadb-server #主安装mysql
sed -i '/0/a\server-id=1' /etc/my.cnf   #sed修改主配置
sed -i '/1/a\log-bin=mysql-bin' /etc/my.cnf
systemctl restart mariadb       #启动mysql
mysql -e "grant all on *.* to he@'%' identified by '123';" #shell mysql授权
mysql -e "flush privileges;"
file=`mysql -e "show master status"|awk '/mysql/{print $1}'` #shell查看mysql二进日志
rz=`mysql -e "show master status"|awk '/mysql/{print $2}'`
yum -y install expect   #安装免交互
#以下属于expect免交互
/usr/bin/expect<<EOF
spawn ssh $2     
set timeout 1000
expect "]#" {send "yum -y install mariadb mariadb-server\n"}  
expect "]#" {send "sed -i '/0/aserver-id=2' /etc/my.cnf\n"}
expect "]#" {send "sed -i '/2/arelay-log=mysql-relay' /etc/my.cnf\n"}
expect "]#" {send "systemctl restart mariadb\n"} 
expect "]#" {send "mysql -e \"change master to master_host='$1',master_user='he',master_password='123',master_log_file='$file',master_log_pos=$rz;\"\n"}
expect "]#" {send "mysql -e 'start slave'\n"}
expect "]#" {send "exit\n"}
expect eof
EOF

sh aa.sh 主参数IP 从参数IP

来源：https://blog.csdn.net/weixin_45697341/article/details/102752855