Mysql备份并上传到固定的服务器

第一步，备份mysql

back_mysql_db.sh

#!/bin/bash

# 没有则创建
if [ ! -d "/home/wwwroot/default/mysqlbackups" ];then
        mkdir -p "/home/wwwroot/default/mysqlbackups"
fi

# 备份数据库
mysqldump -uroot -p123456 dbname > /home/wwwroot/default/mysqlbackups/dbname_$(date +%Y%m%dH%M%S).sql

# 只保留3天的数据库
find /home/wwwroot/default/mysqlbackups/ -type f -ctime +3 -exec rm -rf {} ;

第二步，将文件夹scp到服务器

scp_back_to_test.sh
需要安装一下expect

yum install expect

#!/usr/bin/expect

set user root
set password 123456
set dir /home/wwwroot/default/
set ip xxx.xxx.xxx
set files [lrange $argv 0 0]

spawn scp -r ${files} ${user}@${ip}:${dir}
expect {  
    "*yes/no*" { send "yes
"; exp_continue}
    "*password:*" { send "$password
"; exp_continue }
}
interact

tips:默认情况下 10 秒执行命令就会中断,set timeout 120 能够设置执行时长

#!/usr/bin/expect

set user root
set password 123456
set dir /home/wwwroot/default/
set ip xxx.xxx.xxx
set files [lrange $argv 0 0]

#设置时长
set timeout 600

spawn scp -r ${files} ${user}@${ip}:${dir}
expect {  
    "*yes/no*" { send "yes
"; exp_continue}
    "*password:*" { send "$password
"; exp_continue }
}
interact

第三步，配置定时器crontab

00 03 * * * sh /home/cron/back_mysql_db.sh >> /tmp/back_mysql_db.log 2>&1
30 03 * * * /home/cron/scp_back_to_test.sh /home/wwwroot/default/mysqlbackups/ >> /tmp/scp_back_to_test.log 2>&1

每天夜里3点半

第四步， 再来一个定期处理服务器超过三天的sql

clear_old_mysql_db.sh

#!/bin/bash

# 只保留5天的数据库
find /home/wwwroot/default/mysqlbackups/ -type f -ctime +5 -exec rm -rf {} ;

30 3 * * * sh /home/sh/clear_old_mysql_db.sh >> /tmp/clear_old_mysql_db.log 2 >&1