mysql数据库定时自动备份

新建shell脚本文件bak.sh

命令vim /usr/local/dbbak/bak.sh
编辑内容如下

#!/bin/bash# 数据库备份脚本# author:chinoukin 2017-09-11date=$(date +%Y%m%d)db=jeesiteuser=rootpass=filename=$db'_'$date'.sql'bakpath=/home/dbbak/$dbkeepdays=30echo "mysqldump start... "if [ -e $bakpath ]        then                echo $bakpath is existselse        mkdir -p $bakpath        echo dir $bakpath createdfiif [ -d $bakpath ]        then                mysqldump -u$user -p$pass $db &> $bakpath/$filename                find $bakpath -mtime +$keepdays -name '*.sql' -exec rm -rf {} \;                echo "mysqldump done."fi

修改脚本执行权限

命令：chmod 755 bak.sh

添加至定时任务

命令：crontab -e 编辑内容如下

#每日凌晨3点触发0 3 * * * /usr/local/dbbak/bak.sh