Linux下的MySQL自动备份脚本

写了个Linux下的MySQL备份脚本这是第一版，只支持备份一个数据库，每天晚上2点用定时器把这个脚本跑一下就自动备份好了。后续会做可支持备份多个数据库，备份失败短信发送到手机，自动清除过期备份。

#!/bin/bash
#Script:backup_mysql
#Version:Release 1.0
#author:www.dba-china.com
#date:2011-10-26
backup_time=`date +%Y%m%d%H%M` #定义备份详细时间
backup_Ymd=`date +%Y%m%d` #定义备份目录中的年月日时间
backup_7ago=`date -d '7 days ago' +%Y%m%d` #七天之前的日期
backup_dir=/backup/mysql/$backup_Ymd #备份文件夹全路径
backup_database="dba-china" #要备份的数据库名称
mysql_user="root"
mysql_password="root"
#mysql_host="localhost"
#mysql_port="3306"
#判断MYSQL是否启动,mysql没有启动则备份退出
mysql_ps=`ps -ef |grep mysql |wc -l`
mysql_listen=`netstat -an |grep LISTEN |grep $mysql_port|wc -l`
if [ [$mysql_ps == 0] -o [$mysql_listen == 0] ]; then
echo "ERROR:MySQL is not running! backup stop!"
exit;
else
echo "MySQL running ok!"
fi
#连接到mysql数据库，无法连接则备份退出
mysql -u$mysql_user -p$mysql_password <
use mysql;
select host,user from user where user='root' and host='localhost';
exit
end
flag=`echo $?`
if [ $flag != "0" ]; then
echo "error:Can't connect mysql server! backup stoped!"
exit;
else
echo "MySQL connect ok! Backup start......"
#db=`echo $backup_database |cut -d ',' -f1`
db=$backup_database
if [ $db == '' ];then
echo "ERROR:no database to backup!"
else
echo "database $db backup start..."
`mkdir -p $backup_dir`
`mysqldump -u$mysql_user -p$mysql_password $db > $backup_dir/$db$backup_time.sql`
echo "database $db backup success!"
fi
fi