备份脚本

#!/bin/bash

#author cheng

#mysql数据自动备份

mysql_user="root"

mysql_password="passwprd"

mysql_host="localhost"

mysql_port="3306"

mysql_charset="utf8mb4"

#备份文件存放地址(根据实际情况填写)

backup_location=/usr/cheng/msg_manager/sql

#是否删除过期数据

expire_backup_delete="ON"

#过期时间设置

expire_days=7

backup_time=date +%Y%m%d%H%M

backup_dir=$backup_location

welcome_msg="Welcome to use MySQL backup tools!"

#判断mysql实例是否正常运行

mysql_ps=ps -ef |grep mysql |wc -l

mysql_listen=netstat -an |grep LISTEN |grep $mysql_port|wc -l

if $\[ m y s q l p s = = 0$ − o $mysql_ps == 0$ -o $mysqlps==0$ −o $mysql_listen == 0$ ]; then

echo "ERROR:MySQL is not running! backup stop!"

exit

else

echo $welcome_msg

#备份指定数据库中数据

mysqldump -h m y s q l h o s t − P mysql_host -P mysqlhost−Pmysql_port -u m y s q l u s e r − p mysql_user -p mysqluser−pmysql_password -B msg_manager> b a c k u p d i r / m s g m a n a g e r − backup_dir/msg_manager- backupdir/msgmanager−backup_time.sql

flag=echo $?

if $$flag == "0"$ ;then

echo "database msg_manager success backup to b a c k u p d i r / m s g m a n a g e r − backup_dir/msg_manager- backupdir/msgmanager−backup_time.sql"

else

echo "database msg_manager backup fail!"

#删除过期数据

if $" e x p i r e b a c k u p d e l e t e " = = " O N " - a " expire_backup_delete" == "ON" -a " expirebackupdelete"=="ON"-a"backup_location" != ""$ ;then
find $backup_location/ -type f -mtime +$expire_days | xargs rm -rf

echo "Expired backup data delete complete!"

添加定时任务

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crontab -e
# 添加定时任务(每天12:50以及23:50执行备份操作)
50 12,23 * * * /usr/cheng/msg_manager/sql/sh/mysql_backup.sh >> /usr/cheng/msg_manager/sql/sh/exec.log 2>> /usr/cheng/msg_manager/sql/sh/exec_err.log

重启定时任务服务

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service crond restart