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 $mysql_port|wc -l
if [ [$mysq{l}_{p}s==0]-o[$mysql_listen == 0] ]; then
echo “ERROR:MySQL is not running! backup stop!”
exit
else
echo $welcome_msg
fi

#备份指定数据库中数据
mysqldump -h$mysq{l}_{h}ost-P$mysql_port -u$mysq{l}_{u}ser-p$mysql_password -B msg_manager> $backu{p}_{d}ir/ms{g}_{m}anager-$backup_time.sql
flag=echo $?
if [ $flag == “0” ];then
echo “database msg_manager success backup to $backu{p}_{d}ir/ms{g}_{m}anager-$backup_time.sql”
else
echo “database msg_manager backup fail!”
fi

#删除过期数据
if [ “$expir{e}_{b}acku{p}_{d}elete"=="ON"-a"$backup_location” != “” ];then
find $backup_location/ -type f -mtime +$expire_days | xargs rm -rf
echo “Expired backup data delete complete!”
fi

添加定时任务

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

service crond restart