mysql数据库自动备份

来源：mysql自动备份脚本

1.新建shell脚本

vi /opt/mysqlBackup.sh #!/bin/bash #以下配置信息请自己修改 mysql_user=“USER” #MySQL备份用户 mysql_password=“PASSWORD” #MySQL备份用户的密码 mysql_host=“localhost” mysql_port=“3306” mysql_charset=“utf8” #MySQL编码 backup_db_arr=(“db1” “db2”) #要备份的数据库名称，多个用空格分开隔开 如(“db1” “db2” “db3”) backup_location=/opt/mysql #备份数据存放位置，末尾请不要带"/",此项可以保持默认，程序会自动创建文件夹 expire_backup_delete=“ON” #是否开启过期备份删除 ON为开启 OFF为关闭 expire_days=3 #过期时间天数 默认为三天，此项只有在expire_backup_delete开启时有效 #本行开始以下不需要修改 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_3ago=date -d '3 days ago' +%Y-%m-%d #3天之前的日期 backup_dir=$backu{p}_{l}ocation/$backup_Ymd #备份文件夹全路径 welcome_msg=“Welcome to use MySQL backup tools!” #欢迎语 #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 $mysql_port|wc -l if [ [$mysq{l}_{p}s==0]-o[$mysql_listen == 0] ]; then echo “ERROR:MySQL is not running! backup stop!” exit else echo KaTeX parse error: Expected 'EOF', got '#' at position 16: welcome_msg fi #̲连接到mysql数据库，无法连…mysql_host -P$mysq{l}_{p}ort-u$mysql_user -p$mysql_password <<end use mysql; select host,user from user where user=‘root’ and host=‘localhost’; exit end flag=echo $? if [ KaTeX parse error: Expected 'EOF', got '#' at position 128: …se wait......" #̲判断有没有定义备份的数据库，如…backup_db_arr" != “” ];then #dbnames=$(cut -d ‘,’ -f1-5 KaTeX parse error: Expected 'EOF', got '#' at position 18: …ckup_database) #̲echo "arr is ({backup_db_arr[@]})" for dbname in ${backup_db_arr[@]} do echo “database $dbname backup start…” mkdir -p $backup_dir mysqldump -h$mysql_host -P$mysql_port -u$mysql_user -p$mysql_password $dbname --default-character-set=$mysql_charset | gzip > $backup_dir/$dbname-$backup_time.sql.gz flag=echo $? if [ $flag == “0” ];then echo “database $dbname success backup to $backu{p}_{d}ir/$dbname-$backup_time.sql.gz” else echo “database KaTeX parse error: Expected 'EOF', got '#' at position 92: … stop" exit fi #̲如果开启了删除过期备份，则进行…expire_backup_delete” == “ON” -a “$backup_location” != “” ];then #find $backup_location/ -type d -o -type f -ctime +$expire_days -exec rm -rf {} \; find $backup_location/ -type d -mtime +$expire_days | xargs rm -rf echo “Expired backup data delete complete!” fi echo “All database backup success! Thank you!” exit fi

2、修改shell脚本属性，赋予执行权限

[root@user ~]# chmod +x /opt/mysqlBackup.sh

3、手动执行脚本

[root@user ~]# cd /opt [root@user ~]# ./mysqlBackup.sh

4、定时执行脚本

[root@user ~]# crontab -e 添加 00 03 * * * /opt/mysqlBackup.sh #表示三天执行一次，更多的任务定时器可参照Linux添加shell（.sh）脚本并添加定时任务 然后保存退出