CentOS MySQL自动备份shell脚本

先执行  vim/mysqlBack/back.sh

然后添加以下内容

## 记录日志 

# 以下配置信息请自己修改

mysql_user="root" #MySQL备份用户
mysql_password="pass" #MySQL备份用户的密码
mysql_host="192.168.…………"
mysql_port="3306"
mysql_charset="utf8" #MySQL编码

backup_db_arr=("xxx" "test") #要备份的数据库名称，多个用空格分开隔开 如("db1" "db2" "db3")
backup_location=/mysqlBack/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=5  #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=$backup_location/$backup_Ymd #备份文件夹全路径
welcome_msg="Welcome to use MySQL backup tools!" #欢迎语

# 连接到mysql数据库，无法连接则备份退出
mysql -h$mysql_host -P$mysql_port -u$mysql_user -p$mysql_password <<end
use mysql;
select host,user from user where user='root' and host='39.106.27.114';
exit
end
 
flag=`echo $?`
if [ $flag != "0" ]; then
echo "ERROR:Can't connect mysql server! backup stop!"  
exit
else
echo "MySQL connect ok! Please wait......"

# 判断有没有定义备份的数据库，如果定义则开始备份，否则退出备份
if [ "$backup_db_arr" != "" ];then
#dbnames=$(cut -d ',' -f1-5 $backup_database)
#echo "arr is (${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 $backup_dir/$dbname-$backup_time.sql.gz"  
else
echo "database $dbname backup fail!"  
 
done
else
echo "ERROR:No database to backup! backup stop" 
exit
fi

# 如果开启了删除过期备份，则进行删除操作
if [ "$expire_backup_delete" == "ON" -a "$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

保存

chmod 600 /mysqlBack/back.sh

chmod +x /mysqlBack/back.sh

然后添加定时执行

crontab -e

添加以下内容

00 03 * * 1 /mysqlBack/back.sh

保存

重启 crontab 服务

service crond restart