linux 上使用mydumper 定时执行MySQL备份和还原

一：定时备份数据库 backup.sh 内容：

（我写的第一个脚本（本人是开发，脚本内容不够优雅，主要学习总结）

1）指定HOST备份脚本backup.sh ，数据库和备份能够不在同台机器

#!/bin/sh
echo "<== [author:DY] MySQL备份脚本启动中...请勿中断！"
source /etc/profile

HOST="172.xx.xx.xx"
PWD="xxxxxx"

BACKUP_PATH="/opt/backup-auto/"
if [ ! -d "$BACKUP_PATH" ];then
    mkdir "$BACKUP_PATH"
fi

ARRAY_DB=$(mysql -u root -h ${HOST} -p${PWD} -e "SHOW DATABASES"|awk 'NR>1') 
#echo "即将备份的数据库包含:$ARRAY_DB"

for db in ${ARRAY_DB[@]}
do
    if [ ! -d "$BACKUP_PATH${db}" ];then
       mkdir "$BACKUP_PATH${db}"
    fi
    
    if [ "information_schema" = ${db} ];then
	echo "跳过${db}"
    else
    	/usr/local/mydumper-0.9.1/mydumper -u root -p $PWD -h $HOST -B ${db} -c -o $BACKUP_PATH${db}/`date +%Y%m%d%H%M%S`
	echo "[${db}] 备份完成"
    fi
done

echo "<==[author:DY] $HOST MySQL 备份完成 ==>"

 

二：每隔30分钟分钟执行一次

(注意这里是逻辑备份，生产环境建议选择天天夜间备份一次) 这里是全量备份

#crontab -e 中设置执行策略和执行脚本
*/30 * * * * /bin/sh /opt/backup.sh

#service crond restart 重启定时任务服务

三：恢复数据库脚本reback.sh

#./reback.sh all  //恢复全部数据库

#./reback.sh [数据库名]  //恢复指定数据库

1）恢复到指定机器上 reback.sh

#!/bin/sh
echo "<== [author:DY] MySQL备份恢复中...请勿中断!(默认从最新的一次备份中恢复)"
source /etc/profile

HOST="172.30.xx.xx"
PWD="DYxxxxx"

BACKUP_PATH="/opt/backup-auto/"
DB_ARRAY=`ls $BACKUP_PATH`

if echo "${DB_ARRAY[@]}" | grep -w "$1" &>/dev/null;
   then echo "";
elif [ "all" = $1 ];
   then echo "";
else
    echo $"Ukonwn command: $1 ; it shoud be a db name" 
    exit 1
fi

for dir in ${DB_ARRAY}
do
    NEW_BACKUP_PATH=`cd $BACKUP_PATH${dir} && ls | tail -1`
    case "$1" in
    	"${dir}")
         	/usr/local/mydumper-0.9.1/myloader -u root -p $PWD -h $HOST -B ${dir} -o -d $BACKUP_PATH${dir}/$NEW_BACKUP_PATH
		echo "${dir} 数据库还原成功"
    	;;
    	"all")

             if [ "mysql" = ${dir} -o "sys" = ${dir} -o "performance_schema" = ${dir} -o "information_schema" = ${dir} ];then
		echo "跳过 ${dir}"
   	     else
        	/usr/local/mydumper-0.9.1/myloader -u root -p $PWD -h $HOST -B ${dir} -o -d $BACKUP_PATH${dir}/$NEW_BACKUP_PATH
                echo "${dir}用户数据库还原成功"
	     fi
    	;;
    esac
done

echo "<== [author:DY] $HOST MySQL ${1} 数据表恢复完成 ==>"