linux 上使用mydumper 定時執行MySQL備份和還原

一：定時備份數據庫 backup.sh 內容：

（我寫的第一個腳本（本人是開發，腳本內容不夠優雅，主要學習總結）

1）指定HOST備份腳本backup.sh ，數據庫和備份能夠不在同臺機器

#!/bin/sh
echo "<== [author:DY] MySQL備份腳本啓動中...請勿中斷！"
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 "即將備份的數據庫包含:$ARRAY_DB"

for db in ${ARRAY_DB[@]}
do
    if [ ! -d "$BACKUP_PATH${db}" ];then
       mkdir "$BACKUP_PATH${db}"
    fi
    
    if [ "information_schema" = ${db} ];then
	echo "跳過${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}] 備份完成"
    fi
done

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

 

二：每隔30分鐘分鐘執行一次

(注意這裏是邏輯備份，生產環境建議選擇天天夜間備份一次) 這裏是全量備份

#crontab -e 中設置執行策略和執行腳本
*/30 * * * * /bin/sh /opt/backup.sh

#service crond restart 重啓定時任務服務

三：恢復數據庫腳本reback.sh

#./reback.sh all  //恢復全部數據庫

#./reback.sh [數據庫名]  //恢復指定數據庫

1）恢復到指定機器上 reback.sh

#!/bin/sh
echo "<== [author:DY] MySQL備份恢復中...請勿中斷!(默認從最新的一次備份中恢復)"
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} 數據庫還原成功"
    	;;
    	"all")

             if [ "mysql" = ${dir} -o "sys" = ${dir} -o "performance_schema" = ${dir} -o "information_schema" = ${dir} ];then
		echo "跳過 ${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}用戶數據庫還原成功"
	     fi
    	;;
    esac
done

echo "<== [author:DY] $HOST MySQL ${1} 數據表恢復完成 ==>"