備份腳本
#!/bin/bash
#Author pandh
MAXIMUM_BACKUP_FILES=10 #最大備份檔案數
BACKUP_FOLDERNAME=/xx/xx/ #資料庫備份檔案的主目錄
DB_HOSTNAME="xxx" #mysql所在主機的主機名
DB_USERNAME="xxx" #mysql登入使用者名
DB_PASSWORD="xxx" #mysql登入密碼
DB_PORT=xxx #mysql端口
COMMON_DUMP="/usr/local/mysql/bin/mysqldump -h ${DB_HOSTNAME} --port ${DB_PORT} -u${DB_USERNAME} -p${DB_PASSWORD}"
DATABASES=(
"xxx" #備份的資料庫名
)
#=========
echo "Bash Database Backup Tool"
#CURRENT_DATE=$(date +%F)
CURRENT_DATE=$(date +%F) #定義目前日期為變量
BACKUP_FOLDER="${BACKUP_FOLDERNAME}${CURRENT_DATE}" #存放資料庫備份檔案的目錄
mkdir $BACKUP_FOLDER #建立資料庫備份檔案目錄
#統計需要被備份的資料庫
count=0
while [ "x${DATABASES[count]}" != "x" ];do
count=$(( count + 1 ))
done
echo "[+] ${count} databases will be backuped..."
#循環這個資料庫名稱清單然後逐個備份這些資料庫
for DATABASE in ${DATABASES[@]};do
echo "[+] Mysql-Dumping: ${DATABASE}"
echo -n " Began: ";echo $(date)
if $(${COMMON_DUMP} ${DATABASE} > "${BACKUP_FOLDER}/${DATABASE}.sql")&&
<span style="white-space:pre"> </span>$(${COMMON_DUMP} ${DATABASE} --triggers --no-create-info --no-data --no-create-db --skip-opt> "${BACKUP_FOLDER}/${DATABASE}_trigger.sql")&&
<span style="white-space:pre"> </span>$(${COMMON_DUMP} ${DATABASE} --routines --no-create-info --no-data --no-create-db --skip-opt --skip-triggers> "${BACKUP_FOLDER}/${DATABASE}_proc_function.sql")&&
<span style="white-space:pre"> </span>$(${COMMON_DUMP} ${DATABASE} --events --no-create-info --no-data --no-create-db --skip-opt --skip-triggers> "${BACKUP_FOLDER}/${DATABASE}_event.sql");then
echo " Dumped successfully!"
else
echo " Failed dumping this database!"
fi
echo -n " Finished: ";echo $(date)
done
echo
echo "[+] Packaging and compressing the backup folder..."
tar -cv ${BACKUP_FOLDER} | bzip2 > ${BACKUP_FOLDER}.tar.bz2 && rm -rf $BACKUP_FOLDER
BACKUP_FILES_MADE=$(ls -l ${BACKUP_FOLDERNAME}*.tar.bz2 | wc -l)
BACKUP_FILES_MADE=$(( $BACKUP_FILES_MADE - 0 ))
#把已經完成的備份檔案數的結果轉換成整數數字
echo
echo "[+] There are ${BACKUP_FILES_MADE} backup files actually."
#判斷如果已經完成的備份檔案數比最大備份檔案數要大,那麼用已經備份的檔案數減去最大備份檔案數,列印要删除舊的備份檔案
if [ $BACKUP_FILES_MADE -gt $MAXIMUM_BACKUP_FILES ];then
REMOVE_FILES=$(( $BACKUP_FILES_MADE - $MAXIMUM_BACKUP_FILES ))
echo "[+] Remove ${REMOVE_FILES} old backup files."
#統計所有備份檔案,把最新備份的檔案存放在一個臨時檔案裡,然後删除舊的檔案,循環出臨時檔案的備份檔案從臨時目錄裡移到目前目錄
ALL_BACKUP_FILES=($(ls -t ${BACKUP_FOLDERNAME}*.tar.bz2))
SAFE_BACKUP_FILES=("${ALL_BACKUP_FILES[@]:0:${MAXIMUM_BACKUP_FILES}}")
echo "[+] Safeting the newest backup files and removing old files..."
FOLDER_SAFETY="${BACKUP_FOLDERNAME}_safety"
if [ ! -d $FOLDER_SAFETY ]
then mkdir $FOLDER_SAFETY
fi
for FILE in ${SAFE_BACKUP_FILES[@]};do
mv -i ${FILE} ${FOLDER_SAFETY}
done
rm -rf ${BACKUP_FOLDERNAME}*.tar.bz2
mv -i ${FOLDER_SAFETY}/* ${BACKUP_FOLDERNAME}
rm -rf ${FOLDER_SAFETY}
#以下顯示備份的資料檔案删除進度,一般腳本都是放在crontab裡,是以我這裡隻是為了顯示效果,可以不選擇這個效果。
CHAR=''
for ((i=0;$i<=100;i+=2))
do printf "Removing:[%-50s]%d%%\r" $CHAR $i
sleep 0.1
CHAR=#$CHAR
done
echo
fi
備份完成後進行本地導入,測試是否備份完整
在導入的過程中通過統計表、視圖、存儲過程和函數,對比後發現缺了視圖
SELECT COUNT(*), table_type, ENGINE FROM information_schema.tables
WHERE table_schema = 'xxx' AND table_type='VIEW' ORDER BY table_name DESC;
SELECT COUNT(*), table_type, ENGINE FROM information_schema.tables
WHERE table_schema = 'xxx' and table_type='BASE TABLE' ORDER BY table_name DESC;
經過檢視導入日志,發現缺少的視圖導入的時候報錯了
Query : /*!50001 CREATE ALGORITHM=UNDEFINED */ /*!50013 DEFINER=`xx`@`%` SQL SECURITY DEFINER */ /*!50001 VIEW `xxx...
Error Code : 1449
The user specified as a definer ('xx'@'%') does not exist
問題找到了,因為問哦本地木有xx使用者,是以導入的時候報錯,然後我在本地建了該使用者,同時用該使用者進行導入,最好解決問題
建立使用者如下
CREATE USER 'xx'@'%' IDENTIFIED BY 'yth_Bpm';
GRANT ALL ON *.* TO 'xx'@'%';
flush privileges;
最後隻讓該腳本定時啟動即可
crontab -e編輯crontab檔案,每個使用者都有crontab
加入(表示每天淩晨2點執行備份)
00 02 * * * /usr/bin/sh /xx/xx/xx.sh
儲存即可 crontab -l檢視