mysql 備份指令碼
#!/bin/bash
INNOBACKUPEXFULL="/usr/bin/innobackupex"
MYSQL_CMD=' --socket=/ssd/mysql/3346/tmp/mysql.sock --user=root --password=mysqlpassword --port=3346'
MYSQL_UP=' --user=root --password=mysqlpassword --port=3346 ' #mysqladmin的使用者名稱和密碼
TMPLOG="/data/tmp/innobackupex.$$.log"
MY_CNF="/usr/local/mysql/mysql3346.cnf" #mysql的配置檔案
TMP_DIR=/data/backup_tmp
MYSQL=/usr/local/mysql/bin/mysql
MYSQL_ADMIN=/usr/local/mysql/bin/mysqladmin
BACKUP_DIR=/data/backup # 備份的主目錄
FULLBACKUP_DIR=$BACKUP_DIR/full # 全庫備份的目錄
INCRBACKUP_DIR=$BACKUP_DIR/incre # 增量備份的目錄
FULLBACKUP_INTERVAL=86400 # 全庫備份的間隔週期，時間：秒
KEEP_FULLBACKUP=1 # 至少保留幾個全庫備份
logfiledate=/data/backup/backup.`date +%Y%m%d%H%M`.txt
#開始時間
STARTED_TIME=`date +%s`
#############################################################################
# 顯示錯誤並退出
#############################################################################
error()
{
echo "$1" 1>&2
exit 1
}
# 檢查執行環境
if [ ! -x $INNOBACKUPEXFULL ]; then
error "$INNOBACKUPEXFULL未安裝或未連結到/usr/bin."
fi
if [ ! -d $BACKUP_DIR ]; then
error "備份目標資料夾:$BACKUP_DIR不存在."
fi
mysql_status=`netstat -nl | awk 'NR>2{if ($4 ~ /.*:3346/) {print "Yes";exit 0}}'`
if [ "$mysql_status" != "Yes" ];then
error "MySQL 沒有啟動執行."
fi
if ! `echo 'exit' | $MYSQL -s $MYSQL_CMD` ; then
error "提供的資料庫使用者名稱或密碼不正確!"
fi
# 備份的頭部資訊
echo "----------------------------"
echo
echo "$0: MySQL備份指令碼"
echo "開始於: `date +%F' '%T' '%w`"
echo
#新建全備和差異備份的目錄
mkdir -p $FULLBACKUP_DIR
mkdir -p $INCRBACKUP_DIR
#查詢最新的完全備份
LATEST_FULL_BACKUP=`find $FULLBACKUP_DIR -mindepth 1 -maxdepth 1 -type d -printf "%P\n" | sort -nr | head -1`
# 查詢最近修改的最新備份時間
#########m by sk 將檔案目錄改成時間"2017-10-01_02-02-02"
#先轉成TEMPSTR "2017-10-01 02:02:02"
#LATEST_FULL_BACKUP_CREATED_TIME=`stat -c %Y $FULLBACKUP_DIR/$LATEST_FULL_BACKUP`
TEMPSTR=`echo "$LATEST_FULL_BACKUP" | sed "s/_/ /"|sed "s/-/:/3g"`
LATEST_FULL_BACKUP_CREATED_TIME=`date +%s -d "$TEMPSTR"`
#########
#如果全備有效進行增量備份否則執行完全備份
if [ "$LATEST_FULL_BACKUP" -a `expr $LATEST_FULL_BACKUP_CREATED_TIME + $FULLBACKUP_INTERVAL - 300` -ge $STARTED_TIME ] ; then
# 如果最新的全備未過期則以最新的全備檔名命名在增量備份目錄下新建目錄
echo -e "完全備份$LATEST_FULL_BACKUP未過期,將根據$LATEST_FULL_BACKUP名字作為增量備份基礎目錄名"
echo " "
NEW_INCRDIR=$INCRBACKUP_DIR/$LATEST_FULL_BACKUP
mkdir -p $NEW_INCRDIR
# 查詢最新的增量備份是否存在.指定一個備份的路徑作為增量備份的基礎
LATEST_INCR_BACKUP=`find $NEW_INCRDIR -mindepth 1 -maxdepth 1 -type d -printf "%P\n" | sort -nr | head -1`
if [ ! $LATEST_INCR_BACKUP ] ; then
INCRBASEDIR=$FULLBACKUP_DIR/$LATEST_FULL_BACKUP
echo -e "增量備份將以$INCRBASEDIR作為備份基礎目錄"
echo " "
else
INCRBASEDIR=$INCRBACKUP_DIR/${LATEST_FULL_BACKUP}/${LATEST_INCR_BACKUP}
echo -e "增量備份將以$INCRBASEDIR作為備份基礎目錄"
echo " "
fi
echo "使用$INCRBASEDIR作為基礎本次增量備份的基礎目錄."
$INNOBACKUPEXFULL --defaults-file=$MY_CNF --encrypt=AES256 --encrypt-key=3c0efcea56shr1fink45e499996a0e28 --encrypt-threads=5 --use-memory=4G $MYSQL_CMD --incremental --parallel=4 --no-lock --safe-slave-backup --slave-info --tmpdir=$TMP_DIR $NEW_INCRDIR --incremental-basedir $INCRBASEDIR > $TMPLOG 2>&1
#保留一份備份的詳細日誌
cat $TMPLOG>$logfiledate
if [ -z "`tail -1 $TMPLOG | grep 'innobackupex: completed OK!'`" ] ; then
echo "$INNOBACKUPEX命令執行失敗:"; echo
echo -e "---------- $INNOBACKUPEX_PATH錯誤 ----------"
cat $TMPLOG
rm -f $TMPLOG
exit 1
fi
THISBACKUP=`awk -- "/Backup created in directory/ { split( \\\$0, p, \"'\" ) ; print p[2] }" $TMPLOG`
##add by sk
echo "skmsize:`du -sm $THISBACKUP | awk '{print $1}'`">>$logfiledate
##
rm -f $TMPLOG
echo -n "資料庫成功備份到:$THISBACKUP"
xbcrypt -d --encrypt-key=3c0efcea56shr1fink45e499996a0e28 --encrypt-algo=AES256 -i $THISBACKUP/xtrabackup_checkpoints.xbcrypt -o $THISBACKUP/xtrabackup_checkpoints
echo
# 提示應該保留的備份檔案起點
LATEST_FULL_BACKUP=`find $FULLBACKUP_DIR -mindepth 1 -maxdepth 1 -type d -printf "%P\n" | sort -nr | head -1`
NEW_INCRDIR=$INCRBACKUP_DIR/$LATEST_FULL_BACKUP
LATEST_INCR_BACKUP=`find $NEW_INCRDIR -mindepth 1 -maxdepth 1 -type d -printf "%P\n" | sort -nr | head -1`
RES_FULL_BACKUP=${FULLBACKUP_DIR}/${LATEST_FULL_BACKUP}
RES_INCRE_BACKUP=`dirname ${INCRBACKUP_DIR}/${LATEST_FULL_BACKUP}/${LATEST_INCR_BACKUP}`
echo
echo -e '\e[31m NOTE:---------------------------------------------------------------------------------.\e[m' #紅色
echo -e "必須保留$KEEP_FULLBACKUP份全備即全備${RES_FULL_BACKUP}和${RES_INCRE_BACKUP}目錄中所有增量備份."
echo -e '\e[31m NOTE:---------------------------------------------------------------------------------.\e[m' #紅色
echo
else
echo "*********************************"
echo -e "正在執行全新的完全備份...請稍等..."
echo "*********************************"
$INNOBACKUPEXFULL --defaults-file=$MY_CNF --encrypt=AES256 --encrypt-key=3c0efcea56shr1fink45e499996a0e28 --encrypt-threads=5 --use-memory=4G --no-lock --safe-slave-backup --parallel=4 --tmpdir=$TMP_DIR --slave-info $MYSQL_CMD $FULLBACKUP_DIR > $TMPLOG 2>&1
#保留一份備份的詳細日誌
cat $TMPLOG>$logfiledate
if [ -z "`tail -1 $TMPLOG | grep 'innobackupex: completed OK!'`" ] ; then
echo "$INNOBACKUPEX命令執行失敗:"; echo
echo -e "---------- $INNOBACKUPEX_PATH錯誤 ----------"
cat $TMPLOG
rm -f $TMPLOG
exit 1
fi
THISBACKUP=`awk -- "/Backup created in directory/ { split( \\\$0, p, \"'\" ) ; print p[2] }" $TMPLOG`
##add by sk
echo "skmsize:`du -sm $THISBACKUP | awk '{print $1}'`">>$logfiledate
##
rm -f $TMPLOG
echo -n "資料庫成功備份到:$THISBACKUP"
xbcrypt -d --encrypt-key=3c0efcea56shr1fink45e499996a0e28 --encrypt-algo=AES256 -i $THISBACKUP/xtrabackup_checkpoints.xbcrypt -o $THISBACKUP/xtrabackup_checkpoints
echo
# 提示應該保留的備份檔案起點
LATEST_FULL_BACKUP=`find $FULLBACKUP_DIR -mindepth 1 -maxdepth 1 -type d -printf "%P\n" | sort -nr | head -1`
RES_FULL_BACKUP=${FULLBACKUP_DIR}/${LATEST_FULL_BACKUP}
echo
echo -e '\e[31m NOTE:---------------------------------------------------------------------------------.\e[m' #紅色
echo -e "無增量備份,必須保留$KEEP_FULLBACKUP份全備即全備${RES_FULL_BACKUP}."
echo -e '\e[31m NOTE:---------------------------------------------------------------------------------.\e[m' #紅色
echo
fi
#刪除過期的全備
echo -e "find expire backup file...........waiting........."
echo -e "尋找過期的全備檔案並刪除">>$logfiledate
#for efile in $(/usr/bin/find $FULLBACKUP_DIR/ -mtime +7)
##do
## if [ -d ${efile} ]; then
# rm -rf "${efile}"
# echo -e "刪除過期全備檔案:${efile}" >>$logfiledate
# elif [ -f ${efile} ]; then
# rm -rf "${efile}"
# echo -e "刪除過期全備檔案:${efile}" >>$logfiledate
# fi;
#
#done
cd $FULLBACKUP_DIR
/usr/bin/find -maxdepth 1 -type d -mtime +5|xargs rm -fr
if [ $? -eq "0" ];then
echo
echo -e "未找到可以刪除的過期全備檔案"
fi
echo
echo "完成於: `date +%F' '%T' '%w`"
cd $INCRBACKUP_DIR
/usr/bin/find -maxdepth 1 -type d -mtime +5|xargs rm -fr
if [ $? -eq "0" ];then
echo
echo -e "未找到可以刪除的過期增量備份檔案"
fi
echo
echo "完成於: `date +%F' '%T' '%w`"
exit 0