xtrabackup自动备份脚本



#backup.sh
#!/bin/sh
#on xtrabackup 2.2.8
# 第一次执行它的时候它会检查是否有完全备份,否则先创建一个全库备份
# 当你再次运行它的时候，它会根据脚本中的设定来基于之前的全备或增量备份进行增量备份
#[email protected]

INNOBACKUPEX_PATH=innobackupex  #INNOBACKUPEX的命令
INNOBACKUPEXFULL=/usr/local/xtrabackup/bin/$INNOBACKUPEX_PATH  #INNOBACKUPEX的命令路径

#mysql目标服务器以及用户名和密码
MYSQL_CMD="--host=192.168.5.189 --user=root --password=password --port=3306"  

MYSQL_UP=" --user=root --password='password' --port=3306 "  #mysqladmin的用户名和密码

TMPLOG="/tmp/innobackupex.$$.log"

MY_CNF=/usr/local/mysql/my.cnf #mysql的配置文件

MYSQL=/usr/bin/mysql

MYSQL_ADMIN=/usr/bin/mysqladmin

BACKUP_DIR=/backup # 备份的主目录

FULLBACKUP_DIR=$BACKUP_DIR/full # 全库备份的目录

INCRBACKUP_DIR=$BACKUP_DIR/incre # 增量备份的目录

FULLBACKUP_INTERVAL=86400 # 全库备份的间隔周期，时间：秒

KEEP_FULLBACKUP=1 # 至少保留几个全库备份

logfiledate=backup.`date +%Y%m%d%H%M`.txt

#开始时间
STARTED_TIME=`date +%s`



#############################################################################

# 显示错误并退出

#############################################################################

error()
{
    echo "$1" 1>&2
    exit 1
}

 

# 检查执行环境

if [ ! -x $INNOBACKUPEXFULL ]; then
  error "$INNOBACKUPEXFULL未安装或未链接到/usr/bin."
fi

 

if [ ! -d $BACKUP_DIR ]; then
  error "备份目标文件夹:$BACKUP_DIR不存在."
fi

 

mysql_status=`netstat -nl | awk 'NR>2{if ($4 ~ /.*:3306/) {print "Yes";exit 0}}'`

if [ "$mysql_status" != "Yes" ];then
    error "MySQL 没有启动运行."
fi



 

if ! `echo 'exit' | $MYSQL -s $MYSQL_CMD` ; then
 error "提供的数据库用户名或密码不正确!"
fi

 

# 备份的头部信息

echo "----------------------------"
echo
echo "$0: MySQL备份脚本"
echo "开始于: `date +%F' '%T' '%w`"
echo

 

#新建全备和差异备份的目录

mkdir -p $FULLBACKUP_DIR
mkdir -p $INCRBACKUP_DIR



#查找最新的完全备份
LATEST_FULL_BACKUP=`find $FULLBACKUP_DIR -mindepth 1 -maxdepth 1 -type d -printf "%P\n" | sort -nr | head -1`

 

# 查找最近修改的最新备份时间

LATEST_FULL_BACKUP_CREATED_TIME=`stat -c %Y $FULLBACKUP_DIR/$LATEST_FULL_BACKUP`


#如果全备有效进行增量备份否则执行完全备份
if [ "$LATEST_FULL_BACKUP" -a `expr $LATEST_FULL_BACKUP_CREATED_TIME + $FULLBACKUP_INTERVAL + 5` -ge $STARTED_TIME ] ; then
 # 如果最新的全备未过期则以最新的全备文件名命名在增量备份目录下新建目录
 echo -e "完全备份$LATEST_FULL_BACKUP未过期,将根据$LATEST_FULL_BACKUP名字作为增量备份基础目录名"
 echo "        "
 NEW_INCRDIR=$INCRBACKUP_DIR/$LATEST_FULL_BACKUP
 mkdir -p $NEW_INCRDIR

 # 查找最新的增量备份是否存在.指定一个备份的路径作为增量备份的基础
 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/$LATEST_FULL_BACKUP
   echo -e "增量备份将以$INCRBASEDIR作为备份基础目录"
   echo "        "
  else
   INCRBASEDIR=$INCRBACKUP_DIR/${LATEST_FULL_BACKUP}/${LATEST_INCR_BACKUP}
   echo -e "增量备份将以$INCRBASEDIR作为备份基础目录"
   echo "        "
  fi

 echo "使用$INCRBASEDIR作为基础本次增量备份的基础目录."
 $INNOBACKUPEXFULL --defaults-file=$MY_CNF --use-memory=4G $MYSQL_CMD --incremental $NEW_INCRDIR --incremental-basedir $INCRBASEDIR > $TMPLOG 2>&1

 #保留一份备份的详细日志

 cat $TMPLOG>/backup/$logfiledate

 if [ -z "`tail -1 $TMPLOG | grep 'innobackupex: completed OK!'`" ] ; then
  echo "$INNOBACKUPEX命令执行失败:"; echo
  echo -e "---------- $INNOBACKUPEX_PATH错误 ----------"
  cat $TMPLOG
  rm -f $TMPLOG
  exit 1
 fi

 THISBACKUP=`awk -- "/Backup created in directory/ { split( \\\$0, p, \"'\" ) ; print p[2] }" $TMPLOG`
 rm -f $TMPLOG


 echo -n "数据库成功备份到:$THISBACKUP"
 echo

 # 提示应该保留的备份文件起点

 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' #红色
 echo -e "必须保留$KEEP_FULLBACKUP份全备即全备${RES_FULL_BACKUP}和${RES_INCRE_BACKUP}目录中所有增量备份."
 echo -e '\e[31m NOTE:---------------------------------------------------------------------------------.\e[m' #红色
 echo



else
 echo  "*********************************"
 echo -e "正在执行全新的完全备份...请稍等..."
 echo  "*********************************"
 $INNOBACKUPEXFULL --defaults-file=$MY_CNF  --use-memory=4G  $MYSQL_CMD $FULLBACKUP_DIR > $TMPLOG 2>&1 
 #保留一份备份的详细日志

 cat $TMPLOG>/backup/$logfiledate


 if [ -z "`tail -1 $TMPLOG | grep 'innobackupex: completed OK!'`" ] ; then
  echo "$INNOBACKUPEX命令执行失败:"; echo
  echo -e "---------- $INNOBACKUPEX_PATH错误 ----------"
  cat $TMPLOG
  rm -f $TMPLOG
  exit 1
 fi

  
 THISBACKUP=`awk -- "/Backup created in directory/ { split( \\\$0, p, \"'\" ) ; print p[2] }" $TMPLOG`
 rm -f $TMPLOG

 echo -n "数据库成功备份到:$THISBACKUP"
 echo

 # 提示应该保留的备份文件起点

 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' #红色
 echo -e "无增量备份,必须保留$KEEP_FULLBACKUP份全备即全备${RES_FULL_BACKUP}."
 echo -e '\e[31m NOTE:---------------------------------------------------------------------------------.\e[m' #红色
 echo

fi






#删除过期的全备

echo -e "find expire backup file...........waiting........."
echo -e "寻找过期的全备文件并删除">>/backup/$logfiledate
for efile in $(/usr/bin/find $FULLBACKUP_DIR/ -mtime +6)
do
 if [ -d ${efile} ]; then
 rm -rf "${efile}"
 echo -e "删除过期全备文件:${efile}" >>/backup/$logfiledate
 elif [ -f ${efile} ]; then
 rm -rf "${efile}"
 echo -e "删除过期全备文件:${efile}" >>/backup/$logfiledate
 fi;
 
done

if [ $? -eq "0" ];then
   echo
   echo -e "未找到可以删除的过期全备文件"
fi



echo
echo "完成于: `date +%F' '%T' '%w`"
exit 0





-------------------------执行结果如:
Warning: Using a password on the command line interface can be insecure.
----------------------------


./backup.sh: MySQL备份脚本
开始于: 2015-04-03 16:35:11 5


*********************************
正在执行全新的完全备份...请稍等...
*********************************
数据库成功备份到:/backup/full/2015-04-03_16-35-11


 NOTE:---------------------------------------------------------------------------------.
无增量备份,必须保留1份全备即全备/backup/full/2015-04-03_16-35-11.
 NOTE:---------------------------------------------------------------------------------.


find expire backup file...........waiting.........


未找到可以删除的过期全备文件


完成于: 2015-04-03 16:35:25 5
./backup.sh: MySQL备份脚本
开始于: 2015-04-03 16:35:50 5


完全备份2015-04-03_16-35-11未过期,将根据2015-04-03_16-35-11名字作为增量备份基础目录名
<span style="white-space:pre">     </span>   
增量备份将以/backup/full/2015-04-03_16-35-11作为备份基础目录
<span style="white-space:pre">     </span>   
使用/backup/full/2015-04-03_16-35-11作为基础本次增量备份的基础目录.
数据库成功备份到:/backup/incre/2015-04-03_16-35-11/2015-04-03_16-35-50


 NOTE:---------------------------------------------------------------------------------.
必须保留1份全备即全备/backup/full/2015-04-03_16-35-11和/backup/incre/2015-04-03_16-35-11目录中所有增量备份.
 NOTE:---------------------------------------------------------------------------------.


find expire backup file...........waiting.........


未找到可以删除的过期全备文件