xtrabackup.sh适用(5.7/8.0)

Posted 2022-06-15 Demonson

# vim xtrabackup.sh 


#!/bin/bash 

 # 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  
  
 #mysql目标服务器以及用户名和密码  
 MYSQL_CMD="/usr/bin/xtrabackup --defaults-file=/etc/my.cnf --backup --host=127.0.0.1 --user=backup_user --password=E6gps@1234  --port=3306 --parallel=4 --compress --compress-threads=8 --target-dir="    
 MY_CNF=/etc/my.cnf #mysql的配置文件  
 MYSQL=/usr/bin/mysql
 MYSQL_ADMIN=/usr/bin/mysqladmin 
 BACKUP_DIR=/data/mysqlbak # 备份的主目录  
 FULLBACKUP_DIR=$BACKUP_DIR/backup/full # 全库备份的目录  
 INCRBACKUP_DIR=$BACKUP_DIR/backup/incre # 增量备份的目录  
 TMPLOG="$BACKUP_DIR/backup/log/xtrabackup.$$.log"  
 FULLBACKUP_INTERVAL=604800 # 全库备份的间隔周期，时间：秒  
 KEEP_FULLBACKUP=2 # 至少保留几个全库备份  
 logfiledate=backup.`date +%Y%m%d%H%M`.txt  
 LOGFILE_DIR=$BACKUP_DIR/backup/log
 
 #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  
 
 # -x file 用户可执行为真
 if [ ! -x $INNOBACKUPEXFULL ]; then  
   error "$INNOBACKUPEXFULL未安装或未链接到/usr/bin."  
 fi 
 
 #-d file 文件为目录为真
 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>2if ($4 ~ /.*:3306/) print "Yes";exit 0'`  
 
 if [ "$mysql_status" != "Yes" ];then  
     error "MySQL 没有启动运行."  
 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  
 mkdir -p $LOGFILE_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 -a代表 -and 
 
 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$INCRBASEDIR作为基础本次增量备份的基础目录."  
     echo -e "$MYSQL_CMD$NEW_INCRDIR/$(date +'%Y-%m-%d_%H-%M-%S') --incremental-basedir $INCRBASEDIR > $TMPLOG"
     $MYSQL_CMD$NEW_INCRDIR/$(date +'%Y-%m-%d_%H-%M-%S') --incremental-basedir $INCRBASEDIR > $TMPLOG 2>&1
     #保留一份备份的详细日志   
 
     cat $TMPLOG>$LOGFILE_DIR/$logfiledate  
     if [ -z "`tail -1 $TMPLOG | grep 'completed OK!'`" ] ; then  
      echo "$INNOBACKUPEX命令执行失败:"; echo  
      echo -e "---------- $INNOBACKUPEX_PATH错误 ----------"  
      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  
	 
	 #echo -e "--------将备份压缩并拷贝到远程服务器----------------"
	 #cd $INCRBACKUP_DIR/$LATEST_FULL_BACKUP
     #latest_incre_dir=$LATEST_INCR_BACKUP
     #target_incre_file=$LATEST_INCR_BACKUP"_incre.tar"
     #tar -cvf - $latest_incre_dir |ssh -p 50022 root@192.168.1.65 "cat >/data/backup/192.168.1.207/$target_incre_file"

 else  
     echo  "*********************************"  
     echo -e "正在执行全新的完全备份...请稍等..."  
     echo  "*********************************"  
     echo -e "$MYSQL_CMD$FULLBACKUP_DIR/$(date +'%Y-%m-%d_%H-%M-%S') > $TMPLOG"
     $MYSQL_CMD$FULLBACKUP_DIR/$(date +'%Y-%m-%d_%H-%M-%S') > $TMPLOG 2>&1
 
     #保留一份备份的详细日志  
 
     cat $TMPLOG>>$LOGFILE_DIR/$logfiledate
     if [ -z "`tail -1 $TMPLOG | grep 'completed OK!'`" ] ; then  
      echo "$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  
	 
	#echo -e "--------将备份压缩并拷贝到远程服务器----------------"
	#cd $FULLBACKUP_DIR
    #latest_full_dir=$LATEST_FULL_BACKUP
    #target_full_file=$LATEST_FULL_BACKUP"_full.tar"
    #tar -cvf - $latest_full_dir |ssh -p 50022 root@192.168.1.65 "cat >/data/backup/192.168.1.207/$target_full_file"
	 
 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">>$LOGFILE_DIR/$logfiledate  
 for efile in $(/usr/bin/find $FULLBACKUP_DIR/ -mtime +15)  
 
 do  
     if [ -d $efile ]; then  
     echo -e "删除过期全备文件:$efile" >>$LOGFILE_DIR/$logfiledate 
     rm -rf "$efile"  
  
     elif [ -f $efile ]; then  
     echo -e "删除过期全备文件:$efile" >>$LOGFILE_DIR/$logfiledate
     rm -rf "$efile"    
     fi;  
 done  
 
 if [ $? -eq "0" ];then  
    echo  
    echo -e "未找到可以删除的过期全备文件"  
 fi  
    
 #删除过期的增量备份
 
 echo -e "find expire backup file...........waiting........."  
 echo -e "寻找过期的增量备份文件并删除">>$LOGFILE_DIR/$logfiledate  
 for efile in $(/usr/bin/find $INCRBACKUP_DIR/ -mtime +7)  
 
 do  
     if [ -d $efile ]; then  
     echo -e "删除过期增量备份文件:$efile" >>$LOGFILE_DIR/$logfiledate
     rm -rf "$efile"  
     elif [ -f $efile ]; then  
     echo -e "删除过期增量备份文件:$efile" >>$LOGFILE_DIR/$logfiledate
     rm -rf "$efile"    
     fi;  
 done  
 
 if [ $? -eq "0" ];then  
    echo  
    echo -e "未找到可以删除的过期增量备份文件"  
 fi 
 
 echo  
 echo "完成于: `date +%F' '%T' '%w`"  
 exit 0