MySQL(MariaDB)定时自动热备份+增量+远程备份脚本

优点：热备份，不影响业务，增量备份，远程备份。
目的:自动打包备份到远程10.0.0.111备份服务器

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前提：
1.安装xtrabackup
yum install http://www.percona.com/downloads/percona-release/RedHat/0.1-3/percona-release-0.1-3.noarch.rpm
yum install percona-xtrabackup-22

2.创建目录
mkdir -p /data/backup
mkdir -p /data/backuptar/

3.添加mysql公钥到备份服务器（10.0.0.111），能免密码远程登录。
4.创建备份用户
GRANT RELOAD,LOCK TABLES,REPLICATION CLIENT ON *.* TO 'bkuser'@'localhost' IDENTIFIED BY 'passwd';
FLUSH PRIVILEGES;

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脚本：
#!/bin/bash
backdir=/data/backup
backupbin=/usr/bin
begintime=`date +"%Y-%m-%d %H:%M:%S"`
format_time=`date +"%Y-%m-%d_%H_%M_%S"`
time_cost=$backdir/xtrabackup_time.txt
week=`date +%w`
user_name=bkuser
password="passwd"
file_cnf=/etc/my.cnf.d/wsrep.cnf
backtar=/data/backuptar/
remote_host="10.0.0.111"
remote_dir=/data/mysqlbak_remote_23
remote_user="wanzi"
out_log=$backdir/xtrabackup_log_$format_time

 
if [ -d "$backdir/rec5" ];then
        echo "开始打包5次的备份"
        cd $backdir
        tar -zcf lastweek.gz ./*
        mv lastweek.gz $backtar/$format_time.lastweek.gz
        echo "完成5次备份打包"
        cd $backtar
        rm -rf `ls |grep -v "$format_time.lastweek.gz"`
        echo "删除本地上次备份完成"

        echo "开始删除远程备份....."
        ssh $remote_user@$remote_host "cd $remote_dir;rm -rf ./*"
        echo "删除远程多余备份完成"
        echo "开始拷贝本地备份到远程服务器..."
        scp $backtar/$format_time.lastweek.gz $remote_host:/$remote_dir
        echo "远程备份完成"
        rm -rf $backdir
        mkdir $backdir
fi

#fullbackup 
if [ ! -d "$backdir/fullbackup" ];then
        echo "在$begintime开始全量备份" >>$time_cost
        $backupbin/innobackupex --defaults-file=$file_cnf --user=$user_name --password=$password --no-timestamp --slave-info  $backdir/fullbackup 1>$out_log 2>&1
        echo "完成全备"
elif [ ! -d "$backdir/rec0" ];then 
        echo "#####start 0 incremental backup at $BEGINTIME to directory rec0" >>$time_cost 
        $backupbin/innobackupex --defaults-file=$file_cnf  --no-timestamp --user=$user_name --password=$password --slave-info  --incremental --incremental-basedir=$bac
kdir/fullbackup $backdir/rec0 1> $out_log 2>&1
        echo "完成第0次增量备份"
       
elif [ ! -d "$backdir/rec1" ];then 
        echo "#####start 1 incremental backup at $BEGINTIME to directory rec1" >>$time_cost 
        $backupbin/innobackupex --defaults-file=$file_cnf  --no-timestamp --user=$user_name --password=$password --slave-info  --incremental --incremental-basedir=$bac
kdir/rec0 $backdir/rec1 1> $out_log 2>&1
        echo "完成第1次增量备份"
           
elif [ ! -d "$backdir/rec2" ];then 
        echo "#####start 2 incremental backup at $BEGINTIME to directory rec2" >>$time_cost 
        $backupbin/innobackupex --defaults-file=$file_cnf  --no-timestamp --user=$user_name --password=$password --slave-info  --incremental --incremental-basedir=$bac
kdir/rec1 $backdir/rec2 1> $out_log 2>&1 
        echo "完成第2次增量备份"
       
elif [ ! -d "$backdir/rec3" ];then 
        echo "#####start 3 incremental backup at $BEGINTIME to directory rec3" >>$time_cost 
        $backupbin/innobackupex --defaults-file=$file_cnf  --no-timestamp --user=$user_name --password=$password --slave-info  --incremental --incremental-basedir=$bac
kdir/rec2 $backdir/rec3 1> $out_log 2>&1
        echo "完成第3次增量备份"
       
elif [ ! -d "$backdir/rec4" ];then 
        echo "#####start 4 incremental backup at $BEGINTIME to directory rec4" >>$time_cost 
        $backupbin/innobackupex --defaults-file=$file_cnf  --no-timestamp --user=$user_name --password=$password --slave-info  --incremental --incremental-basedir=$bac
kdir/rec3 $backdir/rec4 1> $out_log 2>&1
        echo "完成第4次增量备份"
       
elif [ ! -d "$backdir/rec5" ];then 
        echo "#####start 5 incremental backup at $BEGINTIME to directory rec5" >>$time_cost 
        $backupbin/innobackupex --defaults-file=$file_cnf  --no-timestamp --user=$user_name --password=$password --slave-info  --incremental --incremental-basedir=$bac
kdir/rec4 $backdir/rec5 1> $out_log 2>&1 
        echo "完成第5次增量备份"
 fi 
 ENDTIME=`date +"%Y-%m-%d %H:%M:%S"` 
 begin_data=`date -d  "$BEGINTIME" +%s` 
 end_data=`date -d  "$ENDTIME" +%s` 
 spendtime=`expr $end_data - $begin_data` 
 echo "it takes $spendtime sec for packing the data directory" >>$time_cost 

echo "备份结束......"`date`