Xtrabackup 备份脚本

Posted 2020-10-17

#!/bin/bash

## by Mr he

bak_dir="/data/mysql_backup/"
xtr_path="/usr/bin/innobackupex"
mysql_cnf="/etc/my.cnf"
thr_cnt=1
name="xxx"
pawd="xxx"
e_path="/home/mysql/sendEmail.sh"

# 备份文件名
cur_path="$bak_dir"`date +%F_%H_%M_%S`

##备份日志
bak_log="/tmp/backup_mysql.txt"

ip_addr=`ip a| grep inet|grep -v 127.0.0.1|grep -v inet6|awk ‘{print $2}‘| awk -F ‘/‘ ‘{print $1}‘ |head -1 `

###判断备份目录
[[ -d $bak_dir ]] || mkdir -p $bak_dir
cd $bak_dir

function bak_full()
{
  $xtr_path --defaults-file=$mysql_cnf --user=$name --password=$pawd --host=127.0.0.1 --port 3306 --parallel=$thr_cnt --no-timestamp ${cur_path}full > $bak_log 2>&1
  ###备份结束时间
  bak_end=`sed ‘/^$/d‘ $bak_log | tail -1 | awk {‘print $1"-"$2‘}`

  ####判断备份是否成功 OK!
  ok_str=`sed ‘/^$/d‘ $bak_log | tail -1 | awk ‘{print $4}‘ ` 
  
  bak_sendEmail "$ok_str"
}

function bak_inc()
{
  #### 获得上次备份的基准目录
  prev_dir=`ls -l |awk  ‘{print $9}‘|grep -v ‘^$‘ |grep -v .tar | sort |head -1 `
  $xtr_path --defaults-file=$mysql_cnf --user=$name --password=$pawd --host=127.0.0.1  --port 3306 --parallel=$thr_cnt --no-timestamp --incremental ${cur_path}inc --incremental-basedir="$bak_dir""$prev_dir"  > $bak_log 2>&1
      
   bak_end=`sed ‘/^$/d‘ $bak_log | tail -1 | awk {‘print $1"-"$2‘}`
      
 
   ok_str=`sed ‘/^$/d‘ $bak_log | tail -1 | awk ‘{print $4}‘` 
 
   bak_sendEmail "$ok_str" 
}

function bak_sendEmail()
{
  if [ "$1" == "OK!" ]; then
    ###压缩当前备份
    file_tar=`ls -l  |awk ‘{print $9}‘|grep -v ‘^$‘ |grep -v .tar |sort -n |tail -1 `
    tar -zcvf ${file_tar}.tar  ${file_tar}  > /dev/null 2>&1 
    
    #####删除备份基准文件
    ## rm -rf `ls -l  |grep -v .tar | grep -v $file_tar
    find ./ -maxdepth 1 -type d ! -name "${file_tar}*" | awk -F ‘/‘ ‘{print $2}‘ | xargs rm -rf
   
    #### echo 可改为 $e_path 发的邮件脚本
      echo " backup successful"  " backup successful  IP:$ip_addr  bak_str:$bak_str bak_end:$bak_end"
 
  else
    rm -rf $cur_path*  ###删除当前备份失败的目录 
    echo " !!! backup failure !!!" " !!! backup failure !!!  IP:$ip_addr $bak_str backup have some wrong!!!" "$bak_log"
  fi
}

###备份开始时间
bak_str=`date +%Y-%m-%d_%H:%M:%S`

if [ "$1" == "full" ]; then    
    bak_full
elif [ "$1" == "inc" ]; then
       #####如果备份的目录下没有备份，全备
     if [ `find $bak_dir -maxdepth 1 -type d | wc -l` -eq 1 ]; then 
         bak_full
     else
         bak_inc
     fi
else
    echo "Usage: $0 full | inc "
    exit

fi

## 删除2周前的数据备份
rm -rf ${bak_dir}`date -d ‘14 days ago‘ +‘%F‘`_*