#!/bin/bash
# Name: xtra_back_mysql.sh
# Desc:该脚本使用xtrabackup工具对mysql数据库进行增量备份，根据自己需求可以自行修改
# Usage:./xtra_back_mysql.sh
# Author: Ghost
# Update: 2018-08-05
# 备份策略：周3、周5、周日全备，周1，周2，周4,周6增备
#变量定义
basedir = /usr/local/mysql
datadir = /usr/local/mysql/data
conf_file= $basedir/my.cnf
xtra_full_dir = /mydb3307/back_full
xtra_increment_dir = /mydb3307/back_increment
xtr_full_log = /mydb3307/log/full_`$date '+%F %T'`.log
xtr_increment_log = /mydb3307/log/increment_`$date '+%F %T'`.log
#全量备份
full_back()
{
#备份
/usr/bin/innobackupex --user=admin --password=123 $xtra_full_dir &> $xtr_full_log
full_name=$(ls -d $xtra_full_dir/$(date +%F)_*)
echo $full_name > $xtra_full_dir/full.txt
#应用日志
echo "++++++++++++++++++++++++我是分割符++++++++++++++++++++++++++" >> $xtr_full_log
/usr/bin/innobackupex --apply-log --redo-only $full_name &>> $xtr_full_log
}
#增量备份1
increment1_back()
{
#备份
full_name=`cat $xtra_full_dir/full.txt`
/usr/bin/innobackupex --user=admin --password=123 --incremental $xtra_increment_dir --incremental-basedir=$full_name &> $xtr_increment_log
increment1_dir=$(ls -d $xtra_increment_dir/$(date +%F)_*)
echo $increment1_dir > $xtra_increment_dir/increment1.txt
#应用日志
echo "++++++++++++++++++++++++我是分割符++++++++++++++++++++++++++" >> $xtr_increment_log
/usr/bin/innobackupex --apply-log --redo-only $full_name --incremental_dir=$increment1_dir &>> $xtr_increment_log
}
#增量备份2
increment2_back()
{
#备份
full_name=`cat $xtra_full_dir/full.txt`
increment1_dir=`cat $xtra_increment_dir/increment1.txt`
/usr/bin/innobackupex --user=admin --password=123 --incremental $xtra_increment_dir --incremental-basedir=$increment1_dir &> $xtr_increment_log
increment2_dir=$(ls -d $xtra_increment_dir/$(date +%F)_*)
echo $increment2_dir > $xtra_increment_dir/increment2.txt
#应用日志
echo "+++++++++++++++++++++我是分割符++++++++++++++++" >> $xtr_increment_log
/usr/bin/innobackupex --apply-log $full_name --incremental_dir=$increment2_dir &>> $xtr_increment_log
}
system_time=`date +%A`
if [ '$system_time' = 'Sunday' -o '$system_time' = 'Wednesday' -o '$system_time' = 'Friday' ];then
full_back && find $xtra_full_dir -daystart -type d -mtime +1 -exec rm -rf {} \; 2>/dev/null
sleep 86400
elif [ '$system_time' = 'Thursday' -o '$system_time' = 'Saturday' -o '$system_time' = 'Monday'];then
increment1_back && find $xtra_increment_dir -type d -mtime +1 -exec rm -rf {} \; 2>/dev/null
sleep 86400
else
increment2_back
sleep 86400
fi