#!/bin/sh
#mysql_backup
begintime=`date +"%Y-%m-%d_%H-%M-%S"`
format_time=`date +"%Y-%m-%d_%H-%M-%S"`
tar_time=`date +%F --date="-1 day"`
currentHour=$(date +%H)
port=3306
backdir=/data/backup
tardir='/data/mysql_backup'
file_cnf=/etc/my.cnf
user_name=root
passwd='123456'
sock=/data/mysqldata/mysql.sock
out_log=$backdir/xtraback_log_$format_time
time_cost=$backdir/xtraback_time.txt

#判断数据备份的压缩目录是否存在
if [ ! -d "$tardir" ];then
    mkdir -p $tardir
fi

#判断备份目录是否存在
if [ ! -d "$backdir" ]; then
    mkdir -p $backdir
else
#判断昨日是否备份，有则打包压缩后删除之前备份的目录
    if [ -d "$backdir/rec2" ];then
        tar zcf ${tardir}/mysql_bckup_$tar_time.tar.gz -C $backdir .
        sleep 3
        rm -fr ${backdir}/*
     fi
fi

#凌晨3时完全备份
if [ $currentHour -eq 03 ] && [ ! -d "$backdir/full" ];then
    echo "#####start full backup at $begintime to directory full" >>$time_cost
    /usr/bin/innobackupex --defaults-file=$file_cnf --no-lock --no-timestamp --user=$user_name --password=$passwd --port=$port --socket=$sock $backdir/full &> ${out_log}-full.log
    sleep 3
#中午14时与晚上19时进行增量备份
elif [ $currentHour -eq 14 ] && [ ! -d "$backdir/rec1" ];then
    echo "#####start 1 incremental backup at $begintime to directory rec1" >>$time_cost
    /usr/bin/innobackupex --defaults-file=$file_cnf --no-lock --no-timestamp --user=$user_name --password=$passwd --port=$port --socket=$sock --incremental --incremental-basedir=$backdir/full $backdir/rec1 &> $out_log-rec1
    sleep 3

elif [ $currentHour -eq 19 ] && [ ! -d "$backdir/rec2" ];then
    echo "#####start 3 incremental backup at $begintime to directory rec2" >>$time_cost
    /usr/bin/innobackupex --defaults-file=$file_cnf --no-lock --no-timestamp  --user=$user_name --password=$passwd --port=$port --socket=$sock --incremental --incremental-basedir=$backdir/rec1 $backdir/rec2 &> $out_log-rec2
    sleep 3

fi