innobackupex 单脚本循环7天一全备6增备脚本更新

#!/bin/bash

#日期转为天数
function date2days {
echo "$*" | awk '{
z=int((14-$2)/12); y=$1+4800-z; m=$2+12*z-3;
j=int((153*m+2)/5)+$3+y*365+int(y/4)-int(y/100)+int(y/400)-2472633;
print j
}'
}

#说明：脚本执行策略为每天执行一次，执行前需要先建立config文件，并在config文件
#中添加
#backup_full=
#backup_pre_name=
#即可，注意路径。
#备份策略，每七天一个循环，第一天为全备份，第二天至第六天为增量备份。
#后续会增加已备份文件压缩转移定期删除部分

#######################
db_user="xtrabackup"
db_passwd="mysQlbackup"
db_defaults_file="/home/backup/config/3306.cnf"
db_socket="/var/lib/mysql/mysql_3306.sock"
db_backup="/home/backup/"
db_backup_fulldir="/home/backup/full/"
db_backup_incrementaldir="/home/backup/incremental/"
db_backup_gzfull="/home/backup/gzip/"
db_backup_tarfull="/home/backup/tar.gzdb/"
rm_num=7

#用于压缩并转移源文件
move_and_tar (){
if [ $# != 1 ]; then
echo "参数不正确"
exit 0
fi

time_rm=`date -d "$1 days ago" +"back_%d-%m-%Y"`

if [ $1 -eq 7 ]; then
if [ -d ${db_backup_fulldir}${time_rm} ]; then
su - root -c "tar -czPvf ${db_backup_tarfull}${time_rm}_full.tar.gz ${db_backup_fulldir}${time_rm}"
su - root -c "rm -rf ${db_backup_fulldir}${time_rm}"
echo "压缩目录rm $db_backup_fulldir${time_rm}" >>/home/backup/config/tar.log
fi
fi

if [ $1 -gt 0 -a $1 -lt 7 ]; then
if [ -d $db_backup_incrementaldir${time_rm} ]; then
su - root -c "tar -czPvf ${db_backup_tarfull}${time_rm}_increment.tar.gz ${db_backup_incrementaldir}${time_rm}"
su - root -c "rm -rf ${db_backup_incrementaldir}${time_rm}"
echo "压缩目录rm $db_backup_incrementaldir${time_rm}" >>/home/backup/config/tar.log
fi
fi
}

#得到当前时间和配置文件
time="$(date +"back_%d-%m-%Y")"
source /home/backup/config/config

#计算今天到上次全备份相隔天数
_Day=$(date2days `echo ${backup_full:5:10}|awk 'BEGIN{FS="-"}{print $3,$2,$1}'`)
Day=$(date2days `date +"%Y %m %d"`)
echo $_Day
echo $Day
let result=$Day-$_Day
echo "相差$result天"

if [ -z ${backup_full} ] || [ $result -ge 7 ] ; then
#todo
echo '全备份'
backup_full=${time}
innobackupex --defaults-file=$db_defaults_file --no-timestamp --user=${db_user} --password=${db_passwd} --socket=$db_socket ${db_backup_fulldir}${backup_full}/

if [ $? -eq 0 ]; then
echo "${time} 备份成功!!!" >> /home/backup/config/results.log
else
echo "${time} 备份失败???" >> /home/backup/config/results.log
fi

#更新配置文件
echo "backup_full=${backup_full}" >/home/backup/config/config
echo "backup_pre_name=full/${backup_full}" >>/home/backup/config/config

#自动删除两周以前的备份文件
while [ ${rm_num} -lt 8 -a ${rm_num} -gt 0 ]
do
move_and_tar ${rm_num}
rm_num=`expr ${rm_num} - 1`
done

echo '全备份'
else
#todo
echo '增量备份'

innobackupex --defaults-file=$db_defaults_file --socket=$db_socket --no-timestamp --user=${db_user} --password=${db_passwd} --incremental ${db_backup_incrementaldir}${time}/ --incremental-basedir=${db_backup}${backup_pre_name}

if [ $? -eq 0 ]; then
echo "${time} 增量备份成功!!!" >> /home/backup/config/results.log
else
echo "${time} 增量备份失败???" >> /home/backup/config/results.log
fi

#更新配置文件
echo "backup_full=${backup_full}" >/home/backup/config/config
echo "backup_pre_name=incremental/${time}" >>/home/backup/config/config
echo '增量备份'
fi