Python 生产环境MySQL数据库增量备份脚本
需求描述：
每天晚上23点，对数据库进行一次完整备份。第二天0-22点，每小时进行一次增量备份。每次备份前把上次的完整备份和23次增量备份移动到指定目录里，保留7天的数据。
ps:不要问我，为什么是23点执行完整备份，0点不更好处理吗？bingo，这是我们的业务需求，呵呵，不能说太细，你懂得。不要问我，为啥用不用shell，至少不用写subprocess.call来调系统命令。我只能说，我乐意，你管的着？哈哈！
#-*- coding: UTF-8 -*-
#!/usr/bin/Python
#====================================================
# Author: gaochenchao - EMail:[email protected]
# Last modified: 2015-2-5
# Filename: innobackup.py
# Description: backup mysql files,base percona xtrabackup
# blog:gccmx.blog.51cto.com
#====================================================
import datetime
import subprocess
import os
import sys
import logging
logging.basicConfig(level=logging.DEBUG,
format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s',
datefmt='%a, %d %b %Y %H:%M:%S',
filename='backup.log',
filemode='a')
backuser = 'bkuser'
backpass = 'bk2015'
basedir = '/mnt/backups'
tomorrowdate = datetime.date.fromordinal(datetime.date.today().toordinal()+1).strftime("%y%m%d")
todaydate = datetime.datetime.now().strftime("%y%m%d")
fullback_dir = "%s/%s" %(basedir,tomorrowdate)
cuhour = datetime.datetime.now().strftime("%H")
#cuhour = sys.argv[1]
increment_dir = '%s/%s' %(basedir,cuhour)
increbase_dir=''
stores = '/mnt/stores'
#转储老的备份数据，移动到以当前年月日命名的文件夹内，目录如150209-bak
def storebefore():
suffix = datetime.datetime.now().strftime("%y%m%d")
storedir = "%s/%s-bak" %(stores,suffix)
if not os.path.exists(storedir):
subprocess.call("mkdir -p %s" %(storedir),shell=True)
command = "cd %s && mv * %s" %(basedir,storedir)
subprocess.call(command,shell=True)
# 删除转储目录中超过7天的备份数据
def cleanstore():
command = "find %s -type d -mtime +7 |xargs rm -fr" % stores
subprocess.call(command,shell=True)
# 备份方法，每天23点完整备份，第二天0-22点增量备份
def backup():
if not os.path.exists(basedir):
subprocess.call("mkdir -p %s"%basedir,shell=True)
commandfull = "innobackupex --user=%s --password=%s --no-timestamp %s" %(backuser,backpass,fullback_dir)
if cuhour == '23':
storebefore()
subprocess.call("rm -fr %s/*"%basedir,shell=True)
subprocess.call(commandfull,shell=True)
logging.info(commandfull)
else:
if int(cuhour) - 1 >= 0:
increbase_dir = '%s/%s' %(basedir,str(int(cuhour) - 1))
else:
increbase_dir = "%s/%s" %(basedir,todaydate)
if not os.path.exists(increbase_dir):
logging.info('上次的增量备份目录 [%s] 不存在，终止执行'%increbase_dir)
exit(0)
commandincre = "innobackupex --user=%s --password=%s --no-timestamp --incremental %s --incremental-basedir=%s" %(
backuser,backpass,increment_dir,increbase_dir)
subprocess.call(commandincre,shell=True)
logging.info(commandincre)
if __name__ == '__main__':
backup()
cleanstore()
XtraBackup 的详细介绍：请点这里
XtraBackup 的下载地址：请点这里
