python备份VPS的网站文件及数据库的解决办法

这篇文章主要为大家详细介绍了python备份VPS的网站文件及数据库的简单示例，具有一定的参考价值，可以用来参考一下。

学python有一段时间了，花了两天时间写了个备份的脚本。可以将Linux vps上的网站目录及数据库全部导出一份到远程FTP服务器上，再配置crontab实现每天的自动备份。功能上跟imcat的这个备份脚本是一样的，但程序比imcat的健壮多了，加入了N多自动判断，不会导致程序轻易出错。

代码仅适于python2，不适用于python3。因为调用了压缩模块，还需要yum install zlib zlib-devel

最后，需要强调的，此段代码是个python菜鸟写出来的，还望路过的大侠指点一二，切莫贱笑！

#!/usr/bin/python
# -*- coding: utf-8 -*-
import os
import sys
import zipfile
import socket
import commands
from datetime import date,datetime,timedelta
from ftplib import FTP

########你需要修改的地方开始#########
website_dir='/home/wwwroot' #你的网站目录
backup_dir='/home/backup' #本地的备份目录（即要把备份文件放在哪里）
mysql_user='root' #mysql用户名
mysql_password='xxxxx' #mysql密码
ftp_server='xx.xx.xx.xx' #远程FTP服务器地址
ftp_user='xxxxx' #远程FTP用户名
ftp_password='xxxxx' #远程FTP密码
ftp_backup_dir='backup' #远程FTP上要用于备份的目录
########你需要修改的地方结束#########

print("checking backup directory...")
try:
if os.path.isdir(backup_dir):
print("found backup directory " + backup_dir + ", ready to process backup...")
else:
print("don't found backup directory " + backup_dir + ", try to build one...")
os.mkdir(backup_dir)
except IOError, err:
print err
sys.exit()

newday = date.today() #获取今天的日期
oldday = date.today()-timedelta(5) #获得5天前的日期
newfile = backup_dir + '/' + 'backup_data_' + str(newday.year) + '.' + str(newday.month) + '.' + str(newday.day) + '.zip' #本次备份的文件名(绝对路径)
oldfile = backup_dir + '/' + 'backup_data_' + str(oldday.year) + '.' + str(oldday.month) + '.' + str(oldday.day) + '.zip' #5天前备份的文件名(绝对路径)
newdb = backup_dir + '/' + 'backup_db_' + str(newday.year) + '.' + str(newday.month) + '.' + str(newday.day) + '.sql.gz' #本次导出的数据库名
olddb = backup_dir + '/' + 'backup_db_' + str(oldday.year) + '.' + str(oldday.month) + '.' + str(oldday.day) + '.sql.gz' #5天前导出的数据库名

print("today is " + str(newday.year) + "." + str(newday.month) + "." + str(newday.day))

print("delete old backup data...") #删除本机上5天前的备份文件
try:
if os.path.isfile(oldfile):
os.remove(oldfile)
print("found old data at local, deleted it.")
else:
print("doesn't found old data at local, jumped.")
if os.path.isfile(olddb):
os.remove(olddb)
print("found old db at local, deleted it.") 
else:
print("doesn't found old db at local, jumped.")
except IOError, err:
print err
sys.exit()

print("compress your website directory...") #压缩网站目录
try:
f = zipfile.ZipFile(newfile,'w',zipfile.ZIP_DEFLATED)
for dirpath, dirnames, filenames in os.walk(website_dir):
for filename in filenames:
f.write(os.path.join(dirpath,filename))
f.close()
print("compressed webiste directory completely! file name is " + newfile)
except IOError, err:
print err
sys.exit()

print("export your databases...") #导出数据库
try:
cmd1 = "mysqldump -u" + mysql_user + " -p" + mysql_password + " --all-databases | gzip > " + newdb
h = commands.getstatusoutput(cmd1)
if h[0] == 0:
print("export databases successful, continue processing...")
else:
print("export databases failed. please check your mysql username or password, or check mysql server status.")
sys.exit()
except IOError, error:
print error
sys.exit()

print("prepare upload your backup data to remote ftp server...")

def upload():
socket.setdefaulttimeout(60) #超时FTP时间设置为60秒
ftp = FTP(ftp_server)
print("login ftp...")
try:
ftp.login(ftp_user, ftp_password) #登陆FTP
print(ftp.getwelcome().decode("GB2312").encode("UTF-8")) #获得欢迎信息

try:
if ftp_backup_dir in ftp.nlst():
print("found backup folder in ftp server, upload processing.")
else:
print("doesn't found backup folder in ftp server, try to build it.")
ftp.mkd(ftp_backup_dir)
except:
print("the folder " + ftp_backup_dir + " doesn't exist and can't be create!")
sys.exit()
except:
print("ftp login failed. exit.")
sys.exit()
ftp.cwd(ftp_backup_dir) #设置FTP路径

print("upload data...")
try:
ftp.storbinary('STOR ' + os.path.basename(newfile), open(newfile,'rb'), 1024) #上传备份文件
ftp.storbinary('STOR ' + os.path.basename(newdb), open(newdb,'rb'), 1024) #上传导出的数据库
except:
print("upload failed. check your permission.")
sys.exit()

print("delete old file...")
if os.path.basename(oldfile) in ftp.nlst():
ftp.delete(os.path.basename(oldfile)) #删除5天前的备份文件
print("found old data file at ftp server, deleted it.")
else:
print("doesn't found old file at ftp server, jumped.")
if os.path.basename(olddb) in ftp.nlst():
ftp.delete(os.path.basename(olddb))
print("found old db file at ftp server, deleted it.")
else:
print("doesn't found old db at ftp server, jumped.")

print("ftp upload successful. exit...")
ftp.quit()

if __name__== '__main__':
upload()
# 来自www.idcnote.com 

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