使用python备份VPS上的网站文件及数据库 1.0

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 osimport sysimport zipfileimport socketimport commandsfrom datetime import date,datetime,timedeltafrom 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()