计划任务备份网站，采用FTP存储失败？

两个VPS都采用宝塔面板，就叫 VPS_A 和 VPS_B 吧。
VPS_A用宝塔开通FTP，用WinSCP登陆上传正常。
VPS_B是被备份的网站，计划任务执行备份是用VPS_A创建的FTP账号密码，可惜失败。
日志如下：

1. Traceback (most recent call last):
   
2.   File "/www/server/panel/plugin/ftp/ftp_main.py", line 237, in
   
3.     data = backup.backupDatabase(sys.argv[2], sys.argv[3])
   
4.   File "/www/server/panel/plugin/ftp/ftp_main.py", line 123, in backupDatabase
   
5.     self.updateFtp(filename);
   
6.   File "/www/server/panel/plugin/ftp/ftp_main.py", line 178, in updateFtp
   
7.     ftp.storbinary('STOR %s' % os.path.basename(filename),file_handler,bufsize)
   
8.   File "/usr/lib64/python2.7/ftplib.py", line 471, in storbinary
   
9.     conn = self.transfercmd(cmd, rest)
   
10.   File "/usr/lib64/python2.7/ftplib.py", line 376, in transfercmd
    
11.     return self.ntransfercmd(cmd, rest)[0]
    
12.   File "/usr/lib64/python2.7/ftplib.py", line 335, in ntransfercmd
    
13.     conn = socket.create_connection((host, port), self.timeout)
    
14.   File "/usr/lib64/python2.7/socket.py", line 571, in create_connection
    
15.     raise err
    
16. socket.error: [Errno 110] Connection timed out
    

复制代码

Connection timed out
两边的服务器连接不上导致 连接超时了