python中的paramiko模块可以实现远程登陆主机执行命令或通过sftp上传下载文件。


本文分享二个小程序,用于说明python paramiko模块的使用方法。


1,python paramiko模块 连接远程linux主机并执行命令.

例子:

代码示例:#!/usr/bin/env python

#edit: www.jbxue.com

#

import paramiko  

hostname='192.168.0.102'  

username='root'  

password='abc'  

port=22    

paramiko.util.log_to_file('paramiko.log')          

s=paramiko.SSHClient()                

s.set_missing_host_key_policy(paramiko.AutoAddPolicy())          

s.connect(hostname = hostname,port=port,username=username, password=password)          

stdin,stdout,stderr=s.exec_command('free;df -h')          

print stdout.read()          

s.close()

执行结果:



            total       used       free     shared    buffers     cached

Mem:       2074940    2057420      17520          0      42416    1867968

-/+ buffers/cache:     147036    1927904

Swap:      2096472        240    2096232

Filesystem            Size  Used Avail Use% Mounted on

/dev/sda1              30G   12G   17G  42% /

none                 1014M     0 1014M   0% /dev/shm

/dev/sda3             2.0G  289M  1.6G  16% /var

/dev/sdb1             135G   14G  115G  11% /data

/dev/sdc1             135G  127G  880M 100% /data1

/dev/sdd1             135G   99G   30G  78% /data2

2,paramiko模块 连接远程linux主机并上传下载文件(paramiko模块是用SFTP协议来实现的)

代码示例:#!/usr/bin/env python  

#edit: www.jbxue.com

#

import paramiko,datetime,os

hostname='192.168.0.102'  

username='root'  

password='abc123'  

port=22  

local_dir='/tmp/'  

remote_dir='/tmp/test/'

try:

   t=paramiko.Transport((hostname,port))          

   t.connect(username=username,password=password)          

   sftp=paramiko.SFTPClient.from_transport(t)  

   #files=sftp.listdir(dir_path)          

   files=sftp.listdir(remote_dir)          

   for f in files:                  

       print ''                  

       print '#-------------------------------------------------'                  

       print 'Beginning to download file  from %s  %s ' % (hostname,datetime.datetime.now())                

       print 'Downloading file:',os.path.join(remote_dir,f)

       sftp.get(os.path.join(remote_dir,f),os.path.join(local_dir,f))#下载              

       #sftp.put(os.path.join(local_dir,f),os.path.join(remote_dir,f))#上传                

       print 'Download file success %s ' % datetime.datetime.now()        

       print ''                  

       print '#-------------------------------------------------'  

   t.close()

except Exception:  

      print "connect error!"

执行结果:



#-------------------------------------------------  

Beginning to download file  from 192.168.0.102  2012-11-05 15:49:01.334686  

Downloading file: /tmp/test/wgetrc Download file success 2012-11-05 15:49:05.955184  

#-------------------------------------------------  


#-------------------------------------------------  

Beginning to download file  from 192.168.0.102  2012-11-05 15:49:05.955342  

Downloading file: /tmp/test/xinetd.conf Download file success 2012-11-05 15:49:10.929568  

#-------------------------------------------------  


#-------------------------------------------------  

Beginning to download file  from 192.168.0.102  2012-11-05 15:49:10.929740  

Downloading file: /tmp/test/warnquota.conf Download file success 2011-12-05 15:49:14.213570  

#-------------------------------------------------

更多用法,请参考官方文档:http://www.lag.net/paramiko/docs/