python中paramiko模块的使用

paramiko是python一个模块,遵循SSH2协议,支持以加密和认证的方式,进行远程服务器的连接
1、可以远程操作服务器文件

例如:
df:查看磁盘使用情况
mkdir:创建目录
mv/cp/mkdir/rmdir:对文件或目录进行操作
/sbin/service/ xxxservice start/stop/restart:启动、停止、重启某服务
netstat -ntl |grep 8080:查看8080端口的使用情况
或者 nc -zv localhost :查看所有端口的使用情况
find / -name XXX:查找某文件 等等

2、可以实现远程文件的上传,下载(类似于ssh的scp功能)

首先安装paramiko
pip install paramiko
但是安装paramiko需要先安装一个依赖包叫PyCrypto的模块。PyCrypto是python编写的加密工具包,支持的各种加密算法(主要有:MD2 128 bits;MD4 128 bits;MD5 128 bits;RIPEMD 160 bits;SHA1 160 bits;SHA256 256 bits;AES 16, 24, or 32 bytes/16 bytes;ARC2 Variable/8 bytes;Blowfish Variable/8 bytes;CAST Variable/8 bytes;DES 8 bytes/8 bytes ;DES3 (Triple DES) 16 bytes/8 bytes;IDEA 16 bytes/8 bytes ;RC5 Variable/8 bytes等等。)

具体实例代码如下:
1、实现简单的命令操作

 1 #!/usr/bin/env python
 2 # -*- coding:utf-8 -*-
 3 
 4 import paramiko
 5 
 6 #创建ssh对象
 7 ssh = paramiko.SSHClient()
 8 
 9 #允许连接不在know_host中的主机
10 ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
11 
12 #连接服务器
13 ssh.connect(hostname='192.168.1.1',port=22,username='user',password='pwd')
14 
15 #执行命令
16 stdin, stdout, stderr = ssh.exec_command('cd home;ls -l')
17 
18 #执行结果
19 #result = stderr.read() #如果有错误则打印
20 result = stdout.read()
21 print result
22 #关闭连接
23 ssh.close()

 2、实现远程上传

 1 #!/usr/bin/env python
 2 # -*- coding:utf-8 -*-
 3 # Author:Eric.yue
 4 
 5 import paramiko,os
 6 
 7 class Paramiko_put(object):
 8     def __init__(self,local_dir,remote_dir):
 9         self.host = '192.168.1.1'
10         self.username = 'user'
11         self.passwd = 'pwd'
12         self.port = 22
13         self.local_dir = local_dir
14         self.remote_dir = remote_dir
15         self.tt = None
16 
17     def pk_connect(self):
18         self.tt = paramiko.Transport((self.host, self.port))
19         self.tt.connect(username = self.username, password = self.passwd)
20         try:
21             return paramiko.SFTPClient.from_transport(self.tt)
22         except Exception as e:
23             print 'Connect error:',e
24             exit()
25 
26     def put_file(self):
27         sftp = self.pk_connect()
28         files = os.listdir(self.local_dir)
29         cnt = 0
30         for file in files:
31             sftp.put(os.path.join(self.local_dir, file), os.path.join(self.remote_dir, file))
32             cnt += 1
33 
34         if cnt == len(files):
35             print str(cnt) +' files put successful'
36         else:
37             print 'put failure'
38 
39     def __del__(self):
40         self.tt.close()
41 
42 pk = Paramiko_put('/home/mywork/test/day8','/home/mywork/test/day8')
43 pk.put_file()

 3、实现远程下载

 1 #!/usr/bin/env python
 2 # -*- coding:utf-8 -*-
 3 # Author:Eric.yue
 4 
 5 
 6 import paramiko,os
 7 
 8 class Paramiko_get(object):
 9     def __init__(self,remote_dir,local_dir):
10         self.host = '192.168.1.1'
11         self.username = 'user'
12         self.passwd = 'pwd'
13         self.port = 22
14         self.local_dir = local_dir
15         self.remote_dir = remote_dir
16         self.tt = None
17 
18     def pk_connect(self):
19         self.tt = paramiko.Transport((self.host, self.port))
20         self.tt.connect(username = self.username, password = self.passwd)
21         try:
22             return paramiko.SFTPClient.from_transport(self.tt)
23         except Exception as e:
24             print 'Connect error:',e
25             exit()
26 
27     def get_file(self):
28         sftp = self.pk_connect()
29         files = sftp.listdir(self.remote_dir)
30         cnt = 0
31         for file in files:
32             sftp.get(os.path.join(self.remote_dir, file),os.path.join(self.local_dir, file))
33             cnt += 1
34 
35         if cnt == len(files):
36             print str(cnt) +' files get successful'
37         else:
38             print 'get failure'
39 
40     def __del__(self):
41         self.tt.close()
42 
43 pk = Paramiko_get('/home/inf/mywork/day8','/home/mywork/day8')
44 pk.get_file()

 温馨提示:实现上传下载功能时要保证目录存在,有可操作权限哦!

posted @ 2016-12-07 16:26  北京流浪儿  阅读(3414)  评论(0编辑  收藏  举报