Question

谁用过python下ssh包paramiko

Answer 1

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()