python之paramiko(一)

[简介]

　　paramiko是用python语言写的一个模块，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。paramiko支持Linux, Solaris, BSD, MacOS X, Windows等平台通过SSH从一个平台连接到另外一个平台。利用该模块，可以方便的进行ssh连接和sftp协议进行sftp文件传输。

[root@centos6 auto_maintance]# cat paramiko_key.py

#!/usr/bin/env python
# function: remote multi exec cmd by ssh.
# version:1.1

import paramiko
import socket
import sys,os

host = sys.argv[1]
user = sys.argv[2]
port = int(sys.argv[3])

authen_method = sys.argv[4]
if authen_method == 'PASSWORD':
    password = sys.argv[5]
    cmd = sys.argv[6]
else:
    cmd = sys.argv[5]
    ss = paramiko.SSHClient()
    ss.load_system_host_keys()
    ss.set_missing_host_key_policy(paramiko.AutoAddPolicy())
#pkey_file = '/home/alex/.ssh/id_rsa'
#key = paramiko.RSAKey.from_private_key_file(pkey_file)
#s.connect(host,port,username,pkey=key,timeout=5)
try:
if authen_method == 'SSH_KEY':
    pkey_file = '/root/.ssh/id_rsa'
    key = paramiko.RSAKey.from_private_key_file(pkey_file)
    ss.connect(host,port,user,pkey=key,timeout=5)
elif authen_method == 'PASSWORD':
    ss.connect(host,port,user,password,timeout=5)
    stdin,stdout,stderr = s.exec_command(cmd)
    cmd_result = stdout.read(),stderr.read()
print "--------Result from: %s -------" % host
for line in cmd_result:
    print line,
ss.close()
except paramiko.AuthenticationException:
    print "\033[31;1m%s Authentication Error!\033[0m" % host
except socket.error:
    print "\033[31;1m%s Connection Refused!\033[0m" % host