循序渐进Python3（十）-- 4 -- paramiko

paramiko模块，基于SSH用于连接远程服务器并执行相关操作。

使用

（1）SSHClient

用于连接远程服务器并执行基本命令

基于用户名密码连接：

#!/usr/bin/env python
# Version = 3.5.2
# __auth__ = '无名小妖'
import paramiko

# 创建SSH对象
ssh = paramiko.SSHClient()
# 允许连接不在know_hosts文件中的主机
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
# 连接服务器
ssh.connect(hostname='192.168.168.231', port=22, username='oracle', password='oracle')

# 执行命令
stdin, stdout, stderr = ssh.exec_command('ls')
# 获取命令结果
result = stdout.read()
print(result.decode())
# 关闭连接
ssh.close()

-----------------

使用transport ：

#!/usr/bin/env python
# Version = 3.5.2
# __auth__ = '无名小妖'
import paramiko

transport = paramiko.Transport(('192.168.168.231', 22))
transport.connect(username='oracle', password='oracle')

ssh = paramiko.SSHClient()
ssh._transport = transport

stdin, stdout, stderr = ssh.exec_command('df')
print(stdout.read().decode())

transport.close()

--------------------------

（2）SFTPClient
用于连接远程服务器并执行上传下载
基于用户名密码上传下载：

import paramiko
  
transport = paramiko.Transport(('192.168.168.231',22))
transport.connect(username='root',password='123456')
  
sftp = paramiko.SFTPClient.from_transport(transport)
# 将location.py 上传至服务器 /tmp/test.py
sftp.put('/tmp/location.py', '/tmp/test.py')
# 将remove_path 下载到本地 local_path
sftp.get('remove_path', 'local_path')
  
transport.close()

---------------------------------------------------------------------
基于公钥密钥连接：
import paramiko
  
private_key = paramiko.RSAKey.from_private_key_file('/home/auto/.ssh/id_rsa')
  
# 创建SSH对象
ssh = paramiko.SSHClient()
# 允许连接不在know_hosts文件中的主机
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
# 连接服务器
ssh.connect(hostname='c1.salt.com', port=22, username='wupeiqi', key=private_key)
  
# 执行命令
stdin, stdout, stderr = ssh.exec_command('df')
# 获取命令结果
result = stdout.read()
  
# 关闭连接
ssh.close()
-------------------------------------------------------------------------
基于公钥密钥上传下载：
import paramiko
  
private_key = paramiko.RSAKey.from_private_key_file('/home/auto/.ssh/id_rsa')
  
transport = paramiko.Transport(('hostname', 22))
transport.connect(username='wupeiqi', pkey=private_key )
  
sftp = paramiko.SFTPClient.from_transport(transport)
# 将location.py 上传至服务器 /tmp/test.py
sftp.put('/tmp/location.py', '/tmp/test.py')
# 将remove_path 下载到本地 local_path
sftp.get('remove_path', 'local_path')
  
transport.close() 
-------------------------------------------------------------------------------------

实用小例子：(使用transport既执行命令又上传下载文件)

#!/usr/bin/env python
# Version = 3.5.2
# __auth__ = '无名小妖'
import paramiko


class SSHConnection(object):

    def __init__(self, host='192.168.168.231', port=22, username='oracle', pwd='oracle'):
        self.host = host
        self.port = port
        self.username = username
        self.pwd = pwd
        self.__k = None

    def run(self):
        self.connect()
        pass
        self.close()

    def connect(self):
        transport = paramiko.Transport((self.host,self.port))
        transport.connect(username=self.username,password=self.pwd)
        self.__transport = transport

    def close(self):
        self.__transport.close()

    def cmd(self, command):
        ssh = paramiko.SSHClient()
        ssh._transport = self.__transport
        # 执行命令
        stdin, stdout, stderr = ssh.exec_command(command)
        # 获取命令结果
        result = stdout.read()
        return result

    def upload(self,local_path, target_path):
        # 连接，上传
        sftp = paramiko.SFTPClient.from_transport(self.__transport)
        # 将location.py 上传至服务器 /tmp/test.py
        sftp.put(local_path, target_path)

ssh = SSHConnection()
ssh.connect()
r1 = ssh.cmd('df')
print(r1.decode())
ssh.upload('class12.py', "test.py")
ssh.close()

-------------------------------------------------------------------

实现远程登录并进行操作

#!/usr/bin/env python
# Version = 3.5.2
# __auth__ = '无名小妖'
import paramiko
import sys
import os
import socket
import select
import getpass
from paramiko.py3compat import u

tran = paramiko.Transport(('192.168.191.3', 22,))
tran.start_client()
tran.auth_password('root', '7ujm8ik,')

# 打开一个通道
chan = tran.open_session()
# 获取一个终端
chan.get_pty()
# 激活器
chan.invoke_shell()

while True:
    # 监视用户输入和服务器返回数据
    # sys.stdin 处理用户输入
    # chan 是之前创建的通道，用于接收服务器返回信息
    readable, writeable, error = select.select([chan, sys.stdin, ], [], [], 1)
    if chan in readable:
        try:
            x = u(chan.recv(1024))
            if len(x) == 0:
                print('
*** EOF
')
                break
            sys.stdout.write(x)
            sys.stdout.flush()
        except socket.timeout:
            pass
    if sys.stdin in readable:
        inp = sys.stdin.readline()
        chan.sendall(inp)

chan.close()
tran.close()

参考文档 ：

http://www.cnblogs.com/wupeiqi/articles/5699254.html  

来自为知笔记(Wiz)