python paramiko连接ssh实现命令

paramiko

paramiko是一个用于做远程控制的模块，使用该模块可以对远程服务器进行命令或文件操作，值得一说的是，fabric和ansible内部的远程管理就是使用的paramiko来现实。

安装

pip install paramiko

模块使用

执行命令—用户名+密码

#!/usr/bin/env python
#coding:utf-8
import paramiko
# 建立一个sshclient对象
ssh = paramiko.SSHClient()
# 允许将信任的主机自动加入到host_allow 列表，此方法必须放在connect方法的前面
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
# 调用connect方法连接服务器
ssh.connect('192.168.1.108', 22, 'alex', '123')
# 执行命令
stdin, stdout, stderr = ssh.exec_command('df')
# 结果放到stdout中，如果有错误将放到stderr中
print(stdout.read().decode('utf-8'))
# 关闭连接
ssh.close();

 paramiko\ecdsakey.py:164: CryptographyDeprecationWarning: Support for unsafe construction of public numbers from encoded data will be removed in a future version. Please use EllipticCurvePublicKey.from_encoded_point
  self.ecdsa_curve.curve_class(), pointinfo

paramiko\kex_ecdh_nist.py:39: CryptographyDeprecationWarning: encode_point has been deprecated on EllipticCurvePublicNumbers and will be removed in a future version. Please use EllipticCurvePublicKey.public_bytes to obtain both compressed and uncompressed point encoding.
  m.add_string(self.Q_C.public_numbers().encode_point())

paramiko\kex_ecdh_nist.py:96: CryptographyDeprecationWarning: Support for unsafe construction of public numbers from encoded data will be removed in a future version. Please use EllipticCurvePublicKey.from_encoded_point
  self.curve, Q_S_bytes

paramiko\kex_ecdh_nist.py:111: CryptographyDeprecationWarning: encode_point has been deprecated on EllipticCurvePublicNumbers and will be removed in a future version. Please use EllipticCurvePublicKey.public_bytes to obtain both compressed and uncompressed point encoding.
  hm.add_string(self.Q_C.public_numbers().encode_point())

 原因

paramiko 2.4.2 依赖 cryptography，而最新的cryptography==2.5里有一些弃用的API。

解决

删掉cryptography，安装2.4.2，就不会报错了。

pip uninstall cryptography

pip install cryptography==2.4.2

执行命令 -秘钥

import paramiko
private_key_path = '/home/auto/.ssh/id_rsa'
key = paramiko.RSAKey.from_private_key_file(private_key_path)
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect('主机名 ', 端口, '用户名', key)
stdin, stdout, stderr = ssh.exec_command('df')
print(stdout.read().decode("utf-8"))
ssh.close()

上传下载文件—用户名密码

import os,sys
import paramiko
t = paramiko.Transport(('182.92.219.86',22))
t.connect(username='derek',password='123')
sftp = paramiko.SFTPClient.from_transport(t)
sftp.put('/tmp/test.py','/tmp/test.py')?
t.close()
import os,sys
import paramiko
t = paramiko.Transport(('182.92.219.86',22))
t.connect(username='derek',password='123')
sftp = paramiko.SFTPClient.from_transport(t)
sftp.get('/tmp/test.py','/tmp/test2.py')
t.close()

上传下载文件-用户名秘钥

import paramiko
pravie_key_path = '/home/auto/.ssh/id_rsa'
key = paramiko.RSAKey.from_private_key_file(pravie_key_path)
t = paramiko.Transport(('182.92.219.86',22))
t.connect(username='derek',pkey=key)
sftp = paramiko.SFTPClient.from_transport(t)
sftp.put('/tmp/test3.py','/tmp/test3.py')?
t.close()
import paramiko
pravie_key_path = '/home/auto/.ssh/id_rsa'
key = paramiko.RSAKey.from_private_key_file(pravie_key_path)
t = paramiko.Transport(('182.92.219.86',22))
t.connect(username='derek',pkey=key)
sftp = paramiko.SFTPClient.from_transport(t)
sftp.get('/tmp/test3.py','/tmp/test4.py')?
t.close()

来源：https://blog.51cto.com/wangfeng7399/2376115