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来实现。
安装：  python3.6 -m pip install paramiko

#!/usr/bin/env python3

# _*_ coding:utf- _*_

import paramiko

ip,port = '10.0.3.60',''

username,password = 'lishichao','

# 创建ssh对象

ssh = paramiko.SSHClient()

# 解决ssh第一次连接,认证问题

ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())

# 连接服务器

ssh.connect(ip,port,username,password)

# 执行命令

stdin,stdout,stderr = ssh.exec_command('hostname')     # stdin 标准输入,  stdout 命令执行的结果， stderr 命令执行错误的结果

# 获取命令结果

ret = stdout.read()

if ret:

    print(ret.decode('utf-8').strip())

else:

    print("命令执行失败")

    print(stderr.read().decode('utf-8').strip())

# 关闭连接

ssh.close()

# 执行结果：

b'docker-server\n'   # byte 类型,需要decode转码

#创建秘钥对

ssh-keygen

# 推送到指定服务器

ssh-copy-id -i .ssh/id_rsa.pub  用户名字@192.168.x.xxx

前提: 分配公钥

import paramiko

# 秘钥文件

private_key = paramiko.RSAKey.from_private_key_file('/root/.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='10.0.3.56', port=, username='root', pkey=private_key)

# 执行命令

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

# 获取命令结果

result = stdout.read()

print(result.decode('utf-8'))

# 关闭连接

ssh.close()

/usr/local/lib/python3./site-packages/paramiko/kex_ecdh_nist.py:: 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())

/usr/local/lib/python3./site-packages/paramiko/kex_ecdh_nist.py:: 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

/usr/local/lib/python3./site-packages/paramiko/kex_ecdh_nist.py:: 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())

警告信息

原因：

paramiko 2.4. 依赖 cryptography，而最新的cryptography==.5里有一些弃用的API。

解决：

删掉cryptography 2.5，安装2.4.2，就不会报错了。

python3 -m pip uninstall cryptography==2.5

python3 -m pip install cryptography==2.4.

解决方法:

import paramiko

transport = paramiko.Transport(('10.0.3.56',))

transport.connect(username='root', password='buguniao123!@#')

sftp = paramiko.SFTPClient.from_transport(transport)

# 将/tmp/test.txt 上传至服务器 /data/test.txt

sftp.put('/tmp/test.txt', '/data/test.txt')

# 将/data/test.txt 下载到本地 /tmp/a.txt

sftp.get('/data/test.txt', '/tmp/a.txt')

transport.close()

import paramiko

private_key = paramiko.RSAKey.from_private_key_file('/root/.ssh/id_rsa')

transport = paramiko.Transport(('10.0.3.56', ))

transport.connect(username='root', pkey=private_key)

sftp = paramiko.SFTPClient.from_transport(transport)

# 将/tmp/haha.txt 上传至服务器 /tmp/a.txt

sftp.put('/tmp/haha.txt', '/tmp/a.txt')

# 将/tmp/a.txt 下载到本地 /root/a.txt

sftp.get('/tmp/a.txt', '/root/a.txt')

transport.close()