python实现ssh连接执行指令的两种方式Demo

python版本：python3.7.4

Demo:

#!/usr/bin/env python
# -*- coding: utf-8 -*-
################################################
#author: SkyJ
#date  : 2019/7/17
################################################

import os
import sys
import string
import datetime
import time
import paramiko   #导入paramiko

hostname = "192.168.1.11"
username = "root"
password = "SkyJ"
cmdList = ['ls -ln', 'df -hn']

#第一种ssh连接执行指令方式
def sshRunCmd(hostname, username, password, cmdList):
    try:
        client = paramiko.SSHClient()
        client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
        #创建ssh连接
        client.connect(hostname=hostname, port=22, username=username, password=password)
        # 开启ssh管道
        ssh = client.get_transport().open_session()
        ssh.get_pty()
        ssh.invoke_shell()
        #执行指令
        for cmd in cmdList:
            ssh.sendall(cmd)
            time.sleep(0.5)
            result = ssh.recv(102400)
            result = result.decode(encoding='UTF-8',errors='strict')
            print (result)
    except Exception as e:
        print ("[%s] %s target failed, the reason is %s" % (datetime.datetime.now(), hostname, str(e)))
    else:
        print ("[%s] %s target success" % (datetime.datetime.now(), hostname))
    finally:
        ssh.close()
        client.close()

#第二种ssh连接执行指令方式
def sshRunCmd2(hostname, username, password, cmdList):
    try:
        client = paramiko.SSHClient()
        client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
        #创建ssh连接
        client.connect(hostname=hostname, port=22, username=username, password=password)
        #执行指令
        for cmd in cmdList:
            stdin, stdout, stderr = client.exec_command(cmd)
            result = stdout.read()
            result = result.decode(encoding='UTF-8',errors='strict')
            print (result)
    except Exception as e:
        print ("[%s] %s target failed, the reason is %s" % (datetime.datetime.now(), hostname, str(e)))
    else:
        print ("[%s] %s target success" % (datetime.datetime.now(), hostname))
    finally:
        client.close()


if __name__ == '__main__':
    sshRunCmd(hostname, username, password, cmdList)
    sshRunCmd2(hostname, username, password, cmdList)

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