python实现远程ssh登录

1、安装库
pip install paramiko

2、函数介绍
导入库
import paramiko

创建客户端
ssh = paramiko.SSHClient()

设置校验
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())

连接登录
ssh.connect(‘192.168.xx.xx’, 22, ‘root’, ‘pwd’)

执行命令
stdin, stdout, stderr = ssh.exec_command(‘pwd’)

读取结果打印
str1 = stdout.read().decode(‘utf-8’)
print(str1)

关闭ssh客户端
ssh.close()

3、代码编写

import paramiko

ssh = paramiko.SSHClient()

def ssh_login(ip, port, username, passwd):
    global ssh
    ssh = paramiko.SSHClient()
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    ssh.connect(ip, port, username, passwd)
    return
    
def ssh_exe_cmd(cmd):
    global ssh
    stdin, stdout, stderr = ssh.exec_command(cmd)
    str1 = stdout.read().decode('utf-8')
    print(str1)
    return
    
def main():
    ssh_login('192.168.73.176', 22, 'z', 'z')
 
    ssh_exe_cmd('pwd')
    ssh_exe_cmd('ifconfig')
    
    ssh.close()
    return

main()

4、执行结果

5、项目实战
需求：
测试远程主机ssh能登录多少ssh

import paramiko
import time

def ssh_login(ip, port, username, passwd):
    ssh = paramiko.SSHClient()
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    ssh.connect(ip, port, username, passwd)
    return
    

def test_ssh_login():
    i = 0
    while(1):
        i = i + 1
        print("登录个数：", i)
        ssh_login('192.168.73.176', 22, 'z', 'z')
        #time.sleep(0.01)
    
def main():
    test_ssh_login()

    return

main()