自学教程：Python使用paramiko连接远程服务器执行Shell命令的实现

pip3 install paramiko

#!/usr/bin/env python# coding=utf-8"""# :author: Terry Li# :url: https://blog.csdn.net/qq_42183962# :copyright: © 2020-present Terry Li# :motto: I believe that the God rewards the diligent."""import paramikoclass cfg:	host = "192.168.2.2"	user = "root"	password = "123456"class sshChannel:	def __init__(self, cfg_obj, timeout_s=5, port=22):		self._cfg = cfg_obj		self.ssh_connect_timeout = timeout_s		self.port = port		self.ssh = self.connect_server()	def connect_server(self):		ssh_cli = paramiko.SSHClient()		key = paramiko.AutoAddPolicy()		ssh_cli.set_missing_host_key_policy(key)		try:			ssh_cli.connect(self._cfg.host, port=self.port, username=self._cfg.user, password=self._cfg.password,							timeout=self.ssh_connect_timeout)		except paramiko.ssh_exception.SSHException:			print("连接{}失败, 请检查配置或重试".format(self._cfg.host))			ssh_cli.close()		return ssh_cli	def execute_cmd(self, cmd):		"""		:param cmd: 单个命令		:return: 服务器的输出信息		"""		stdin, stdout, stderr = self.ssh.exec_command(cmd)		self.ssh.close()		return stdout.read().decode('utf-8')	def execute_cmd_list(self, cmd_list):		"""		:param cmd: 命令列表		:return: 服务器的输出信息的列表		"""		out_list = list(map(self.execute_cmd, cmd_list))		return out_list	def test_get_sys_version(self):		sys_version = self.execute_cmd("lsb_release -rd")		print(sys_version)	def test_get_sys_disk_free_and_memory_free(self):		sys_info = self.execute_cmd_list(["df -h -BG /", "free -m"])		print(sys_info)		if __name__ == '__main__':	server = sshChannel(cfg)	server.test_get_sys_version()	server.test_get_sys_disk_free_and_memory_free()