需求
在自动化测试
场景里, 有时需要在代码里获取远程服务器的某些数据, 或执行一些查询命令,如获取Linux系统版本号 \ 获取CPU及内存的占用等, 本章记录一下使用paramiko模块SSH连接服务器的方法
1. 先安装paramiko库
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pip3 install paramiko |
2. 代码
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#!/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 paramiko class 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() |
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原文链接:https://blog.csdn.net/qq_42183962/article/details/114323336