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
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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