python脚本--简单实现堡垒机登录的过程

jfgdf

之前写的大多数python文章比较粗糙，以后尽量写的深入一点。

1.脚本内容
[iyunv@python ~]# cat blj_login.py

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#!/usr/bin/env python # -*- coding: utf-8 -*- ''' Date:2017-03-11 Author:Bob ''' import os ip_dict = {} n = 0 with open('blj_ip.txt', 'r') as f:     while 1:         n += 1         #遍历文本的每一行内容，长度为0时退出         line = f.readline()         if len(line) == 0:             break         #必须把n转换成str类型，否则在if那段输入的时候会出现死循环         ip_dict[str(n)] = line #print ip_dict while 1:     try:         #把字典的key按照顺序排列，初始化为一个列表         ip_list = sorted(ip_dict.iteritems(), key=lambda x:x[0])         for k, v in ip_list:             #打印列表的key和value             print '{0}: {1}'.format(k,v),             #print '%s: %s' % (k,v),         option = raw_input("Please select server:")         if option in ip_dict.keys():             print ip_dict[option]             user = raw_input("Please input username:").strip()             cmd = 'ssh %s@%s ' % (user, ip_dict[option])             os.system(cmd)         elif option == "exit":             break         else:             print 'wrong number input!'     except ValueError, e:         print 'error' + str(e)

2.存放服务器ip的文本
[iyunv@python ~]# cat blj_ip.txt

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10.1.1.1 10.1.1.2 192.168.182.128

3.验证登录堡垒机的过程
[iyunv@python ~]# python blj_login.py

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1: 10.1.1.1 2: 10.1.1.2 3: 192.168.182.128 Please select server:6 wrong number input! 1: 10.1.1.1 2: 10.1.1.2 3: 192.168.182.128 Please select server:3 192.168.182.128 Please input username:root The authenticity of host '192.168.182.128 (192.168.182.128)' can't be established. RSA key fingerprint is d3:b8:fa:f0:84:48:d9:1d:49:28:0b:d7:61:54:5b:a7. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '192.168.182.128' (RSA) to the list of known hosts. root@192.168.182.128's password: Last login: Sat Mar 11 20:08:25 2017 from 192.168.182.1 [iyunv@localhost ~]# exit logout Connection to 192.168.182.128 closed. 1: 10.1.1.1 2: 10.1.1.2 3: 192.168.182.128 Please select server:exit