python3|python3 paramiko 巡检网络设备 python3paramiko巡检网络设备

用paramiko做网络设备巡检，发现大坑，就是show run这种看配置有多页存在的没法显示第二页，没找到paramiko翻页的地方，添加多个空格也不是很好使。

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避开这个坑，自动登入搞定了后面命令怎么传都是小事了，传参参考第二个脚本吧。

cisco的全页打印显示配置信息的命令：terminal length 0 show run华为和H3C的全页打印显示配置信息的命令：user-interface vty 0 4 screen-length 0 display current-configuration

直接在命令里面传入全局模式密码。

#!/usr/bin/python3 # -*- coding:utf-8 -*-import paramiko import timedef main(host, username, password, commands): client = paramiko.SSHClient() client.set_missing_host_key_policy(paramiko.AutoAddPolicy()) client.connect(host, username=username, password=password, port=22, allow_agent=False, look_for_keys=False) channel = client.invoke_shell()# 请求交互式Shell会话 for command in commands: channel.send(command + "\n")# 发送指令 while not channel.recv_ready():# 等待数据到达 time.sleep(1) output = channel.recv(40960)# 从通道接收数据 nbytes（int）–读取的最大字节数 print(output.decode()) client.close()if __name__ == '__main__': host = '192.168.208.131' username = 'root' password = 'root.123' commands = ['enable', 'cisco', 'terminal length 0','show run', 'show ip int br', 'exit']#全页打印terminal length 0 main(host, username, password, commands)

commands = ['enable', 'cisco', ,'show run', ' ',' ', 'exit']

多添加几个空格还是没有解决翻页的问题

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最早用pexpect写的，可以避开这个坑，就是灵活性太低。遇到ssh公钥改变的就连不上了，每个厂家都要重写。。。。。

#!/usr/bin/python #-*- coding:utf-8 -*-import pexpect import sys import timedef main(host,username,password,enable,commands): # host = '192.168.208.131' # username = 'root' # password = 'root.123' # enable = 'cisco' # commands = [ show processes memory ] commands = str(commands).split('; ') child = pexpect.spawnu('ssh %s@%s' % (username,host)) child.logfile = sys.stdout login = child.expect(['yes/no', '[P|p]assword:', pexpect.EOF, pexpect.TIMEOUT]) if login == 0: child.sendline('yes') child.expect('[P|p]assword:') child.sendline('%s' % password) elif login == 1: child.sendline('%s' % password) child.expect('\>') child.sendline('enable') child.expect('[P|p]assword:') child.sendline('%s' % enable) for command in commands: child.expect('\#') child.sendline('%s' % command) index = child.expect(['--More--','\#']) if index == 0: for i in range(5): child.send(' ') time.sleep(1) #child.sendline(' ') child.sendline('') #time.sleep(2) child.expect('\#') child.sendline('exit') child.close()if __name__ == '__main__': host = sys.argv[1] username = sys.argv[2] password = sys.argv[3] enable = sys.argv[4] commands = sys.argv[5] main(host,username,password,enable,commands)

测试用的是eve和GNS3 ，网络模拟器我玩的贼6.。。。。
pexpect 又开始踩坑，模拟器每次开起来公钥就变了，就登不上了，生产环境极少概率会这样旧设备替换啥的，想想还是放弃这个，后面不知道会遇到多少坑。