python-netmiko+openpyxl实现周期进行网络设备运行信息采集并存储至excel

一、代码段

import datetime
import time
from netmiko import ConnectHandler
from openpyxl import Workbook

wb = Workbook() #创建excel文件对象
ws = wb.active	#创建excel文件对象中sheet页

dev = {'device_type':'cisco_ios',
       'host':'192.168.1.1',
       'username':'telecomadmin',
       'password':'nE7jA%5m',
       'port':22}
i = 1
while True:
    test1 = str('A')+str(i)
    test2 = str('B')+str(i)
    test3 = str('C')+str(i)
    test4 = str('D')+str(i)
    ws[test1] = datetime.datetime.now()
    with ConnectHandler(**dev) as conn:
        conn.send_command(command_string='enable', expect_string=r'host#')
        ws[test2] = conn.send_command(command_string='show version all', expect_string=r'host#')
        ws[test3] = conn.send_command(command_string='show cpu usage', expect_string=r'host#')
        ws[test4] = conn.send_command(command_string='show memory usage', expect_string=r'host#')
        wb.save("test.xlsx")
    i = i + 1
    time.sleep(30)

二、代码解析

2.1 获取当前时间

import datetime
ws[test1] = datetime.datetime.now()

2.2 周期运行脚本

import time
time.sleep(30)

2.3 网络设备登录

from netmiko import ConnectHandler

#定义ssh登录函数dev
dev = {'device_type':'cisco_ios',
       'host':'192.168.1.1',
       'username':'telecomadmin',
       'password':'nE7jA%5m',
       'port':22}

#将dev实例化成conn，以便conn.引用各种函数
with ConnectHandler(**dev) as conn:
	conn.send_command(command_string='enable', expect_string=r'host#')

2.4 网络设备信息采集

        需要先经过2.3网络设备登录，然后才能对网络设备进行cli命令行操作

        conn.send_command(command_string='enable', expect_string=r'host#')
        ws[test2] = conn.send_command(command_string='show version all', expect_string=r'host#')
        ws[test3] = conn.send_command(command_string='show cpu usage', expect_string=r'host#')
        ws[test4] = conn.send_command(command_string='show memory usage', expect_string=r'host#')

2.5 将采集信息保存到excel文件中

from openpyxl import Workbook

wb = Workbook() #创建excel文件对象
ws = wb.active	#创建excel文件对象中sheet页

i = 1 #初始化，整型
while True:
    test1 = str('A')+str(i) #定义变量test并赋值，因为i初始化为整型，所以先对其str转换成字符串，再用字符串拼接到A/B/C/D上去。即A1、B1、C1、D1.excel表格中，sheet页中的定位坐标
    test2 = str('B')+str(i)
    test3 = str('C')+str(i)
    test4 = str('D')+str(i)
    ws[test1] = ?? #将？？表示的内容赋值给定位坐标
    ws[test2] = ??
    ws[test3] = ??
    ws[test4] = ??
    wb.save("test.xlsx") #保存excel文件对象
    i = i + 1 #下一周期就是A2、B2、C2、D2，以此类推

三、存储路径

        采用os命令可以查看该python脚本的运行路径

import os
os.getcwd()

        如下是具体运行路径即excel文档存储路径

C:\Users\Administrator\PycharmProjects\pythonProject2\venv\Scripts\python.exe 
C:/Users/Administrator/PycharmProjects/pythonProject2/main.py

        查看存储文件中的内容