check_mgmt_vlan.py

#!/usr/bin/env python3

import re

from getpass import getpass

import yaml

from netmiko.cisco import CiscoIosSSH
from netmiko.ssh_exception import NetmikoTimeoutException
from jinja2 import Template


console_output_tmpl = """
ip address: {{ device.ip }}
tacacs source vlan: {{ device.svlan }}
"""


def check_mgmt_vlan_by_source(username, password, list_of_ips):

    template = Template(console_output_tmpl)

    for ip in list_of_ips:

        t_source = ""
        try:
            net_connect = CiscoIosSSH(
                host=ip,
                username=username,
                password=password,
                device_type='cisco_ios'
            )

            t_source = net_connect.send_command("show run | inc ip tacacs source")

            vlan = re.search(r'[0-9]{3,4}', t_source)

            device_dict = {
                "ip": ip,
                "svlan": vlan.group()
            }

            print(template.render(device=device_dict))

        except NetmikoTimeoutException as e:
            print(e)

idaho_vtp = []

with open('hosts.yml', 'r') as yfile:
    dictionary = yaml.load(yfile, Loader=yaml.Loader)

    [ idaho_vtp.append(host) for host in dictionary['all']['children']['Gowen']['children']['VTPIdaho']['hosts'].keys() ]



username = str(input("Please enter your username: "))
password = getpass()

check_mgmt_vlan_by_source(username, password, idaho_vtp)