Python的网络设备信息采集利器：Netmiko

from netmiko import ConnectHandler
'''
关于netmiko的使用，建议查看官网的说明，

简单的show命令的话，用以下代码即可，注意的是device_type

内置常用的有有以下 请留意左侧的key值，是支持的设备系列。

CLASS_MAPPER_BASE = {
    'a10': A10SSH,
    'accedian': AccedianSSH,
    'alcatel_aos': AlcatelAosSSH,
    'alcatel_sros': AlcatelSrosSSH,
    'apresia_aeos': ApresiaAeosSSH,
    'arista_eos': AristaSSH,
    'aruba_os': ArubaSSH,
    'avaya_ers': AvayaErsSSH,
    'avaya_vsp': AvayaVspSSH,
    'brocade_fastiron': RuckusFastironSSH,
    'brocade_netiron': BrocadeNetironSSH,
    'brocade_nos': BrocadeNosSSH,
    'brocade_vdx': BrocadeNosSSH,
    'brocade_vyos': VyOSSSH,
    'checkpoint_gaia': CheckPointGaiaSSH,
    'calix_b6': CalixB6SSH,
    'ciena_saos': CienaSaosSSH,
    'cisco_asa': CiscoAsaSSH,
    'cisco_ios': CiscoIosSSH,
    'cisco_nxos': CiscoNxosSSH,
    'cisco_s300': CiscoS300SSH,
    'cisco_tp': CiscoTpTcCeSSH,
    'cisco_wlc': CiscoWlcSSH,
    'cisco_xe': CiscoIosSSH,
    'cisco_xr': CiscoXrSSH,
    'coriant': CoriantSSH,
    'dell_force10': DellForce10SSH,
    'dell_os10': DellOS10SSH,
    'dell_powerconnect': DellPowerConnectSSH,
    'dell_isilon': DellIsilonSSH,
    'eltex': EltexSSH,
    'enterasys': EnterasysSSH,
    'extreme': ExtremeSSH,
    'extreme_wing': ExtremeWingSSH,
    'f5_ltm': F5LtmSSH,
    'fortinet': FortinetSSH,
    'generic_termserver': TerminalServerSSH,
    'hp_comware': HPComwareSSH,
    'hp_procurve': HPProcurveSSH,
    'huawei': HuaweiSSH,
    'huawei_vrpv8': HuaweiVrpv8SSH,
    'juniper': JuniperSSH,
    'juniper_junos': JuniperSSH,
    'linux': LinuxSSH,
    'mellanox': MellanoxSSH,
    'mrv_optiswitch': MrvOptiswitchSSH,
    'netapp_cdot': NetAppcDotSSH,
    'netscaler': NetscalerSSH,
    'ovs_linux': OvsLinuxSSH,
    'paloalto_panos': PaloAltoPanosSSH,
    'pluribus': PluribusSSH,
    'quanta_mesh': QuantaMeshSSH,
    'ruckus_fastiron': RuckusFastironSSH,
    'ubiquiti_edge': UbiquitiEdgeSSH,
    'ubiquiti_edgeswitch': UbiquitiEdgeSSH,
    'vyatta_vyos': VyOSSSH,
    'vyos': VyOSSSH,
}
'''

def ssh_dev_exc(dev_type, ip, commands, port=22, 

                 username='readonly', password='readonly'):

    dev_info = {
        'device_type': dev_type,
        'ip': ip,
        'port': port,
        'username': username,
        'password': password
    }

    with ConnectHandler(**dev_info) as dev_connection:
        outputs = []
        for c in commands:
            output = dev_connection.send_command(c)
            outputs.append(output)

        return outputs


if __name__ == '__main__':
    some_dev_ssh_info = {
        'dev_type': 'cisco_nxos',
        'ip': '192.168.1.23',
        'port': 22,
        'username': 'user',
        'password': 'passowrd',
        'commands': ['show int']
    }
    outputs = ssh_dev_exc(**some_dev_ssh_info)
    print(outputs)

from netmiko import SSHDetect, Netmiko
from getpass import getpass

device = {'device_type': 'cisco_nxos',
          'host': 'XXX',
          'port': 'XXX',
          'username': 'admin',
          'password': 'XXX!', }
connection = Netmiko(**device)
in_config_mode = connection.check_config_mode()
print('config mode is :{}'.format(in_config_mode))
# 方法1 进入config model 输入命令，确定expect的字符，可以是正则，保存
connection.config_mode()
connection.send_command('interface eth1/50',expect_string='.*#')
connection.send_command('description configed by netmiko',expect_string='.*#')
connection.save_config()

connection.send_config_set(config_commands=['interface eth1/50','description configed by netmiko in method 2'])

# 方法3 通过文本文件进行配置
connection.send_config_from_file(config_file='config.txt')

from netmiko import SSHDetect, Netmiko

device = {'device_type': 'autodetect',
          'host': 'XXX',
          'port': 'XXX',
          'username': 'root',
          'password': 'XXX', }
guesser = SSHDetect(**device)

best_match = guesser.autodetect()

print('best_match is:{}'.format(best_match))
print('all guessers  is:{}'.format(guesser.potential_matches))

device['device_type'] = best_match
connection = Netmiko(**device)
# 获取回显的前缀，提示符，prompt。
print('prompt is :{}'.format(connection.find_prompt())