Netmiko:AttributeError:'NoneType'对象没有属性'recv_ready'

时间:2018-10-24 12:37:39

标签: python-3.x cisco-ios

我正在尝试连接到Cisco路由器以获取一些信息,并且在运行代码时收到以下错误:

回溯(最近通话最近):   在第72行中输入文件“ ./cisco_auto_back_up_v4.py”     重新分发(net_connect,device_type = target_device ['device_type'])   重新分发中的文件“ /home/ipautowppprod/.pyenv/versions/3.6.5/lib/python3.6/site-packages/netmiko/ssh_dispatcher.py”,第208行     obj.session_preparation()   在session_preparation中的第16行,文件“ /home/ipautowppprod/.pyenv/versions/3.6.5/lib/python3.6/site-packages/netmiko/cisco/cisco_ios.py”     self._test_channel_read(pattern = r'[>#]')   _test_channel_read中的第791行“ /home/ipautowppprod/.pyenv/versions/3.6.5/lib/python3.6/site-packages/netmiko/base_connection.py”     new_data + = self._read_channel_timing()   _read_channel_timing中的第494行的文件“ /home/ipautowppprod/.pyenv/versions/3.6.5/lib/python3.6/site-packages/netmiko/base_connection.py”     new_data = self.read_channel()   文件“ /home/ipautowppprod/.pyenv/versions/3.6.5/lib/python3.6/site-packages/netmiko/base_connection.py”,第395行,位于read_channel中     输出= self._read_channel()   _read_channel中的文件“ /home/ipautowppprod/.pyenv/versions/3.6.5/lib/python3.6/site-packages/netmiko/base_connection.py”,第373行     如果self.remote_conn.recv_ready(): AttributeError:“ NoneType”对象没有属性“ recv_ready”

这是我的代码:

    #!/home/ipautowppprod/.pyenv/shims/python

# cisco_auto_back_up_v4

from netmiko import ConnectHandler, redispatch
from netmiko import NetMikoAuthenticationException, NetMikoTimeoutException
import datetime
import sys
import time

now = datetime.datetime.now()
time_now = now.strftime("%Y-%m-%d_%H:%M:%S")

target_info = sys.argv[1].split(',')
ipmon_info = sys.argv[2].split(',')

target_info = [x.strip() for x in target_info]
ipmon_info = [x.strip() for x in ipmon_info]

target_device = {
    'device_type': 'cisco_ios',
    'ip': target_info[0],
    "host": target_info[1],
    'username': target_info[2],
    'password': target_info[3],
    'secret': target_info[4]
}

ipmon = {
    'device_type': 'linux',
    'ip': ipmon_info[0],
    'username': ipmon_info[1],
    'password': ipmon_info[2]
}

try:
    print("Attempting to Connect...")
    # Connect to ipmon
    net_connect = ConnectHandler(**ipmon)
    print(net_connect.find_prompt())

    net_connect.write_channel("ssh {}@{}\n".format(target_device["username"],
                                                   target_device["ip"]))
    time.sleep(1)
    output = net_connect.read_channel()

    print(output)

    if "RSA" in output:
        net_connect.write_channel("yes\n")
        time.sleep(1)
        output = net_connect.read_channel()
        print(output)
    if "user" in output:
        net_connect.write_channel(target_device["username"] + "\n")
        time.sleep(1)
        output = net_connect.read_channel()
    if "password" in output:
        net_connect.write_channel(target_device["password"] + "\n")
        time.sleep(5)
        output = net_connect.read_channel()
    if "password" in output:
        print("Wrong credentials.")
        sys.exit(1)
    elif "refused" in output:
        net_connect.disconnect()
        print("Connection Refused")
    else:
        net_connect.disconnect()

    # Connect to device
    redispatch(net_connect, device_type=target_device['device_type'])
    CMD = net_connect.send_command_timing('show running-config')

    # Converts CMD output to a string
    cmd_output = str(CMD.stdout)

except NetMikoAuthenticationException as autom_err:
    print(autom_err)
    sys.exit(1)

except NetMikoTimeoutException as timeout_err:
    print(timeout_err)
    sys.exit(1)

请告知。

预先感谢

1 个答案:

答案 0 :(得分:0)

您可能想使用调试器逐步执行代码,但是当您进入redispatch调用时,您的net_connect对象似乎不再连接(即net_connect.remote_conn已设置为None)。

这使我认为有可能调用了elif或else子句中的disconnect()。在这种情况下,您可能应该引发一个异常(或sys.exit()),因为如果发生任何一种情况,程序将无法继续执行。