Paramiko 未从频道接收所有数据

Question

我已经编写了一个脚本来配置几个 ASA 设备。它完美地完成了工作，但我无法从我正在配置的设备获得全部输出，在某些时候数据被卡住并且没有更多输出。我想要它来检查问题或配置错误等。我正在从 ASA 防火墙上的文件配置大约 500 个 IP、对象、组等……我不知道该怎么做，我还没有没有找到任何清理或擦除 Paramiko 缓冲区的命令:(

有什么想法吗？这是我的代码：

import paramiko
import re
import time
from tqdm.auto import tqdm
from io import StringIO

device_ip = 'X.X.X.X'
ssh = paramiko.SSHClient()                               # Connection
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(hostname = device_ip, username = username, password = password) 
connection = ssh.invoke_shell()
output_data = StringIO()
connection.send("conf t\n")                              # Enter configuration mode
time.sleep(1)                                         
file = open(file_name, 'r')                        # IP list file
lines = file.readlines()
objects = []
ip_subnet = re.compile(r'([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+)\/([0-9]+)')
group_name = "GRP-OBJ-EU-Blablabla"
for line in tqdm(lines):
    match = ip_subnet.findall(line.strip())
    ip = match[0][0]
    subnet = match[0][1]                               # Not used, for future use may be...
    object_name = "obj-"+ip
    object_configuration = "object network "+object_name
    object_network = "host "+ip
    object_description = "description whatever"
    objects.append(object_name)
    connection.send(object_configuration+"\n")
    time.sleep(1)
    connection.send(object_network+"\n")
    time.sleep(1)
    connection.send(object_description+"\n")
    time.sleep(1)
    received_data = connection.recv(5000).decode(encoding='utf-8')
    if received_data:
        output_data.write(received_data)
group_command = "object-group network "+group_name
connection.send(group_command+"\n")
time.sleep(1)
for object_host in tqdm(objects):
    connection.send("network-object object "+object_host+"\n")
    time.sleep(1)
    received_data = connection.recv(5000).decode(encoding='utf-8')
    if received_data:
        output_data.write(received_data)
connection.send("end \n")
time.sleep(1)
connection.send("wr \n")
time.sleep(5)
connection.close()
ssh.close()
file.close()
print(output_data)

我试过像下面这样的一行，但它也不起作用：

device_output = connection.recv(1000000000000).decode(encoding='utf-8')

Answer 1

我无法直接测试你的代码，但我过去遇到过类似的问题并找到了一个实用的解决方案。要一次获取所有数据，您可以打开记事本并在其中打印 received_data 数据。您还可以在 encoding='utf-8' 方法之外使用 ascii。

示例代码：

received_data = remote_connection.recv(99999999)
result = received_data.decode('ascii').strip("\n")

LOGfile = "log.txt" 
log = open(LOGfile, 'a')
log.write(result )
log.close()

我推荐 Netmiko-TTP 库来解析除 Paramiko 库之外的所有你想要的数据。我在下面给出了示例代码 link。希望有用。

https://github.com/MertKulac/Nokia--TTP--Template--Command--Set/blob/main/show%20system%20informtaion.py

Answer 2

好吧，我找到了解决方案……这很愚蠢。我没有退出启用模式……似乎就是这样！大声笑我没有得到关系，但无论如何下面的行工作......感谢大家的帮助！

....
connection.send("end \n")
time.sleep(1)
connection.send("wr \n")
time.sleep(5)
device_output = connection.recv(10000000).decode(encoding='utf-8') 
connection.close()
ssh.close()
file.close()
print(device_output)

Paramiko 未从频道接收所有数据

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