python - 使用 Juniper 执行的 Paramiko 回显命令

Question

使用 Paramiko 从 Juniper 获取 o/p 时，输出首先显示命令，然后执行命令。下面是代码和输出

import paramiko
import getpass
password = getpass.getpass()
with open('ips.txt','r') as f:      
    ip = f.read().splitlines()
for device in ip:
    ssh_client = paramiko.SSHClient()
    ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    ssh_client.connect(device, port=22, username='test', password=password, look_for_keys=False, allow_agent=False)
    remote_connection = ssh_client.invoke_shell()
    remote_connection.send('set cli screen-length 500\n')
    remote_connection.send('ping 4.2.2.2 rapid\n')
    import time
    time.sleep(3)
    output = remote_connection.recv(4096)
    print(output.decode())
    with open('Backup.txt', 'a+') as f:
        f.write(output)
        f.write("\n********************\n")
    ssh_client.close()

输出如下:

Password: 
--- JUNOS  XXX built XXX
set cli screen-length 500 <---- Is it something relevant with Juniper when running python with paramiko. 
ping 4.2.2.2 rapid <-----
{master:0}
XXX> set cli screen-length 500 
Screen length set to 500

{master:0}
XXX> ping 4.2.2.2 rapid
PING 4.2.2.2 (4.2.2.2): 56 data bytes
!!!!!
--- 4.2.2.2 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max/stddev = 43.876/52.403/55.517/4.345 ms

Answer 1

您正在通过模拟在交互式 shell 终端界面上键入命令来执行命令。因此，终端与您“键入”的内容相呼应也就不足为奇了。

要自动执行命令，请不要使用 shell 终端。使用 SSH“执行” channel 。在 Paramiko 中是 SSHClient.exec_command .

见 Python Paramiko - Run command