执行命令后发生paramiko-expect超时

Question

有人可以帮我解决执行命令后发生超时的原因。我正在尝试SSH到机器并执行命令。我想存储执行命令的结果。我提到了paramiko-timeout，但我没有得到预期的结果。

import traceback

try:
    import paramiko
except ImportError:
    raise Exception("Please install paramiko , pip install paramiko")
import pexpect
from paramiko_expect import SSHClientInteraction


def main():
    HOSTNAME = "minion5.net"
    USERNAME = "root"
    PASSWORD = "help@432"
    PROMPT = "root@*:~\$\s+"
    try:
        client = paramiko.SSHClient()
        client.load_system_host_keys()
        client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
        client.connect(hostname=HOSTNAME, username=USERNAME, password=PASSWORD)

        with SSHClientInteraction(client, timeout=20, display=True) as interact:
             interact.expect(PROMPT)
             interact.send('hostname -f')
             interact.expect(PROMPT)
             interact.send('exit')
             cmd_output = interact.current_output_clean
             print cmd_output
    except Exception:
        traceback.print_exc()
    finally:
        try:
            client.close()
        except:
            pass


if __name__ == '__main__':
    main()

以下是输出

[root@btpvm0740 paramiko-tests]# python sa-test.py
Last login: Thu Jun 14 11:13:10 2018 from btpvm0740.net
[root@minion5 ~]# Traceback (most recent call last):
  File "sa-test.py", line 25, in main
    interact.expect(PROMPT)
  File "/usr/lib/python2.7/site-packages/paramiko_expect.py", line 144, in expect
    current_buffer = self.channel.recv(self.buffer_size)
  File "/usr/lib/python2.7/site-packages/paramiko/channel.py", line 685, in recv
    raise socket.timeout()
timeout