Question

我正在尝试查看设备列表，其中一些设备似乎已安装SSH v1.5，即使从异常语句捕获它，我仍从paramiko收到一些异常消息。我想知道如何抑制此消息，因为它会干扰到潜在用户的输出。

我正在使用：

paramiko == 2.6.0 Python 3.6.3

我查看了一些日志记录选项，但是这些选项似乎无效。我正在使用线程和队列模块同时ssh到8个设备中以获取配置。

    # Try connect via SSH:
    tries = 1
    ssh_error = None
    retries = 3
    while tries <= retries:

        print("START")
        try:
            rc.connect(
                device, port, creds['username'], creds['password'],
                look_for_keys=False, allow_agent=False, timeout=5)
        except paramiko.BadHostKeyException as err:
            ssh_error = "Bad host key error: %s" % err
        except paramiko.AuthenticationException as err:
            ssh_error = "Authentication error: %s" % err
        except paramiko.ssh_exception.NoValidConnectionsError as err:
            ssh_error = "Unable to connect via SSH: %s" % err
        except paramiko.SSHException as err:
            ssh_error = "Exception: %s" % err
            print("EXCEPTION CAUGHT")
        except socket.error as err:
            ssh_error = "Socket error: %s" % err
        except OSError as err:
            ssh_error = "OS error: %s" % err[p ]
        except Exception as err:
            ssh_error = "General exception error: %s" % err

        if ssh_error is not None:
            tries += 1
            if tries == retries + 1:
                break

        print("END")

输出如下：

(venv) [user@somehost venv]$ ./connect.py 
START
START
START
START
START
Exception: Incompatible version (1.5 instead of 2.0)
Traceback (most recent call last):
  File "/opt/connect/venv/lib/python3.6/site-packages/paramiko/transport.py", line 2039, in run
    self._check_banner()
  File "/opt/connect/venv/lib/python3.6/site-packages/paramiko/transport.py", line 2240, in _check_banner
    raise SSHException(msg.format(version))
paramiko.ssh_exception.SSHException: Incompatible version (1.5 instead of 2.0)

EXCEPTION CAUGHT
END
START
START
Exception: Incompatible version (1.5 instead of 2.0)
Traceback (most recent call last):
  File "/opt/connect/venv/lib/python3.6/site-packages/paramiko/transport.py", line 2039, in run
    self._check_banner()
  File "/opt/connect/venv/lib/python3.6/site-packages/paramiko/transport.py", line 2240, in _check_banner
    raise SSHException(msg.format(version))
paramiko.ssh_exception.SSHException: Incompatible version (1.5 instead of 2.0)

EXCEPTION CAUGHT
END

有8个线程在运行，因此为什么您会看到一些STARTS，但其目的是表明我实际上正在捕获异常。看起来paramiko的动作有些奇怪。在我6年以上的编码中，我实际上还没有看到过类似的东西，因此不确定是否是paramiko等的较新版本。

现在，我知道这与不支持的SSH版本有关，但是我的问题是，如何使paramiko在捕获异常并希望通过异常语句来处理它们时不显示这些警告。如果可能的话，我也不想去“破解” paramiko模块。

如何使用paramiko抑制SSHException错误

0 个答案: