无论我用 DSA 还是 RSA 都会得到认证失败的异常

dsa 的时候我也有生生成 id_dsa

In [1]: import paramiko

In [2]: ssh = paramiko.SSHClient()

In [3]: ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())

In [4]: key_file = paramiko.DSSKey.from_private_key_file('/root/.ssh/id_dsa')

In [5]: ssh.connect('192.168.1.117',22,'root',pkey=key_file)

---------------------------------------------------------------------------

AuthenticationException                   Traceback (most recent call last)

<ipython-input-5-b181b849fa0a> in <module>()

----> 1 ssh.connect('192.168.1.117',22,'root',pkey=key_file)

~/virtualenv/skops/lib/python3.6/site-packages/paramiko/client.py in connect(self, hostname, port, username, password, pkey, key_filename, timeout, allow_agent, look_for_keys, compress, sock, gss_auth, gss_kex, gss_deleg_creds, gss_host, banner_timeout, auth_timeout, gss_trust_dns, passphrase)

    422             username, password, pkey, key_filenames, allow_agent,

    423             look_for_keys, gss_auth, gss_kex, gss_deleg_creds, t.gss_host,

--> 424             passphrase,

    425         )

    426

~/virtualenv/skops/lib/python3.6/site-packages/paramiko/client.py in _auth(self, username, password, pkey, key_filenames, allow_agent, look_for_keys, gss_auth, gss_kex, gss_deleg_creds, gss_host, passphrase)

    712         # if we got an auth-failed exception earlier, re-raise it

    713         if saved_exception is not None:

--> 714             raise saved_exception

    715         raise SSHException('No authentication methods available')

    716

~/virtualenv/skops/lib/python3.6/site-packages/paramiko/client.py in _auth(self, username, password, pkey, key_filenames, allow_agent, look_for_keys, gss_auth, gss_kex, gss_deleg_creds, gss_host, passphrase)

    689                     # in ['password']

    690                     allowed_types = set(

--> 691                         self._transport.auth_publickey(username, key))

    692                     two_factor = (allowed_types & two_factor_types)

    693                     if not two_factor:

~/virtualenv/skops/lib/python3.6/site-packages/paramiko/transport.py in auth_publickey(self, username, key, event)

   1448             # caller wants to wait for event themselves

   1449             return []

-> 1450         return self.auth_handler.wait_for_response(my_event)

   1451

   1452     def auth_interactive(self, username, handler, submethods=''):

~/virtualenv/skops/lib/python3.6/site-packages/paramiko/auth_handler.py in wait_for_response(self, event)

    224             if issubclass(e.__class__, PartialAuthentication):

    225                 return e.allowed_types

--> 226             raise e

    227         return []

    228

AuthenticationException: Authentication failed.