[X2Go-User] pyhoca-cli seems very broken on xubuntu 20.10

[Ulrich Sibiller]

It looks like a broken python installation. Can you try to reinstall python3?

Uli

On Mon, Jan 18, 2021 at 10:47 AM Chris Green <cl at isbd.net> wrote:
>
> Having fixed the missing python3-invoke module pyhoca-cli now crashes
> in all sorts of other ways on my xubuntu 20.10 system.
>
> These sessions run fine when called from x2goclient, I just want to script them
> in order to run a couple of things before the x2go session.
>
> This is calling an xfce session, i.e. a full desktop:-
>     chris$ pyhoca-cli esprimo
>     Traceback (most recent call last):
>       File "/usr/bin/pyhoca-cli", line 439, in <module>
>         parser, args = parseargs()
>       File "/usr/bin/pyhoca-cli", line 397, in parseargs
>         ssh_host = ssh_config.lookup(a.server)
>       File "/usr/lib/python3/dist-packages/paramiko/config.py", line 223, in lookup
>         options = self._lookup(hostname=hostname)
>       File "/usr/lib/python3/dist-packages/paramiko/config.py", line 250, in _lookup
>         or self._does_match(
>       File "/usr/lib/python3/dist-packages/paramiko/config.py", line 389, in _does_match
>         passed = invoke.run(exec_cmd, hide="stdout", warn=True).ok
>       File "/usr/lib/python3/dist-packages/invoke/__init__.py", line 48, in run
>         return Context().run(command, **kwargs)
>       File "/usr/lib/python3/dist-packages/invoke/context.py", line 94, in run
>         return self._run(runner, command, **kwargs)
>       File "/usr/lib/python3/dist-packages/invoke/context.py", line 101, in _run
>         return runner.run(command, **kwargs)
>       File "/usr/lib/python3/dist-packages/invoke/runners.py", line 363, in run
>         return self._run_body(command, **kwargs)
>       File "/usr/lib/python3/dist-packages/invoke/runners.py", line 411, in _run_body
>         self.start(command, self.opts["shell"], self.env)
>       File "/usr/lib/python3/dist-packages/invoke/runners.py", line 1271, in start
>         self.process = Popen(
>       File "/usr/lib/python3.8/subprocess.py", line 854, in __init__
>         self._execute_child(args, executable, preexec_fn, close_fds,
>       File "/usr/lib/python3.8/subprocess.py", line 1637, in _execute_child
>         self.pid = _posixsubprocess.fork_exec(
>     AttributeError: 'NoneType' object has no attribute 'fork_exec'
>
>
> This is runnning a single application:-
>     chris$ pyhoca-cli Digikam
>     pyhoca-cli[19161] NOTICE: preparing requested X2Go session
>     pyhoca-cli[19161] (PyHocaCLI) NOTICE: preparing requested X2Go session
>     pyhoca-cli[19161] (x2gosessregistry-pylib) NOTICE: registering X2Go session Pyhoca-Client_Session...
>     pyhoca-cli[19161] (x2goclient-pylib) NOTICE: initializing X2Go session...
>     pyhoca-cli[19161] (x2gocontrolsession-pylib) NOTICE: connecting to [Digikam]:22
>     Traceback (most recent call last):
>       File "/usr/bin/pyhoca-cli", line 454, in <module>
>         thisPyHocaCLI.authenticate()
>       File "/usr/lib/python3/dist-packages/pyhoca/cli/frontend.py", line 532, in authenticate
>         self._X2GoClient__connect_session(self.x2go_session_hash, username=_username, password=password, passphrase=passphrase, force_password_auth=force_password_auth)
>       File "/usr/lib/python3/dist-packages/x2go/client.py", line 1392, in connect_session
>         _success = self.session_registry(session_uuid).connect(username=username,
>       File "/usr/lib/python3/dist-packages/x2go/session.py", line 1387, in connect
>         self.connected = self.control_session.connect(self.server,
>       File "/usr/lib/python3/dist-packages/x2go/backends/control/plain.py", line 1031, in connect
>         paramiko.SSHClient.connect(self, _hostname, port=port, username=username, pkey=None, password=passphrase,
>       File "/usr/lib/python3/dist-packages/paramiko/client.py", line 340, in connect
>         to_try = list(self._families_and_addresses(hostname, port))
>       File "/usr/lib/python3/dist-packages/paramiko/client.py", line 203, in _families_and_addresses
>         addrinfos = socket.getaddrinfo(
>       File "/usr/lib/python3/dist-packages/gevent/_socketcommon.py", line 212, in getaddrinfo
>         addrlist = get_hub().resolver.getaddrinfo(host, port, family, type, proto, flags)
>       File "/usr/lib/python3/dist-packages/gevent/resolver/thread.py", line 65, in getaddrinfo
>         return self.pool.apply(_socket.getaddrinfo, args, kwargs)
>       File "/usr/lib/python3/dist-packages/gevent/pool.py", line 159, in apply
>         return self.spawn(func, *args, **kwds).get()
>       File "src/gevent/event.py", line 268, in gevent._event.AsyncResult.get
>       File "src/gevent/event.py", line 296, in gevent._event.AsyncResult.get
>       File "src/gevent/event.py", line 286, in gevent._event.AsyncResult.get
>       File "src/gevent/event.py", line 266, in gevent._event.AsyncResult._raise_exception
>       File "src/gevent/event.py", line 211, in gevent._event.AsyncResult.exc_info.__get__
>       File "/usr/lib/python3/dist-packages/gevent/_tblib.py", line 371, in g
>         return f(a)
>       File "/usr/lib/python3/dist-packages/gevent/_tblib.py", line 432, in load_traceback
>         return loads(s)
>       File "/usr/lib/python3/dist-packages/gevent/_tblib.py", line 337, in unpickle_traceback
>         return ret.as_traceback()
>       File "/usr/lib/python3/dist-packages/gevent/_tblib.py", line 202, in as_traceback
>         code = CodeType(
>     TypeError: an integer is required (got type bytes)
>
>
> --
> Chris Green
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