[JupyterQtConsoleApp] CRITICAL | Could not find existing kernel connection file about qtconsole

[shaunpatel]

Update: I am able to get this to work if I specify the absolute path of the kernel file to the --existing flag.

[minrk]

Can you run it with --debug and provide the output? It's possible that it's not looking in the CWD.

[shaunpatel]

Hm, I can't seem to get command to run with the --debug flag. Using this command:

jupyter qtconsole --existing kernel-8103.json --ssh user@host --debug

Results in:

[JupyterQtConsoleApp] CRITICAL | Bad config encountered during initialization:
[JupyterQtConsoleApp] CRITICAL | Unrecognized flag: '--debug'

Thoughts?

[Migelo]

I got the exact same problem and specifying the absolute path also solved this problem, thanks @shaunpatel!

jupyter 4.1.1
ipython 5.1.0
python 2.7.12
SUSE Linux Enterprise Server 11 (x86_64)

[kondor6c]

Can we close this issue since it is documented that you need the full path, or should we keep it open to search the local path?

[Migelo]

IMO it'd be cool if it worked just with the local path, more convenient.

[edoson]

Hi,

Trying to do something similar, can't get it to work. My steps:

1. running "%connect_info" on the notebook in a remote machine (the remote machine is notebook server).
2. copying the json connection file into my local machine
3. Run jupyter qtconsole --existing kernel.json --ssh user@host

The qtconsole comes up, but shows "kernal died, restarting" repeatedly.

[mrdivine]

Hi,

I had the issue as shaunpatel until added the absolute path. Now, I'm in the same boat as edoson:

[JupyterQtConsoleApp] WARNING | kernel died: 3.00207400322
[JupyterQtConsoleApp] WARNING | kernel died: 3.00264906883
[JupyterQtConsoleApp] WARNING | kernel died: 3.00072693825
[JupyterQtConsoleApp] WARNING | kernel died: 3.00230789185
[JupyterQtConsoleApp] WARNING | kernel died: 3.00383901596

thanks

[freshforlife]

@Migelo and @shaunpatel , how did you guys make it work ? I'm getting the same error "kernel died"

jupyter qtconsole --existing C://Users//username//kernel-32488.json user@host

[JupyterQtConsoleApp] WARNING | kernel died: 3.00600004196
[JupyterQtConsoleApp] WARNING | kernel died: 2.98300004005
[JupyterQtConsoleApp] WARNING | kernel died: 3.00899982452
[JupyterQtConsoleApp] WARNING | kernel died: 3.00999999046
[JupyterQtConsoleApp] WARNING | kernel died: 2.99699997902

[Migelo]

I fixed it with absolute path. I was running Linux, you are on Windows, so the only thing I can think of is make sure your path is correct. Doesn't Windows use backslash '\' for the paths? You used '/'.

…

On 28 Apr 2017, 18:46 +0200, freshforlife ***@***.***>, wrote: @Migelo (https://github.com/Migelo) and @shaunpatel (https://github.com/shaunpatel) , how did you guys make it work ? I'm getting the same error "kernel died" jupyter qtconsole --existing C://Users//username//kernel-32488.json ***@***.*** [JupyterQtConsoleApp] WARNING | kernel died: 3.00600004196 [JupyterQtConsoleApp] WARNING | kernel died: 2.98300004005 [JupyterQtConsoleApp] WARNING | kernel died: 3.00899982452 [JupyterQtConsoleApp] WARNING | kernel died: 3.00999999046 [JupyterQtConsoleApp] WARNING | kernel died: 2.99699997902 — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub (#54 (comment)), or mute the thread (https://github.com/notifications/unsubscribe-auth/AGPBKIb3ACTUj00vrr3quYAullZDJNd3ks5r0hfsgaJpZM4GHjVQ).

[freshforlife]

@Migelo Thanks for replying. ( I was giving that command with the forward slash '/' because i was trying something in git bash installed on the windows machine)

When I give this command ( which is more windows like)
jupyter qtconsole --existing c:\Users\username\kernel-32488.json --ssh user@hostname , it gives me this weird error.

[JupyterQtConsoleApp] Forwarding connections to 127.0.0.1 via user@hostname
[JupyterQtConsoleApp] ERROR | Could not setup tunnels
Traceback (most recent call last):
  File "C:\Users\msrta\AppData\Local\Continuum\Anaconda2\envs\conda3\lib\site-packages\jupyter_client\consol
eapp.py", line 229, in init_ssh
    newports = tunnel_to_kernel(info, self.sshserver, self.sshkey)
  File "C:\Users\msrta\AppData\Local\Continuum\Anaconda2\envs\conda3\lib\site-packages\jupyter_client\connec
t.py", line 258, in tunnel_to_kernel
    if tunnel.try_passwordless_ssh(sshserver, sshkey):
  File "C:\Users\msrta\AppData\Local\Continuum\Anaconda2\envs\conda3\lib\site-packages\zmq\ssh\tunnel.py", l
ine 82, in try_passwordless_ssh
    return f(server, keyfile)
  File "C:\Users\msrta\AppData\Local\Continuum\Anaconda2\envs\conda3\lib\site-packages\zmq\ssh\tunnel.py", l
ine 126, in _try_passwordless_paramiko
    look_for_keys=True)
  File "C:\Users\msrta\AppData\Local\Continuum\Anaconda2\envs\conda3\lib\site-packages\paramiko\client.py",
line 381, in connect
    look_for_keys, gss_auth, gss_kex, gss_deleg_creds, gss_host)
  File "C:\Users\msrta\AppData\Local\Continuum\Anaconda2\envs\conda3\lib\site-packages\paramiko\client.py",
line 543, in _auth
    key = pkey_class.from_private_key_file(key_filename, password)
  File "C:\Users\msrta\AppData\Local\Continuum\Anaconda2\envs\conda3\lib\site-packages\paramiko\pkey.py", li
ne 196, in from_private_key_file
    key = cls(filename=filename, password=password)
  File "C:\Users\msrta\AppData\Local\Continuum\Anaconda2\envs\conda3\lib\site-packages\paramiko\rsakey.py",
line 46, in __init__
    self._from_private_key_file(filename, password)
  File "C:\Users\msrta\AppData\Local\Continuum\Anaconda2\envs\conda3\lib\site-packages\paramiko\rsakey.py",
line 173, in _from_private_key_file
    data = self._read_private_key_file('RSA', filename, password)
  File "C:\Users\msrta\AppData\Local\Continuum\Anaconda2\envs\conda3\lib\site-packages\paramiko\pkey.py", li
ne 267, in _read_private_key_file
    with open(filename, 'r') as f:
FileNotFoundError: [Errno 2] No such file or directory: ''

[Migelo]

Sorry it took me so long. I don't have any idea.