[IPython-dev] Error running JupyterHub

Tue Oct 28 03:08:51 EDT 2014

Hi Doug,

1. I'm not installing ipython from source, just with pip, so a bit confused
by the instructions re ipython-master. Maybe I'm misunderstanding. I've run
`pip install ipython --upgrade`; do I really need to do ipython from source?

2. I've just tried the jupyterhub README instructions from scratch on a new
machine (a new cloud instance) from the current jupyterhub master, commit
db5cf9cf99f68f133b... - same issues unfortunately.

3. I'm not sure how to check for this but it's probably addressed by having
launched a new machine!

4. I'm running as root, no sudo involved. Just
$ su root
$ jupyterhub

And I get all the same errors as previously.

I'm mystified as I can see others posting here saying that they are using
it, so it must be a problem in my setup, but I really can't see what. Could
it possibly be a node.js issue?

Thanks again for the help!

Clare

On 24 October 2014 23:58, Doug Blank <doug.blank at gmail.com> wrote:

> On Fri, Oct 24, 2014 at 8:49 AM, Clare Sloggett <claresloggett at gmail.com>
> wrote:
>
>> Hi all,
>>
>> I'm getting an error running JupyterHub. Right now all I'm doing is
>> attempting to run it as root with no command-line options.
>>
>> A couple of weeks ago I was trying to set it up and while I was running
>> into issues, I wasn't getting this particular problem - I was able to at
>> least run the command. I'm not sure if something has changed in Jupyter.
>> Entirely possible that I made a mistake in my setup this time!
>>
>> Any advice would be appreciated in interpreting the below errors.
>>
>> Thanks,
>> Clare
>>
>> Below is the output of `jupyterhub --debug`:
>>
>> Traceback (most recent call last):
>>   File "/usr/lib/python2.7/logging/__init__.py", line 846, in emit
>>     msg = self.format(record)
>>   File "/usr/lib/python2.7/logging/__init__.py", line 723, in format
>>     return fmt.format(record)
>>   File
>> "/usr/local/lib/python2.7/dist-packages/IPython/config/application.py",
>> line 121, in format
>>     return super(LevelFormatter, self).format(record)
>>   File "/usr/lib/python2.7/logging/__init__.py", line 467, in format
>>     s = self._fmt % record.__dict__
>> KeyError: u'color'
>> Logged from file application.py, line 247
>> Traceback (most recent call last):
>>   File "/usr/lib/python2.7/logging/__init__.py", line 846, in emit
>>     msg = self.format(record)
>>   File "/usr/lib/python2.7/logging/__init__.py", line 723, in format
>>     return fmt.format(record)
>>   File
>> "/usr/local/lib/python2.7/dist-packages/IPython/config/application.py",
>> line 121, in format
>>     return super(LevelFormatter, self).format(record)
>>   File "/usr/lib/python2.7/logging/__init__.py", line 467, in format
>>     s = self._fmt % record.__dict__
>> KeyError: u'color'
>> Logged from file application.py, line 248
>> [D 23:39:03.030 JupyterHubApp] Connecting to db:
>> sqlite:///jupyterhub.sqlite
>> [I 23:39:03.062 JupyterHubApp] Not using whitelist. Any authenticated
>> user will be allowed.
>> [D 23:39:03.064 JupyterHubApp] Loaded users:
>>       ubuntu admin
>> [I 23:39:03.072 JupyterHubApp] Starting proxy:
>> [u'configurable-http-proxy', '--ip', u'', '--port', '8000', '--api-ip',
>> u'localhost', '--api-port', '8001', '--default-target', '
>> http://localhost:8081']
>> 23:39:03.178 - info: [ConfigProxy] Proxying http://*:8000 to
>> http://localhost:8081
>> 23:39:03.180 - info: [ConfigProxy] Proxy API at
>> http://localhost:8001/api/routes
>>
>> events.js:72
>>         throw er; // Unhandled 'error' event
>>
>
> I think that I have had that issue when configurable-http-proxy isn't
> running, or maybe it is already running and you are trying to start it
> again.
>
> Some things that I do when updating jupyterhub:
>
> 1. Updating ipython: make sure you run "python setup.py submodule" in
> ipython-master to get any new dependencies. Then "git pull" and "sudo pip
> install . -U"
>
> 2. Updating jupyterhub: do the steps in the jupyterhub/README.md again...
> some dependencies may have changed. Then "sudo pip install . -U"
>
> 3. Make sure all jupyterhub-singleuser processes and
> configurable-http-proxy processes are killed. This is still hard to do
> sometimes.
>
> 4. Are you running with a sudo environment? There is an additional line in
> the sudoers file that is now needed to kill processes.
>
> I think that is most of what I need to do.
>
> -Doug
>
>
>>               ^
>> Error: listen EADDRINUSE
>>     at errnoException (net.js:904:11)
>>     at Server._listen2 (net.js:1042:14)
>>     at listen (net.js:1064:10)
>>     at net.js:1146:9
>>     at dns.js:72:18
>>     at process._tickCallback (node.js:419:13)
>>     at Function.Module.runMain (module.js:499:11)
>>     at startup (node.js:119:16)
>>     at node.js:906:3
>> [C 23:39:04.087 JupyterHubApp] Failed to start proxy
>>     Traceback (most recent call last):
>>       File "/usr/local/lib/python2.7/dist-packages/jupyterhub/app.py",
>> line 727, in start
>>         IOLoop().run_sync(self.start_proxy)
>>       File "/usr/local/lib/python2.7/dist-packages/tornado/ioloop.py",
>> line 389, in run_sync
>>         return future_cell[0].result()
>>       File
>> "/usr/local/lib/python2.7/dist-packages/tornado/concurrent.py", line 129,
>> in result
>>         raise_exc_info(self.__exc_info)
>>       File
>> "/usr/local/lib/python2.7/dist-packages/tornado/stack_context.py", line
>> 302, in wrapped
>>         ret = fn(*args, **kwargs)
>>       File "/usr/local/lib/python2.7/dist-packages/tornado/gen.py", line
>> 574, in inner
>>         self.set_result(key, result)
>>       File "/usr/local/lib/python2.7/dist-packages/tornado/gen.py", line
>> 500, in set_result
>>         self.run()
>>       File "/usr/local/lib/python2.7/dist-packages/tornado/gen.py", line
>> 529, in run
>>         yielded = self.gen.throw(*exc_info)
>>       File "/usr/local/lib/python2.7/dist-packages/jupyterhub/app.py",
>> line 556, in start_proxy
>>         _check()
>>       File "/usr/local/lib/python2.7/dist-packages/jupyterhub/app.py",
>> line 552, in _check
>>         raise e
>>     RuntimeError: Proxy failed to start with exit code 8
>>
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>>
>
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