# Hub pod getting status Crashloopbackoff

**URL:** <https://discourse.jupyter.org/t/hub-pod-getting-status-crashloopbackoff/8842>\
**Category:** Zero to JupyterHub on Kubernetes\
**Created:** [April 20, 2021, 9:18am UTC](https://discourse.jupyter.org/t/hub-pod-getting-status-crashloopbackoff/8842 "2021-04-20T09:18:18Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mandira](https://avatars.discourse-cdn.com/v4/letter/m/f14d63/32.png) [@mandira](https://discourse.jupyter.org/u/mandira)\
**Post date:** [April 20, 2021, 9:18am UTC](https://discourse.jupyter.org/t/hub-pod-getting-status-crashloopbackoff/8842/1 "2021-04-20T09:18:18Z")

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Can someone help me to find out the reason why hub pod is getting status Crashloopbackoff . When I checked the logs I got below message .

> kubectl logs hub  
> D 2021-04-20 09:13:03.979 JupyterHub application:556] Looking for /etc/jupyterhub/jupyterhub\_config in /srv/jupyterhub  
> No config at /etc/jupyterhub/config/values.yaml  
> Loading /etc/jupyterhub/secret/values.yaml  
> Loading extra config: JupyterhubConfig.py  
> [E 2021-04-20 09:13:04.324 JupyterHub app:2844]  
> Traceback (most recent call last):  
> File “/usr/local/lib/python3.6/dist-packages/jupyterhub/app.py”, line 2841, in launch\_instance\_async  
> await self.initialize(argv)  
> File “/usr/local/lib/python3.6/dist-packages/jupyterhub/app.py”, line 2330, in initialize  
> self.load\_config\_file(self.config\_file)  
> File “”, line 2, in load\_config\_file  
> File “/usr/local/lib/python3.6/dist-packages/traitlets/config/application.py”, line 87, in catch\_config\_error  
> return method(app, \*args, \*\*kwargs)  
> File “/usr/local/lib/python3.6/dist-packages/traitlets/config/application.py”, line 602, in load\_config\_file  
> raise\_config\_file\_errors=self.raise\_config\_file\_errors,  
> File “/usr/local/lib/python3.6/dist-packages/traitlets/config/application.py”, line 563, in \_load\_config\_files  
> config = loader.load\_config()  
> File “/usr/local/lib/python3.6/dist-packages/traitlets/config/loader.py”, line 457, in load\_config  
> self.\_read\_file\_as\_dict()  
> File “/usr/local/lib/python3.6/dist-packages/traitlets/config/loader.py”, line 489, in \_read\_file\_as\_dict  
> py3compat.execfile(conf\_filename, namespace)  
> File “/usr/local/lib/python3.6/dist-packages/ipython\_genutils/py3compat.py”, line 198, in execfile  
> exec(compiler(f.read(), fname, ‘exec’), glob, loc)  
> File “/etc/jupyterhub/jupyterhub\_config.py”, line 553, in   
> exec(config\_py)  
> File “”, line 19, in   
> TypeError: unsupported operand type(s) for +: ‘NoneType’ and ‘str’

[D 2021-04-20 09:13:04.325 JupyterHub application:653] Exiting application: jupyterhub

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<div class="post-metadata">

**Author:** ![manics](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.jupyter.org/manics/32/85_2.png) [@manics](https://discourse.jupyter.org/u/manics)\
**Post date:** [April 20, 2021, 3:35pm UTC](https://discourse.jupyter.org/t/hub-pod-getting-status-crashloopbackoff/8842/2 "2021-04-20T15:35:19Z")

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It sounds like there’s a problem in your configuration. Could you:

- show us your full Z2JH configuration with secrets redacted
- give us details on the Z2JH version you’ve installed
- give us as much information as possible on how your K8S cluster is setup