# Tensorboard error "not found"

**URL:** <https://discourse.openondemand.org/t/tensorboard-error-not-found/1260>\
**Category:** Get Help\
**Created:** [December 23, 2020, 5:10pm UTC](https://discourse.openondemand.org/t/tensorboard-error-not-found/1260 "2020-12-23T17:10:00Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![superdavidxp](https://sea1.discourse-cdn.com/flex015/user_avatar/discourse.openondemand.org/superdavidxp/32/194_2.png) [@superdavidxp](https://discourse.openondemand.org/u/superdavidxp)\
**Post date:** [December 23, 2020, 5:10pm UTC](https://discourse.openondemand.org/t/tensorboard-error-not-found/1260/1 "2020-12-23T17:10:00Z")

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Hi,

We had a problem that after update OOD to 1.18, Jupyter nodebook still work, but the same old tensorboard shown “not found” after click the “connect” button.

W1222 13:55:52.963156 140734028444080 application.py:351] path /node/hal07/26935 not found, sending 404

Could someone give me some advice please?

Merry Christmas and Happy new year!

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**Author:** ![jeff.ohrstrom](https://sea1.discourse-cdn.com/flex015/user_avatar/discourse.openondemand.org/jeff.ohrstrom/32/136_2.png) [@jeff.ohrstrom](https://discourse.openondemand.org/u/jeff.ohrstrom)\
**Post date:** [December 23, 2020, 5:30pm UTC](https://discourse.openondemand.org/t/tensorboard-error-not-found/1260/2 "2020-12-23T17:30:12Z")

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Is `hal07` a valid host? Does jupyter use the FQDN or the shortname like that? I would wonder if the shortname `hal07` is passing your `host_regex` configuration in `ood_portal.yml`.

If that’s not it, can you open your browsers dev tools and show if there’s anything wrong in either network or the console (I think chrome is the only browser that will keep dev tools open when you open a new tab).

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**Author:** ![superdavidxp](https://sea1.discourse-cdn.com/flex015/user_avatar/discourse.openondemand.org/superdavidxp/32/194_2.png) [@superdavidxp](https://discourse.openondemand.org/u/superdavidxp)\
**Post date:** [December 23, 2020, 6:07pm UTC](https://discourse.openondemand.org/t/tensorboard-error-not-found/1260/3 "2020-12-23T18:07:08Z")

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Hi Jeff,

Yes, the `hal07` is a valid host. For example, the jupyter notebook can run as `https://hal-ondemand.ncsa.illinois.edu/node/hal10/4093/tree?`.

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**Author:** ![superdavidxp](https://sea1.discourse-cdn.com/flex015/user_avatar/discourse.openondemand.org/superdavidxp/32/194_2.png) [@superdavidxp](https://discourse.openondemand.org/u/superdavidxp)\
**Post date:** [January 4, 2021, 4:14pm UTC](https://discourse.openondemand.org/t/tensorboard-error-not-found/1260/4 "2021-01-04T16:14:16Z")

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Hi Jeff,

I am not familiar with the browsers dev tools, would you please give me some advice on that?

Happy New Year,

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**Author:** ![jeff.ohrstrom](https://sea1.discourse-cdn.com/flex015/user_avatar/discourse.openondemand.org/jeff.ohrstrom/32/136_2.png) [@jeff.ohrstrom](https://discourse.openondemand.org/u/jeff.ohrstrom)\
**Post date:** [January 5, 2021, 9:11pm UTC](https://discourse.openondemand.org/t/tensorboard-error-not-found/1260/5 "2021-01-05T21:11:09Z")

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Scratch that. I see that you’re error is coming from tensorboard itself and not, say apache.

OK. You’ve set this up as a batch connect app. I think in your `view.html.erb` you want to use /rnode instead of /node.

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**Author:** ![superdavidxp](https://sea1.discourse-cdn.com/flex015/user_avatar/discourse.openondemand.org/superdavidxp/32/194_2.png) [@superdavidxp](https://discourse.openondemand.org/u/superdavidxp)\
**Post date:** [January 7, 2021, 9:49pm UTC](https://discourse.openondemand.org/t/tensorboard-error-not-found/1260/6 "2021-01-07T21:49:22Z")

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Hi Jeff,

Thank you for your help. However, after I change the “node” to “rnode”, the error on the link "[https://hal-ondemand.ncsa.illinois.edu/rnode/hal10/22230/?"](https://hal-ondemand.ncsa.illinois.edu/rnode/hal10/22230/?%22) still “The requested URL was not found on this server.”

Any idea?

Thank you in advance,

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<div class="post-metadata">

**Author:** ![jeff.ohrstrom](https://sea1.discourse-cdn.com/flex015/user_avatar/discourse.openondemand.org/jeff.ohrstrom/32/136_2.png) [@jeff.ohrstrom](https://discourse.openondemand.org/u/jeff.ohrstrom)\
**Post date:** [January 13, 2021, 6:56pm UTC](https://discourse.openondemand.org/t/tensorboard-error-not-found/1260/7 "2021-01-13T18:56:18Z")

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We solved this interactively. It was an issue with the configuration in `ood_portal.yml` where `rnode_uri` was set to `'rnode'` instead of `'/rnode'`

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**Author:** ![westburg.2](https://avatars.discourse-cdn.com/v4/letter/w/0ea827/32.png) [@westburg.2](https://discourse.openondemand.org/u/westburg.2)\
**Post date:** [May 26, 2022, 3:43pm UTC](https://discourse.openondemand.org/t/tensorboard-error-not-found/1260/8 "2022-05-26T15:43:01Z")

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Closed on May 26, 2022, 3:43pm UTC