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https://issues.apache.org/jira/browse/SPARK-33413?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17230446#comment-17230446
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Apache Spark commented on SPARK-33413:
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User 'PierreLeresteux' has created a pull request for this issue:
https://github.com/apache/spark/pull/30348
> SparkUI / Executor Page doesn't work where under external reverse proxy
> -----------------------------------------------------------------------
>
> Key: SPARK-33413
> URL: https://issues.apache.org/jira/browse/SPARK-33413
> Project: Spark
> Issue Type: Bug
> Components: Web UI
> Affects Versions: 2.4.7, 3.0.1
> Reporter: Pierre Leresteux
> Priority: Minor
>
> When using SparkUI under an external reverse proxy (NGinx, Træfik, ... ), you
> can configure SparkUI to be correctly displayed (html page and all static
> resources). But in the executors page, when calling the /api/, the URL don't
> use the Spark proxyBase configuration.
>
> Here is an example :
> I use Træfik to access to the SparkUI using the path : /sparkui (a proxy
> redirect is made when I call [http://acme.com/sparkui] to the SparkUI) and I
> use this Spark config :
> {code:java}
> spark.ui.proxyBase /sparkui
> spark.ui.proxyRedirectUri /{code}
> using this config, when calling [http://acme.com/sparkui] I'll be redirected
> to [http://acme.com/sparkui/jobs/] and all is currently serve (HTML and all
> static files)
>
> But I go on [http://acme.com/sparkui/executors/] a XHR call is made using
> this URL [http://acme.com/api/v1/applications] so it doesn't use the reverse
> proxy rule ... the correct URL should be :
> [http://acme.com/sparkui/api/v1/applications]
>
> I discover on the code (here for example
> [https://github.com/apache/spark/blob/branch-3.0/core/src/main/resources/org/apache/spark/ui/static/utils.js#L193)]
> that SparkUI use the location.origin (in my case
> [http://acme.com|http://acme.com%29./]). I think it should use the complete
> URL (under the last part like /executors/) instead or receive the proxyBase
> configuration to add it after the location.origin ...
>
>
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