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https://issues.apache.org/jira/browse/SPARK-38862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17520801#comment-17520801
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Jack commented on SPARK-38862:
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**Edit** - Having reviewed the current status of implementation, could we piggy
back in using the existing auth key, and add a new config option to explicitly
enable this for use in the rest server; with any corresponding changes made to
the submit client as needed? This would lack the flexibility of a custom
authenticator but would likely meet the requirements of most.
> Basic Authentication or Token Based Authentication for The REST Submission
> Server
> ---------------------------------------------------------------------------------
>
> Key: SPARK-38862
> URL: https://issues.apache.org/jira/browse/SPARK-38862
> Project: Spark
> Issue Type: New Feature
> Components: Spark Core, Spark Submit
> Affects Versions: 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.1.0, 3.1.1, 3.1.2, 3.2.0,
> 3.2.1
> Reporter: Jack
> Priority: Major
> Labels: authentication, rest, spark, spark-submit, submit
>
> [Spark documentation|https://spark.apache.org/docs/latest/security.html]
> states that
> ??The REST Submission Server and the MesosClusterDispatcher do not support
> authentication. You should ensure that all network access to the REST API &
> MesosClusterDispatcher (port 6066 and 7077 respectively by default) are
> restricted to hosts that are trusted to submit jobs.??
> Whilst it is true that we can use network policies to restrict access to our
> exposed submission endpoint, it would be preferable to at least also allow
> some primitive form of authentication at a global level, whether this is by
> some token provided to the runtime environment or is a "system user" using
> basic authentication of a username/password combination - I am not strictly
> opinionated and I think either would suffice.
> I appreciate that one could implement a custom proxy to provide this
> authentication check, but it seems like a common use case that others may
> benefit from to be able to authenticate against the rest submission endpoint,
> and by implementing this capability as an optionally configurable aspect of
> Spark itself, we can utilise the existing server to provide this check.
> I would imagine that whatever solution is agreed for a first phase, a custom
> authenticator may be something we want a user to be able to provide so that
> if an admin needed some more advanced authentication check, such as RBAC et
> al, it could be facilitated without the need for writing a complete custom
> proxy layer; but I do feel there should be some basic built in available; eg.
> RestSubmissionBasicAuthenticator.
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