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From "Robert Kanter (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (YARN-6586) YARN to facilitate HTTPS in AM web server
Date Tue, 23 Oct 2018 22:42:00 GMT

     [ https://issues.apache.org/jira/browse/YARN-6586?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Kanter resolved YARN-6586.
---------------------------------
       Resolution: Fixed
    Fix Version/s: 3.3.0

All subtasks are now complete.

Thanks for the reviews, especially [~haibochen]; and the help with the dependency issues,
especially [~eyang].

> YARN to facilitate HTTPS in AM web server
> -----------------------------------------
>
>                 Key: YARN-6586
>                 URL: https://issues.apache.org/jira/browse/YARN-6586
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: yarn
>    Affects Versions: 3.0.0-alpha2
>            Reporter: Haibo Chen
>            Assignee: Robert Kanter
>            Priority: Major
>             Fix For: 3.3.0
>
>         Attachments: Design Document v1.pdf, Design Document v2.pdf, YARN-6586.poc.patch
>
>
> MR AM today does not support HTTPS in its web server, so the traffic between RMWebproxy
and MR AM is in clear text.
> MR cannot easily achieve this mainly because MR AMs are untrusted by YARN. A potential
solution purely within MR, similar to what Spark has implemented, is to allow users, when
they enable HTTPS in MR job, to provide their own keystore file, and then the file is uploaded
to distributed cache and localized for MR AM container. The configuration users need to do
is complex.
> More importantly, in typical deployments, however, web browsers go through RMWebProxy
to indirectly access MR AM web server. In order to support MR AM HTTPs, RMWebProxy therefore
needs to trust the user-provided keystore, which is problematic.  
> Alternatively, we can add an endpoint in NM web server that acts as a proxy between AM
web server and RMWebProxy. RMWebproxy, when configured to do so, will send requests in HTTPS
to the NM on which the AM is running, and the NM then can communicate with the local AM web
server in HTTP.   This adds one hop between RMWebproxy and AM, but both MR and Spark can use
such solution.



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