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From "Alejandro Abdelnur (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2858) MRv2 WebApp Security
Date Wed, 12 Oct 2011 21:43:12 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13126180#comment-13126180
] 

Alejandro Abdelnur commented on MAPREDUCE-2858:
-----------------------------------------------

[Chiming in a bit late in the discussion]

Until now Hadoop webui was supporting authentication via servlet filters initialized via the
"hadoop.http.filter.initializers" config property. Alfredo was integrated using such mechanism
as well. In addition Alfredo support pluggable authentication handlers.

This means there are 2 ways o handling security, one directly via servlet-filters, the other
via Alfredo authentication-handlers.

Wouldn't be enough to tell application managers to use the provided filters or add their own?


And accessing NM HTTP resources could be done via a domain cookie given by the RM to the AM
at AM initialization time. This cookie could be verified by NMs via a shared secret received
at startup time from the RM (which could be a random value generated at RM startup time).

Then we would not need whitelists or trusted proxies.



                
> MRv2 WebApp Security
> --------------------
>
>                 Key: MAPREDUCE-2858
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2858
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: applicationmaster, mrv2, security
>    Affects Versions: 0.23.0
>            Reporter: Luke Lu
>            Assignee: Luke Lu
>            Priority: Blocker
>             Fix For: 0.23.0
>
>
> In MRv2, while the system servers (ResourceManager (RM), NodeManager (NM) and NameNode
(NN)) run as "trusted"
> system users, the application masters (AM) run as users who submit the application. While
this offers great flexibility
> to run multiple version of mapreduce frameworks (including their UI) on the same Hadoop
cluster, it has significant
> implication for the security of webapps (Please do not discuss company specific vulnerabilities
here).
> Requirements:
> # Secure authentication for AM (for app/job level ACLs).
> # Webapp security should be optional via site configuration.
> # Support existing pluggable single sign on mechanisms.
> # Should not require per app/user configuration for deployment.
> # Should not require special site-wide DNS configuration for deployment.
> This the top jira for webapp security. A design doc/notes of threat-modeling and counter
measures will be posted on the wiki.

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