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From "Eric Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7516) Security check for untrusted docker image
Date Thu, 18 Jan 2018 22:41:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16331367#comment-16331367
] 

Eric Yang commented on YARN-7516:
---------------------------------

YARN will attempt to bind mount node manager local directory for app cache, file cache, and
user cache directories into docker container in the current implementation.  In patch 009,
it will report \{{INVAID_DOCKER_*_MOUNT}} message which disallowed all untrusted docker image
to run.  Patch 10 will allow untrusted image to run, but it will omit any app cache, file
cache, and user cache directories to be mounted.  [~ebadger] [~billie.rinaldi]  Could you
review patch 10?  Thanks

> Security check for untrusted docker image
> -----------------------------------------
>
>                 Key: YARN-7516
>                 URL: https://issues.apache.org/jira/browse/YARN-7516
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Eric Yang
>            Assignee: Eric Yang
>            Priority: Major
>         Attachments: YARN-7516.001.patch, YARN-7516.002.patch, YARN-7516.003.patch, YARN-7516.004.patch,
YARN-7516.005.patch, YARN-7516.006.patch, YARN-7516.007.patch, YARN-7516.008.patch, YARN-7516.009.patch,
YARN-7516.010.patch
>
>
> Hadoop YARN Services can support using private docker registry image or docker image
from docker hub.  In current implementation, Hadoop security is enforced through username
and group membership, and enforce uid:gid consistency in docker container and distributed
file system.  There is cloud use case for having ability to run untrusted docker image on
the same cluster for testing.  
> The basic requirement for untrusted container is to ensure all kernel and root privileges
are dropped, and there is no interaction with distributed file system to avoid contamination.
 We can probably enforce detection of untrusted docker image by checking the following:
> # If docker image is from public docker hub repository, the container is automatically
flagged as insecure, and disk volume mount are disabled automatically, and drop all kernel
capabilities.
> # If docker image is from private repository in docker hub, and there is a white list
to allow the private repository, disk volume mount is allowed, kernel capabilities follows
the allowed list.
> # If docker image is from private trusted registry with image name like "private.registry.local:5000/centos",
and white list allows this private trusted repository.  Disk volume mount is allowed, kernel
capabilities follows the allowed list.



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