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From "Eric Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7516) Security check for untrusted docker image
Date Tue, 23 Jan 2018 00:32:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16335215#comment-16335215

Eric Yang commented on YARN-7516:

[~billie.rinaldi] Thank you for the review.  I have added check for set capabilities to allow
untrusted docker container to fail through instead of fail over.  Untrusted docker container
will run with no capabilities.  System administrator decides what capabilities are granted
for trusted containers using {{yarn.nodemanager.runtime.linux.docker.capabilities}} directive.  The
patch is rebased for current trunk.

> 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, YARN-7516.011.patch, YARN-7516.012.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
> # 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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