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https://issues.apache.org/jira/browse/YARN-9860?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16945138#comment-16945138
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Prabhu Joseph commented on YARN-9860:
-------------------------------------
[~eyang] 1. Have used the value of hadoop.tmp.dir for public resource directory.
2. The existing behavior by default sets APPLICATION visibility
for all files to be localized including keytab.
* * CoreFileSystem#createAmResource*
{code}
// Setting to most private option
- amResource.setVisibility(LocalResourceVisibility.APPLICATION);
+ if (visibility == null) {
+ visibility = LocalResourceVisibility.APPLICATION;
+ }
+ amResource.setVisibility(visibility);
{code}
Have changed the Keytab file visibility to PRIVATE and left others with default
APPLICATION and can be overridden by user.
> Enable service mode for Docker containers on YARN
> -------------------------------------------------
>
> Key: YARN-9860
> URL: https://issues.apache.org/jira/browse/YARN-9860
> Project: Hadoop YARN
> Issue Type: Improvement
> Affects Versions: 3.3.0
> Reporter: Prabhu Joseph
> Assignee: Prabhu Joseph
> Priority: Major
> Attachments: YARN-9860-001.patch, YARN-9860-002.patch,
> YARN-9860-003.patch, YARN-9860-004.patch, YARN-9860-005.patch,
> YARN-9860-006.patch, YARN-9860-007.patch
>
>
> This task is to add support to YARN for running Docker containers in "Service
> Mode".
> Service Mode - Run the container as defined by the image, but still allow for
> injecting configuration.
> Background:
> Entrypoint mode helped - now able to use the ENV and ENTRYPOINT/CMD as
> defined in the image. However, still requires modification to official images
> due to user propagation
> User propagation is problematic for running a secure cluster with sssd
>
> Implementation:
> Must be enabled via c-e.cfg (example: docker.service-mode.allowed=true)
> Must be requested at runtime - (example:
> YARN_CONTAINER_RUNTIME_DOCKER_SERVICE_MODE=true)
> Entrypoint mode is default enabled for this mode (If Service Mode is
> requested, YARN_CONTAINER_RUNTIME_DOCKER_RUN_OVERRIDE_DISABLE should be set
> to true)
> Writable log mount will not be added - stdout logging may still work
> with entrypoint mode - remove the writable bind mounts
> User and groups will not be propagated (now: docker run --user nobody
> --group-add=nobody .... <image>, after: docker run .... <image>)
> Read-only resources mounted at the file level, files get chmod 777,
> parent directory only accessible by the run as user.
> cc [[email protected]]
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