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https://issues.apache.org/jira/browse/HDDS-1609?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16862817#comment-16862817
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Elek, Marton commented on HDDS-1609:
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Thank you very much to report the problem [~eyang]. It's easier to discuss
about concrete problems.
For me, it worked well on OSX (but it may depend from the docker version.
docker4mac can handle the uid mapping but I am not sure about all the older
docker versions).
I also tried it on linux. I found a problem with the specific auditparser test
(HDDS-1677) but after that it is also passed (see the attachments).
Can you please share the content of your result folder after the test?
> Remove hard coded uid from Ozone docker image
> ---------------------------------------------
>
> Key: HDDS-1609
> URL: https://issues.apache.org/jira/browse/HDDS-1609
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Reporter: Eric Yang
> Priority: Major
> Fix For: 0.5.0
>
>
> Hadoop-runner image is hard coded to [USER
> hadoop|https://github.com/apache/hadoop/blob/docker-hadoop-runner-jdk11/Dockerfile#L45]
> and user hadoop is hard coded to uid 1000. This arrangement complicates
> development environment where host user is different uid from 1000. External
> bind mount locations are written data as uid 1000. This can prevent
> development environment from clean up test data.
> Docker documentation stated that "The best way to prevent
> privilege-escalation attacks from within a container is to configure your
> container’s applications to run as unprivileged users." From Ozone
> architecture point of view, there is no reason to run Ozone daemon to require
> privileged user or hard coded user.
> h3. Solution 1
> It would be best to support running docker container as host user to reduce
> friction. User should be able to run:
> {code}
> docker run -u $(id -u):$(id -g) ...
> {code}
> or in docker-compose file:
> {code}
> user: "${UID}:${GID}"
> {code}
> By doing this, the user will be name less in docker container. Some commands
> may warn that user does not have a name. This can be resolved by mounting
> /etc/passwd or a file that looks like /etc/passwd that contain host user
> entry.
> h3. Solution 2
> Move the hard coded user to range < 200. The default linux profile reserves
> service users < 200 to have umask that keep data private to service user or
> group writable, if service shares group with other service users. Register
> the service user with Linux vendors to ensure that there is a reserved uid
> for Hadoop user or pick one that works for Hadoop. This is a longer route to
> pursuit, and may not be fruitful.
> h3. Solution 3
> Default the docker image to have sssd client installed. This will allow
> docker image to see host level names by binding sssd socket. The instruction
> for doing this is located at in [Hadoop website|
> https://hadoop.apache.org/docs/r3.1.2/hadoop-yarn/hadoop-yarn-site/DockerContainers.html#User_Management_in_Docker_Container].
> The pre-requisites for this approach will require the host level system to
> have sssd installed. For production system, there is a 99% chance that sssd
> is installed.
> We may want to support combined solution of 1 and 3 to be proper.
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