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@mburke5678 mburke5678 commented Oct 13, 2025

https://issues.redhat.com/browse/OSDOCS-16556

From thread in Slack.

Link to docs preview:
Running pods in Linux user namespaces -- New paragraph 4 and Note.

SME review:

QE review:

  • QE has approved this change.

@mburke5678 mburke5678 added this to the Planned for 4.20 GA milestone Oct 13, 2025
@openshift-ci openshift-ci bot added the size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. label Oct 13, 2025
@mburke5678 mburke5678 force-pushed the node-user-ns-known-issue branch from b0ca24c to f69ac7f Compare October 13, 2025 20:27
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ocpdocs-previewbot commented Oct 13, 2025

🤖 Fri Oct 17 12:39:39 - Prow CI generated the docs preview:

https://100433--ocpdocs-pr.netlify.app/openshift-enterprise/latest/nodes/pods/nodes-pods-user-namespaces.html

@mburke5678 mburke5678 changed the title Linux User Namespace ID-mapped mount inforation Linux User Namespace ID-mapped mount information Oct 13, 2025
@openshift openshift deleted a comment from ocpdocs-vale-bot Oct 14, 2025
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@haircommander PTAL

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LGTM

@openshift openshift deleted a comment from ocpdocs-vale-bot Oct 14, 2025
@mburke5678 mburke5678 force-pushed the node-user-ns-known-issue branch from f69ac7f to fc327f4 Compare October 14, 2025 13:45
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@lyman9966 Peter Hunt suggested you could review this PR for us. We are hoping to get this in for 4.20. Thank you!

@openshift openshift deleted a comment from ocpdocs-vale-bot Oct 15, 2025
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/lgtm

@openshift-ci openshift-ci bot added the lgtm Indicates that a PR is ready to be merged. label Oct 16, 2025
@mburke5678 mburke5678 force-pushed the node-user-ns-known-issue branch from fc327f4 to a8198fb Compare October 17, 2025 12:32
@openshift-ci openshift-ci bot removed the lgtm Indicates that a PR is ready to be merged. label Oct 17, 2025
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openshift-ci bot commented Oct 17, 2025

New changes are detected. LGTM label has been removed.

@mburke5678 mburke5678 changed the title Linux User Namespace ID-mapped mount information OSDOCS Linux User Namespace ID-mapped mount information Oct 17, 2025
@@ -12,6 +12,13 @@ By default, a container runs in the host user namespace. Running a container in

Running containers in individual user namespaces can mitigate container breakouts and several other vulnerabilities that a compromised container can pose to other pods and the node itself.

When running a pod in an isolated user namespace, the UID/GID inside a pod container no longer matches the UID/GID on the host. In order for file system ownership to work correctly, the Linux kernel uses ID-mapped mounts, which translate user IDs between the container and the host at the virtual file system (VFS) layer.
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🤖 [error] Vale.Terms: Use 'VFs?' instead of 'VFS'.

@mburke5678 mburke5678 added the merge-review-needed Signifies that the merge review team needs to review this PR label Oct 17, 2025
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openshift-ci bot commented Oct 17, 2025

@mburke5678: all tests passed!

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@mburke5678 mburke5678 changed the title OSDOCS Linux User Namespace ID-mapped mount information OSDOCS 16556 Linux User Namespace ID-mapped mount information Oct 17, 2025
@xenolinux xenolinux added merge-review-in-progress Signifies that the merge review team is reviewing this PR and removed merge-review-needed Signifies that the merge review team needs to review this PR labels Oct 17, 2025
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LGTM

@xenolinux xenolinux removed the merge-review-in-progress Signifies that the merge review team is reviewing this PR label Oct 17, 2025
@xenolinux xenolinux merged commit 9e83629 into openshift:main Oct 17, 2025
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/cherrypick enterprise-4.20

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@xenolinux: new pull request created: #100733

In response to this:

/cherrypick enterprise-4.20

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