user-namespaces.md: subid count per pod is hard-coded to 65536 #49288
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Opened a PR to allow customizing the count too: |
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Please consider mentioning the hard coded range under the (existing) heading “Understanding user namespaces for pods)”
The whole page needs more work and is not yet at beta quality. However, small targeted PRs like this are the right way to make incremental improvements.
The number of subuids and subgids for each of pods is hard-coded to 65536, regardless to the total ID count specified in `/etc/subuid` and `/etc/subgid`: https://github.com/kubernetes/kubernetes/blob/v1.32.0/pkg/kubelet/userns/userns_manager.go#L211-L228 This fact was not clarified in the documentation. Co-authored-by: Tim Bannister <[email protected]> Signed-off-by: Akihiro Suda <[email protected]>
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Description
The number of subuids and subgids for each of pods is hard-coded to 65536, regardless to the total ID count specified in
/etc/subuidand/etc/subgid: https://github.com/kubernetes/kubernetes/blob/v1.32.0/pkg/kubelet/userns/userns_manager.go#L211-L228This fact was not clarified in the documentation.
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