docs: admin guide for kernel keyring sysctl settings (Docker-in-LXC quota fix)#280
Draft
docs: admin guide for kernel keyring sysctl settings (Docker-in-LXC quota fix)#280
Conversation
Agent-Logs-Url: https://github.com/mieweb/opensource-server/sessions/aa2ca390-e572-4a49-a6b1-c81d0c38e951 Co-authored-by: runleveldev <44057501+runleveldev@users.noreply.github.com>
Copilot
AI
changed the title
[WIP] Fix bug unable to join session keyring due to disk quota
docs: admin guide for kernel keyring sysctl settings (Docker-in-LXC quota fix)
Apr 7, 2026
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
runcinside unprivileged LXC containers exhausts the per-UID kernel keyring quota, crashing Docker builds withunable to create session key: disk quota exceeded. The fix is host-level — raise the kernel limits so the container's unprivileged UID gets the same ceiling as real host root.Changes
docs/admins/kernel-keyring.md— new page covering:sysctl -w) and persistent (/etc/sysctl.d/) application methodsdocs/admins/index.md— linked the new page# /etc/sysctl.d/99-kernel-keys.conf kernel.keys.maxkeys=200000 kernel.keys.maxbytes=2000000Apply on every Proxmox node running Docker-in-LXC workloads, then
sysctl --system.