Proxmox Upgrade Experience: Resolving Docker-in-LXC AppArmor Issues
By
speckx
Toasted golden, schmeared with insight. Top of the rack.
Summary
The article describes the author's experience with upgrading Proxmox from version 8 to 9 to resolve issues with running Docker inside LXC containers. The author encountered AppArmor-related problems when trying to deploy applications like coolify and dokploy in their homelab, which were traced to a runc issue that was fixed in the newer pve-lxc package available only in Proxmox 9. The upgrade process was straightforward for one node but encountered issues with the second node.
Key quotes
· 4 pulledRunning docker inside LXC is weird. It's containers on top of other container
there was a fairly recent issue with AppArmor that prevented some functionality from running inside a docker container with very cryptic error
I was trying to deploy coolify and/or dokploy in my homelab and hitting all sorts of weird issues
apparently, it was fixed in the new version of pve-lxc package. But I'm still on Proxmox 8, and the new version seemingly only available in Proxmox 9
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