docker: Add troubleshooting for permission errors on /dev/kvm #468
Conversation
This file contains 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
I got a `permission denied` error when trying to use the KVM fakemachine backend on a host. The Docker documentation indicates that "the docker container process runs with the supplementary groups looked up for the specified user," but I suspect this means the groups _inside_ the container are looked up. I added the owning group of `/dev/kvm` (which happened to be `kvm`) to the container and all is well.
obbardc
requested changes
Jan 8, 2024
obbardc
approved these changes
Jan 10, 2024
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Outdated suggestions cannot be applied.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.
I got a
permission deniederror when trying to use the KVM fakemachine backend on a host. The Docker documentation indicates that "the docker container process runs with the supplementary groups looked up for the specified user," but I suspect this means the groups inside the container are looked up. I added the owning group of/dev/kvm(which happened to bekvm) to the container and all is well.