Ensure devicemapper storage driver is not used

How it is checked

Audit method: Shell command

d=$(docker info --format '{{.Driver}}') || exit 1; [ "$d" = devicemapper ] && echo "$d" || echo compliant

Expected output

compliant

How it is fixed

Fix method: Guidance or infrastructure patch

Migrate to the overlay2 storage driver ("storage-driver": "overlay2" in /etc/docker/daemon.json), re-pull or rebuild images and restart the Docker daemon.

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

tmaegis scan --target docker