The Spin containerd shim uses runwasi which allows for configuring which cgroups format to use depending on the cgroups driver of the installed Kubernetes distribution. Runwasi defaults to cgroupsfs even through most Kubernetes distributions use systemd. In the Shim node installer, systemd is configured on most distros. RCM should also configure this if a flag is set in the chart (say cgroupDriver.systemd=true)

If it is not configured correctly, Pod metrics will be unscrapable by kubelet , resulting in Spin deployments that are incompatible with HPA etc.