On a recent dive into k0s, I stumbled across an issue where the csi-driver-nfs was not working straight out of the box and the k0s docs don't directly demonstrate this particular driver.
The error I was getting was:
k0s MountVolume.SetUp failed for volume "pods-mount-dir" : hostPath type check failed: /var/lib/kubelet/pods is not a directory
Thanks to the microk8s docs I was able to figure out that just like microk8s, k0s has a non standard kublet path - /var/lib/k0s/kubelet.
The solution was simply to tell the csi-driver-nfs helm chart to use the non standard path by adding the following to the values.yaml file:
# values.yaml
kubeletDir: /var/lib/k0s/kubelet
or alternatively, you can pass it in as a flag to the helm install command:
helm install csi-driver-nfs csi-driver-nfs/csi-driver-nfs --namespace kube-system --set kubeletDir=/var/lib/k0s/kubelet