node-feature-discovery/docs/deployment/uninstallation.md

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Uninstallation	default	5

Uninstallation

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Follow the uninstallation instructions of the deployment method used (kustomize, helm or operator).

Removing feature labels

NOTE: This is unnecessary when using the Helm chart for deployment as it will clean up the nodes when NFD is uninstalled.

NFD-Master has a special -prune command line flag for removing all nfd-related node labels, annotations, extended resources and taints from the cluster.

kubectl apply -k "https://github.com/kubernetes-sigs/node-feature-discovery/deployment/overlays/prune?ref={{ site.release }}"
kubectl -n node-feature-discovery wait job.batch/nfd-master --for=condition=complete && \
    kubectl delete -k "https://github.com/kubernetes-sigs/node-feature-discovery/deployment/overlays/prune?ref={{ site.release }}"

NOTE: You must run prune before removing the RBAC rules (serviceaccount, clusterrole and clusterrolebinding).