Deleting Stuck or Hung Kubernetes CRD's and CR's

fix.sh

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# How to patch and delete CustomResourceDefinitions and CustomResources in Kubernetes
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#
# Just copied and pasted from this solution in a kubernetes bug report:
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# https://github.com/kubernetes/kubernetes/issues/60538
#

# remove the CRD finalizer blocking on custom resource cleanup
kubectl patch crd/crontabs.stable.example.com -p '{"metadata":{"finalizers":[]}}' --type=merge

# now the CRD can be deleted (orphaning custom resources in etcd)
kubectl delete -f crd.yaml 
customresourcedefinition.apiextensions.k8s.io "crontabs.stable.example.com" deleted
Error from server (NotFound): error when deleting "crd.yaml": the server could not find the requested resource (delete crontabs.stable.example.com my-new-cron-object)

# when the CRD is recreated, it resurfaces the existing custom resources
kubectl create -f crd.yaml
customresourcedefinition.apiextensions.k8s.io "crontabs.stable.example.com" created
Error from server (AlreadyExists): error when creating "crd.yaml": object is being deleted: crontabs.stable.example.com "my-new-cron-object" already exists

# the custom resources can now be edited to remove finalizers
kubectl patch crontab/my-new-cron-object -p '{"metadata":{"finalizers":[]}}' --type=merge
crontab.stable.example.com "my-new-cron-object" patched

# and now both custom resource and CRD can be deleted
kubectl delete -f crd.yaml 
customresourcedefinition.apiextensions.k8s.io "crontabs.stable.example.com" deleted
Error from server (NotFound): error when deleting "crd.yaml": crontabs.stable.example.com "my-new-cron-object" not found