There's elasticsearch cluster working on self managed kubeneretes. We created helm templates from k8s manifests.

How can I manage our ELK cluster through Helm charts without losing data? (Data is stored on server disks and in provided LUN's)

We've tried add some helm labels to existing manifests like app.kubernetes.io/managed-by: Helm and annotations also like meta.helm.sh/release-name: elasticsearch, meta.helm.sh/release-namespace: elasticsearch but finally it didn't work.

Any suggestions?