Edit Deployment Directly

$ kubectl -n flux-system edit deployment helm-controller

Export and Update

$ kubectl -n flux-system get deployment helm-controller -o yaml > helm-controller.yaml
$ vi helm-controller.yaml 
$ kubectl apply -f helm-controller.yaml


Patch a Deployment

Patch:

spec:
  template:
    spec:
      securityContext:
        runAsUser: 999


$ kubectl -n flux-system patch deployment notification-controller --patch "$(cat patch.yaml)"


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