Ignore fields if it does not exist

[ahd3r]

Hello everyone.

I am having a problem with creating a patch to remove a field from bulk resources.
My kustomization.yaml config:

...
resources:
  - configmap.yaml
  - deployment.yaml
  - service.yaml
  - namespace.yaml
  - ...
...
patches:
  - target: {}
    patch: |-
      - op: remove
        path: /metadata/labels/purpose

As you can see, I try to remove the label purpose from all the resources. I can't do it one by one cuz there are too many; I need to do it in bulk. The problem is that not all resources may have this label, and I am receiving the error: Error: remove operation does not apply: doc is missing path: "/metadata/labels/purpose": missing value.
How can I remove it from those who have this value and ignore it for those who don't?

[kferrone]

Simply set it so it always exists first. Since you are deleting it setting it to na just ensures it exists before removing it. Also add will simply replace if the key exists without issue.

    - op: add
      path: /metadata/labels/purpose
      value: na
    - op: remove
      path: /metadata/labels/purpose