How to remove an entry matching a name key?

[mfn]

Hello 👋🏼 ,

I'm trying to process a k8s kustomization.yaml and remove a matching entry completely. I could not find a native way using the kustomize tools so I figured I give yq a spin.

The part I'm interesting looks like this:

resources:
 - resource1

images:
  - name: a
    newName: repo
    newTag: tag1
  - name: b
    newName: repo
    newTag: tag2

What I would like to do is remove entry in iamges matching name: b, including it's newName and newTag so that the document afterwards looks like this:

resources:
 - resource1

images:
  - name: a
    newName: repo
    newTag: tag1

I thought I figure out how to only match one entry and then expand the expression to call del() on it, but I fail already the part here.

Some things I tried:

• yq eval 'select(.images.[])' example.yaml => full document returned
• yq eval 'select(.images.[].name == "c")' example.yaml => no output!
  So I thought I'm on the right track…
• yq eval 'select(.images.[].name == "b")' example.yaml => unfortunately same full document again 😞

I'm somewhat lost here, I tried to make sense of https://mikefarah.gitbook.io/yq/operators/select and scouted the docs already, but it just won't click for me.

Thank you 🙏🏼

[mfn]

Ok, scientific breakthrough here 😬

+ $ yq eval '.images.[] | select(.name == "b")' example.yaml
name: b
newName: repo
newTag: tag2

next try:

+ $ yq eval 'del(.images.[] | select(.name == "b"))' example.yaml
resources:
  - resource1
images:
  - name: a
    newName: repo
    newTag: tag1

Did I just figure it out ? 👀

[mikefarah]

Glad I could help 🥇