Kubectl with kustomize should patch a value but will not

Regional Discussions
1

I have a base and overlay system. Something similar to the following code part.

apiVersion: apps/v1
  kind: Deployment
  metadata:
    name: frontend-deployment
  spec:
    selector:
    matchLabels:
      app: frontend-deployment
    template:
    metadata:
      labels:
        app: frontend-deployment
    spec:
      containers:
      - name: app
        image: foo/bar:latest
        ports:
        - name: http
          containerPort: 80
          protocol: TCP

Now I would like to patch the “containerPort: 80” to something different like “containerPort:1080”

in my kustomize.yaml I have

namePrefix: qa1-
transformers:
  - deploy-prefix-transformer.yaml
[...]
patchesStrategicMerge:
  - patches/backup-cronjob-overlay.yaml        # works like a charm
  [...]

patches:
  - path: patches/change-containerport.yaml
    target:
      kind: Deployment
      name: qa1-frontend-deployment

within the change-containerport.yaml

- op: replace
  path: "/spec/template/spec/containers/0/ports/0/containerPort"
  # also tested path: spec.template.spec.containers[0].ports[0].containerPort"
  value: 1080

Within kubectl apply -k . there comes no error messages, but the result is that the containerPort is NOT change to 1080.

What is the right way to replace the value?

Kind regards.

2

A colleague found a solution to the problem.

The name in the patches must not contain the namePrefix.

patches:
  - path: patches/change-containerport.yaml
    target:
      kind: Deployment
      name: frontend-deployment