01_kustomization.yml

resources:
  - deploy.yml

namePrefix: xxx-

configurations:
  - configurations.yml

02_configurations.yml

nameReference:
  - version: v1
    kind: Deployment
    fieldSpecs:
      - version: v1
        kind: Deployment
        path: spec/template/spec/affinity/podAffinity/requiredDuringSchedulingIgnoredDuringExecution/labelSelector/matchExpressions/values

03_deploy.yml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: deploy
  labels:
    app: deploy
spec:
  replicas: 1
  selector:
    matchLabels:
      app: deploy
  template:
    metadata:
      labels:
        app: deploy
    spec:
      affinity:
        podAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            - labelSelector:
                matchExpressions:
                  - key: app
                    operator: In
                    values:
                      - deploy
              topologyKey: kubernetes.io/hostname
      containers:
        - name: container
          image: busybox

99_kustomize_build.yml

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: deploy
  name: xxx-deploy
spec:
  replicas: 1
  selector:
    matchLabels:
      app: deploy
  template:
    metadata:
      labels:
        app: deploy
    spec:
      affinity:
        podAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
          - labelSelector:
              matchExpressions:
              - key: app
                operator: In
                values:
                - xxx-deploy
            topologyKey: kubernetes.io/hostname
      containers:
      - image: busybox
        name: container