入力: kustomization.yaml、deployment.yaml、service.yaml ファイル

# kustomization.yaml
namePrefix: "test-"
vars:
  # Name of the variable so it can be referenced
- name: BACKEND_SERVICE_NAME
  # GVK of the object with the field
  objref:
    kind: Service
    name: backend-service
    apiVersion: v1
  # Path to the field
  fieldref:
    fieldpath: metadata.name
resources:
- deployment.yaml
- service.yaml

# service.yaml
kind: Service
apiVersion: v1
metadata:
  # Value of the variable.  This will be customized with
  # a namePrefix, and change the Variable value.
  name: backend-service
spec:
  selector:
    app: backend
  ports:
  - protocol: TCP
    port: 80
    targetPort: 9376

# deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: curl-deployment
  labels:
    app: curl
spec:
  selector:
    matchLabels:
      app: curl
  template:
    metadata:
      labels:
        app: curl
    spec:
      containers:
      - name: curl
        image: ubuntu
        # Reference the Service name field value as a variable
        command: ["curl", "$(BACKEND_SERVICE_NAME)"]

適用: クラスタに適用されるリソース

apiVersion: v1
kind: Service
metadata:
  name: test-backend-service
spec:
  ports:
  - port: 80
    protocol: TCP
    targetPort: 9376
  selector:
    app: backend
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: test-curl-deployment
  labels:
    app: curl
spec:
  selector:
    matchLabels:
      app: curl
  template:
    metadata:
      labels:
        app: curl
    spec:
      containers:
      - command:
        - curl
        # $(BACKEND_SERVICE_NAME) has been resolved to
        # test-backend-service
        - test-backend-service
        image: ubuntu
        name: curl