spec.template

 template.metadata.labels.app

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  labels:
    app: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.14.2
        ports:
        - containerPort: 80

Related

• Awareness of manifest management and common templating tools

See also

• kind: Deployment, kubectl apply, kubectl set image, kubectl create deploy
• Template, gotmpl, templating, spec.template, Apache FreeMarker