Kubernetes first elements

deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp
  labels:
    app: myapp
spec:
  replicas: 3
  template:
    metadata:
      labels:
        app: myapp
    spec:
      containers:
      - name: nginx
        image: nginx:1.17.8
        ports:
        - containerPort: 80

ingress.yaml

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: myapp
  annotations:
    # cloud-specific annotations may be necessary
spec:
  rules:
  - host: my.example.com
    http:
      paths:
      - path: /
        backend:
          serviceName: myapp
          servicePort: 80

pod.yaml

apiVersion: v1
kind: Pod
metadata:
  name: myapp
  labels:
    app: myapp
spec:
  containers:
  - name: nginx
    image: nginx:1.17.8
    ports:
    - containerPort: 80

service.yaml

apiVersion: v1
kind: Service
metadata:
  name: myapp
  labels:
    app: myapp
spec:
  selector:
    app: myapp
  type: NodePort
  ports:
  - port: 80
    targetPort: 80
    protocol: TCP