Deployments

app1.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: app1
  labels:
    app: app1
spec:
  replicas: 3
  selector:
    matchLabels:
      app: app1
  template:
    metadata:
      labels:
        app: app1
    spec:
      containers:
      - name: nginx
        image: nginx
        ports:
        - containerPort: 80
        command: ["/bin/sh", "-c"]
        args:
          - |
            echo '¡Soy la primera, la aplicación numero 1!' > /usr/share/nginx/html/index.html && \
            nginx -g 'daemon off;'
---
apiVersion: v1
kind: Service
metadata:
  name: servicio-app1
spec:
  selector:
    app: app1
  ports:
    - port: 8080
      targetPort: 80
  type: ClusterIP

app2.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: app2
  labels:
    app: app2
spec:
  replicas: 3
  selector:
    matchLabels:
      app: app2
  template:
    metadata:
      labels:
        app: app2
    spec:
      containers:
      - name: nginx
        image: nginx
        ports:
        - containerPort: 80
        command: ["/bin/sh", "-c"]
        args:
          - |
            echo '¡Soy la segunda, la aplicación numero 2!' > /usr/share/nginx/html/index.html && \
            nginx -g 'daemon off;'
---
apiVersion: v1
kind: Service
metadata:
  name: servicio-app2
spec:
  selector:
    app: app2
  ports:
    - port: 8080
      targetPort: 80
  type: ClusterIP

ingress-host.yaml

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: host-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  ingressClassName: nginx
  rules:
  - host: app1.127.0.0.1.nip.io
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: servicio-app1
            port:
              number: 8080
  - host: app2.127.0.0.1.nip.io
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: servicio-app2
            port:
              number: 8080

ingress.yaml

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: minimal-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  ingressClassName: nginx
  rules:
  - http:
      paths:
      - path: /app1
        pathType: Prefix
        backend:
          service:
            name: servicio-app1
            port:
              number: 8080
      - path: /app2
        pathType: Prefix
        backend:
          service:
            name: servicio-app2
            port:
              number: 8080