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Projeto

Que tal um projeto integrando toda a explicação até aqui?

Vamos usar o docker samples.

Crie um .yaml:

apiVersion: v1
kind: Service
metadata:
  name: db
  labels:
    app: words-db
spec:
  ports:
    - port: 5432
      targetPort: 5432
      name: db
  selector:
    app: words-db
  clusterIP: None
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: db
  labels:
    app: words-db
spec:
  selector:
    matchLabels:
      app: words-db
  template:
    metadata:
      labels:
        app: words-db
    spec:
      containers:
      - name: db
        image: dockersamples/k8s-wordsmith-db
        ports:
        - containerPort: 5432
          name: db
---
apiVersion: v1
kind: Service
metadata:
  name: words
  labels:
    app: words-api
spec:
  ports:
    - port: 8080
      targetPort: 8080
      name: api
  selector:
    app: words-api
  clusterIP: None
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: words
  labels:
    app: words-api
spec:
  replicas: 5
  selector:
    matchLabels:
      app: words-api
  template:
    metadata:
      labels:
        app: words-api
    spec:
      containers:
      - name: words
        image: dockersamples/k8s-wordsmith-api
        ports:
        - containerPort: 8080
          name: api
---
apiVersion: v1
kind: Service
metadata:
  name: web
  labels:
    app: words-web
spec:
  ports:
    - port: 8081
      targetPort: 80
      name: web
  selector:
    app: words-web
  type: LoadBalancer
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: web
  labels:
    app: words-web
spec:
  selector:
    matchLabels:
      app: words-web
  template:
    metadata:
      labels:
        app: words-web
    spec:
      containers:
      - name: web
        image: dockersamples/k8s-wordsmith-web
        ports:
        - containerPort: 80
          name: words-web

Em seguida:

kubectl apply -f kube-deployment.yml

Para verificar os serviços ativos:

kubectl get svc

NAME         TYPE           CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE
db           ClusterIP      None            <none>        5432/TCP         17s
kubernetes   ClusterIP      10.96.0.1       <none>        443/TCP          3d23h
svc-pod      ClusterIP      10.105.54.122   <none>        9000/TCP         24h
svc-pod2     NodePort       10.98.89.245    <none>        5000:30000/TCP   61m
web          LoadBalancer   10.97.254.156   <pending>     8081:31555/TCP   17s
words        ClusterIP      None            <none>        8080/TCP         17s

No meu caso ele redirecionou o Load Balance para porta 31555, ficando assim 192.168.49.2:31555. Se precisar do INTERNAL-IP, basta executar kubectl get nodes -o wide.