Kubernetes Service

apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp-deploy
  namespace: default
spec:
  replicas: 3
  selector:
    matchLabels:
      app: myapp
      release: stabel
  template:
    metadata:
      labels:
        app: myapp
        release: stabel
        env: test
    spec:
      containers:
      - name: myapp
        image: nginx:1.16.1
        imagePullPolicy: IfNotPresent
        ports:
        - name: http
          containerPort: 80
		
---
apiVersion: v1
kind: Service
metadata:
  name: myapp
  namespace: default
spec:
  type: ClusterIP
  selector:
    app: myapp
    release: stabel
  ports:
  - name: http
    port: 80
    targetPort: 80

---
apiVersion: v1
kind: Service
metadata:
  name: myapp-headless
  namespace: default
spec:
  selector:
    app: myapp
  clusterIP: "None"
  ports:
  - port: 80
    targetPort: 80
	


kubectl get pod -n kube-system

yum install build-utils -y

dig -t A myapp-headless.default.svc.cluster.local. @10.244.0.4


---
apiVersion: v1
kind: Service
metadata:
  name: myapp
  namespace: default
spec:
  type: NodePort
  selector:
    app: myapp
    release: stabel
  ports:
  - name: http
    port: 80
    targetPort: 80


[[email protected] ~]# kubectl get svc
NAME             TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)        AGE
kubernetes       ClusterIP   10.96.0.1        <none>        443/TCP        4d23h
myapp            NodePort    10.108.120.242   <none>        80:31816/TCP   5m59s
myapp-headless   ClusterIP   None             <none>        80/TCP         29m

curl 192.168.123.185:31816 
curl 192.168.123.185:31816