[Kubernetes] K8S nodeport

# pod 생성

kubectl create deployment np-pods --image=sysnet4admin/echo-hname

# nodeport 실습
vi nodeport.yaml

# nodeport.yaml 
apiVersion: v1
kind: Service
metadata:
  name: np-svc
spec:
  selector:
    app: np-pods 
  ports:
    - name: http
      protocol: TCP
      port: 80
      targetPort: 80
      nodePort: 30000
  type: NodePort

kubectl create -f nodeport.yaml

# node 수 3개
kubectl scale deployment np-pods --replicas=3

# np-pod와 같이 묶임
kubectl expose deployment np-pods --type=NodePort --name=np-svc-v2 --port=80

ubuntu@ip-172-31-8-104:~$ k get services
NAME         TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)        AGE
kubernetes   ClusterIP   10.100.0.1       <none>        443/TCP        105m
np-svc       NodePort    10.100.116.82    <none>        80:30000/TCP   39m
np-svc-v2    NodePort    10.100.203.222   <none>        80:32465/TCP   72s

# 삭제(순서대로 안하면 다시 살아남)
kubectl delete deployment np-pods
kubectl delete services np-svc 
kubectl delete services np-svc-v2