[K8s] LoadBalancer (AKS에서 진행)

LoadBalancer란?

• Public cloud (AWS,Azure, GCP 등)에서 운영 가능
• LoadBalancer를 자동으로 구성 요청
• NodePort를 예약 후 해당 nodeport로 외부 접근 허용
• definition

apiVersion: v1
kind: Service
metadata:
  name: loadbalancer-service
spec:
  type: LoadBalancer
  selector:
    app: webui
  ports:
  - protocol: TCP
    port: 80
    targetPort: 80

 

[ Hands - on ]

• LoadBalancer yaml 파일 생성 및 실행

vi loadbalancer-nginx.yaml

apiVersion: v1
kind: Service
metadata:
  name: loadbalancer-service
spec:
  type: LoadBalancer
  selector:
    app: webui
  ports:
  - protocol: TCP
    port: 80
    targetPort: 80

kubectl create -f vi loadbalancer-nginx.yaml

 

• LoadBalancer 생성 확인

kubectl get service

NAME                   TYPE           CLUSTER-IP     EXTERNAL-IP   PORT(S)        AGE
kubernetes             ClusterIP      10.0.0.1       <none>        443/TCP        23m
loadbalancer-service   LoadBalancer   10.0.236.121   20.89.37.3    80:31394/TCP   18s

 

• 외부 loadbalancer IP로 pod 접속 확인

 

• Internal loadbalancer 생성하기

vi internalloadbalancer-nginx.yaml

apiVersion: v1
kind: Service
metadata:
  name: loadbalancer-service
  annotations:
    service.beta.kubernetes.io/azure-load-balancer-internal: "true"
spec:
  type: LoadBalancer
  selector:
    app: webui
  ports:
  - protocol: TCP
    port: 80
    targetPort: 80

kubectl create -f internalloadbalancer-nginx.yaml

 

• internal LoadBalancer 생성 확인

kubectl get servic

NAME                   TYPE           CLUSTER-IP     EXTERNAL-IP   PORT(S)        AGE
kubernetes             ClusterIP      10.0.0.1       <none>        443/TCP        98s
loadbalancer-service   LoadBalancer   10.0.213.151   <pending>     80:30102/TCP   12

 

 

참고 :

https://www.youtube.com/watch?v=WaJyY5KvZj8&list=PLApuRlvrZKohaBHvXAOhUD-RxD0uQ3z0c&index=26