CKA試験、Service（命令語のみ）

Create deployment

kubectl create deployment (deployment name) --image=nginx

ClusterIP

kubectl expose deployment -n (namespace name) (deployments name) --type=ClusterIP --port=80 --target-port=80 --name=(service name)  

NodePort

kubectl expose deployment -n (namespace name) (deployments name) --type=NodePort --port80 --target-port=80 --name=(service name) --dry-run=client -o yaml > testNodePort.yaml

(修正前) testNodePort.yaml

apiVersion: v1
kind: Service
metadata:
  creationTimestamp: null
  labels:
    app: front-end
  name: front-end-nodesvc
spec:
  ports:
  - port: 80
    protocol: TCP
    targetPort: 80
  selector:
    app: front-end
  type: NodePort
status:
  loadBalancer: {}

(修正後)　testNodePort.yaml

apiVersion: v1
kind: Service
metadata:
  labels:
    app: front-end
  name: front-end-nodesvc
spec:
  ports:
  - port: 80
    protocol: TCP
    targetPort: 80
    nodePort: 32000
  selector:
    app: front-end
  type: NodePort

(修正後 複数のポートを指定する場合)　testNodePort.yaml

apiVersion: v1
kind: Service
metadata:
  labels:
    app: front-end
  name: front-end-nodesvc
spec:
  ports:
  - port: 80
    protocol: TCP
    targetPort: 80
    nodePort: 32000
  - port: 443
    protocol: TCP
    targetPort: 443
    nodePort: 30300
  selector:
    app: front-end
  type: NodePort

kubectl apply -f ./testNodePort.yaml
kubectl get svc

# NAME                TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)        AGE
# front-end-nodesvc   NodePort    10.104.26.176    <none>        80:30200/TCP   5s