【VMware Cloud Director】CSE環境の動作確認①service,pod

VCD

動作確認として、取得したkubeconfigを利用して接続した環境に対して、podを作成し外部から接続

※テスト環境用namespace作成

[root@localhost .kube]# kubectl create namespace ns01
namespace/ns01 created

※pod(nginx)作成
[root@localhost .kube]# kubectl -n ns01 run nginx --image=nginx
pod/nginx created

※podが作成され、稼働していることを確認
[root@localhost .kube]# kubectl -n ns01 get pod -o wide --show-labels
NAME    READY   STATUS    RESTARTS   AGE    IP            NODE                                              NOMINATED NODE   READINESS GATES   LABELS
nginx   1/1     Running   0          110s   100.96.1.16   tkg01-worker-node-pool-1-6cd5656db6xb5xb9-zhc8v   <none>           <none>            run=nginx

※service作成
[root@localhost .kube]# kubectl -n ns01 create service loadbalancer ng-lb --tcp=80 --dry-run -o yaml

出力結果のうちselector箇所をpodのラベルと同一に修正した内容にてファイル(lb.yml)作成
[root@localhost .kube]# kubectl apply -f lb.yml
service/ng-lb created

※service確認
[root@localhost .kube]# kubectl -n ns01 get service
NAME    TYPE           CLUSTER-IP     EXTERNAL-IP   PORT(S)        AGE
ng-lb   LoadBalancer   100.67.88.27   10.1.0.123    80:30303/TCP   31s

※EXTERNAL-IPへ接続確認
[root@localhost .kube]# curl http://10.1.0.123
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>

<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>

<p><em>Thank you for using nginx.</em></p>
</body>
</html>

ファイル内容

[root@localhost .kube]# cat lb.yml
apiVersion: v1
kind: Service
metadata:
  creationTimestamp: null
  labels:
    app: ng-lb
  name: ng-lb
  namespace: ns01
spec:
  ports:
  - name: "80"
    port: 80
    protocol: TCP
    targetPort: 80
  selector:
    run: nginx ←ここだけ変更
  type: LoadBalancer
status:
  loadBalancer: {}