external service

• biasanya service digunakan sebagai gateway untuk internal pod
  • tapi service juga bisa digunakan sebagai gateway untuk aplikasi external yang berada di luar kubernetes cluster
• type:
  • ClusterIP (default)
  • ExternalName (external service)
  • NodePort
  • LoadBalancer

configuration

• service-with-endpoint ```yaml apiVersion: v1 kind: Service metadata: name: external-service labels: label-key1: label-value1 spec: ports: - port: 80

---

apiVersion: v1 kind: Endpoints metadata: name: external-service labels: label-key1: label-value1 subsets: - addresses: - ip: 11.11.11.11 - ip: 22.22.22.22 ports: - port: 80

- service-with-domain
  ```yaml
  apiVersion: v1
  kind: Service
  metadata:
    name: external-service
    labels:
      label-key1: label-value1
  spec:
    type: ExternalName
    externalName: example.com
    ports:
      - port: 80

• example ```yaml apiVersion: v1 kind: Service metadata: name: example-service labels: name: example-service spec: type: ExternalName externalName: example.com ports: - port: 80

---

apiVersion: v1 kind: Pod metadata: name: curl labels: name: curl spec: containers: - name: curl image: khannedy/nginx-curl

## command
```sh
curl example-service.default.svc.cluster.local