Sample cloud-native application with microservices

Re:Sample cloud-native application with microservices by lazyant on Thursday February 14, 2019 @09:25PM (#19167992)

Why both a ClusterIP and a LoadBalancer services to expose frontend 8080 as 80?

Also, no persistent data storage (no data to the store owner)? (I guess for easier example)

[ Parent | on HN ]

Re:Sample cloud-native application with microservices by kumaraman on Thursday February 14, 2019 @10:02PM (#19168139)

The ClusterIP and LoadBalancer are on separate network interfaces. The ClusterIP exposes the service on an internal interface whereas, the LoadBalancer exposes on a public interface.

https://kubernetes.io/docs/concepts/services-networking/serv...

[ Parent | on HN ]

Re:Sample cloud-native application with microservices by alpb on Friday February 15, 2019 @11:35AM (#19172224)

Hi, the author here! The clusterip one is used by Istio (if you’re following the Istio instructions) but it’s harmless to have an internal LB. The other one is exposing an external LB, which is useful both if you’re using GKE (or any cloud provider) or GKE+Istio.

We deliberately wanted to leave state out as it complicates things by quite a bit, but doesn’t add much value in terms of the technologies we wanted to showcase.

[ Parent | on HN ]

Re:Sample cloud-native application with microservices by jjeaff on Thursday February 14, 2019 @10:35PM (#19168262)

ClusterIP would be to access the frontend from within the cluster. LoadBalancer would of course be for external access.

[ Parent | on HN ]