Summary

In this last chapter, we have explained advanced traffic routing approaches in Kubernetes using Ingress objects and Ingress Controllers. At the beginning, we did a brief recap of Kubernetes Service types. We refreshed our knowledge regarding ClusterIP, NodePort, and LoadBalancer Service objects. Based on that, we introduced Ingress objects and Ingress Controllers and explained how they fit into the landscape of traffic routing in Kubernetes. Now, you know that simple Services are commonly used when L4 load balancing is required, but if you have HTTP or HTTPS endpoints in your applications, it is better to use L7 load balancing offered by Ingress and Ingress Controllers. You learned how to deploy the nginx web server as an Ingress Controller and we tested this on example Deployments.

Lastly, we explained how you can approach Ingress and Ingress Controllers in cloud environments where you have native support for L7 load balancing outside of the Kubernetes cluster. As a...