Accessing a Host’s Resources through hostPath Volumes

Building docker images

Sooner or later, we’ll have to build our images. A simple solution would be to execute the docker image build command directly from a server. However, that might cause problems. Building images on a single host means that there is uneven resource utilization and that there is a single point of failure. Wouldn’t it be better if we could build images anywhere inside a Kubernetes cluster?

Instead of executing the docker image build command, we could create a Pod based on the docker image. Kubernetes will make sure that the Pod is scheduled somewhere inside the cluster and so distribute resource usage much better.