Kubernetes for Serverless Applications

Pods and services

As already mentioned, Kubernetes does not deploy containers; instead, it launches pods. In its most simple form, a pod can actually be a single container; however, typically a pod is made up of several containers, storage, and networking.

The following is meant to be illustrative and not a practical example; we will be working through a practical example in the next chapter.

Think of a pod as a complete application; for example, if you were running a simple web application it would probably be running a single NGINX container—the pod definition file for this would look something like the following:

apiVersion: v1kind: Podmetadata:  name: nginxspec:  containers:  - name: nginx    image: nginx:latest    ports: - containerPort: 8080 ...