Kubernetes primitives

You have learned that Kubernetes is an orchestration system used to deploy and manage containers. Kubernetes defines a set of building blocks, which are also known as primitives. These primitives together can help us to deploy, maintain, and scale containerized applications. Let's take a look at each of the primitives and understand their roles.

Pod

Pods are the most basic unit of Deployment in Kubernetes. The immediate question that arises to a curious mind is how is a Pod different to a container? Pods are wrappers on top of containers. In other words, containers are contained within Pods. There can be multiple containers within a Pod; however, best practice is to have a one-Pod-one-container relationship. This does not mean we cannot have more than one container in a Pod. Multiple containers in a Pod is also fine, as long as there is one main container and the rest are ancillary containers. There are also patterns, such as sidecar patterns, that...