Intro to Kubernetes and Docker

Overview

Teaching: min
Exercises: min

Questions

Objectives

Requirements

This section will contain some hands-on activities that will require that you have completed the Setup page.

Docker and Kubernetes?

Docker is a platform for building, packaging, and running applications in containers.

• Containers are lightweight, portable, and consistent environments.
• They include everything your app needs: code, libraries, and dependencies.
• Docker makes it easy to run the same app on your laptop, a server, or in the cloud.

Why Docker matters for Kubernetes:

• Kubernetes doesn’t build containers, it runs them.
• Docker (or other container runtimes) provides the container images that Kubernetes manages.
• Pod → The smallest deployable unit in Kubernetes, which wraps one or more containers.

Docker Registry

• A repository for storing and sharing Docker images.
• Public example: Docker Hub (hub.docker.com)
• Private registries are possible for internal use.
• NRP’s GitLab: provides public/private registry based on repo’s settings. (If you have a local docker image, can push to gitlab, or build in gitlab)

Where should I ask for help?

The primary option for support is via our Matrix chat.