Kubernetes is an open-source system for automationg deployment, scaling, and management of containerized applications.

CNCF - cloud Native Computing Foundation

• kubectl
• helm
• docker, docker-compose
• yaml: yet another markup language

Kubernetes Architecture

Deployments -> Pods -> Containers -> docker

1. Container Image - Docker container image, contains your app code in an isolated environment.
2. POD - A set of containers, sharing network namespace and local volumes, co-schedued on 1 machine. Mortal, has POD IP. Has Labels.
3. Deployment - Specify how many replicas of a POD should run in a cluster. Then ensures that many are running across the cluster. Has Labels.

Apache Spark on Kubernetes