CRD's and The Operator Pattern

CRD's and The Operator Pattern

• You can add 3rd-party Resources and Controllers

• This extends Kubernetes API and CLI

• A pattern is starting to emerge of using these together

• Operator: automate deployment and management of complex apps, e.g. Databases, monitoring tools, backups, and custom ingresses

Higher Deployment Abstractions

• All out kubectl commands just talk to the Kubernetes API

• Kubernetes has limited built-in templating, versioning, tracking and management of your apps

• There are now many tools to do that, but many are defunct

• Helm is the most popular

• 'Compose on Kubernetes' comes with Docker Desktop

• These are optional, and your distro may have a preference

• Most distros support Helm

• Many of the deployment tools have templating options

• You'll need a solution as a number of environments / apps grow

• Helm was the first 'winner' in this space, but can be complex

• Official 'Kustomize' (https://github.com/kubernetes-sigs/kustomize) feature works out-of-the-box

• docker app and Compose-on-Kubernetes are Docker's way