KNative

What is KNative and how does it work?

Slide 2:
- Serverless does not mean without servers
- Server are completely abstracted
- Developers / Operators don’t have to think about resources (e.g. CPU and Memory)
- Scaled by Requests / Don’t pay for idling
- Your Code is the only artifact (Bring your own code)

Slide 3:
- Implementation to enable you to run serverless workloads on your cluster
- KNative is a framework that provides Custom Resource Definitions for Kubernetes

Slide 4:
- Serving
- CRDs for managing scale-to-zero deployments and routing to these application on top Istio
- These include a new Service definition that manages the deployment and the routing
- For every deployment a revision is created so you can jump back to an older state of your code in case you app is misbehaving
- Build
- Plugin-Framework to enable source-to-url workflows
- KNative Build is actually just able to run build in the cluster
- It’s up to you (or some 3rd Party) to provide mechanism for fetching code, creating and pushing images
- currently there are plugins to fetch from a git repository and to actually build using either buildpacks, jib or kaniko (build the Dockerfile in the repository root)
- Eventing
- plugin framework to react to specific events from different systems or to communicate to these systems
- Current implementations include a Kubernetes Source, a GithubSource and a GCP Pub/Sub Source

Transcript

1. KNative Serverless on Kubernetes Waldemar Biller, December 4th, 2018
3. Building Blocks that Simplify How You Deploy and Run Functions atop Kubernetes and Istio. On Any Cloud.
4. Serving Build Eventing
5. Demo
6. Resources https://github.com/knative/docs https://projectriff.io/ https://gitlab.com/wbiller/knative-demo https://gitlab.com/wbiller/helloworld-express https://kubeless.io/ https://www.openfaas.com/