Serverless on OpenShift - Developer Experience Office Hours

What new in OpenShift 4.7 with Serverless
Release notes: https://docs.openshift.com/container-platform/4.7/serverless/serverless-release-notes.html

What’s in pipeline for OpenShift upcoming release

Transcript

1. OpenShift Developer Experience Office Hours March 2, 2021 Serverless on OpenShift
2. CONFIDENTIAL Designator What’s we are going to talk about? 2 What new in OpenShift 4.7 with Serverless What’s in pipeline for OpenShift upcoming release
3. CONFIDENTIAL Designator Serverless 3 “Serverless computing refers to the concept of building and running applications that do not require server management. It describes a finer-grained deployment model where applications, bundled as one or more functions are uploaded to a platform and then executed, scaled, and billed in response to the exact demand needed at the moment” -- CNCF Definition, https://www.cncf.io/blog/2018/02/14/cncf-takes-first-step-towards-serverless-computing/ Serverless
4. Kubernetes-based platform to deploy and manage modern serverless workloads. Knative 4 https://knative.dev
5. 5 Serving A request-driven model that serves the container with your application and can "scale to zero". Eventing Common infrastructure for consuming and producing events that will stimulate applications. Knative Serverless Components
6. New features added in 4.7 Serverless 6 • Ability to list/create serving and eventing resources from Admin Perspective
7. New features added in 4.7 Serverless 7 • Event Source Catalog: EventSources are part of catalog now to improve scalability for better user experience • Camel Connector: Added support for kamelets (Camel Connector) as part of EventSource catalog
8. New features added in 4.7 Serverless 8 • Event Sources Catalog
9. New features added in 4.7 Serverless 9 • Channels and Subscriptions
10. Source → Service : Channel & Subscription Serverless 10 • Multiple Services can consume the same event • Subscription can point to a reply channel (not shown here) • Various Channel Backends available ◦ In-Memory, Kafka, GCP PubSub, (write your own) • Drawbacks: ◦ No filtering, Service gets always all events Source Sink Sink Subscription Subscription Source Channel
11. New features added in 4.7 Serverless 11 • Brokers and Triggers
12. 12 Serverless Source → Service: Broker & Trigger Broker • Eventing Mesh for distributing Events • Addressed by sources as sink Broker Source Source Sink Sink Trigger filter = Trigger filter = Trigger • Filter on CloudEvent attributes (e.g. type) • Connects a Sink with Broker
13. Upcoming features Serverless 13 • Visualize Serverless functions
14. Upcoming features Serverless 14 • Advance Scaling options for knative Service
15. Upcoming features Serverless 15 • Migrate existing workloads to serverless (knative service) with a click
16. From Deployment to KService Serverless 16 apiVersion: apps/v1 kind: Deployment metadata: name: random spec: replicas: 1 selector: matchLabels: app: random template: metadata: labels: app: random spec: containers: - image: rhuss/random name: random ports: - containerPort: 8080 apiVersion: serving.knative.dev/v1 kind: Service metadata: name: random spec: replicas: 1 selector: matchLabels: app: random template: metadata: labels: app: random spec: containers: - image: rhuss/random name: random ports: - containerPort: 8080 No more K8s Service or Ingress/Route required !
17. Demo Serverless 17
18. 18 http://dn.dev/knative-cookbook
19. https://k8spatterns.io https://twitter.com/ro14nd https://twitter.com/k8spatterns https://twitter.com/mwessendorf Thank you 19