Event Driven Autoscaling with KEDA - 1 Sept 2021 - Microsoft Reactor

Slide deck related to the Microsoft Reactor Benagluru event on September 1 2021.
https://www.meetup.com/en-AU/microsoft-reactor-bengaluru/events/280353882

During the session following topics were covered
- Scaling options in Kubernetes including HPA, Cluster Autoscaler, Manual scaling
- Need for Kubernetes based Event Driven Autoscaling (KEDA)
- Live demos of Producer and Consumer for RabbitMQ queue
- KEDA Architecture
- KEDA scalers and event sources

Transcript

1. Event Driven Autoscaling with KEDA
2. $whoami { “name” : “Nilesh Gule”, “website” : “https://www.HandsOnArchitect.com", “github” : “https://GitHub.com/NileshGule" “twitter” : “@nileshgule”, “linkedin” : “https://www.linkedin.com/in/nileshgule”, “likes” : “Technical Evangelism, Cricket”, “co-organizer” : “Azure Singapore UG” } https://bit.ly/AzureSingaporeSessions
4. AGENDA ▸ Scaling options with Kubernetes ▸ KEDA overview ▸ TechTalks demo with RabbitMQ ▸ Autoscaling with KEDA ▸ KEDA Architecture 4
5. Pre-requisites • Self contained application with all its dependencies Docker • Orchestrates containers • Self healing • Service discovery • Scaling Kubernetes • Dockerhub / private container registry • Repository for storing container images Container Registry • Managed Kubernetes service on Azure • Native integration with other Azure services like Azure Active Directory (AAD), Azure Container registry (ACR), Azure Container Instances (ACI), Azure Monitor etc. Azure Kubernetes Service (AKS)
6. @nileshgule Kubernetes Scaling Options 1 2 3 Horizontal Pod Autoscaler Cluster Autoscaler Manual scaling
8. TechTalks Demo 8
9. @nileshgule TechTalks Producer setup https://github.com/NileshGule/pd-tech-fest-2019  Techtalks producer .Net Core API  2 replicas  Exposed as Kubernetes service using LoadBalancer
10. @nileshgule TechTalks Consumer setup https://github.com/NileshGule/pd-tech-fest-2019  Techtalks consumer .Net Core exe  Not exposed outside Kubernetes cluster  Consumes configured number of messages in a batch
11. @nileshgule RabbitMQ setup https://github.com/NileshGule/pd-tech-fest-2019  RabbitMQ deployed using Helm chart  Exposed as Kubernetes service
12. @nileshgule TechTalks Demo setup 1000 (configurable) messages Batch of 50 (configurable) messages https://github.com/NileshGule/pd-tech-fest-2019
13. @nileshgule TechTalks Demo – Kubernetes deployment https://github.com/NileshGule/pd-tech-fest-2019  Manifest files describe Deployment and Service  Helm charts to deploy third-party apps / services  Octant – visualize k8s cluster  Kubectl to deploy Manifest  Postman to generate workload
14. Autoscaling Demo 15
18. @nileshgule How KEDA works? KEDA moves from the CNCF Sandbox to become an incubating project | Cloud Native Computing Foundation
19. apiVersion: keda.k8s.io/v1alpha1 kind: ScaledObject metadata: name: rabbitmq-consumer-scaled-object namespace: default labels: deploymentName: rabbitmq-consumer-deployment spec: scaleTargetRef: deploymentName: rabbitmq-consumer pollingInterval: 5 # Optional. Default: 30 seconds cooldownPeriod: 30 # Optional. Default: 300 seconds minReplicaCount: 1 # Optional. Default: 0 maxReplicaCount: 30 # Optional. Default: 100 triggers: - type: rabbitmq metadata: queueName: hello queueLength : ‘5’ authenticationRef: name: trigger-auth-rabbitmq-host
20. @nileshgule KEDA ScaledObject https://github.com/NileshGule/pd-tech-fest-2019
22. Azure Blob Storage Azure Event Hub Azure Log Analytics Azure Service Bus Queues and Topics Azure Storage Queues ActiveMQ Artemis Kafka Prometheus RabbitMQ Redis Streams Redis Lists Liiklus NATS Huawei Cloudeye AWS CloudWatch AWS Kinesis Stream AWS Simple Queue Service GCP PubSub Azure functions MySQL PostgreSQL https://keda.sh/docs/2.4/scalers/
23. Summary ▸ Single purpose lightweight component ▸ Any Kubernetes cluster (1.16+) ▸ Extends Kubernetes with event driven capabilities ▸ No overwriting or duplication of existing functionalities ▸ Maps an event source to Deployment, StatefulSet, Custom Resource or Job for scaling ▸ Flexible and safe to run alongside any other Kubernetes framework or application ▸ Support 35+ auto scalers out of the box 25
24. Play with Docker Play with Kubernetes Linux Academy learning paths
25. KEDA AKS cluster-autoscalar Horizontal pod autoscale https://azure.microsoft.com/mediahandler/files/resourcefiles/kubernetes-learning- path/Kubernetes%20Learning%20Path%20version%201.0.pdf
26. Azure Kubernetes Service Workshop References
27. References https://bit.ly/youtube-nileshgule
28. https://github.com/NileshGule/pd-tech-fest-2019 reactor-demo-september-1-2021.md
29. Thank you very much Code with Passion and Strive for Excellence https://www.slideshare.net/nileshgule/presentations https://speakerdeck.com/nileshgule/
30. Nilesh Gule ARCHITECT | MICROSOFT MVP “Code with Passion and Strive for Excellence” nileshgule @nileshgule Nilesh Gule NileshGule www.handsonarchitect.com https://bit.ly/youtube-nileshgule
31. Q&A