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Global Azure Virtual - Application Autoscaling with KEDA
This document discusses Kubernetes Event-driven Autoscaling (KEDA), which allows applications running on Kubernetes to automatically scale based on external events. KEDA manages workloads to provide autoscaling to zero, registers as a custom metrics adapter, and provides metrics for the Horizontal Pod Autoscaler to use for scaling. It supports a variety of event sources and scalers out of the box. KEDA is cloud-agnostic, vendor-neutral, and easy to install via Helm charts or the Operator Framework. It has over 1,800 stars on GitHub and an active community. The document demonstrates how KEDA works and discusses its roadmap and integration with technologies like Knative and Azure Functions.
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Global Azure Virtual - Application Autoscaling with KEDA
- 1. Application Autoscaling MadeEasy with Kubernetes Event-Driven Autoscaling (KEDA) Tom Kerkhove, Codit, Azure Architect and Microsoft MVP 1
- 2. Azure Architect Microsoft AzureMVP & Advisor Writes on blog.tomkerkhove.be Maintainer of Promitor, KEDA & Arcus Hi, I’m Tom Kerkhove 2 @TomKerkhove tomkerkhove
- 3. Agenda | Serverless andKubernetes | Application autoscaling made simple with KEDA | How does it work? | Roadmap | Q&A 3
- 4. Serverless and Kubernetes USE‘SERVERLESS’ ON- PREMISES LEVERAGING EXISTING KUBERNETES INVESTMENTS CUSTOM COMPUTE, SECURITY, OR NETWORK REQUIREMENTS NO VENDOR LOCK-IN
- 5. 5 So, how doyou scale on Kubernetes?
- 6. 6 6 Node 1 Cluster Node 2Node 3 Pod Pod Pod Pod Pod Pod Pod Pod Pod Pod Pod Pod Pod Pod Pod Custom Metric Provider Horizontal Pod Autoscaler(s) Cluster Autoscaler
- 7. Autoscaling based onexternal sources 7
- 8. Application autoscaling madesimple with Kubernetes Event-driven Autoscaling ( ) 8 | Automatically scale Deployments & Jobs | Vendor-Agnostic & Built-in Scalers | Production-grade Authentication | Save resources with scale to 0 | Run Azure Functions anywhere (simple & durable) | Started as a partnership between Microsoft & Red Hat | Focus on your app scaling, not the scaling internals
- 9. 9 KEDA is cloud-agnostic& vendor-neutral KEDA is cloud-agnostic & vendor-neutral
- 10. Demo Autoscaling .NET Coreworker based on Azure Service Bus queue depth 10
- 11. How does itwork? 11 | KEDA is built on top of Kubernetes | Manages workloads to provide scale to 0 | Registers itself as a metric adapter | Provides metrics for HPA to scale on | Out-of-the-box & add-on scalers | Easy to install | With Helm | https://hub.helm.sh/charts/kedacore/keda | With Operator Framework | https://operatorhub.io/operator/keda
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- 14. 14 14 Node 1 Node2 Node 3 Pod Pod Pod Pod Pod Pod Pod Pod Pod Pod Pod Pod Cluster Autoscaler Custom Metric Provider Horizontal Pod Autoscaler(s) Cluster
- 15. Kubernetes Cluster KEDA OperatorMetrics API HPA Scalers
- 16. Kubernetes Cluster Event Source KEDAOperator Metrics API HPA Scalers
- 17. Kubernetes Cluster KEDA OperatorMetrics API HPA Scalers Deployment ScaledObject.yaml Event Source
- 18. Kubernetes Cluster KEDA OperatorMetrics API HPA Scalers Deployment ScaledObject.yaml Event Source
- 19. Kubernetes Cluster KEDA OperatorMetrics API HPA Scalers Event Source Deployment ScaledObject.yaml
- 20. Kubernetes Cluster KEDA OperatorMetrics API HPA Scalers Event Source Deployment ScaledObject.yaml How many events are being generated?
- 21. Kubernetes Cluster KEDA OperatorMetrics API HPA Scalers Event Source Deployment ScaledObject.yaml How many events are being generated?
- 22. Kubernetes Cluster KEDA OperatorMetrics API Deployment HPA Deployment Scalers Event Source Deployment ScaledObject.yaml How many events are being generated?
- 23. Community 23 | 1.8k starson GitHub | 50 contributors, incl. | Microsoft | Red Hat | IBM | Codit | BUPA | Astronomer.io | Bi-weekly community standups | https://keda.sh
- 24.
- 25. Benefits of usingAzure Functions with KEDA 25 | Brings an event driven *programming model* to KEDA event driven scale | Same productive developer tooling and experience | Any function app can be put in a container and scaled with KEDA | Azure Functions is already open sourced – but are doing more and considering branding to make that more apparent
- 26. Roadmap 26 | Seamless integrationwith Knative & support for HTTP workloads | Introduce new scalers | Service Mesh Interface (SMI) | Azure IoT Hub | What do you need?
- 27.