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ATO 2018 - What is Serverless Useful For?
- 1. WHAT IS SERVERLESS USEFULFOR? BUILDING A MULTI-CLOUD AUTOMATION WITH DISPATCH Karol Stepniewski & Berndt Jung Cloud Native Apps @VMware
- 2. Agenda 2 Serverless, FaaS, Functions,and Use cases What is Dispatch? Demo Wrapping up & next steps Q & A
- 3. 3 How Did WeGet Here? Increasingfocusonbusinesslogic Decreasing concern (and control) over infrastructure implementation Virtual machines Functions Containers Bare Metal Justwritecodethatmatters
- 4. 4 What is aFunction? Auto-scaled Lower Cost Event Driven Stateless Finite Lifespan
- 5. 5 Use Cases • RESTfulservices • Stateless apps • Bursting workloads • Parallel processing • Edge computing • Mobile app backends • Log analysis • Job queues • ETL • Machine Learning • CI/CD pipelines • Notifications • Chat Ops • Periodic jobs • Monitoring and alerting • Provisioning • Automation ƒ(x) Micro-services IoT Stream-processing DevOps IT Operations
- 6. 6 Events in thePublic Cloud Or Serverless the easy way Eco-system of Services Connected via a common event bus Events and triggers integrated into platform But what if you’re not just in one cloud? What about on-premise event producers and consumers?
- 7. 7 Serverless is... • Functions •PaaS/CaaS • Managed Services – Databases – Queues – Object Store • API Gateways • Etc. But does everything have to be within a single cloud? Serverless is More Than Just Functions
- 8. 8 CloudEvents - Cloud Eventsis now a CNCF sandbox project - Released 0.1 specification - Showed multi-vendor interoperability demo at kubecon in Copenhagen Tech community
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- 10. 10 What is Dispatch? EnterpriseFunctions Stack Cloud events native Integrate almost any IDP Production-ready API-gateway
- 11. 11 Under Construction Dispatch 0.1.x •Loosely Kubernetes Based • Support multiple FaaS backends Dispatch Solo • Single Binary • Single Dependency (Docker) Dispatch Knative • Based on Knative building blocks • Tightly coupled to Kubernetes
- 12. 12 Open sourced byGoogle with partners (Pivotal, IBM, RedHat, etc) Serverless building blocks for Kubernetes • Build – Pluggable framework for building container images on Kubernetes from source • Serving – Auto-scaling containers from 0 (not just functions) – Istio based routing with support for traffic splitting and canary deployments • Eventing – Manage event sources and subscriptions – Pluggable bus (Kafka, GCP pub/sub) – CloudEvents based What is Knative?
- 13. 13 Dispatch Architecture Customers Administrators Developers External Events Inbound data Dispatchcomponent Knative component Image Registry (Harbor) IDP/AD Kubernetes (PKS) Knative Eventing API Gateway (Istio)IAM Knative Serving Service Catalog External OSB Services Dispatch API Dispatch Operators Knative Building Dispatch dependency
- 14. 14 Demo Chat-ops with Dispatchand Slack 1 API-Gateway: POST /cloudmaster Execute: cloudmaster.py Create/List/Delete VM Event-Driver: Listen for events Execute: status.py 2 3 5 4
- 15. 15 What's Next forDispatch?
- 16. 16 Low barrier toentry • Shipped as single binary or VM appliance • Only dependency is Docker API compatible with Dispatch Knative* • Shared UI/CLI • Same functions and images Lightweight Explore Dispatch and Functions use-cases • It ran the demo! Dispatch Solo
- 17. 17 Long-term bet onKnative • VMware contributing directly to upstream Knative project • Knative is still evolving significantly Currently supported features • Image management • Function creation and execution • API gateway* Dispatch Knative
- 18. 18 Want to getinvolved? • vmwarecode.slack.com #dispatch Tell us your use-cases Become a committer • https://github.com/vmware/dispatch Wrapping Up
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