Introduction to OpenFaas
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This document introduces serverless computing and OpenFaaS. It discusses what serverless means, provides an overview of OpenFaaS including its architecture and use cases. It also demonstrates how to write and deploy functions with OpenFaaS and lists some other related projects.
Introduction to OpenFaas
- 1. Introduction to Serverless and OpenFaaS Vivek Singh, OpenFaaS Member & SSE@ Akamai Cloud Native Meetup
- 2. Agenda ⚡ • What is serverless ? • OpenFaaS • Use case • Other cool projects • Live Demo Tweet @openfaas 🤳 📸
- 3. Serverless is an architectural pattern
- 4. What is Serverless anyway? Monolith MicroserviceMicroservice Decreasing concern for infrastructure Function MicroserviceMicroservice
- 5. Short-lived Single-purpose No state Auto-scaling What are functions? Function
- 6. • Started in Nov 2016 • Containers, Alexa, Swarm 🐳 • Production users 💻 • Bossie awards 🥇🥈 • 22.7k stars / 270+ contributors Meet OpenFaaS
- 7. Architecture: Kubernetes-native API Gateway OpenFaaS Operator Pod: Func 2 NATSPrometheus Ingress/LB CRD Pod: Func 1 CRD
- 10. def handler(req): r = requests.get(req) return str(r.status_code) handler.py requirements.txt requests $ faas new --lang python3 http-status Python Template Docker Image $ faas up1. 2. Handler Registry + Write a function
- 11. Stack files (YAML) functions: move-money: lang: go handler: ./move-money image:move-money:0.1 environment: content_type: "application/json" secrets: - bank-api-key register-user: lang: go handler: ./register-user image: register-user:0.2 environment: http_proxy: http://corp.ad.com:3128
- 12. Problem Statement COMPANY PROVIDES API’S AND WANTS TO ENABLE IT’S CUSTOMERS TO EXTEND THOSE API’S AND RUN EXTENDED LOGIC ON IT’S PLATFORM • Too many unique feature requests • Crunch of resources • Other priorities
- 13. Use case: Liveperson PLATFORM TO BUILD CONVERSATIONAL AI BASED BOTS FOR COMMERCE • Too many feature requests • Unique requests • High Time-To-Market • Resource crunch Liveperson Kubecon Talk
- 14. Solution
- 18. arkade KUBERNETES APPS FOR DEVELOPERS • A simple CLI tool • Installs kubernetes applications • Install CLI tools https://github.com/alexellis/arkade
- 19. inlets CLOUD NATIVE TUNNEL FOR APIS • Expose internal or local endpoints to public internet • Kubernetes Operator https://github.com/inlets/inlets
- 20. k3sup BOOTSTRAP KUBERNETES WITH K3S OVER SSH < 1 MIN • Lightweight CLI tool • From Zero to KUBECONFIG with k3s • Local or remote VM over SSH https://github.com/alexellis/k3sup
- 21. Connect & Learn ⛵ • Join Slack • Try the OpenFaaS Cloud • Follow @openfaas on Twitter