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.

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

8. OpenFaaS Architecture

9. OpenFaaS Architecture (Contd.)

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

15. Solution Continued …
Customer
Specific
Functions
Events

16. Editing and Deployment

17. OpenFaaS End-users

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

22. https://bit.ly/2GapKWP
Join the community

23. Thank You!
www.openfaas.com @openfaas