Discussing 3 main PLONK stack projects and how NATS integrates with Serverless

1. Serverless for Kubernetes
PLONK with NATS and OpenFaaS
Alex Ellis (@alexellisuk)
CNCF Ambassador & Founder @ OpenFaaS Ltd

2. Agenda ⚡
• PLONK
• OpenFaaS
• NATS
• Queue system
• Event Connector
• Future work
@openfaas / @alexellisuk

3. Serverless & FaaS
• Focus on code
• Smaller
• Event-driven
• Easy to manage:
• Stateless
• Isomorphic

4. Serverless 1.0 (Cloud Functions/FaaS)

5. Serverless 2.0

6. OpenFaaS - Simple, Secure, Serverless
• Founded in 2016 to “make
Serverless portable” 🎂
• Three values:
• Developer-focused
• Easy to operate
• Community-centric
> 21k stars
> 250 contributors
> 2.5k Slack

7. 🤓
“But, I have a CKA/D, so why should I care?”

8. • A Node.js microservice for
Kubernetes
Adding a new service (the hard way)
Did we miss anything?

9. OpenFaaS: template system
handler.jsstack.yml
• Memory / CPU limits
• Labels / Annotations
• Environment variables
• Secrets

11. Slide Title
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12. PLONK Stack
• Prometheus*
• Linux/Linkerd*
• OpenFaaS
• NATS*
• Kubernetes*
* = CNCF project

13. Install PLONK stack
curl https://dl.get-arkade.dev | sh
arkade install openfaas
ark
ade

14. Install PLONK stack with TLS
arkade install openfaas
arkade install cert-manager
arkade install nginx-ingress
arkade install openfaas-ingress
--email web@example.com
--domain faas.example.com
ark
ade
https://faas.example.com/

15. Synchronous function

16. Asynchronous with NATS

17. Events & triggers
https://docs.openfaas.com/reference/triggers/

18. Event-driven with NATS
https://github.com/openfaas-incubator/nats-connector

19. Future work with NATS
• "arkade install nats-connector"
• Queue-worker
• Multiple concurrent queues
• Observability
• JetStream
• Queue-worker
• Event connector

20. Connect & Learn 👋
https://github.com/openfaas/workshop
https://store.openfaas.com
10% off with “stay-at-home”

21. Thank You!
@alexellisuk / @openfaas