This document discusses how Kubernetes can be used as a platform for serverless applications. It introduces the Kubeless, Funktion, and Fission projects, which allow running serverless functions on Kubernetes. Kubeless extends the Kubernetes API to deploy and manage functions as third-party resources. Funktion uses Kubernetes primitives like deployments and config maps to run functions as containers with a flow-based programming model. Fission launches function containers in response to events using a pool manager. Kubernetes is a good fit for serverless as it provides infrastructure without needing to rebuild components.

1. Serverless with Kubernetes
Malepati Bala Siva Sai Akhil
Huawei

2.  What is Serverless?
 What is Kubernetes?
 How Kubernetes fits with Serverless?
 Kubeless
 Funktion
 Fission
 Broad Comparison
 Conclusion
Contents

4. General Serverless Architecture

5. Kubernetes Architecture

6. Services and Rolling Updates

7. Config Maps and Secrets

8.  Everything Remote API Driven
 Deployments
 Secrets and Config Maps
 …
 Reuse the whole Kubernetes (Almost )
 Main Focus is on Application Code
How Kubernetes fits in Serverless?

9.  Developed by Skipbox (Recently bought by Bitnami)
 Kubernetes-native Serverless Framework
 Uses many Kubernetes primitives like Deployments,
Services, ConfigMaps, etc.
 Has a mobile app named “Cabin” (IOS and Android)

10.  Extends Kubernetes API using 3rd Party Resource
Function
 Uses Kubernetes Deployment for running a Controller
for watching Function endpoints and launching runtimes
containing Function Code
 Functions are injected into default runtimes using
Config Maps
 The runtimes are pre-built Docker images that wrap the
functions in an HTTP server
Kubeless Architecture

11. funktion
 By Fabric 8
 Event Driven (Flow Based)
 Supports over 200 of different event sources and
connectors (Apache Camel Connectors)

12. funktion
 Funktion
 Flow
 Connector

13.  By Platform 9 Systems
 Pooling Concept
 Provides a way to watch for Kubernetes Events

14. Fission Architecture

15. Fission Use Cases

16. Fission Use Cases

17. Fission Pool Manager

18. Fission Pool Manager

19.  Kubeless uses 3rd Party Resource of Kubernetes
 Funktion gives a lot of connectors and provides a flow
language for multi level connectors
 Fission supports pooling which optimizes the start time
Broad Comparison

20.  Kubernetes fits in well for Serverless
 No need of reinventing the wheel
 Less maintenance of the code for Serverless
 As kubernetes improves these serverless platforms improve
inherently 
Conclusion

21.  kubernetes.io
 kubeless.io
 funktion.fabric8.io
 fission.io
References