Cloud agnostic serverless with fn project
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The document discusses Fn Project, an open-source serverless platform that is cloud agnostic and can run functions on-premises. It supports various languages for developing functions and containers are used to deploy and run functions. The Fn CLI and Fn Server are used to develop, deploy, and invoke functions. Fn Flow allows building scalable applications from functions through complex and parallel processes.
Cloud agnostic serverless with fn project
- 1. Cloud Agnostic Serverless with Fn Project Todor Todorov | DevOps Evangelist | @totollygeek |
- 2. Todor Todorov @totollygeek » .NET developer; » clean code fanatic; » DevOps evangelist; » speaker; » father of 3 boys; » karaoke enthusiast; @totollygeek
- 3. The serverless explained Credits: Matthew Gilliard DIY Bare Metal PaaS K8s-aaS Serverless Hardware OS Hypervisor Virtual OS Container Orchestration Application Code @totollygeek
- 7. @totollygeek
- 8. ❑ C# ❑ F# ❑ JavaScript ❑ Java (ver 2.x only) ❑ PowerShell (ver 2.x only) ❑ Python (ver 2.x only) ❑ TypeScript (ver 2.x only) ❑ some experimental @totollygeek
- 9. ❑ JavaScript ❑ Python ❑ Java (8, 11) ❑ C# (dotnetcore2.1) ❑ Go (1.x) ❑ Ruby (2.5) @totollygeek
- 12. @totollygeek
- 13. @totollygeek
- 14. @totollygeek What is Fn Project? • Independent open-source serverless compute platform • Not tied to any cloud vendor • Can be run on premises • Supported by Oracle • Containers are primitives • Strong enterprise in mind
- 15. What is a function container? • Sandboxed process • Short running • Event-driven • Stateless (-ish) @totollygeek
- 16. Anatomy of an Fn function • Small chunk of code wrapped in a container • Gets input from http-stream and environment • Sends output to http-stream • Logs to STDERR / syslog @totollygeek
- 17. FDK (Function Development Kit) support Go Java Node.js Python Ruby Officially supported C# Community supported @totollygeek
- 18. The Fn Server • Runs in a container also • Handles as an API gateway • Exposes REST interface • Storing logs @totollygeek
- 19. The Fn CLI • Of course we have a CLI! • Used to interact with Fn Server • Initialization • Deployment • Invocation @totollygeek
- 20. Initialization of functions • Calling fn init to create a boilerplate in a folder • Does not do anything on the server • Boilerplate includes: Dockerfile, func.yaml & code @totollygeek
- 21. @totollygeek How deployment works 1. Bumps function version 2.Builds container 3.Pushes it to registry 4.Creates or update function & trigger in server Your code MyFunc:0.0.2 1 & 2 3 MyFunc:0.0.2 MyFunc:0.0.2 Fn Service 4
- 22. Invocation of functions • From the CLI • With HTTP request • From the UI @totollygeek
- 24. @totollygeek See metrics with Grafana & Prometheus Source: https://fnproject.io/tutorials/grafana/
- 26. Using it in Kubernetes • Recommended way of deployment for production • Helm chart available on GitHub @totollygeek
- 27. Fn Flow • Building scalable distributed applications out of functions • Flows are functions also • Support complex parallel processes with error handling, which is testable • Flow functions scale as normal functions • Currently supports Java, hopefully more to come @totollygeek
- 28. @totollygeek Fn Flow | Licence plate example Scraper Plate detect Plate detect Plate detect Draw Draw Draw Post to Twitter Post to Twitter Post to Twitter Post to Slack Post to Slack Post to Slack
- 29. @totollygeek Fn Flow | Licence plate example Scraper Plate detect Plate detect Plate detect Draw Draw Draw Post to Twitter Post to Twitter Post to Twitter Post to Slack Post to Slack Post to Slack FlowFuture.invoke() thenCompose() thenCompose() allOf() whenComplete()
- 30. @totollygeek Fn Flow | Licence plate example
- 31. Fn Flow UI Source: https://github.com/fnproject/flow @totollygeek
- 33. Thank you! Where to find me: e: todor@todorov.bg b: www.todorov.bg t: www.twitter.com/totollygeek l: www.linkedin.com/in/totollygeek g: www.github.com/totollygeek Next event: Kubernetes integration with Vault @totollygeek