Kubernetes Serverless Frameworks

by Adrian Kosmaczewski

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KUBERNETES KUBERNETES SERVERLESS SERVERLESS FRAMEWORKS FRAMEWORKS Adrian Kosmaczewski

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"Serverless" "FaaS"

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Martin Fowler — martinfowler.com/articles/serverless.html FaaS is about running backend code without managing your own server systems or your own long-lived server applications.

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HOW DOES IT WORK? HOW DOES IT WORK?

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Bernd Erk @gethash How #serverless actually works. #devopsdays 236 1:35 PM - Oct 29, 2019 94 people are talking about this

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AGENDA AGENDA 1. OpenFaaS 2. Fn Project 3. Fission 4. OpenWhisk 5. Kubeless 6. TriggerMesh

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AGENDA AGENDA 1. Project details 2. Demos (three, on minikube) 3. Available triggers 4. Supported programming languages

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1. OPENFAAS 1. OPENFAAS

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OPENFAAS OPENFAAS Written in Go ~16000 stars ~120 contributors Latest version 0.18.2 (October 15th, 2019) Independent project through donations (Patreon, OpenCollective, PayPal) www.openfaas.com @openfaas github.com/openfaas/faas

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OPENFAAS CHARACTERISTICS OPENFAAS CHARACTERISTICS Based on Docker Functions packaged in containers Requires Docker in the local machine Manages Docker les on behalf of developer Template "store" CLI: faas-cli API with Swagger Serverless Framework plugin

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1 provider: 2 name: openfaas 3 gateway: http://192.168.99.100:31112 4 functions: 5 hello: 6 lang: python3 7 handler: ./hello 8 image: hello:latest - 149 UU-: hello.yml

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OPENFAAS TRIGGERS OPENFAAS TRIGGERS HTTP Event Connectors: Kafka, Amazon SNS, Minio, CloudEvents, IFTTT, Redis, RabbitMQ…

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OPENFAAS LANGUAGES OPENFAAS LANGUAGES C#, F== (.NET Core) Go JavaScript (Node.js) Java (JVM) 8 & 12 PHP 7 Python / Python 3 Ruby github.com/openfaas/templates

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2. FN PROJECT 2. FN PROJECT

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FN PROJECT FN PROJECT Written in Go ~4300 stars ~80 contributors Latest version 0.3.739 (October 18th, 2019) Funded by Oracle (Oracle Functions is a fork) fnproject.io @fnproject github.com/fnproject/fn

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FN PROJECT FN PROJECT CHARACTERISTICS CHARACTERISTICS

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FN PROJECT TRIGGERS FN PROJECT TRIGGERS HTTP

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FN PROJECT LANGUAGES FN PROJECT LANGUAGES Go JavaScript (Node.js) Java (JVM) Python Ruby C== (community supported) "Supports all languages"

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3. FISSION 3. FISSION

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FISSION FISSION Written in Go ~4700 stars ~90 contributors Latest version 1.6.0 (October 10th, 2019) Maintained by ssion.io @ ssionio github.com/ ssion/ ssion Platform9

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FISSION CHARACTERISTICS FISSION CHARACTERISTICS Functions are injected into "Environments" Pool of containers with language runtimes Functions loaded and launched on demand CLI: fission Serverless Framework plugin

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asciinema $ cat samples/fission.js module.exports = async function(context) { return { status: 200, body: "Hello VSHN from Fission!\n" }; } asciinema $ fission env create --name nodejs --image fission/node-env environment 'nodejs' created asciinema $ fission function create --name vshn --env nodejs --code samples/fission.js Package 'fission-js-i0nl' created function 'vshn' created asciinema $ fission function test 00:00

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FISSION TRIGGERS FISSION TRIGGERS HTTP Time Message Queue Kubernetes Watch

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FISSION LANGUAGES FISSION LANGUAGES Go Python JavaScript (Node.js) Java (JVM)

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4. OPENWHISK 4. OPENWHISK

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OPENWHISK OPENWHISK Written in Scala ~4300 stars ~160 contributors Latest version 0.9.0 (October 31st, 2018) Started by IBM, maintained by the Apache Foundation openwhisk.apache.org @openwhisk github.com/apache/openwhisk

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OPENWHISK OPENWHISK CHARACTERISTICS CHARACTERISTICS Very "corporate" in design and functionality Secure by default Forked by Adobe and other big corporations CLI: wsk Serverless Framework plugin

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OPENWHISK TRIGGERS OPENWHISK TRIGGERS Message Queues Databases Document Stores Website or Web Apps Service APIs IoT Frameworks… Couchbase

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OPENWHISK LANGUAGES OPENWHISK LANGUAGES C#, F== (.NET Core) JavaScript (Node.js) Swift Java, Scala (JVM) Go Python, PHP, Ruby Ballerina Through Docker Actions: Rust, Haskell…

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5. KUBELESS 5. KUBELESS

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KUBELESS KUBELESS Written in Go ~5100 stars ~80 contributors Latest version 1.0.5 (October 16th, 2019) Maintained by kubeless.io github.com/kubeless/kubeless Bitnami

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KUBELESS CHARACTERISTICS KUBELESS CHARACTERISTICS Simplest to install and use Aims to similarity with AWS Lambda CLI compliant with AWS Lambda CLI Prometheus monitoring of functions calls and latency CLI: kubeless Serverless Framework plugin

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asciinema $ cat kubeless.py def hello(event, context): print event return "Hello CNC from " + event['data'] asciinema $ kubeless function deploy hello --runtime python2.7 --from-file kubeless.py --handler kubeless.hello INFO[0000] Deploying function... INFO[0000] Function hello submitted for deployment INFO[0000] Check the deployment status executing 'kubeless function ls hello' asciinema $ kubectl get functions NAME AGE hello 6s asciinema $ 00:00

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KUBELESS TRIGGERS KUBELESS TRIGGERS HTTP Cronjob PubSub mechanisms Kafka NATS messaging Data stream events AWS Kinesis

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KUBELESS LANGUAGES KUBELESS LANGUAGES Go Python JavaScript (Node.js) Java (JVM) Ruby C#, F== (.NET Core) Ballerina Custom runtimes possible

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6. TRIGGERMESH 6. TRIGGERMESH

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TRIGGERMESH TRIGGERMESH Founded ex-Kubeless engineers Based upon Kubernetes & Knative triggermesh.com @triggermesh

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TRIGGERMESH TRIGGERMESH CHARACTERISTICS CHARACTERISTICS Based on Kubernetes & Knative CLI: tm Not yet open source "Early Access Program" TriggerMesh Operator for OpenShift 4.0 CI/CD of functions

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TRIGGERMESH TRIGGERS TRIGGERMESH TRIGGERS Cross-cloud triggers from AWS & Azure to functions on Knative Code Commit Cognito DynamoDB Kinesis S3 SNS SQS…

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TRIGGERMESH LANGUAGES TRIGGERMESH LANGUAGES Go JavaScript (Node.js) Python Ruby

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COMPARISON COMPARISON Local Local Docker Docker Image Image Repo Repo Base Base Image Image OpenFaaS OpenFaaS Required Required Required Fn Project Fn Project Required Required Required Fission Fission None None Required OpenWhisk OpenWhisk None None None Kubeless Kubeless None None None

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OTHER PLAYERS OTHER PLAYERS More: , , , , , … Amazon Firecracker AppScale Azure Functions on Kubernetes Dispatch Gestalt Dapr IronFunctions LunchBadger Nuclio OpenLambda Ri

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WHAT ABOUT KNATIVE? WHAT ABOUT KNATIVE?

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We will say it again… packaging code into containers should be considered a FaaS anti-pattern!