Kubernetes Serverless Frameworks

Slides of a presentation given at:
* Cloud Native Computing Switzerland meetup, Zurich, May 9th 2019
* Swisscom OpenShift TechTalk Bern, September 18th, 2019
* Swisscom OpenShift TechTalk Zurich, October 23rd, 2019
* Swisscom OpenShift TechTalk Zurich, November 6th, 2019

Transcript

1. KUBERNETES
   KUBERNETES
   SERVERLESS
   SERVERLESS
   FRAMEWORKS
   FRAMEWORKS
   Adrian Kosmaczewski
   

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2. "Serverless"
   "FaaS"
   

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3. 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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5. HOW DOES IT WORK?
   HOW DOES IT WORK?
   

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

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

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9. 1. OPENFAAS
   1. OPENFAAS
   

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10. 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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11. 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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12. 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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14. OPENFAAS TRIGGERS
    OPENFAAS TRIGGERS
    HTTP
    Event Connectors: Kafka, Amazon SNS, Minio,
    CloudEvents, IFTTT, Redis, RabbitMQ…
    

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15. 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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16. 2. FN PROJECT
    2. FN PROJECT
    

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17. 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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18. FN PROJECT
    FN PROJECT
    CHARACTERISTICS
    CHARACTERISTICS
    

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19. FN PROJECT TRIGGERS
    FN PROJECT TRIGGERS
    HTTP
    

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

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21. 3. FISSION
    3. FISSION
    

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22. 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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23. 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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24. 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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25. FISSION TRIGGERS
    FISSION TRIGGERS
    HTTP
    Time
    Message Queue
    Kubernetes Watch
    

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

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27. 4. OPENWHISK
    4. OPENWHISK
    

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28. 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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29. 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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30. OPENWHISK TRIGGERS
    OPENWHISK TRIGGERS
    Message Queues
    Databases
    Document Stores
    Website or Web Apps
    Service APIs
    IoT Frameworks…
    Couchbase
    

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31. 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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32. 5. KUBELESS
    5. KUBELESS
    

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33. 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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34. 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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35. 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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37. KUBELESS TRIGGERS
    KUBELESS TRIGGERS
    HTTP
    Cronjob
    PubSub mechanisms
    Kafka
    NATS messaging
    Data stream events
    AWS Kinesis
    

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

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39. 6. TRIGGERMESH
    6. TRIGGERMESH
    

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

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41. 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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43. 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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44. TRIGGERMESH LANGUAGES
    TRIGGERMESH LANGUAGES
    Go
    JavaScript (Node.js)
    Python
    Ruby
    

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

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47. WHAT ABOUT KNATIVE?
    WHAT ABOUT KNATIVE?
    

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

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52. THANKS!
    THANKS!
    Adrian Kosmaczewski – adrian@vshn.ch
    

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