Containers vs. Serverless

Transcript

1. CONTAINERS VS. SERVERLESS
   THE GOOD, THE BAD & THE UGLY
   Niko Köbler (@dasniko)
   

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2. ABOUT ME
   ▸ Freelance Consultant/Architect/Developer/Trainer @ www.n-k.de
   ▸ Doing stuff with & without computers, writing Software, ~ 20 yrs
   ▸ Co-Lead of JUG DA (https://www.jug-da.de / @JUG_DA)
   ▸ Speaker at international Tech Conferences
   ▸ Author of „Serverless Computing in AWS Cloud“

   serverlessbuch.de
   ▸ Twitter: @dasniko
   CONTAINERS VS. SERVERLESS
   

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3. DISCLAIMER:
   THERE MIGHT(!) BE RANT

   ON CONTAINERS
   

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4. THERE IS FUSS ABOUT
   THE NAME „SERVERLESS“
   IT’S JUST A NAME!
   

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5. FAAS ON CONTAINERS…
   ▸OpenFaaS
   ▸Fn Project
   ▸OpenWhisk
   ▸Knative
   CONTAINERS VS. SERVERLESS
   ▸Fission
   ▸Kubeless
   ▸…and probably many,
   many more!
   

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6. SERVERLESS
   IS NOT
   FAAS ON CONTAINERS!
   

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7. OPERATIONAL OVERHEAD, E.G. FN PROJECT
   CONTAINERS VS. SERVERLESS
   from: https://github.com/fnproject/fn/blob/master/docs/operating/production.md
   

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8. CONTAINERS VS. SERVERLESS
   

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9. YOUR FUNCTION RUNNING IN
   A JVM PACKED INTO DOCKER
   DEPLOYED TO KUBERNETES
   ON TOP OF DC/OS MANAGED
   BY MESOS INSTALLED ON
   V I R T U A L M A C H I N E S
   C O N T R O L L E D B Y A
   HYPERVISOR RUNNING ON
   BARE METAL.
   Photo by Michael Johansson (http://www.michaeljohansson.com)
   …and I’m sure, I forgot a few layers!
   

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10. ARE YOUR
    CONTAINERS
    STABLE
    AND
    SECURE?
    Photo by Michael Johansson (http://www.michaeljohansson.com)
    http://www.diversity.net.nz/docker-and-some-serverless-ambitions/2017/11/09/
    

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11. CONTAINERS OFFER GREAT POWER, BUT
    THEY ALSO DEMAND OPERATIONAL
    RESPONSIBILITY!
    Daniel Bryant
    CONTAINERS VS. SERVERLESS
    

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12. IN THE MEANWHILE, EVOLUTION…
    CONTAINERS VS. SERVERLESS
    

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13. „CONTAINERLESS“
    https://read.acloud.guru/serverless-superheroes-lynn-langit-on-big-data-nosql-and-google-versus-aws-f4427dc8679c
    

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14. AWS FARGATE
    Run containers without managing servers or clusters
    https://aws.amazon.com/fargate/
    

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15. VENDOR
    LOCK-IN!!!
    CONTAINERS VS. SERVERLESS
    

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16. Adrian Cockcroft

    (VP Cloud Architecture Strategy @ AWS)
    VENDOR LOCK?
    2 * VL << DIY!
    Image Source: Battery Ventures
    

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17. THE „LOCK-IN“-THING…
    CONTAINERS VS. SERVERLESS
    AVOID LOCK-IN
    HAVE TOTAL
    CONTROL
    MOVE FAST
    INNOVATE MORE
    REDUCE
    OVERHEAD
    vs.
    

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18. BUT, BUT…
    CLOUD-NATIVE!!!
    CONTAINERS VS. SERVERLESS
    

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19. NO, JUST BECAUSE YOU ARE
    USING KUBERNETES, YOU
    ARE NOT AUTOMATICALLY
    CLOUD-NATIVE!
    CONTAINERS VS. SERVERLESS
    

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20. CONTAINERS VS. SERVERLESS
    https://twitter.com/garethr/status/1057997802238869504
    I’LL LEAVE THIS HERE…
    

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21. WHAT CLOUD-NATIVE ACTUALLY MEANS…
    ▸ Containerized

    Each part (applications, processes, etc) is packaged in its own container. This
    facilitates reproducability, transparency and resource isolation.
    ▸ Dynamically orchestrated

    Containers are actively scheduled and managed to optimize resource utilization.
    ▸ Microservices oriented

    Applications are segmented into microservices. This significantly increases the
    overall agility and maintainability of applications.
    ▸ …and there’s also a Serverless-WG in CNCF, which has released version 0.1 of
    CloudEvents (cloudevents.io)!
    CONTAINERS VS. SERVERLESS
    https://www.cncf.io/about/faq/
    

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22. CONTAINERS VS. SERVERLESS
    CLOUD-NATIVE IN BULLSHIT-BINGO STYLE…
    https://medium.com/@adrianco/cloud-native-computing-5f0f41a982bf#---0-260
    

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23. LET’S GET A BIT MORE
    SOPHISTICATED…
    CONTAINERS VS. SERVERLESS
    

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24. CONTAINERS VS. SERVERLESS
    ADVANTAGES OF CONTAINERS
    ▸ Control and flexibility
    ▸ Vendor-agnostic
    ▸ Easier migration path
    ▸ Portability
    DISADVANTAGES OF CONTAINERS
    ▸ Administrative Work

    (e.g. apply security fixes for containers, etc.)
    ▸ Scaling is slower
    ▸ Running costs
    ▸ Hard to get started
    ▸ More manual intervention
    see also: https://serverless.com/blog/serverless-faas-vs-containers/
    

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25. CONTAINERS VS. SERVERLESS
    ADVANTAGES OF SERVERLESS
    ▸ Zero administration
    ▸ Pay-per-execution
    ▸ Zero cost for idle time
    ▸ Auto-scaling
    ▸ Faster time-to-market
    ▸ Microservice nature

    -> clearer codebase separation
    ▸ Significantly reduced administration and
    maintenance burden
    DISADVANTAGES OF SERVERLESS
    ▸ No standardization (yet… -> CloudEvents)
    ▸ „Black box“ environment
    ▸ Vendor lock-in (yet…)
    ▸ Cold starts (yet…)
    ▸ Complex apps can be hard to build and
    manage
    see also: https://serverless.com/blog/serverless-faas-vs-containers/
    

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26. WHEN TO

    CHOOSE WHAT?
    Honestly, it depends!
    Now it’s time for the big question:
    

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27. CONTAINERS VS. SERVERLESS
    https://twitter.com/kelseyhightower/status/921527605110513665
    RETHINK THINKING…
    

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28. CONTAINERS VS. SERVERLESS
    https://twitter.com/kelseyhightower/status/985917244029878272
    RETHINK THINKING…
    

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29. EVOLUTION DOESN’T STOP…
    CONTAINERS VS. SERVERLESS
    

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30. SERVERLESS
    AURORA
    Serverless Relational Database
    CONTAINERS VS. SERVERLESS
    

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31. SERVERLESS AURORA
    CONTAINERS VS. SERVERLESS
    https://aws.amazon.com/de/blogs/aws/in-the-works-amazon-aurora-serverless/
    ▸multi-region
    ▸multi-master
    ▸separated storage

    & compute resources
    

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32. SERVERLESS IS NOT A QUESTION OF IF,
    IT’S A QUESTION OF WHEN!
    Simon Wardley

    (Advisor @ Leading Edge Forum)
    CONTAINERS VS. SERVERLESS
    

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33. Martin Buberl, VP Engineering @ Trustpilot, Slide from https://goo.gl/VjKUXV
    SERVERLESS FIRST (CONTAINERS SECOND)
    

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34. THANK YOU.
    ANY QUESTIONS?
    Slides: http://bit.ly/sls-vs-containers
    Niko Köbler | www.n-k.de | niko@n-k.de | @dasniko
    CONTAINERS VS. SERVERLESS
    

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