Containers vs. Serverless

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

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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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DISCLAIMER: THERE MIGHT(!) BE RANT  ON CONTAINERS

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

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

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SERVERLESS IS NOT FAAS ON CONTAINERS!

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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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CONTAINERS VS. SERVERLESS

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

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IN THE MEANWHILE, EVOLUTION… CONTAINERS VS. SERVERLESS

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

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

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VENDOR LOCK-IN!!! CONTAINERS VS. SERVERLESS

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

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

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

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

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

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

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

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

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

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

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EVOLUTION DOESN’T STOP… CONTAINERS VS. SERVERLESS

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SERVERLESS AURORA Serverless Relational Database CONTAINERS VS. SERVERLESS

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

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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