DOCKER, DEVELOPERS TAKE POWER

Manuel Vacelet @vaceletm

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Bio

CTO#developer#agile#SoftwareEngineering

@EnaleanTeam

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What is this all about ? - The fame

Started in January 2013 (22 months ago)Open source / 650 contributors45K docker repositories on public hubInvolved: Red Hat, Microsoft, Google, VMWare...

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What is this all about ? - The use cases

PaaSContinuous deliveryContinuous integration

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What is this all about ? - The techno

Virtual Machine

Docker

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What is this all about ? - Terms

ImageContainerDockerfile

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What is this all about ? - Dockerfile

FROM debian:jessie

RUN apt-get install apache wordpress

COPY . /var/www

CMD /usr/sbin/httpd -DFOREGROUND

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Example: mytuleap.com

Sprint 2014, docker v0.94 days to pack Tuleap in a container

Demo !

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mytuleap.com: Architecture

PROBLEM #1: PAPER TIGERS

Developers power

Software is cheap

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Why software is cheap?

Easy to experiment, revertYou can make mistakes

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Developers power...less

Software is cheap... but deployment is hard

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Why deployment is hard ?

apt-get install redis npm rails bundle mongrel nginxnpm install bowerbower install angular gulp grunt...“For sure we can do it, it's software!”

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Docker redefine delivery

Traditional Docker

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Microservices for the masses

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PROBLEM #2: PRINCESS EFFECT

How developers do Ops

Install ubuntumix with debian repobring PC to IT desk

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What docker change

Shared environments

Need an elasticsearch server ?

$> docker run --name=fts enalean/elasticsearch

Need an ldap server ?

$> docker run --name=ldap enalean/ldap

Need to build your angular app ?

$> docker run -v $PWD:/build enalean/build-angular

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BACK ON MYTULEAP.COM

How docker made this possible ?

4 days: low learning curveHigh density: low resources30s cold run: damn fast !

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mytuleap.com / architecture

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CONCLUSION

Developers take power

Infrastructure as code level upDeployment is no longer an issueUse the right tool for the right job

What's next / where to start ?

Grenoble devops meetup: next tuesday (25th) @ Wizbiidocker.io

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