How docker change organization of development and ops teams What is the point for developers when it comes to interactions with underlying system and application dependencies Lessons learnt by @EnaleanTeam on mytuleap.com experience

1. DOCKER, DEVELOPERS TAKE POWER
Manuel Vacelet @vaceletm
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3. Bio
CTO
@EnaleanTeam
#developer
#agile
#SoftwareEngineering
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4. What is this all about ? - The fame
Started in January 2013 (22 months ago)
Open source / 650 contributors
45K docker repositories on public hub
Involved: Red Hat, Microsoft, Google, VMWare...
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5. What is this all about ? - The use cases
PaaS
Continuous delivery
Continuous integration
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6. What is this all about ? - The techno
Virtual Machine
Docker
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7. What is this all about ? - Terms
Image
Container
Dockerfile
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8. 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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10. Example: mytuleap.com
Sprint 2014, docker v0.9
4 days to pack Tuleap in a container
Demo !
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11. mytuleap.com: Architecture

12. PROBLEM #1: PAPER TIGERS

13. Developers power
Software is cheap
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14. Why software is cheap?
Easy to experiment, revert
You can make mistakes
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15. Developers power...less
Software is cheap... but deployment is hard
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16. Why deployment is hard ?
apt-get install redis npm rails bundle mongrel nginx
npm install bower
bower install angular gulp grunt
...
“For sure we can do it, it's software!”
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17. Docker redefine delivery
Traditional Docker
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18. Microservices for the masses
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19. PROBLEM #2: PRINCESS EFFECT

20. How developers do Ops
Install ubuntu
mix with debian repo
bring PC to IT desk
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21. What docker change

22. 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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24. BACK ON MYTULEAP.COM

25. How docker made this possible ?
4 days: low learning curve
High density: low resources
30s cold run: damn fast !
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26. mytuleap.com / architecture
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27. CONCLUSION

28. Developers take power
Infrastructure as code level up
Deployment is no longer an issue
Use the right tool for the right job

29. What's next / where to start ?
docker.io
Grenoble devops meetup: next tuesday (25th) @ Wizbii
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