Presentation Docker Geneva Jug 14/04/2014

1. Continuous Delivery with
Jenkins, Docker and
Exoscale
Julia Mateo
@juliamateodc
@duchessswiss http://jduchess.ch/
Thursday, April 16, 15

2. Goal
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3. Continuous deployment vs
Continuous Delivery
• Continuous delivery : series of practices designed
to ensure that code can be rapidly and safely
deployed to production
• Continuous deployment is the next step of
continuous delivery: Every change that passes the
automated tests is deployed to production
automatically
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4. Continuous Delivery
Source : http://xebia.github.io/cd-with-docker/#/
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5. What is Docker ?
• Open platform for developers and
sysadmins to build, ship, and run distributed
applications.
From https://www.docker.com/whatisdocker/
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6. Docker vsVMs
Server
Host OS
Hypervisor
Guest
OS
Guest
OS
Guest
OS
Guest
OS
Libs/
Bins
Libs/
Bins
Libs/
Bins
App 1 App 2 App 3 App 4
Libs/
Bins
Server
Host OS
Docker Engine
Libs/Bins
Libs/
Bins
App 1 App 2 App 3 App 4
c1 c2 c3 c4
VM1 VM2 VM3 VM4
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7. Containers and images
Docker
Images
Docker
Images
libcontainer, Union Filesystem
Centos Ubuntu
Jetty
add App.war
Container 1
OracleDB
Container 2
Read
only
Writable
Writable
Read
only
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8. Using Docker for
Continuous Delivery
• Simple : container as deployment unit
• Fast : Only need to build/upload the ∆ image
• Robust : less scope of error than custom
deployment scripts
• Other advantages : docker facilitates fast rollback
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9. Deploy with Docker :
test environment
Localhost
docker publish plugin
ssh jenkins plugin
Node 1
Node 2
Thursday, April 16, 15

10. Deploy with Docker :
test environment
Localhost
docker publish plugin
ssh jenkins plugin
Node 1
Node 2
Container 1
Container 2
Container 3
Container 4
Container 5
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11. The web app to deploy
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12. Deploy with Docker :
test environment
Localhost
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13. Deploy with Docker :
test environment
Localhost
Thursday, April 16, 15

14. Deploy with Docker :
test environment
Localhost
Thursday, April 16, 15

15. Deploy with Docker :
test environment
Localhost
Thursday, April 16, 15

16. Deploy with Docker :
test environment
Localhost
Thursday, April 16, 15

17. Deploy with Docker :
test environment
Localhost
docker publish plugin
Thursday, April 16, 15

18. Deploy with Docker :
test environment
Localhost
docker publish plugin
ssh jenkins plugin
Thursday, April 16, 15

19. Deploy with Docker :
test environment
Localhost
docker publish plugin
ssh jenkins plugin
Thursday, April 16, 15

20. Docker publish plugin
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21. Using Docker into
Docker
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22. Deploy with Docker :
test environment
Localhost
docker publish plugin
ssh jenkins plugin
Thursday, April 16, 15

23. Deploy with Docker :
test environment
Localhost
docker publish plugin
ssh jenkins plugin
Thursday, April 16, 15

24. Docker private
repository
• Add the registry’s location to the
repository name :
my.registry.address:port/repositoryname
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25. Deploy with Docker :
test environment
Localhost
docker publish plugin
ssh jenkins plugin
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26. Deploy with Docker :
test environment
Localhost
docker publish plugin
ssh jenkins plugin
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27. Jenkins ssh plugin
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28. SSH agent forward into
a docker container
>> docker run --privileged=true -i -t
-v $(readlink -f $SSH_AUTH_SOCK):/ssh-agent
-e SSH_AUTH_SOCK=/ssh-agent
-v /home/hortis/docker/jenkins:/jenkins -p 8900:8080
--link sonarMysql:sonar_mysql --link sonar:sonar
--link docker-registry:docker-registry -d hortis/jenkins:latest
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29. SSH agent forward into
a docker container
>> docker run --privileged=true -i -t
-v $(readlink -f $SSH_AUTH_SOCK):/ssh-agent
-e SSH_AUTH_SOCK=/ssh-agent
-v /home/hortis/docker/jenkins:/jenkins -p 8900:8080
--link sonarMysql:sonar_mysql --link sonar:sonar
--link docker-registry:docker-registry -d hortis/jenkins:latest
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30. Demo
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31. Multi container apps
• Link containers with alias
docker run -v /home/hortis/docker/sonar/logs:/opt/sonar/logs/
-v /home/hortis/docker/sonar/extensions:/opt/sonar/extensions -p 9000:9000
--link sonarMysql:mysql --name sonar -d hortis/sonar:latest
• Use docker compose (old Fig)
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32. Deploying to
production
• Canary releasing
• Blue Green deployment
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33. Blue Green Deployment
DatabaseWeb app
DatabaseWeb appWeb app Database
Web app Database
User
requests
Router
OldVersion
NewVersion
Source : http://martinfowler.com/bliki/BlueGreenDeployment.html
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34. Canary releasing
DatabaseWeb app
DatabaseWeb appWeb app Database
Web app Database
User
requests
Router
OldVersion
NewVersion
Most users
95%
Some users
5%
Source : http://martinfowler.com/bliki/CanaryRelease.html
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35. Thank you !
QUESTIONS
?
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