Congrats! You and your coworkers love Docker. Docker has become an increasingly helpful tool when it comes to DevOps. We can now build smaller, more robust local development setups with the promise of mirroring production. One thing that still plagues many situations is how to get those containers into production and update them over time. We'll explore different tools for setting up, configuring, and maintaining containers as they go live.

1. From Docker to
Production
Chris Tankersley
@dragonmantank
ZendCon 2016, October 2016
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2. ZendCon, October 2016 2

3. Subliminal Advertisement
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4. ZendCon, October 2016 4

5. ZendCon, October 2016 5

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9. ZendCon, October 2016 9

10. Considerations
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11. How does your app handle storage?
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12. What does your build process look like?
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13. How well does your app handle scaling?
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14. Does it make sense?
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15. The Build Process
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16. Start Small
• Build your application
• Run composer
• Run npm/bower
• Build JS/CSS
• Use the compiled output to build an image with docker build
• Push full image to private registry
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17. docker build
• Additional options to look at
• -f, --file – Specify a different filename for the Dockerfile
• --no-cache – Don’t use a cached layer
• --pull – Always pull a new version of the image
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18. Sample usage
docker build
--no-cache
–f docker/php/phpserver.dockerfile
–t prod_php /opt/builds/20161010
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19. phpserver.dockerfile
FROM php:fpm
RUN docker-php-ext-install pdo pdo_mysql
COPY ./ /var/www
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20. Docker Compose
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21. Very Good for Small Deployments
• Can be used to augment your dev environment
• Works well with Docker Machine
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22. Create a machine
docker-machine create --driver digitalocean
--digital-ocean-access-token [token]
zendcon2016
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24. Switch to the remote node
• Run docker-machine env zendcon2016
& "C:Program
FilesDockerDockerResourcesbindocker-
machine.exe" env zendcon2016 | Invoke-Expression
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25. Set up docker-compose
• Docker Compose allows multiple config files with -f
• Have a base docker-compose.yml for Production
• Add a secondary one for Development
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26. version: '2'
volumes:
mysqldata:
driver: local
services:
nginx:
build:
context: ./
dockerfile: ./nginx.dockerfile
ports:
- 80:80
- 443:443
phpserver:
build:
context: ./
dockerfile: ./phpserver.dockerfile
working_dir: /var/www/public
mysqlserver:
image: mysql
environment:
[redacted]
volumes:
- mysqldata:/var/lib/mysql
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docker-compose.yml

27. version: '2'
volumes:
mysqldata:
driver: local
services:
nginx:
image: nginx
volumes:
- ./output_dev:/var/www/public:ro
- ./app/nginx/default.conf:/etc/nginx/conf.d/default.conf
- ./ssl:/etc/nginx/ssl/
phpserver:
build:
context: ./
dockerfile: ./phpserver.dockerfile
working_dir: /var/www/public
volumes:
- ./app:/var/www/
- ./vendor:/var/www/vendor
mysqlserver:
image: mysql
environment:
[redacted]
volumes:
- mysqldata:/var/lib/mysql
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docker-compose.dev.yml

28. When doing development
docker-compose
–f docker-compose.yml
–f docker-compose.dev.yml
up -d
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29. When doing a deployment
docker-compose up -d
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30. Other Alternative – Variable Substitution
• Docker Compose allows variable substitution inside the file
• Wrap variables in ${}
• image: ${DEPLOY_VERSION}_php
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31. When doing a deployment
docker build –f […] –t 20161010_php /opt/builds/20161010
DEPLOY_VERSION=20161010 docker-compose up -d
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32. Rancher
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33. Rancher and RancherOS
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34. Manages your Containers
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35. Manages your Hosts
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36. Allows you to monitor containers
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37. Allows you to manage your applications
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38. Allows you to deploy your applications
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39. Allows you to deploy your applications
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40. Supports Docker Compose
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41. Blue-Green Deployments
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Router
App v1 App v2

42. Blue-Green Deployments
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Router
App v3 App v2

43. Blue-Green Deployments
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Router
App v3 App v2

44. Add rancher/server to the master
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docker run -d
--restart=always
-p 8080:8080
–name=rancher
rancher/server

45. Add rancher/agent to nodes
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docker run -d
--privileged
-v /var/run/docker.sock:/var/run/docker.sock
rancher/agent:v0.7.9
http://192.168.99.100:8080/v1/scripts/[hash]

46. All Done!
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47. Deploying with Rancher CLI
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48. What is it?
• Rancher has an API!
• Small executable that interacts with Rancher API
• Kind of like a custom docker-compose
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49. Get an API Key
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50. Get an API Key
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51. Download Rancher CLI
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52. Export Stack Config
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53. Two Config Files
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54. docker-compose.yml
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55. Deploy Script
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ACCESS_KEY="C4F407CE1D8C59EB53BE"
SECRET="daNENHR241Jzm5Z9iw6VsujD9hWfjHWrDzkKmKiA"
RANCHER_URL="http://192.168.99.100:8080"
./rancher-compose --secret-key=${SECRET} --access-key=${ACCESS_KEY} --url=${RANCHER_URL} --
file=docker-compose.yml --rancher-file=rancher-compose.yml -p phptest up --upgrade -d

56. Edit and Deploy
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57. Edit and Deploy
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58. Finish Upgrade
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59. Thank You!
• Software Engineer for InQuest
• Author of “Docker for Developers”
• https://leanpub.com/dockerfordevs
• Co-Host of “Jerks Talk Games”
• http://jerkstalkgames
• http://ctankersley.com
• chris@ctankersley.com
• @dragonmantank
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