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 will explore different tools for setting up, configuring, and maintaining containers as they go live.

1. From Docker to
Production
Chris Tankersley
@dragonmantank
SunshinePHP 2017
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3. Subliminal Advertisement
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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]
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24. Switch to the remote node
• Run docker-machine env sunshinephp2017
& "C:Program
FilesDockerDockerResourcesbindocker-
machine.exe" env sunshinephp2017 | 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. Docker Swarm
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33. What is Swarm?
• Docker-supplied clustering
• Define a series of services that can be deployed
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34. Setup
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Manager
Node 2Node 1

35. Register a node as a Manager
docker swarm init --advertise-addr 172.16.0.245
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36. Add nodes
docker swarm join --token [token] 172.16.0.245:2377
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37. docker-compose.yml
version: '3'
services:
phpserver:
image: php:apache
ports:
- 80:80
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38. Deploy the stack
$ docker stack deploy -c docker-compose.yml myapp
Creating network myapp_default
Creating service myapp_phpserver
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39. docker-compose.yml
version: '3'
services:
phpserver:
image: nginx
ports:
- 80:80
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40. Deploy the stack
$ docker stack deploy -c docker-compose.yml myapp
Updating service myapp_phpserver (id: sy8qtegme06g8wqgl0w9707fr)
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41. docker-compose.yml
version: '3'
services:
phpserver:
image: nginx
ports:
- 80:80
deploy:
replicas: 5
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42. docker-compose.yml
version: '3'
services:
phpserver:
image: nginx
ports:
- 80:80
deploy:
replicas: 5
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43. docker stack ps myapp
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE
ERROR PORTS
72mud5othsjf myapp_phpserver.1 nginx:latest node2 Running Running 8 minutes ago
wsf3m32u9vcr _ myapp_phpserver.1 php:apache manager1 Shutdown Shutdown 11 minutes ago
xf3wyh289bec myapp_phpserver.2 nginx:latest node1 Running Preparing 20 seconds ago
fehf1vdx4m0r myapp_phpserver.3 nginx:latest manager1 Running Preparing 20 seconds ago
pwnq65e6w7ew myapp_phpserver.4 nginx:latest manager1 Running Preparing 20 seconds ago
roxtanjughq8 myapp_phpserver.5 nginx:latest node2 Running Running 20 seconds ago
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44. Rancher
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45. Rancher and RancherOS
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46. Manages your Containers
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47. Manages your Hosts
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48. Allows you to monitor containers
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49. Allows you to manage your applications
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50. Allows you to deploy your applications
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51. Allows you to deploy your applications
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52. Supports Docker Compose
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53. Blue-Green Deployments
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Router
App v1 App v2

54. Blue-Green Deployments
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Router
App v3 App v2

55. Blue-Green Deployments
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Router
App v3 App v2

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

57. 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]

58. All Done!
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59. Deploying with Rancher CLI
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60. 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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61. Get an API Key
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62. Get an API Key
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63. Download Rancher CLI
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64. Export Stack Config
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65. Two Config Files
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66. docker-compose.yml
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67. 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

68. Edit and Deploy
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69. Edit and Deploy
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70. Finish Upgrade
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71. 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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