from docker to production - zendcon 2016

ZendCon, October 2016 1

From Docker to ProductionChris Tankersley@dragonmantankZendCon 2016, October 2016


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Considerations


How does your app handle storage?


What does your build process look like?


How well does your app handle scaling?


Does it make sense?


The Build Process


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


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


Sample usagedocker build \ --no-cache \ –f docker/php/phpserver.dockerfile \ –t prod_php /opt/builds/20161010


phpserver.dockerfileFROM php:fpmRUN docker-php-ext-install pdo pdo_mysqlCOPY ./ /var/www


Docker Compose


Very Good for Small Deployments• Can be used to augment your dev environment• Works well with Docker Machine


Create a machinedocker-machine create --driver digitalocean \ --digital-ocean-access-token [token] \ zendcon2016


Switch to the remote node• Run docker-machine env zendcon2016

& "C:\Program Files\Docker\Docker\Resources\bin\docker-machine.exe" env zendcon2016 | Invoke-Expression


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


version: '2'volumes: mysqldata: driver: localservices: 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

docker-compose.yml


version: '2'volumes: mysqldata: driver: localservices: 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

docker-compose.dev.yml


When doing developmentdocker-compose \ –f docker-compose.yml \ –f docker-compose.dev.yml \ up -d


When doing a deploymentdocker-compose up -d


Other Alternative – Variable Substitution• Docker Compose allows variable substitution inside the file• Wrap variables in ${}• image: ${DEPLOY_VERSION}_php


When doing a deploymentdocker build –f […] –t 20161010_php /opt/builds/20161010DEPLOY_VERSION=20161010 docker-compose up -d


Rancher

Daycamp 4 Developers - Ops for Devs 33

Rancher and RancherOS


Manages your Containers


Manages your Hosts


Allows you to monitor containers


Allows you to manage your applications


Allows you to deploy your applications


Supports Docker Compose


Blue-Green Deployments

Router

App v1 App v2



Router

App v3 App v2


Add rancher/server to the master

docker run -d \ --restart=always \ -p 8080:8080 \ –name=rancher \ rancher/server


Add rancher/agent to nodes

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]


All Done!


Deploying with Rancher CLI


What is it?• Rancher has an API!• Small executable that interacts with Rancher API• Kind of like a custom docker-compose


Get an API Key


Download Rancher CLI


Export Stack Config


Two Config Files


docker-compose.yml


Deploy ScriptACCESS_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


Edit and Deploy


Finish Upgrade


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• [email protected]• @dragonmantank

https://leanpub.com/dockerfordevs

https://leanpub.com/dockerfordevs

http://ctankersley.com/

mailto:[email protected]

from docker to production - zendcon 2016

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