Docker - introduction

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DOCKER INTRODUCTION TO CONTAINERS FOR PHP DEVELOPERS

Transcript of Docker - introduction

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DOCKERINTRODUCTION TO CONTAINERS FOR PHP DEVELOPERS

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DOCKER - INTRODUCTION FOR PHP DEVELOPERS

MICHAŁ KURZEJA

▸ CTO at accesto.com

▸ [email protected]

▸ @michalKurzeja

▸ Homebrewer

▸ Swimmer/runner

http://accesto.com
mailto:[email protected]
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WHY DOCKER?

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DOCKER

SYSTEM DEPENDENCIES

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DOCKER

SYSTEM DEPENDENCIES

PROJECT 1

PROJECT 2

PROJECT 3* M

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DOCKER

SYSTEM DEPENDENCIES

Developer 1

Tester

Developer 2

CIStaging

* N

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DOCKER - INTRODUCTION FOR PHP DEVELOPERS

PROJECT DEPENDENCY MATRIX FROM HELL

Dev Stage Prod CI

PHP ? ? ? ?

MySQL ? ? ? ?

Redis ? ? ? ?RabbitMQ ? ? ? ?Neo4j ? ? ? ?

Hadoop/Spark ? ? ? ?

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DOCKER - INTRODUCTION FOR PHP DEVELOPERS

PROJECT DEPENDENCY MATRIX FROM HELL

Dev Stage Prod CI

PHP ? ?

MySQL ? ? ?

Redis ? ? ? ?RabbitMQ ? ? ? ?Neo4j ? ? ? ?

Hadoop/Spark ? ? ? ?

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PROFITS?

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BUILD ONCE, EXECUTE EVERYWHERE*

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NO DEPENDENCY & NO INCOMPATIBILITY ISSUES

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VM WITHOUT OVERHEAD

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FULLY AUTOMATED

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EASY TO DEPLOY

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SEPARATION OF DUTIES

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SCALABILITY

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TECHNICAL BACKGROUND

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TEKST

VIRTUAL MACHINES VS CONTAINERS

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TEKST

WHY IS DOCKER FAST?

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IMAGE

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IMAGE LAYER

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imagelayers.io

http://imagelayers.io
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CONTAINER

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REPOSITORY

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DOCKER HUB

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DEMO TIME!

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docker run docker/whalesay cowsay PHP!

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docker run docker/whalesay cowsay PHP!

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docker run docker/whalesay cowsay PHP!

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docker run docker/whalesay cowsay PHP!

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docker run -v $PWD:/var/www/html -p 8081:80 php:5.6-apache

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docker run -v $PWD:/var/www/html -p 8081:80 php:5.6-apache

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docker run -v $PWD:/var/www/html -p 8081:80 php:5.6-apache 7.0-apache

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READY TO DIVE DEEPER?

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OWN DOCKER IMAGE

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FROM docker/whalesay:latest

Dockerfile

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FROM docker/whalesay:latestRUN apt-get -y update && apt-get install -y fortunes

Dockerfile

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FROM docker/whalesay:latestRUN apt-get -y update && apt-get install -y fortunesCMD /usr/games/fortune -a | cowsay

Dockerfile

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FROM docker/whalesay:latestRUN apt-get -y update && apt-get install -y fortunesCMD /usr/games/fortune -a | cowsay

docker build -t docker-whale .

Dockerfile

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FROM docker/whalesay:latestRUN apt-get -y update && apt-get install -y fortunesCMD /usr/games/fortune -a | cowsay

docker build -t docker-whale .

Dockerfile

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FROM docker/whalesay:latestRUN apt-get -y update && apt-get install -y fortunesCMD /usr/games/fortune -a | cowsay

docker build -t docker-whale .docker run docker-whale

Dockerfile

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EVERYTHING IN ONE CONTAINER ?

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MULTIPLE CONTAINERS!

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DOCKER COMPOSE

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docker run -v $PWD/www:/var/www/html -p 8081:80 php:7.0-apache

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docker run -v $PWD/www:/var/www/html -p 8081:80 php:7.0-apacheX

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#docker-compose.yml

www: image: php:7.0-apache

docker run -v $PWD/www:/var/www/html -p 8081:80 php:7.0-apache

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#docker-compose.yml

www: image: php:7.0-apache volumes: - ./www:/var/www/html

docker run -v $PWD/www:/var/www/html -p 8081:80 php:7.0-apache

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#docker-compose.yml

www: image: php:7.0-apache volumes: - ./www:/var/www/html ports: - 8081:80

docker run -v $PWD/www:/var/www/html -p 8081:80 php:7.0-apache

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#docker-compose.yml

www: image: php:7.0-apache volumes: - ./www:/var/www/html ports: - 8081:80

docker-compose up

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LINKING CONTAINERS

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WWW REDIS

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www: image: php:7.0-apache volumes: - ./www:/var/www/html ports: - 8081:80 redis: image: redis

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www: image: php:7.0-apache volumes: - ./www:/var/www/html ports: - 8081:80 links: - redis redis: image: redis

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<?php

/* www/index.php */

require_once __DIR__.'/vendor/autoload.php';

$client = new Predis\Client(['host' => 'redis']);

$counter = $client->incr('counter');

echo "Hostname: ".gethostname().PHP_EOL;

echo " Counter: ".$counter.PHP_EOL;

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docker-compose ps

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SCALING APPLICATIONS

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WWW REDIS

WWW

WWW

…

HAPROXY

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version: '2'services: www: image: php:7.0-apache volumes: - ./www:/var/www/html ports: - 8081:80 links: - redis redis: image: redis

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version: '2'services: www: … haproxy: image: 'dockercloud/haproxy:latest' redis: …

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version: '2'services: www: … haproxy: image: 'dockercloud/haproxy:latest' links: - www redis: …

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version: '2'services: www: … haproxy: image: 'dockercloud/haproxy:latest' links: - www ports: - '80:80' redis: …

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version: '2'services: www: … haproxy: image: 'dockercloud/haproxy:latest' links: - www ports: - '80:80' environment: - DOCKER_TLS_VERIFY - DOCKER_HOST - DOCKER_CERT_PATH volumes: - $DOCKER_CERT_PATH:$DOCKER_CERT_PATH redis: …

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docker-compose up -d

docker-compose scale www=3

docker-compose ps

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DEEPER?

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DOCKER SWARM

MESOSPHERE

KUBERNETES

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DOCKER

PACKAGING OWN APPLICATIONS

▸ Use Dockerfile

▸ COPY project code

▸ Orchestrate [with compose]

▸ Split into multiple containers

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DOCKER

DEPLOYMENT TIPS&TRICKS

▸ Own in-house docker repository

▸ No direct disk usage

▸ Gaufrette - filesystem abstraction

▸ Logstash - logs

▸ Session in redis/memcached

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CHALLENGE ACCEPTED?

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QUESTIONS?


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