developing and deploying php with docker

Developing and Deploying PHP with Docker

Midwest PHP 2015

Patrick Mizer

SpareFoot - Austin, TXZCE: PHP4, PHP5, ZF

We use Docker at SpareFoot:● Containers for PHP services in dev● CI server builds and deploys containers ● Containers in production for Solr Search and Node.js

apps

First, what I am NOT going to cover

First, what I am NOT going to cover

Docker internals○ LXC Containers

■ Kernel namespacing (pid, mnt, net, user, ipc)■ Control groups (blkio, cpu, devices)

First, what I am NOT going to cover

The Docker - CoreOS Debate○ Rocket vs Docker○ Whether everything running through one daemon is

a security risk○ Whether Docker is a platform or a composable

building block

What I am going to cover

What I am going to cover

● What is Docker?● Why you should care about Docker● How Docker works● Building a Docker container for a PHP

application● Docker tools

○ Compose○ Docker-Machine○ Swarm

● Live demos (time permitting)

What is Docker?

What is Docker?

Docker is an open platform for developers and sysadmins to build, ship, and run distributed applications.

Docker enables apps to be quickly assembled from components and eliminates the friction between development, QA, and production environments.

Oh, so it’s a Virtual Machine?

Oh, so it’s a Virtual Machine?

Physical Server

Host OS

Libs

App

Traditional server model

Physical Server

Host OS

Libs

App

Physical Server

Host OS

Hypervisor

Guest OS

Libs

App

Guest OS

Libs

App

Traditional server model Virtual machine model

Physical Server

Host OS

Hypervisor

Guest OS

Libs

App

Guest OS

Libs

App

Virtual machine model

Physical Server

Host OS

Hypervisor

Guest OS

Libs

App

Guest OS

Libs

App

Physical Server

Host OS

Docker Engine

Libs

App

Libs

App

Virtual machine model Docker model

Physical Server

Host OS

Docker Engine

Libs

App

Libs

App Docker Containers● Smaller than VMs (no O/S)● Isolation of VMs without overhead

The Container

The Container Metaphor

The Container Metaphor

Things to ship

Platformsfor shipped

goods

The Container Metaphor

Things to ship

Platformsfor shipped

goods

The Container Metaphor

The Container Metaphor

The Container Metaphor

Technologies Platforms

The Container Metaphor

Platforms

The Container Metaphor

The Container Metaphor

Got it?

Got it?

You really should!

Why should you care about Docker?

Why you should care

● Portable runtime environment for your code○ Stable dev environment○ Build once, run anywhere*

Why you should care

● Portable runtime environment for your code○ Stable dev environment○ Build once, run anywhere*

● Immutable build artifacts○ Avoid dependency hell○ Avoid “drift”

Why you should care

● Portable runtime environment for your code○ Stable dev environment○ Build once, run anywhere*

■ New technologies!● Immutable build artifacts

○ Avoid dependency hell○ Avoid “drift”

● Clear separation of concerns○ Dev - Code, Dependencies, Libs○ DevOps - Provisioning, Logging, Network

Stable Dev Environment

Virtual Machine

% vagrant up

Stable Dev Environment

Virtual Machine

% vagrant up

But how do you model this?

Presentation

Service

Data

[ JSON / REST API ]

Stable Dev Environment

Virtual Machine

% vagrant up

Stable Dev Environment

% vagrant up

Stable Dev Environment

PHP App 1

Redis Cache

Solr Search

MySQL DB

Virtual Machine

Containers% vagrant up

PHP App 2

Separation of concerns

Developers

Developers

Inside the container:● Code● Libraries● Package Manager● Data

DevOps

DevOps

Outside the container:● Logging● Monitoring● Network Configuration

Immutable Build Artifacts

2.4.10

5.6.5

5.6.23

5.5.21

5.6.23

2.4.12

5.5.21

5.6.3

2.4.09

14.10

14.04

Production

Development

Local

Immutable Build Artifacts

2.4.10

5.6.5

5.6.23

5.5.21

5.6.23

2.4.12

5.5.21

5.6.3

2.4.09

14.10

14.04

Immutable Build Artifacts

2.4.10

5.6.5

5.6.23

5.5.21

5.6.23

2.4.12

5.5.21

5.6.3

2.4.09

14.10

14.04

Immutable Build Artifacts

2.4.10

5.6.5

5.6.23

5.5.21

5.6.23

2.4.12

5.5.21

5.6.3

2.4.09

14.10

14.04

Immutable Build Artifacts

2.4.10

5.6.5

5.6.23

5.5.21

5.6.23

2.4.12

5.5.21

5.6.3

2.4.09

14.10

14.04

Immutable Build Artifacts

2.4.10

5.6.5

5.6.23

5.5.21

5.6.23

2.4.12

5.5.21

5.6.3

2.4.09

14.10

14.04

Immutable Build Artifacts

2.4.10

5.6.5

5.6.23

5.5.21

5.6.23

2.4.12

5.5.21

5.6.3

2.4.09

14.10

14.04

Immutable Build Artifacts

14.10

14.04

Production

Development

Local 2.4.12

5.6.7

2.4.10

5.5.0

2.4.10

5.5.0

Immutable Build Artifacts

14.10

14.04

2.4.12

5.6.7

2.4.10

5.5.0

2.4.10

5.5.0

Immutable Build Artifacts

14.10

14.04

2.4.12

5.6.7

2.4.10

5.5.0

2.4.10

5.5.0

Immutable Build Artifacts

14.10

14.04

2.4.12

5.6.7

2.4.10

5.5.0

2.4.10

5.5.0

2.4.12

5.6.7

Immutable Build Artifacts

14.10

14.04

2.4.12

5.6.7

2.4.10

5.5.0

2.4.10

5.5.0

2.4.12

5.6.7

Immutable Build Artifacts

14.10

14.04

2.4.12

5.6.7

2.4.10

5.5.0

2.4.10

5.5.0

2.4.12

5.6.7

2.4.12

5.6.7

Immutable Build Artifacts

14.10

14.04

2.4.12

5.6.7

2.4.10

5.5.0

2.4.10

5.5.0

2.4.12

5.6.7

2.4.12

5.6.7

Immutable Build Artifacts

14.10

14.04

2.4.12

5.6.7

2.4.10

5.5.0

2.4.10

5.5.0

2.4.12

5.6.7

2.4.12

5.6.7

OpsDev

Let’s build something...

Docker Concepts

Docker Daemon

Container 1

Container 2

Container 3

Container N

Docker CLI

docker psdocker pulldocker rundocker kill...

Docker Host Docker Registry

Image 1

Image 2

Image 3

Image N

Building our first container

% mkdir first

% cd first

% touch index.php

% touch Dockerfile

index.php

<?php

echo “Hello world”;

?>

The Dockerfile

FROM ubuntu:trusty

RUN apt-get update && \

apt-get -y install php5-cli

ADD . /app

WORKDIR /app

EXPOSE 8080

CMD ["php", "-S", "0.0.0.0:8080"]

The Dockerfile

FROM ubuntu:trustyRUN apt-get update && \

apt-get -y install php5-cli

ADD . /app

WORKDIR /app

EXPOSE 8080

CMD ["php", "-S", "0.0.0.0:8080"]

The Dockerfile

FROM ubuntu:trusty

RUN apt-get update && \

apt-get -y install php5-cliADD . /app

WORKDIR /app

EXPOSE 8080

CMD ["php", "-S", "0.0.0.0:8080"]

The Dockerfile

FROM ubuntu:trusty

RUN apt-get update && \

apt-get -y install php5-cli

ADD . /app

WORKDIR /appEXPOSE 8080

CMD ["php", "-S", "0.0.0.0:8080"]

The Dockerfile

FROM ubuntu:trusty

RUN apt-get update && \

apt-get -y install php5-cli

ADD . /app

WORKDIR /app

EXPOSE 8080CMD ["php", "-S", "0.0.0.0:8080"]

The Dockerfile

FROM ubuntu:trusty

RUN apt-get update && \

apt-get -y install php5-cli

ADD . /app

WORKDIR /app

EXPOSE 8080

CMD ["php", "-S", "0.0.0.0:8080"]

The Docker way: 1 process per container

The Dockerfile

FROM ubuntu:trusty

RUN apt-get update && \

apt-get -y install php5-cli

ADD . /app

WORKDIR /app

EXPOSE 8080

CMD ["php", "-S", "0.0.0.0:8080"]

I’m Lazy: /usr/sbin/apache2ctl -D FOREGROUND

Build our image

% docker build -t mizer/helloworld .

Build our image

Docker Daemon

Docker CLI

docker build -t mizer/helloworld .

Docker Host Docker Registry

mizer/helloworld

ubuntu

The Dockerfile

FROM ubuntu:trusty

RUN apt-get update && \

apt-get -y install php5-cli

ADD . /app

WORKDIR /app

EXPOSE 8080

CMD ["php", "-S", "0.0.0.0:8080"]

step 0

step 1

step 2

step 4

step 5

step 3

Each step is cached :)

Run our first container

% sudo docker run -p 8080:8080

--name hello_1 -d mizer/helloworld

Run our first container

Docker Daemon

Docker CLI

docker run -p 8080:8080 --name hello_1 -d mizer/helloworld

Docker Host Docker Registry

mizer/helloworld

hello_1

Check our running containers

% docker ps

Check our running containers

% docker ps

CONTAINER ID IMAGE COMMAND PORTS NAMES

5f1b82bb90b8 mizer/helloworld:latest "php -S 0.0.0.0:8080 8080->8080/tcp hello_1

Create another

% docker run -p 8181:8080

--name hello_2 -d mizer/helloworld

Docker Concepts

Docker Daemon

Docker CLI

docker run -p 8181:8080 --name hello_2 -d mizer/helloworld

Docker Host Docker Registry

mizer/helloworld

hello_1

hello_2

Check our running containers

% docker ps

CONTAINER ID IMAGE COMMAND PORTS NAMES

5f1b82bb90b8 mizer/helloworld:latest "php -S 0.0.0.0:8080 8080->8080/tcp hello_1

3d1b8ccb80c7 mizer/helloworld:latest "php -S 0.0.0.0:8080 8181->8080/tcp hello_2

Let’s remove both containers

% sudo docker rm -f hello_1 hello_2

Let’s remove both containers

Docker Daemon

Docker CLI

docker rm -f hello_1 hello_2

Docker Host Docker Registry

mizer/helloworld

… and the image

% sudo docker rmi -f mizer/helloworld

… and the image

Docker Daemon

Docker CLI

docker run -p 8080:8080 --name hello_2 -d mizer/hello

Docker Host Docker Registry

Creating a base image

FROM ubuntu:trusty

RUN apt-get update && \

apt-get -y install php5-cli

% docker build -t mizer/php

Creating a base image

Docker Daemon

Docker CLI

docker build -t mizer/php .

Docker Host Docker Registry

mizer/php

Using our base image

FROM mizer/php:latest

ADD . /app

WORKDIR /app

EXPOSE 8080

CMD ["php", "-S", "0.0.0.0:8080"]

% sudo docker build -t mizer/helloworld .

Creating a base image

Docker Daemon

Docker CLI

docker build -t mizer/php .

Docker Host Docker Registry

mizer/php

mizer/helloworld

Create the container

% sudo docker run -p 8080:8080

--name hello_1 -d mizer/helloworld

Create the container

Docker Daemon

Docker CLI

docker run -p 8080:8080 --name hello_1 -d mizer/hello

Docker Host Docker Registry

mizer/php

mizer/hellohello_1

Community images

% docker search php

Community images

% docker search phpNAME DESCRIPTION STARS OFFICIAL AUTOMATED

php While designed for web development, the PH... 148 [OK]

tutum/apache-php Apache+PHP base image - listens in port 80... 59 [OK]

maxexcloo/nginx-php Docker framework container with Nginx and ... 30 [OK]

eboraas/apache-php PHP5 on Apache (with SSL support), built o... 17 [OK]

richarvey/nginx-php-fpm Container running Nginx + PHP-FPM capable ... 10 [OK]

php-zendserver Zend Server - the integrated PHP applicati... 10 [OK]

clue/phpvirtualbox phpVirtualBox is a modern web interface de... 9 [OK]

jdeathe/centos-ssh-apache-php CentOS-6 6.5 x86_64 / Apache / PHP / PHP m... 8 [OK]

jprjr/php-fpm Arch Linux-based image with PHP-FPM instal... 8 [OK]

darh/php-essentials Provides a container full of php-cli tools... 7 [OK]

million12/nginx-php Nginx + PHP-FPM, CentOS-7 based. 5 [OK]

reinblau/php-apache2 Apache2 Server for PHP Projects 4 [OK]

eriksencosta/php-dev Docker image with latest supported PHP ver... 4 [OK]

alreece45/phusion-nginx-php nginx and php-fpm with configurable docume... 3 [OK]

million12/php-app-ssh million12/php-app, extended with SSHD and ... 2 [OK]

simpledrupalcloud/php 1 [OK]

yoshz/apache-php-dev A docker image with Apache, PHP 5.5, drush... 1 [OK]

azukiapp/php-apache Base docker image to run PHP applications ... 1 [OK]

A modern architecture

A modern architecture

Presentation

Service

Data

[ JSON / REST API ]

A modern architecture

Docker Daemon

Docker CLIDocker Host Docker Registry

mizer/php

mizer/webweb_1

service_1

data_1

mizer/service

mizer/data

mizer/mysql

mizer/data

Got it?



Docker Orchestration

● Compose● Machine● Swarm

South Africa

Fig Docker Compose

Compose is a tool for defining and running complex applications with Docker. With Compose, you define a multi-container application in a single file, then spin your application up in a single command which does everything that needs to be done to get it running.

docker-compose.ymlwebapp1:

build: webapp/.

command: php -S 0.0.0.0:8000 -t /code

ports:

- "8000:8000"

environment:

- DSN=mysql:host=mysql;dbname=test

- USERNAME=test

- PASSWORD=foo

links:

- mysql

Docker Compose

% docker-compose up

Docker-compose

Docker Daemon

Docker CLI

Docker Host Docker Registry

mizer/php

mizer/webweb_1

service_1

data_1

mizer/service

mizer/data

mizer/mysql

mizer/data

docker-compose.yml

% docker-compose up

Docker Machine

Docker Machine takes you from zero-to-Docker in seconds with a single command.

Before Docker Machine, a developer would need to log in to the host and follow installation and configuration instructions specifically for that host and its OS. With Docker Machine, whether provisioning the Docker daemon on a new laptop, on virtual machines in the data center, or on a public cloud instance, the same, single command.

Swarm

Docker CLI

Docker Daemon

Container 1

Container 2

Container 3

Docker Host

Docker Daemon

Container 1

Container 2

Container 3

Docker Host

Docker Daemon

Container 1

Container 2

Container 3

Docker Host

Docker-machine

Docker Swarm

Docker Swarm is native clustering for Docker. It turns a pool of Docker hosts into a single, virtual host.

Swarm serves the standard Docker API, so any tool which already communicates with a Docker daemon can use Swarm to transparently scale to multiple hosts: Dokku, Compose, Krane, Flynn, Deis, DockerUI, Shipyard, Drone, Jenkins... and, of course, the Docker client itself.

“Cows not pets”

“Cows not pets”

Pets● Pets have names● They are unique, loving, hand

raised and cared for● When they are sick, they are

taken to the vet.

“Cows not pets”

Pets● Pets have names● They are unique, loving, hand

raised and cared for● When they are sick, they are

taken to the vet.

Cows● Cows have numbers● They are not unique, they are a

commodity.● When they are sick....?

“Cows not pets”

Pets● Pets have names● They are unique, loving, hand

raised and cared for● When they are sick, they are

taken to the vet.

Cows● Cows have numbers● They are not unique, they are a

commodity.● When they are sick....?

Swarm

Docker CLI

Docker Daemon

Container 1

Container 2

Container 3

Docker Host

Docker Daemon

Container 1

Container 2

Container 3

Docker Host

Docker Daemon

Container 1

Container 2

Container 3

Docker Host

Swarm

Live demo...

Thank you!

patrick@sparefoot.com

Github: https://github.com/maximizer● I put all of the examples in

docker-midwestphp15

https://joind.in/13076