Docker For PHP Dev Environments

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A presentation by @stuherbert  for @GanbaroDigital Docker For Dev Envs Containers For PHP App Development

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@GanbaroDigital Why?

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@GanbaroDigital PHP Dev Env Blueprint

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@GanbaroDigital vs

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@GanbaroDigital I’m sharing my experience using VMs and then containers over the last 15+ years.

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@GanbaroDigital Your experience may be different.

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@GanbaroDigital I am here to learn from you too!

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@GanbaroDigital Please Do Ask Questions!

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@GanbaroDigital Why?

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@GanbaroDigital ?? ?? Who Currently Uses Virtual Machines For Dev Environments?

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@GanbaroDigital This has been a long journey for me.

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@GanbaroDigital 1999/2000 VMWare Workstation

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@GanbaroDigital 1999/2000 2008 VMWare Workstation VMWare ESX

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@GanbaroDigital 1999/2000 2008 2010 VMWare Workstation VMWare ESX Linux KVM

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@GanbaroDigital 1999/2000 2008 2010 2012 VMWare Workstation VMWare ESX Linux KVM VirtualBox & Vagrant

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@GanbaroDigital 1999/2000 2008 2010 2012 2015 VMWare Workstation VMWare ESX Linux KVM VirtualBox & Vagrant Docker Containers

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@GanbaroDigital 2018

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@GanbaroDigital A search for improved stability, performance, and scalability.

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@GanbaroDigital ?? ?? Why Do We Use Virtual Machines For Dev Environments?

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@GanbaroDigital $

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@GanbaroDigital http://localhost:8080/route/to/page?… $

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@GanbaroDigital The web changed everything.

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@GanbaroDigital We went from maintaining software to creating software.

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@GanbaroDigital We went from developers per project to projects per developer.

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@GanbaroDigital

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@GanbaroDigital http://172.16.0.2/route/to/page?… $ Virtual Machine

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@GanbaroDigital

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@GanbaroDigital http://localhost/route/to/page?… $ Virtual Machine

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@GanbaroDigital

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@GanbaroDigital

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@GanbaroDigital http://172.16.0.2/route/to/page?… $ Virtual Machine

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@GanbaroDigital http://172.16.0.2/route/to/page?… $ Virtual Machine Virtual Machine Virtual Machine Virtual Machine

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@GanbaroDigital

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@GanbaroDigital

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@GanbaroDigital http://172.16.0.2/route/to/page?… $ Virtual Machine Virtual Machine Virtual Machine Virtual Machine

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@GanbaroDigital http://172.16.0.2/route/to/page?… $ Container Container Container Container

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@GanbaroDigital Containers Are Lightweight At Runtime

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@GanbaroDigital Containers Scale Better Than VMs

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@GanbaroDigital Containers Are Fast* * on Linux!

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@GanbaroDigital Containers Are Much Easier To Build

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@GanbaroDigital

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@GanbaroDigital “ Container Images Are A Unit of Delivery

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@GanbaroDigital After two years of doing all my dev work in containers … … I’m never going back to developing in VMs.

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@GanbaroDigital PHP Dev Env Blueprint

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@GanbaroDigital

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@GanbaroDigital

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@GanbaroDigital Docker Compose (has no logo - sorry) (ships with Docker for Mac) (separate download on Linux)

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@GanbaroDigital $ docker network create

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@GanbaroDigital dnsmasq

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@GanbaroDigital

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@GanbaroDigital https://hub.docker.com/r/ganbarodigital/

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@GanbaroDigital

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@GanbaroDigital Steps 1. Create a network for our dev env 2. Deﬁne our dev env 3. Get DNS working for our dev env 4. Add a database server 5. Add our app

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@GanbaroDigital Step 1

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@GanbaroDigital Steps 1. Create a network for our dev env 2. Deﬁne our dev env 3. Get DNS working for our dev env 4. Add a database server 5. Add our app

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@GanbaroDigital

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@GanbaroDigital

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@GanbaroDigital $ docker network create   --subnet 172.19.0.0/24 appdev

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@GanbaroDigital $ docker network create   --subnet 172.19.0.0/24 appdev

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@GanbaroDigital $ docker network create   --subnet 172.19.0.0/24 appdev

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@GanbaroDigital $ docker network create   --subnet 172.19.0.0/24 appdev

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@GanbaroDigital 172.19.0.0/24

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@GanbaroDigital Step 2

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@GanbaroDigital Steps 1. Create a network for our dev env 2. Deﬁne our dev env 3. Get DNS working for our dev env 4. Add a database server 5. Add our app

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@GanbaroDigital 172.19.0.0/24

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@GanbaroDigital myapp my-project

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@GanbaroDigital docker-appenv myapp my-project

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@GanbaroDigital docker-compose.yaml docker-appenv myapp my-project

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@GanbaroDigital

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@GanbaroDigital docker-appenv myapp my-project

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@GanbaroDigital docker-appenv myapp my-project

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@GanbaroDigital docker-appenv network-lead conﬁg data logs

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@GanbaroDigital

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@GanbaroDigital $ docker-compose start network-lead

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@GanbaroDigital

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@GanbaroDigital network-lead 172.19.0.2 172.19.0.0/24

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@GanbaroDigital $ ping 172.19.0.2

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@GanbaroDigital Step 3

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@GanbaroDigital Steps 1. Create a network for our dev env 2. Deﬁne our dev env 3. Get DNS working for our dev env 4. Add a database server 5. Add our app

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@GanbaroDigital network-lead 172.19.0.2 172.19.0.0/24

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@GanbaroDigital $ ping 172.19.0.2

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@GanbaroDigital $ ping network-lead.appdev

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@GanbaroDigital dnsmasq

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@GanbaroDigital Multi-Resolver O/S Support 1. Ubuntu 16.04 - supported by default 2. Ubuntu 17.04 - install & conﬁg required 3. MacOS - supported by default

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@GanbaroDigital /etc/NetworkManager/dnsmasq.d/ appdev.conf (on Ubuntu)

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@GanbaroDigital server=/appdev/172.19.0.2

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@GanbaroDigital server=/appdev/172.19.0.2

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@GanbaroDigital server=/appdev/172.19.0.2

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@GanbaroDigital network-lead 172.19.0.2 172.19.0.0/24

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@GanbaroDigital Reboot to make sure new conﬁg is picked up.

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@GanbaroDigital /etc/resolver/appdev (on MacOS)

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@GanbaroDigital /etc/resolver/appdev (on MacOS)

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@GanbaroDigital nameserver 172.19.0.2

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@GanbaroDigital network-lead 172.19.0.2 172.19.0.0/24

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@GanbaroDigital Out of the box, Docker for Mac needs an extra step. I’ll cover that separately at the end.

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@GanbaroDigital $ ping network-lead.appdev

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@GanbaroDigital

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@GanbaroDigital Setting up DNS is a one-off task per Docker network

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@GanbaroDigital Step 4

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@GanbaroDigital Steps 1. Create a network for our dev env 2. Deﬁne our dev env 3. Get DNS working for our dev env 4. Add a database server 5. Add our app

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@GanbaroDigital The hard work is done :)

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@GanbaroDigital

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@GanbaroDigital docker-appenv network-lead conﬁg data logs

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@GanbaroDigital docker-appenv mysql conﬁg data logs

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@GanbaroDigital

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@GanbaroDigital Acid test for container design #1 Will you lose anything if you destroy the container?

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@GanbaroDigital I’ll tackle container image design in a separate talk.

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@GanbaroDigital $ docker-compose start mysql

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@GanbaroDigital network-lead mysql 172.19.0.2 172.19.0.3 172.19.0.0/24

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@GanbaroDigital

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@GanbaroDigital $ mysql -h mysql.appdev -u root -p

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@GanbaroDigital You can use MySQL Workbench from the host OS too. Or any other tools. It’s just MySQL after all.

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@GanbaroDigital Step 5

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@GanbaroDigital Steps 1. Create a network for our dev env 2. Deﬁne our dev env 3. Get DNS working for our dev env 4. Add a database server 5. Add our app

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@GanbaroDigital

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@GanbaroDigital

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@GanbaroDigital docker-appenv myapp my-project

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@GanbaroDigital docker-appenv myapp my-project

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@GanbaroDigital

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@GanbaroDigital

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@GanbaroDigital $ docker-compose start myapp

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@GanbaroDigital

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@GanbaroDigital network-lead mysql myapp wordpress 172.19.0.2 172.19.0.3 172.19.0.4 172.19.0.5 172.19.0.0/24

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@GanbaroDigital PDO: mysql:host=mysql;charset=UTF8

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@GanbaroDigital

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@GanbaroDigital vs

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@GanbaroDigital The differences are important to PHP developers.

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@GanbaroDigital

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@GanbaroDigital

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@GanbaroDigital

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@GanbaroDigital There *is* a workaround (of sorts) https://github.com/docker/for-mac/issues/ 155#issuecomment-320509769

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@GanbaroDigital Maxed-out 2016 MacBook Pro vs an UltraBook running Linux

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@GanbaroDigital It’s hardly a fair ﬁght.

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@GanbaroDigital A B 0 32 64 96 128 160

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@GanbaroDigital Linux MacOS 0 32 64 96 128 160

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@GanbaroDigital Docker for Mac has performance bottlenecks compared to Docker on Linux

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@GanbaroDigital

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@GanbaroDigital

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@GanbaroDigital Containers Are A Linux-Native Technology

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@GanbaroDigital Containers Are Not Native To MacOS

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@GanbaroDigital On MacOS containers run in a virtual machine

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@GanbaroDigital On MacOS Docker isn’t a seamless experience (yet)

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@GanbaroDigital I switched to Linux for all my dev work. Because that’s where the best Docker experience is.

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Thank You Any Questions? A presentation by @stuherbert  for @GanbaroDigital

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@GanbaroDigital Image Credits 1. Docker Logo:  https://www.docker.com/brand-guidelines 2. Brigadier Mk3: https://flic.kr/p/jB4t16 3. Container Wall: https://flic.kr/p/fMsCgA 4. Container Ship: https://flic.kr/p/SGHmdX

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@GanbaroDigital Image Credits 1. Brick Wall: https://flic.kr/p/wCRJZ4 2. Single Tortoise: https://flic.kr/p/wBEFaf 3. Multiple Tortoises: https://flic.kr/p/RxXZag 4. Isolation: https://flic.kr/p/pQnn9e

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@GanbaroDigital Image Credits 1. Data Center: https://ﬂic.kr/p/4Fnm8M