Docker at eBay

Ted DziubaSenior Member of Technical StaffeBay Now

tdziuba@ebay.com

Wednesday, July 31, 13

Docker at eBay

Virtualenvs Broken Promises: Encapsulation

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ted@workstation:~$ pip install lxml

This will fail spectactularly on a clean Ubuntu machine.

Wednesday, July 31, 13

Docker at eBay

Virtualenvs Broken Promises: Encapsulation

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Get your OS-level dependencies first, of course.

ted@workstation:~$ sudo apt-get install python-dev libxml2-dev libxslt1-dev

Works on My Machine Works on Our Machines Works in Production

Wednesday, July 31, 13

Docker at eBay

Getting There with Vagrant

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Works on My Machine Works on Our Machines Works in Production

install_cmd = apt-get update; apt-get install -y python-dev \ libxml2-dev libxslt1-dev; pip install -r requirements.txt;

config.vm.provision :shell, :inline => install_cmd

Wednesday, July 31, 13

Docker at eBay

You Cant Ship a Vagrantfile

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Vagrant VM Production

Application

Database Redis

Memcache RabbitMQ

Load Balancer

Database

Load Balancer

Database

Database

Redis

Load Balancer

Redis

Application

Load Balancer

Application

RabbitMQ

Load Balancer

RabbitMQ

RabbitMQ

Memcache

Memcache

Memcache

Memcache

Memcache

Memcache

Memcache

Wednesday, July 31, 13

Docker at eBay

Production never gets less containerized.

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Wednesday, July 31, 13

Docker at eBay

Containerizing Development in eBay Now

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FROM teddziuba/python2.7

ADD requirements.txt /tmp/requirements.txtRUN pip install -r /tmp/requirements.txt

Application Dockerfile

Containerized DBted@workstation:~$ docker run -d teddziuba/postgresql-development-9.2

Django manage.py wrapper

ted@workstation:~$ docker run -t -i -p 8000:8000 -e DATABASE_URL=... -v /path/to/src:/app-dev ebaynow python /app-dev/manage.py runserver 0.0.0.0:8000

Wednesday, July 31, 13

Docker at eBay

Containerize service dependencies and address them as environment variables.

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Wednesday, July 31, 13

Docker at eBay

Development Containers Go Straight to CI

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Thing Under Test

Database Container

Integration Test Case Container

Application Container

Jenkins Test Runner

Wednesday, July 31, 13

Docker at eBay

Run database driven tests in parallel.

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Wednesday, July 31, 13

Docker at eBay

Docker in Production at eBay (Coming Soon)

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Thing Under Test

Database Container

Integration Test Case Container

Thing Serving HTTP Traffic

Production Database

Load Balancer

Application Container

Database Container

Emacs

My Workstation Jenkins Production

Wednesday, July 31, 13

Docker at eBay 12

Works on My Machine Works on Our Machines Works in Production

Wednesday, July 31, 13

Docker at eBay

Questions?

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Wednesday, July 31, 13