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Configuration Managementfor Development Environments

FOSDEM 6th February 2011

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Gareth Rushgrove

gareth rushgrove | morethanseven.net

morethanseven.net

Work at FreeAgent

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freeagentcentral.com

devopsweekly.com

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Problems

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1. Not all developers want to be sysadmins

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2. New employees

3. Works on my machine

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4. Running a full stack locally

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5. Service based architectures

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Solutions

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1. Virtualisation

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VirtualBox

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VMware

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Virtualisation needs powerful hardware

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What about editing code?

Shared Folders or NFS

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Doubledown

Vim

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To the Cloud

Amazon EC2

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Rackspace Cloud

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Private Clouds

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Devstructure

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devstructure.com

2. Local configuration management

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Chef solo

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Puppet standalone

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Vagrant

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vagrantup.com

What is Vagrant?

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- Automated virtual machine creation using Oracle’s VirtualBox

- Automated provisioning of virtual environments using Chef or Puppet

- Full SSH access to created environments

- Assign a static IP to your VM, accessible from your machine

- Forward ports to the host machine

- Shared folders allows you to continue using your own editor

- Package environments into distributable boxes

- Completely tear down environment when you’re done

- Easily rebuild a complete environment with a single command

$ gem install vagrant$ vagrant box add lucid32 http://.../lucid32.box$ vagrant init$ vagrant up

Vagrant up

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Vagrant::Config.run do |config| config.vm.box = "lucid32"end

Vagrantfile

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Vagrant::Config.run do |config| config.vm.forward_port("web", 80, 8080) config.vm.forward_port("ftp", 21, 4567) config.vm.forward_port("ssh", 22, 2222, :auto => true)end

Port forwarding

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Vagrant::Config.run do |config| config.vm.share_folder("folder", "/guest", "../host")end

Shared folders

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Vagrant::Config.run do |config| config.vm.define :web do |web_config| web_config.vm.box = "web" web_config.vm.forward_port("http", 80, 8080) end

config.vm.define :db do |db_config| db_config.vm.box = "db" db_config.vm.forward_port("db", 3306, 3306) endend

Multiple VMs

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Vagrant provisioning with Puppet

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Vagrant::Config.run do |config| config.vm.provision :puppet do |puppet| puppet.manifests_path = "puppetmanifests" puppet.manifest_file = "newbox.pp" endend

Vagrant provisioning with Chef

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Vagrant::Config.run do |config| config.vm.provision :chef_solo do |chef| chef.roles_path = "roles" chef.add_role("vm") endend

Vagrant::Config.run do |config| config.vm.provision :chef_solo do |chef| chef.recipe_url = "http://github.com/cookbooks.tar.gz" chef.add_recipe "garethr" chef.cookbooks_path = [:vm, "cookbooks"] chef.json.merge!({ :garethr => { :ohmyzsh => "https://github.com/.../oh-my-zsh.git", :dotvim => "https://github.com/garethr/dotvim.git" }}) endend

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Remote Tar File

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Base boxes

VeeWee

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Conclusions

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1. Executable documentation

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2. Early testing of recipes or manifests

3. Shared language between dev and ops

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FOSDEM11

Extra month free for FreeAgent

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Questions?

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