Devops days

Our love for Chef and Vagrant Derek Szydlowski

&Yosuke Tomita

Our setupWhy Chef and vagrant - Challenges

Starting project Knife vs Vagrant (Solo)Best practice/code to define recipes for multiple environments

Problems with Vagrant / ChefDevelopment Flow

Recap and why it’s good for international office.More external info sources add chef and vagrant link

OUTLINE

Intro

60 + production servers ( 120 total )3 + environments

50 + repos15 + active contributors

Challenges

作業記録なし

Manual Environments = Unstable unscalable environments

バラバラな環境

CHALLENGE 1

テスト不可

単調な作業 の連続 → 人為的ミス

Devs and Devops not in syncChef meets Vagrant

CHALLENGE 2

開発者は実装にのみ集中しがち

Opsの作業時間がタスクに含まれていない

新メンバーが入った時、新しい技術を入れた時の環境構築が大変

Chef / Chef-Solo: configuration management tool

Chef Recipe/Cookbook: Chef configuration file

AWS EC2: Virtual Machine Cloud Service

VirtualBox: Virtual Machine for Local Environments

Vagrant: wrapper for creating VirtualMachines, delivering chef recipes and runs Chef remotely

Knife-solo: Delivers recipes and runs chef remotely.

Words and Terms

Workflow

Outline

Development Flow

Code Example

Let’s dip into the code and see some ways to create a dev vs production server.

Production/QAKnife-Solo

roles/api.rbrun_list(

"role[base]",

"recipe[nginx]",

"recipe[python]",

"recipe[repos::api]", "recipe[monit]",

"recipe[monit::nginx]",

"recipe[monit::api]"

)

LocalVagrant

Vagrantfileconfig.vm.provision :chef_solo do |chef|

chef.add_recipe "base::git"

chef.add_recipe "nginx"

chef.add_recipe "php_pack"

chef.add_recipe "python"

chef.add_recipe "repos::api" end

Sharing recipe on local and servers

Changing server configuration in a template

cookbooks/repos/templates/api.erb------<%- case node[‘environment'] %><%- when "live" %> api_url = 'http://api.gengo.com'<%- when "qa" %> api_url = 'http://yyy.api.gengo.com'<%- when "dev" %> api_url = 'http://xxx.api.gengo.com'<%- end %>------

Define in “node/xxx.json or Vagrantfile”

Changing server configuration via Attributes

cookbooks/repos/attributes/default.rb------if node['environment'] == 'live' default['repos']['gengo_database'] = "database_live" default[‘repos’][‘nginx_security_password’] = “true”elseif node['environment'] == 'qa' default['repos']['gengo_database'] = "database_qa" default[‘repos’][‘nginx_security_password’] = “false”------

cookbooks/repos/templates/api.erb------database = ‘<%= default['repos']['gengo_database'] %>’------

Define in “node/xxx.json”or“Vagrantfile”

Changing Resource in a Recipe.

cookbooks/repos/recipes/api

if node['environment'] == "dev" git "#{node['repos']['home']}/#{project}" do repository "[email protected]:gengo/api.git" ssh_wrapper "/tmp/private_code/wrap-ssh4git.sh" action :checkout notifies :restart, "service[#{project}]" endelse deploy "/mnt#{node['repos']['home']}/#{project}" do ssh_wrapper "/tmp/private_code/wrap-ssh4git.sh" repo '[email protected]:gengo/api' branch "#{node['repos']['branch']}" migrate false keep_releases 3 notifies :restart, "service[#{project}]" endend

Define in “node/xxx.json” or“Vagrantfile”

Hurdles

Chef and Vagrant Hurdles!

opsもコードに強くなる必要がある　→ Devと一緒にやると距離が縮まる

devになかなか使ってもらえない

様々な開発環境(Window, Mac, Ubuntu….)

バグを踏むこともある 　→ コミュニティ

Bonus!

Any Questions?

Name 3 languages that Gengo has client library for?

@gengo, @gengo_ja

https://github.com/gengo

http://gengo.doorkeeper.jp