Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Automate your Infrastructure with Chef
Search
Christian Joudrey
February 28, 2013
Programming
9
600
Automate your Infrastructure with Chef
Talk given at ConFoo 2013 on February 28th, 2013.
Christian Joudrey
February 28, 2013
Tweet
Share
More Decks by Christian Joudrey
See All by Christian Joudrey
Writing NES games! with assembly!!
cjoudrey
1
720
Developing at Scale
cjoudrey
3
470
Scaling Rails for Black Friday / Cyber Monday at Shopify
cjoudrey
6
5.8k
Tips and Tricks from Shopify's codebase
cjoudrey
2
560
Scaling Shopify
cjoudrey
3
530
#pairwithme
cjoudrey
3
250
Two-factor authentication
cjoudrey
4
380
Other Decks in Programming
See All in Programming
iOSアプリ開発で 関数型プログラミングを実現する The Composable Architectureの紹介
yimajo
2
200
生成AIで日々のエラー調査を進めたい
yuyaabo
0
510
コードに語らせよう――自己ドキュメント化が内包する楽しさについて / Let the Code Speak
nrslib
6
1.4k
Cline指示通りに動かない? AI小説エージェントで学ぶ指示書の書き方と自動アップデートの仕組み
kamomeashizawa
1
360
「兵法」から見る質とスピード
ickx
0
260
カクヨムAndroidアプリのリブート
numeroanddev
0
400
2度もゼロから書き直して、やっとブラウザでぬるぬる動くAIに辿り着いた話
tomoino
0
150
Cloudflare Realtime と Workers でつくるサーバーレス WebRTC
nekoya3
0
390
業務自動化をJavaとSeleniumとAWS Lambdaで実現した方法
greenflagproject
1
100
赤裸々に公開。 TSKaigiのオフシーズン
takezoux2
0
120
セキュリティマネジャー廃止とクラウドネイティブ型サンドボックス活用
kazumura
1
160
Go1.25からのGOMAXPROCS
kuro_kurorrr
0
110
Featured
See All Featured
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
smashingmag
252
21k
The World Runs on Bad Software
bkeepers
PRO
68
11k
Documentation Writing (for coders)
carmenintech
71
4.9k
Testing 201, or: Great Expectations
jmmastey
42
7.5k
The Invisible Side of Design
smashingmag
299
50k
Become a Pro
speakerdeck
PRO
28
5.4k
ReactJS: Keep Simple. Everything can be a component!
pedronauck
667
120k
Side Projects
sachag
454
42k
Keith and Marios Guide to Fast Websites
keithpitt
411
22k
Fireside Chat
paigeccino
37
3.5k
Easily Structure & Communicate Ideas using Wireframe
afnizarnur
194
16k
Optimising Largest Contentful Paint
csswizardry
37
3.3k
Transcript
Automate your Infrastructure with Chef
cjoudrey @
None
c #
c # # # # # # # in minutes
# d # d c # # # # #
d in minutes
w Manual setup takes time
# ruby 1.9.3 # ruby 1.9.2 != and error-prone
# ruby 1.9.3 # ruby 1.9.2 != Oops! and error-prone
What is ?! Chef
1 Manage servers with ruby code
instead of $ ssh root@app1 Last login: Thu Feb 28
... # apt-get install nginx ... # vim /etc/nginx/nginx.conf ... # apt-get install ruby ...
client server
# node # node # node # chef server (server1
to server3.example.com) (chef.example.com) knife ! (local machine)
# node # node # node # chef server (server1
to server3.example.com) (chef.example.com) knife ! (local machine)
# node # node # node # chef server (server1
to server3.example.com) (chef.example.com) knife ! (local machine)
# node # node # node # chef server chef-client
(server1 to server3.example.com) knife ! (local machine)
2terminology Chef
2recipe Ruby file that contains Chef commands
2cookbook Collection of Chef recipes
Getting started with Chef 2
git clone opscode/chef-repo https://github.com/opscode/chef-repo !
! $ ls confoo ... cookbooks/ data_bags/ environments/ roles/
Install Chef on local machine !
! gem install chef
# Hosted* Chef server from Opscode * free up to
5 nodes
#
#
Setup Knife on local machine !
# node # node # node # chef server (server1
to server3.example.com) (chef.example.com) knife ! (local machine)
! $ ls confoo/.chef confoo-demo-validator.pem confoo-demo.pem knife.rb Copy files to
REPO/.chef
! $ cd confoo $ knife user list confoo-demo Test
Knife
8 Create your first cookbook $ cd confoo $ knife
cookbook create nginx
8 $ ls cookbooks/nginx ... attributes/ providers/ recipes/ resources/ templates/
package "nginx" cookbooks/nginx/recipes/default.rb
package installs using system’s package mgr
cookbooks/nginx/recipes/default.rb package "nginx" service "nginx"
service defines an available service
cookbooks/nginx/recipes/default.rb package "nginx" service "nginx" do supports :status => true,
:restart => true, :reload => true end
cookbooks/nginx/recipes/default.rb package "nginx" service "nginx" do supports :status => true,
:restart => true, :reload => true action [:enable, :start] end
:enable start on server boot
:start start when Chef runs
8 Upload cookbook $ knife cookbook upload nginx Uploading nginx
[0.1.0]
Let’s test it on a node #
! $ knife bootstrap \ server1.example.com Bootstrap a node
!
2run list Ordered list of recipes and roles that get
run on the node
! $ knife node edit \ server1.example.com Edit a node
{ "name": "server1.example.com", "run_list": [ ] }
{ "name": "server1.example.com", "run_list": [ "recipe[nginx::default]" ] }
recipe[nginx::default] means default recipe of nginx cookbook
$ ssh server1.example.com server1:~# chef-client Run Chef on the node
#
#
#
# Let’s configure nginx
copy from server to nginx cookbook templates/default/nginx.conf.erb /etc/nginx/nginx.conf !
cookbooks/nginx/recipes/default.rb package "nginx" service "nginx" do supports :status => true,
:restart => true, :reload => true action [:enable, :start] end template "/etc/nginx/nginx.conf" do source "nginx.conf.erb" notifies :reload, "service[nginx]" end
cookbooks/nginx/recipes/default.rb package "nginx" service "nginx" do supports :status => true,
:restart => true, :reload => true action [:enable, :start] end template "/etc/nginx/nginx.conf" do source "nginx.conf.erb" notifies :reload, "service[nginx]" end
cookbooks/nginx/recipes/default.rb package "nginx" service "nginx" do supports :status => true,
:restart => true, :reload => true action [:enable, :start] end template "/etc/nginx/nginx.conf" do source "nginx.conf.erb" notifies :reload, "service[nginx]" end
cookbooks/nginx/recipes/default.rb package "nginx" service "nginx" do supports :status => true,
:restart => true, :reload => true action [:enable, :start] end template "/etc/nginx/nginx.conf" do source "nginx.conf.erb" notifies :reload, "service[nginx]" end
! Upload the cookbook and run chef-client on node
#
2 Chef is idempotent
! What if we edit templates/default/nginx.conf.erb and run Chef
#
#
#
Let’s run Chef one more time #
#
2Attributes
nginx/templates/default/nginx.conf.erb user www-data; worker_processes 2; pid /var/run/nginx.pid; ...
nginx/attributes/nginx.rb default['nginx']['worker_processes'] = 2
nginx/templates/default/nginx.conf.erb user www-data; worker_processes <%= node['nginx'] ['worker_processes'] %>; pid /var/run/nginx.pid;
...
# Override for a specific node
{ "name": "server1.example.com", "run_list": [ "recipe[nginx::default]" ] }
{ "name": "server1.example.com", "normal": { "nginx": { "worker_processes": 4 },
}, "run_list": [ "recipe[nginx::default]" ] }
2Roles
roles/app-server.rb name 'app-server' description 'app-server stuff' run_list( 'recipe[nginx::default]' ) override_attributes(
'nginx' => { 'worker_processes' => 2 } )
! $ knife role from file \ app-server.rb Upload a
role
Apply the role on a node #
{ "name": "server1.example.com", "run_list": [ "role[app-server]" ] }
#
{ "name": "server1.example.com", "run_list": [ "role[base]", "role[app-server]" ] }
2 Environments
environments/production.rb name 'production' cookbook_versions 'nginx' => '= 0.1.0'
{ "name": "server1.example.com", "chef_environment": "production", "run_list": [ "recipe[nginx::default]" ] }
! Searching for nodes $ knife search node \ role:app-server
2
8 Searching can be done in recipes too!
8 Searching can be done in recipes too! OMFG!
backend app balance roundrobin server app1 10.10.0.1 check port 80
server app2 10.10.0.2 check port 80 server app3 10.10.0.3 check port 80
nodes = search( :node, 'role:app-server' ) template "/etc/haproxy.conf" do source
"haproxy.conf.erb" variables :nodes => nodes end
backend www balance roundrobin <% @nodes.each do |n| %> server
<%= n[:hostname] %> <%= n[:ipaddress] %> check port <% end %>
2Goodies
None
None
None
None
None
Automation is important
# staging/CI # production ! development = =
Thanks!
cjoudrey @