1. Sysops cu Chef
infrastructură sub formă de cod
Istvan Hoka
Cluj.rb - clujrb.org
www.zencash.com

2. Intro
1. Chef: ce problema rezolva si cum o
rezolva
2. Un mod usor de a incerca Chef
3. Folosire Chef la infrastructura
pentru inceput

3. Chef
http://www.opscode.com/chef/

4. "An open-source systems
integration framework built
specifically for automating the
cloud."

5. automating the
cloud

6. automating the
cloud
?

8. Rails app
• Nginx • Solr
• Unicorn • Monit
• Rails • Cron
• MySQL • Amazon EC2
• Redis • Ubuntu
• Memcache • Sysadmin: Gigel

9. The Server

11. Jackpot!

13. Mission
accomplished
The Server

14. Scaling

15. Take #2
App DB

16. Scaling!

17. Take #3
Load balancer
App 1 App 2 App 3 App 4
Cache 1 Cache 2
Index 1 DB Master Redis Master
Cache 3
Slave 1 Slave 2 Slave

18. Cum rezolvă Chef
problema?

19. Chef server
Node. Role:
LB
Node. Role: App Node. Role: App Node. Role: App Node. Role: App
Cache 1 Cache 2
Index 1 DB Master Redis Master
Cache 3
Slave 1 Slave 2 Slave

20. Cookbooks
Chef Server
Roles
Data Bags
Cookbooks Nodes
Nodes
Data Bags
Roles
Node
(chef-client)
Commands
Node Node
knife (chef-client) (chef-client)
(chef-client)

21. Chef Server
• HTTP API
‣ knife
‣ chef-solo
• CouchDB
‣ cookbooks: libraries, attributes, definitions, recipes
‣ nodes
‣ roles
‣ data bags
• RabbitMQ
• Solr
• Web UI

22. chef-client run
• Convergence
‣ Build, Register, and Authenticate the Node
‣ Synchronize Cookbooks
• Compile
‣ Assemble Libraries, Attributes, Definitions, Recipes
• Execute
‣ Converge
‣ Save node
‣ Run notifications

23. Cookbooks
• Attributes
• Definitions
• Libraries
• Templates
• Metadata
• Recipes
• Ruby, JSON, ERB

24. Chef “Hello World”?
• Chef Server
• Chef client
• Chef workstation

25. Chef Hello World
1. Hosted Chef + AWS EC2
2. Virtualization

26. Vagrant
http://vagrantup.com/

27. Vagrant
• Oracle VirtualBox - virtualbox.org
• Chef Solo

28. Vagrant setup
1. Install VirtualBox
2. Install Vagrant
3. Setup

29. Vagrantfile

30. Vagrant
Apache
MySQL
Memcache
Redis
`pwd` /vagrant
Guest OS (VirtualBox): Linux
Host OS: Windows, OSX, Linux

31. Cookbooks
• https://github.com/opscode-
cookbooks
• https://github.com/37signals/
37s_cookbooks
• https://github.com/engineyard/ey-
cloud-recipes
• https://github.com/cookbooks

32. Vagrant
• Web dev pe Linux de pe Windows,
OSX
• Izolare
• Configuratie repetabila

33. Chef Solo +
Capistrano

34. Chef
• Infrastructura ca si cod
• Configuratie repetabila
• Scalabil