Sysops cu Chef

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Istvan Hoka

Tecnologia

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

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

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

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

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

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)

Chef Server
• HTTP API
‣ knife

‣ chef-solo
• CouchDB
‣ cookbooks: libraries, attributes, deﬁnitions, recipes
‣ nodes
‣ roles

‣ data bags
• RabbitMQ
• Solr
• Web UI

chef-client run
• Convergence

‣ Build, Register, and Authenticate the Node

‣ Synchronize Cookbooks

• Compile

‣ Assemble Libraries, Attributes, Deﬁnitions, Recipes

• Execute

‣ Converge

‣ Save node

‣ Run notiﬁcations

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

Chef “Hello World”?

• Chef Server
• Chef client
• Chef workstation

Chef Hello World

1. Hosted Chef + AWS EC2
2. Virtualization

Vagrant

• Oracle VirtualBox - virtualbox.org
• Chef Solo

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

Vagrant
Apache
MySQL
Memcache
Redis

`pwd` /vagrant

Guest OS (VirtualBox): Linux

Host OS: Windows, OSX, Linux

Cookbooks
• https://github.com/opscode-
cookbooks

• https://github.com/37signals/
37s_cookbooks

• https://github.com/engineyard/ey-
cloud-recipes

• https://github.com/cookbooks

Vagrant

• Web dev pe Linux de pe Windows,
OSX

• Izolare
• Conﬁguratie repetabila

Chef

• Infrastructura ca si cod
• Conﬁguratie repetabila
• Scalabil

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Sysops cu Chef

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

10.

11. Jackpot!

12.

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

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