Presentation given by Scott Russel, Devops Evangelist at CHEF, during the Open Source Cloud Day of Kangaroot & Red Hat.

1. Agenda
• Overview
• Chef Software Platform
• Building Blocks
• Automation Patterns

2. Overview
• Chef is an automation framework that enables Infrastructure as Code
• Chef leverages reusable definitions to automate desired state
• Chef is API driven
• Chef supports Linux variants, Unix variants, AIX and Windows, all as first class
citizens.

3. The Chef Software Platform
Chef
Development Kit
Cookbook and
Policy Authoring
Test-Driven
Infrastructure
Chef Server
Management
Console
Analytics
Platform
High Availability
and Replication
Data
Center
Chef
Client
Nodes
The
Cloud

4. Building Blocks
Cookbooks
Recipes
Resources

5. Building Blocks: What is a Resource?
• A Resource is a system state you define
• Example: Package installed, state of a service, configuration file existing
• You declare what state you want the resource in.
• Chef automatically determines HOW that state is achieved
On Linux based OSes: On Windows based OSes:

6. Building Blocks: What is a Recipe?
• A recipe is a collection of Resources
• Resources are executed in the order they are listed.
On Linux based OSes: On Windows based OSes:

7. Building Blocks: What is a Cookbook?
• A cookbook is a set of recipes
• A cookbook is a defined set of items
and different outcomes that you expect
to address
• A cookbook could have a recipe to install
apache2/httpd but also another set of recipes
to activate modules required.

8. Environments
Building Blocks
Roles
Cookbooks
Recipes
Resources

9. Building Blocks: What is a role?
• Define reusable roles for Infrastructure Code
chef_type:
role
default_attributes:
my-­‐app:
application:
package:
mysite-­‐A.tar.gz
package_sum:
73e5cf3287e4d903d3828da5be1ab228ea33152447551b4e489e659268f643b2
package_url:
http://demo-­‐framework.s3.amazonaws.com/mysite-­‐A.tar.gz
description:
Role
for
a
myapp
webserver
env_run_lists:
json_class:
Chef::Role
name:
myapp_A_webserver
override_attributes:
run_list:
recipe[my-­‐app::application]
recipe[my-­‐app::webserver]

10. Building Blocks: What is an Environment?
• Define a reusable environments for Infrastructure Code
chef_type:
environment
cookbook_versions:
database:
2.2.0
default_attributes:
myapp:
version:
1.2.3
description:
for
development
nodes
json_class:
Chef::Environment
name:
development
override_attributes:

11. Building Blocks
Data_Bags Environments
Roles
Cookbooks
Recipes
Resources

12. Building Blocks: What is a Data_Bag?
• Define global variables accessible to all the things
deploy_key:
cipher:
aes-­‐256-­‐cbc
encrypted_data:
lIpW3sqd69wXt7+MB+uGXr0GfcrEf6rOnHLMA7H00ZCbTxMcEypguGD22w23
qzEZSzCf2ahv67CtcfrDGvUoWS57Gp5/QoR4WBYKQQUplY0LPtXMZFDISCLU
a0aNhrzrXhT9eDKNpru7hpuEkOZPRNstx1121bdMZ9lm1/6BPBeIWUYrxAeS
.
.
.
.
.
.
.
.
.
.
.
.
.
.
iv:
tpz6zFz9xkscoi36kRw4JQ==
version:
1
id:
jenkins_ssh_key

13. Automation Patterns
IT
Automation
Click to
Compute
CI/CD

15. Additional Resources
http://learn.chef.io/
getchef.com
docs.opscode.com
Email info@getchef.com
Twitter @Chef
Install Chef
http://getchef.com/chef/install
Chef Cookbooks
supermarket.getchef.com
Chefdk - Chef Development Kit
https://downloads.getchef.com/chef-dk/
YouTube
youtube.com/getchef
Community Site
community.opscode.com
Freenode IRC
#chef, #chef-hacking, #openstack-chef

16. Thank You – Questions?