Talk given at the RedDotRubyConf in Singapore on April 22, 2011 http://reddotrubyconf.com/

1. INFRASTRUCTURE AS CODE
Managing System Complexity with Chef
Robert J. Berger - CTO Runa, Inc.
rberger@runa.com http:/ /blog.ibd.com
Friday, April 22, 2011 1
Image: http://techcrunch.com/2010/03/16/big-data-freedom/

2. MOORE’S LAW
Friday, April 22, 2011 2
Graph: http://www.gotw.ca/publications/concurrency-ddj.htm

3. MOORE’S LAW
HITS A
SPEED
BUMP
CPU speed
growth
has
STOPPED
Friday, April 22, 2011 2
Graph: http://www.gotw.ca/publications/concurrency-ddj.htm

4. BUT WE GET:
GROWTH OF CORES &
FOOTBALL FIELDS OF SERVERS
Friday, April 22, 2011 3
Data Center Image: http://www.datacenterknowledge.com/inside-microsofts-dublin-mega-data-center/
Chart: http://news.cnet.com/8301-13924_3-10101987-64.html

5. BUT WE GET:
GROWTH OF CORES &
FOOTBALL FIELDS OF SERVERS
Friday, April 22, 2011 3
Data Center Image: http://www.datacenterknowledge.com/inside-microsofts-dublin-mega-data-center/
Chart: http://news.cnet.com/8301-13924_3-10101987-64.html

6. VON NEUMANN SEQUENTIAL
TRANSFORMS TO...
Friday, April 22, 2011 4
Image: http://www.necessarysufficient.com

7. ACTORS,
Friday, April 22, 2011 5
Carl Hewitt Image: http://people.csail.mit.edu/psz/LCS-75/languages.html
Map Reduce Diagram: http://horicky.blogspot.com/2008/11/hadoop-mapreduce-implementation.html
Nanites: http://www.startrek.com/database_article/nanites
Runa Infrastructure Diagram: Robert J. Berger

8. Hadoop / HBase Cheshire / Swarmiji
Map / Reduce
Petabyte Store
Dynamic Monitor & HTTP
Runtime Recovery Dispatchers
HBase HBase
HBase
HBase HBase
HBase
HBase HBase
HBase Redis
HBase HBase
HBase HBase
HBase
HBase Redis
Mem
HBase HBase
HBase Redis
Mem
CacheRedis
Queue
HBase HBase
HBase Mem
CacheRedis
HBase HBase
HBase HBase
HBase
HBase Mem
Cache
HBase HBase
HBase Mem
Cache
HBase HBase
HBase Cache
HBase HBase
HBase
Shared
Reporting Analytics Data
Session
Collectors
Memory
ACTORS, MAP/REDUCE,
NANITE... PARALLELISM!
Friday, April 22, 2011 5
Carl Hewitt Image: http://people.csail.mit.edu/psz/LCS-75/languages.html
Map Reduce Diagram: http://horicky.blogspot.com/2008/11/hadoop-mapreduce-implementation.html
Nanites: http://www.startrek.com/database_article/nanites
Runa Infrastructure Diagram: Robert J. Berger

9. COMPLEXITY EXPLOSION
Friday, April 22, 2011 6
Complexity Background: http://www.c0d3m0nk3y.com/gallery/

10. COMPLEXITY EXPLOSION
Lots of moving heterogeneous parts
Not just in the LAMP stack
Auto scaling
Horizontal scaling
Clouds
Monitoring & Management
Friday, April 22, 2011 6
Complexity Background: http://www.c0d3m0nk3y.com/gallery/

11. CODE YOUR
INFRASTRUCTURE
Friday, April 22, 2011 7
Background: http://www.flickr.com/photos/jason-samfield/4398151919/

12. CODE YOUR
INFRASTRUCTURE
Programming is all about managing complexity
Apply same techniques to complexity of infrastructure
Revision control
Keep it DRY
Build on the shoulders of others
Friday, April 22, 2011 7
Background: http://www.flickr.com/photos/jason-samfield/4398151919/

13. CHEF: THE RUBY WAY TO
MANAGE INFRASTRUCTURE
Plain Old Ruby programming
External DSL adds language constructs for service
deployment
Services to support Configuration Management
Community Cookbooks
Friday, April 22, 2011 8
Background Image: http://www.flickr.com/photos/steveritchie/3779779586/

14. CHEF: THE RUBY WAY TO
MANAGE INFRASTRUCTURE
Plain Old Ruby programming
External DSL adds language constructs for service
deployment
Services to support Configuration Management
Community Cookbooks
ENABLES YOU TO CODE YOUR INFRASTRUCTURE
Friday, April 22, 2011 8
Background Image: http://www.flickr.com/photos/steveritchie/3779779586/

15. WHAT’S IN THE KITCHEN
Chef Server
Authoritative
Chef-Client
Chef-Client
Chef-Client
Data bags
Roles
Cookbooks
Node states Remote
Deployed Infrastructure Repo
Local Project Repo of Cookbooks
Do your cooking (editing)
Chef Knife client
Push Data Bags, Roles, Cookbooks
PowerBook G4
Launch/Bootstrap instances
Your Dev Environment
Friday, April 22, 2011 9

16. CHEF SERVER
• Manage & Authenticate • Support search on Data
clients (nodes, dev, Bags, Roles and Node
admin) states.
• Assign roles & • Serve a RESTful API for
Configurations to nodes humans and machines
• Track states of Nodes • Can run your own or use
Opscode Platform
Friday, April 22, 2011 10

17. PROJECT REPO
Data Bags Cookbooks
-App Level -"Standards" from
Attributes cookbooks.Opscode.com
Roles Site-Cookbooks
-A Nodes Purpose -Your own cookbooks
Environments -Over-rides of
-Staging, Production PowerBook G4
Standard Cookbooks
-New in 0.10.x
Friday, April 22, 2011 11

18. COOKBOOKS
Attributes Recipes
-Key-Value pairs -Where the Action is
associated with a node -Specifies resources
-Hierarchy of overrides that the chef client
Files should take action on
-Static Files to be Templates
copied to node -ERB files to build
Library config files on node
-Place to DRY up Ruby Providers / Resources
code used in Recipes -DIY DSL Extensions
Friday, April 22, 2011 12
You only need Recipes. Most cookbooks are just Recipe[s] and Templates
Background: Clipart Library

19. PLETHORA OF EXISTING
COOKBOOKS
Friday, April 22, 2011 13
These are the ones that Opscode has in their “official” repo. I always search on Github for others before I write one

20. PLETHORA OF EXISTING
COOKBOOKS
activemq erlang maven pxe_dust stompserver
ant fail2ban memcached python subversion
apache2 gems mercurial quick_start sudo
apparmor git munin rabbitmq teamspeak
application glassfish mysql rabbitmq_chef teamspeak3
apt gnu_parallel nagios radiant thrift
aws god nanite rails tmux
bluepill gunicorn nginx rails_enterprise tomcat
boost hadoop nscd redmine tomcat6
build-essential haproxy ntp reprepro trac
capistrano heartbeat ohai resolver transmission
chef imagemagick one-shot riak ubuntu
chef-client instiki openldap rsync ucspi-tcp
cloudkick iptables openssh rsyslog unicorn
couchdb java openssl ruby users
cron java_sun openvpn ruby_enterprise varnish
daemontools jetty ossec rubygems vim
database jira packages runit wordpress
django jpackage pacman rush xfs
djbdns keepalived passenger_apache2 samba xml
dmg kickstart passenger_enterprise sbuild zenoss
drbd logrotate pdns screen zlib
dynect logwatch perl snort zsh
dynomite lvm php solr
ec2 man postfix sqlite
emacs maradns postgresql ssh_known_hosts
Friday, April 22, 2011 13
These are the ones that Opscode has in their “official” repo. I always search on Github for others before I write one

21. MOST IMPORTANT WIKI PAGE
WIKI.OPSCODE.COM/DISPLAY/CHEF/RESOURCES
Friday, April 22, 2011 14
Whole range of Directives. Everything from copying files from file systems, URLs, etc
to deploy from Git/SVN... Similar to Capistrano. But its pull instead of push

22. MOST IMPORTANT WIKI PAGE
WIKI.OPSCODE.COM/DISPLAY/CHEF/RESOURCES
Chef
DSL
Directives
Friday, April 22, 2011 14
Whole range of Directives. Everything from copying files from file systems, URLs, etc
to deploy from Git/SVN... Similar to Capistrano. But its pull instead of push

23. A SIMPLE COOKBOOK:
RABBITMQ
Friday, April 22, 2011 15

24. RECIPES:
default.rb
package "rabbitmq-server" do
action :install
end
service "rabbitmq-server" do
supports :status => true, :restart => true, :reload => true
action [ :enable, :start ]
end
Friday, April 22, 2011 16

25. RECIPES:
default.rb
Install Packages
(Knows about many package formats)
package "rabbitmq-server" do
action :install
end
service "rabbitmq-server" do
supports :status => true, :restart => true, :reload => true
action [ :enable, :start ]
end
Friday, April 22, 2011 16

26. RECIPES:
default.rb
package "rabbitmq-server" do
action :install
end
service "rabbitmq-server" do
supports :status => true, :restart => true, :reload => true
action [ :enable, :start ]
end
Defines a service that other
recipes can trigger
(Knows about many init style mechanism)
Friday, April 22, 2011 16

27. RECIPES: default.rb pt 2
case node[:platform]
when "ubuntu"
template "/etc/rabbitmq/rabbitmq.conf" do
source "rabbitmq.config.erb"
owner "root"
group "root"
mode 0644
notifies :restart, resources(:service => "rabbitmq-server")
end
else
template "/etc/rabbitmq/rabbitmq.config" do
source "rabbitmq.config.erb"
owner "root"
group "root"
mode 0644
notifies :restart, resources(:service => "rabbitmq-server")
end
end
Friday, April 22, 2011 17
ERB: Embedded Ruby

28. RECIPES: default.rb pt 2
Tweak based on target OS
(Its just Ruby!)
case node[:platform]
when "ubuntu"
template "/etc/rabbitmq/rabbitmq.conf" do
source "rabbitmq.config.erb"
owner "root"
group "root"
mode 0644
notifies :restart, resources(:service => "rabbitmq-server")
end
else
template "/etc/rabbitmq/rabbitmq.config" do
source "rabbitmq.config.erb"
owner "root"
group "root"
mode 0644
notifies :restart, resources(:service => "rabbitmq-server")
end
end
Friday, April 22, 2011 17
ERB: Embedded Ruby

29. RECIPES: default.rb pt 2
Chefisms tend to be blocks with
case node[:platform]
when "ubuntu" optional parameters
template "/etc/rabbitmq/rabbitmq.conf" do
source "rabbitmq.config.erb"
owner "root"
group "root"
mode 0644
notifies :restart, resources(:service => "rabbitmq-server")
end
else
template "/etc/rabbitmq/rabbitmq.config" do
source "rabbitmq.config.erb"
owner "root"
group "root"
mode 0644
notifies :restart, resources(:service => "rabbitmq-server")
end
end
Friday, April 22, 2011 17
ERB: Embedded Ruby

30. RECIPES: default.rb pt 2
case node[:platform]
when "ubuntu"
template "/etc/rabbitmq/rabbitmq.conf" do
source "rabbitmq.config.erb"
owner "root" Creates files using ERB
group "root"
mode 0644
(ERB Params could be set here)
notifies :restart, resources(:service => "rabbitmq-server")
end
else
template "/etc/rabbitmq/rabbitmq.config" do
source "rabbitmq.config.erb"
owner "root"
group "root"
mode 0644
notifies :restart, resources(:service => "rabbitmq-server")
end
end
Friday, April 22, 2011 17
ERB: Embedded Ruby

31. RECIPES: default.rb pt 2
case node[:platform]
when "ubuntu"
template "/etc/rabbitmq/rabbitmq.conf" do
source "rabbitmq.config.erb"
owner "root"
group "root"
mode 0644
notifies :restart, resources(:service => "rabbitmq-server")
end
else Using the service defined
template "/etc/rabbitmq/rabbitmq.config" do
source "rabbitmq.config.erb" earlier
owner "root"
group "root"
mode 0644
notifies :restart, resources(:service => "rabbitmq-server")
end
end
Friday, April 22, 2011 17
ERB: Embedded Ruby

32. ATTRIBUTES:
default.rb
default[:rabbitmq][:nodename] = "rabbit"
default[:rabbitmq][:address] = "0.0.0.0"
default[:rabbitmq][:port] = "5672"
default[:rabbitmq][:erl_args] = "+K true +A 30
-kernel inet_default_listen_options [{nodelay,true},{sndbuf,16384},{recbuf,4096}]
-kernel inet_default_connect_options [{nodelay,true}]"
default[:rabbitmq][:start_args] = ""
default[:rabbitmq][:logdir] = "/var/log/rabbitmq"
default[:rabbitmq][:mnesiadir] = "/var/lib/rabbitmq/mnesia"
default[:rabbitmq][:cluster] = "no"
default[:rabbitmq][:cluster_config] = "/etc/rabbitmq/rabbitmq_cluster.config"
default[:rabbitmq][:cluster_disk_nodes] = []
Friday, April 22, 2011 18

33. ATTRIBUTES:
default.rb
Sets the default value
default[:rabbitmq][:nodename] = "rabbit"
default[:rabbitmq][:address] = "0.0.0.0"
default[:rabbitmq][:port] = "5672"
default[:rabbitmq][:erl_args] = "+K true +A 30
-kernel inet_default_listen_options [{nodelay,true},{sndbuf,16384},{recbuf,4096}]
-kernel inet_default_connect_options [{nodelay,true}]"
default[:rabbitmq][:start_args] = ""
default[:rabbitmq][:logdir] = "/var/log/rabbitmq"
default[:rabbitmq][:mnesiadir] = "/var/lib/rabbitmq/mnesia"
default[:rabbitmq][:cluster] = "no"
default[:rabbitmq][:cluster_config] = "/etc/rabbitmq/rabbitmq_cluster.config"
default[:rabbitmq][:cluster_disk_nodes] = []
Friday, April 22, 2011 18

34. ATTRIBUTES:
default.rb
Precedence
-default
-set
default[:rabbitmq][:nodename] = "rabbit"
-override
default[:rabbitmq][:address] = "0.0.0.0" -File type
default[:rabbitmq][:port] = "5672"
default[:rabbitmq][:erl_args] = "+K true +A 30
-kernel inet_default_listen_options [{nodelay,true},{sndbuf,16384},{recbuf,4096}]
-kernel inet_default_connect_options [{nodelay,true}]"
default[:rabbitmq][:start_args] = ""
default[:rabbitmq][:logdir] = "/var/log/rabbitmq"
default[:rabbitmq][:mnesiadir] = "/var/lib/rabbitmq/mnesia"
default[:rabbitmq][:cluster] = "no"
default[:rabbitmq][:cluster_config] = "/etc/rabbitmq/rabbitmq_cluster.config"
default[:rabbitmq][:cluster_disk_nodes] = []
Friday, April 22, 2011 18

35. ATTRIBUTES:
default.rb
Automatic
Ohai discovers OS & HW
instance attributes at runtime
default[:rabbitmq][:nodename] = "rabbit"
default[:rabbitmq][:address] = "0.0.0.0"
default[:rabbitmq][:port] = "5672"
default[:rabbitmq][:erl_args] = "+K true +A 30
-kernel inet_default_listen_options [{nodelay,true},{sndbuf,16384},{recbuf,4096}]
-kernel inet_default_connect_options [{nodelay,true}]"
default[:rabbitmq][:start_args] = ""
default[:rabbitmq][:logdir] = "/var/log/rabbitmq"
default[:rabbitmq][:mnesiadir] = "/var/lib/rabbitmq/mnesia"
default[:rabbitmq][:cluster] = "no"
default[:rabbitmq][:cluster_config] = "/etc/rabbitmq/rabbitmq_cluster.config"
default[:rabbitmq][:cluster_disk_nodes] = []
Friday, April 22, 2011 18

36. Templates:
rabbitmq.config.erb
NODENAME=<%= node[:rabbitmq][:nodename] %>
NODE_IP_ADDRESS=<%= node[:rabbitmq][:address] %>
NODE_PORT=<%= node[:rabbitmq][:port] %>
SERVER_ERL_ARGS=<%= node[:rabbitmq][:erl_args] %>
CLUSTER_CONFIG_FILE=<%= node[:rabbitmq][:cluster_config] %>
LOG_BASE=<%= node[:rabbitmq][:logdir] %>
MNESIA_BASE=<%= node[:rabbitmq][:mnesiadir] %>
SERVER_START_ARGS=<%= node[:rabbitmq][:start_args] %>
Friday, April 22, 2011 19

37. Templates:
rabbitmq.config.erb
Creates configuration files using attributes
NODENAME=<%= node[:rabbitmq][:nodename] %>
NODE_IP_ADDRESS=<%= node[:rabbitmq][:address] %>
NODE_PORT=<%= node[:rabbitmq][:port] %>
SERVER_ERL_ARGS=<%= node[:rabbitmq][:erl_args] %>
CLUSTER_CONFIG_FILE=<%= node[:rabbitmq][:cluster_config] %>
LOG_BASE=<%= node[:rabbitmq][:logdir] %>
MNESIA_BASE=<%= node[:rabbitmq][:mnesiadir] %>
SERVER_START_ARGS=<%= node[:rabbitmq][:start_args] %>
Friday, April 22, 2011 19

38. Templates:
rabbitmq.config.erb
node object created when chef-client runs
(attribute precedence resolved)
NODENAME=<%= node[:rabbitmq][:nodename] %>
NODE_IP_ADDRESS=<%= node[:rabbitmq][:address] %>
NODE_PORT=<%= node[:rabbitmq][:port] %>
SERVER_ERL_ARGS=<%= node[:rabbitmq][:erl_args] %>
CLUSTER_CONFIG_FILE=<%= node[:rabbitmq][:cluster_config] %>
LOG_BASE=<%= node[:rabbitmq][:logdir] %>
MNESIA_BASE=<%= node[:rabbitmq][:mnesiadir] %>
SERVER_START_ARGS=<%= node[:rabbitmq][:start_args] %>
Friday, April 22, 2011 19

39. Templates:
rabbitmq.config.erb
Final File is rendered and copied to location
specified by the Template Directive
NODENAME=rabbit
NODE_IP_ADDRESS=0.0.0.0
NODE_PORT=5672
SERVER_ERL_ARGS=+K true +A 30 -kernel inet_default_listen_options
[{nodelay,true},{sndbuf,16384},{recbuf,4096}] -kernel
inet_default_connect_options [{nodelay,true}]
CLUSTER_CONFIG_FILE=/etc/rabbitmq/rabbitmq_cluster.config
LOG_BASE=/var/log/rabbitmq
MNESIA_BASE=/var/lib/rabbitmq/mnesia
SERVER_START_ARGS=
Friday, April 22, 2011 19

40. ROLE: rabbitmq.rb
name "rabbitmq"
description "Deploy rabbitmq instance"
recipes "ulimits", "rabbitmq::default"
override_attributes({
:rabbitmq => {
:port => "8888"
},
"ulimits_list" => [
{
:domain => "rabbitmq",
:type => "soft",
:item => "nofile",
:value => 32768
}
]
})
Friday, April 22, 2011 20

41. ROLE: rabbitmq.rb
name "rabbitmq"
Specify recipes needed
description "Deploy rabbitmq instance"
recipes "ulimits", "rabbitmq::default"
override_attributes({
:rabbitmq => {
:port => "8888"
},
"ulimits_list" => [
{
:domain => "rabbitmq",
:type => "soft",
:item => "nofile",
:value => 32768
}
]
})
Friday, April 22, 2011 20

42. ROLE: rabbitmq.rb
name "rabbitmq"
description "Deploy rabbitmq instance"
recipes "ulimits", "rabbitmq::default"
override_attributes({
:rabbitmq => {
:port => "8888" Attribute Overrides
},
"ulimits_list" => [
{
:domain => "rabbitmq",
:type => "soft",
:item => "nofile",
:value => 32768
}
]
})
Friday, April 22, 2011 20

43. A TASTE OF A SPICIER COOKBOOK:
APPLICATION/
DATABASE
Friday, April 22, 2011 21
Just touch on the most powerful Cookbook pair
Can use the same scafolding for many applications
Image: http://www.theepochtimes.com/n2/content/view/46924/

44. DATA BAG DRIVEN:
MAP RECIPES TO ROLES IN BAG
{
"id": "my_app",
"server_roles": [
"my_app"
],
"type": {
"my_app": [
"rails",
"postfix",
"unicorn"
]
}, ...
Friday, April 22, 2011 22
Snippet of a JSON representation of a Data Bag

45. DATA BAG DRIVEN:
MAP RECIPES TO ROLES IN BAG
{
"id": "my_app",
Application specific role(s),
"server_roles": [ typically the name of the app
"my_app"
],
"type": {
"my_app": [
"rails",
"postfix",
"unicorn"
]
}, ...
Friday, April 22, 2011 22
Snippet of a JSON representation of a Data Bag

46. DATA BAG DRIVEN:
MAP RECIPES TO ROLES IN BAG
{
"id": "my_app",
"server_roles": [
"my_app"
],
"type": {
"my_app": [
"rails",
Recipes in application
"postfix", cookbook to run for this role
"unicorn"
]
}, ...
Friday, April 22, 2011 22
Snippet of a JSON representation of a Data Bag

47. DEFAULT RECIPE:
search(:apps) do |app|
(app["server_roles"] &
node.run_list.roles).each do |app_role|
app["type"][app_role].each do |thing|
node.run_state[:current_app] = app
include_recipe "application::#{thing}"
end
end
end
node.run_state.delete(:current_app)
Friday, April 22, 2011 23
This happens when chef-client runs on an instance and node has all resolved attributes
Node may have one role or many roles.
For instance having the web server, rails app and db roles on one server.

48. DEFAULT RECIPE:
ITS KIND OF META
search(:apps) do |app|
(app["server_roles"] &
node.run_list.roles).each do |app_role|
app["type"][app_role].each do |thing|
node.run_state[:current_app] = app
include_recipe "application::#{thing}"
end
end
end
node.run_state.delete(:current_app)
Friday, April 22, 2011 23
This happens when chef-client runs on an instance and node has all resolved attributes
Node may have one role or many roles.
For instance having the web server, rails app and db roles on one server.

49. DEFAULT RECIPE:
EXECUTES ON EACH NODE BY CHEF-CLIENT
Search thru all ‘apps’ databag
search(:apps) do |app|
(app["server_roles"] &
node.run_list.roles).each do |app_role|
app["type"][app_role].each do |thing|
node.run_state[:current_app] = app
include_recipe "application::#{thing}"
end
end
end
node.run_state.delete(:current_app)
Friday, April 22, 2011 23
This happens when chef-client runs on an instance and node has all resolved attributes
Node may have one role or many roles.
For instance having the web server, rails app and db roles on one server.

50. DEFAULT RECIPE:
EXECUTES ON EACH NODE BY CHEF-CLIENT
Loop thru roles that
search(:apps) do |app|
(app["server_roles"] &
match running node’s run_list
node.run_list.roles).each do |app_role|
app["type"][app_role].each do |thing|
node.run_state[:current_app] = app
include_recipe "application::#{thing}"
end
end
end
node.run_state.delete(:current_app)
Friday, April 22, 2011 23
This happens when chef-client runs on an instance and node has all resolved attributes
Node may have one role or many roles.
For instance having the web server, rails app and db roles on one server.

51. DEFAULT RECIPE:
EXECUTES ON EACH NODE BY CHEF-CLIENT
search(:apps) do |app|
(app["server_roles"] &
node.run_list.roles).each do |app_role|
app["type"][app_role].each do |thing|
node.run_state[:current_app] = app
include_recipe "application::#{thing}"
end
end Loop thru & run recipes
end
for each role nginx
node.run_state.delete(:current_app) unicorn
rails
postfix
Friday, April 22, 2011 23
This happens when chef-client runs on an instance and node has all resolved attributes
Node may have one role or many roles.
For instance having the web server, rails app and db roles on one server.

52. CHEF-CLIENT
(RUNTIME)
Friday, April 22, 2011 24

53. CHEF-CLIENT
(RUNTIME)
• All work done by client on instances (not server)
• Runs on each instance regularly (every 1/2 by default)
• Roles, Cookbook, Data Bag, Attribute changes
propagate from Chef Server to instances via the
chef-client
• Client sends attributes to Chef Server making them
searchable
Friday, April 22, 2011 24

54. THE AMAZING KNIFE
CLI for Chef Server
PowerBook G4
Friday, April 22, 2011 25

55. THE AMAZING KNIFE
CLI for Chef Server
Manage Cookbooks Manage Data Bags
-Create Node Mgmt & Status
-Upload Role Management
-Syntax Check Client Management
-Generate Metadata Search
-Access Public -Nodes, Roles, Data
Cookbooks Bags
-Git Vendor Pulls
PowerBook G4
-Publish
Friday, April 22, 2011 25

56. PowerBook G4
Friday, April 22, 2011 26

57. AND THAT’S NOT ALL!
Manage Knife Config Create, List, Delete Cloud
Multi-ssh Instances
-Select by Search - EC2
Bootstrap Servers - Rackspace
-From Bare Basic OS - Slicehost
- Terremark
PowerBook G4
Friday, April 22, 2011 26

58. PUSH YOUR COOKBOOKS
TO THE CHEF SERVER
Friday, April 22, 2011 27

59. PUSH YOUR COOKBOOKS
TO THE CHEF SERVER
knife cookbook upload -a
Pushes all cookbooks in your repo to chef server
Friday, April 22, 2011 27

60. PUSH YOUR ROLES
TO THE CHEF SERVER
Friday, April 22, 2011 28

61. PUSH YOUR ROLES
TO THE CHEF SERVER
knife role from file roles/rabbitmq.rb
Pushes the rabbitmq role to the chef server
Friday, April 22, 2011 28

62. LAUNCH RABBITMQ ON EC2
knife ec2 server create
'role[production]' 'role[base]' role[rabbitmq]'
-S my-aws -I ~/.ssh/my-aws.pem -x ubuntu
-G production,rabbitmq -i ami-88f504e1 -f m1.large
Friday, April 22, 2011 29

63. LAUNCH RABBITMQ ON EC2
Uses Fog to issue EC2 api calls to configure
and create an instance with these parameters
knife ec2 server create
'role[production]' 'role[base]' role[rabbitmq]'
-S my-aws -I ~/.ssh/my-aws.pem -x ubuntu
-G production,rabbitmq -i ami-88f504e1 -f m1.large
Friday, April 22, 2011 29

64. LAUNCH RABBITMQ ON EC2
“Run List” specifies roles for this instance
knife ec2 server create
'role[production]' 'role[base]' role[rabbitmq]'
-S my-aws -I ~/.ssh/my-aws.pem -x ubuntu
-G production,rabbitmq -i ami-88f504e1 -f m1.large
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65. LAUNCH RABBITMQ ON EC2
“Run List” specifies roles for this instance
knife ec2 server create
'role[production]' 'role[base]' role[rabbitmq]'
-S my-aws -I ~/.ssh/my-aws.pem -x ubuntu
-G production,rabbitmq -i ami-88f504e1 -f m1.large
Works with other Clouds:
Rackspace, Terramark, Slicehost, Bluebox
Friday, April 22, 2011 30

66. LIKE BEING AT BENIHANA’S
Friday, April 22, 2011 31
Image: http://ocdeals.ocregister.com/2010/11/01/30-on-your-birthday-at-benihana/73372/benihana/

67. LIKE BEING AT BENIHANA’S
Launches ec2 instance[s] with AMIs you specified
Installs Ruby & packages for building RubyGems
Installs RubyGems from source
Installs Chef from RubyGems
Creates the /etc/chef directory
Writes validation cert to /etc/chef/validation.pem
Writes an /etc/chef/client.rb config file
Writes a JSON file, /etc/chef/first-boot.json with
roles and recipes specified as the run list
Executes chef-client with the first-boot.json,
connecting to the chef server in the client.rb
Friday, April 22, 2011 31
Image: http://ocdeals.ocregister.com/2010/11/01/30-on-your-birthday-at-benihana/73372/benihana/

68. KEEP YOUR INFRASTRUCTURE
UNDER CONTROL WITH CHEF!
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Image: http://forums.brickarms.com/yaf_postst18328_The-Evil-Chefs-Are-Back-and-With-Even-More-Weapons.aspx