scale 10x build a cloud day

Introduction to ChefSCALE Build a Cloud Day

matt@opscode.comwww.opscode.com

@mattray

• U has a cloud

• Now what?

http://www.flickr.com/photos/ian_munroe/4758240536/

Congratulations!!!

APIs are awesome!

• You can provision compute resources in seconds

• You can provision storage resources in seconds

• That’s cool.

http://www.flickr.com/photos/jdhancock/3634246981/

Chef can help with that

• knife ec2 server create

• knife rackspace server create

• knife terremark server create

• knife voxel server create

• knife gandi server create

• knife cloudstack server create

• knife kvm server create

• knife vsphere server create

• knife eucalyptus server create

• knife openstack server create

http://www.flickr.com/photos/kyz/3122499444/

But then what?

http://www.flickr.com/photos/doctorow/2698336843

You need to configure them

See Node

Application Server

See Nodes

Application Server

Application Database

See Nodes Grow

Application Server

Application Databases

Application Servers

Application Databases

See Nodes Grow

Application Servers

Application Databases

Load Balancer

See Nodes Grow

See Nodes Grow

Application Servers

Application Databases

Load Balancers

See Nodes Grow

Application Servers

Application Database Cache

Load Balancers

Application Databases

Tied together with Config

Application Servers

Application Database Cache

Load Balancers

Application Databases

Infrastructure is a Snowflake

Application Servers

Application Database Cache

Load Balancers

Floating IP?

Application Databases

Evolving Complexity

Load Balancers

Application Servers

NoSQL

Database Slaves

ApplicationCache

Database Cache

Database

Complexity Grows Quickly

DC1

DC3

DC2

http://www.flickr.com/photos/16339684@N00/2681435235/

And it Continues to Evolve

Golden Images are not the answer

• Gold is heavy

• Hard to transport

• Hard to mold

• Easy to lose configuration detail

http://www.flickr.com/photos/garysoup/2977173063/

Jboss App

Memcache

Postgres Slaves

Postgres Master

NagiosGraphite

Typical Boring Infrastructure

• Move SSH off port 22

• Lets put it on 2022

Jboss App

Memcache

Postgres Slaves

Postgres Master

NagiosGraphite

New Compliance Mandate

Jboss App

Memcache

Postgres Slaves

Postgres Master

NagiosGraphite 1 2

3

4

5

6

• edit /etc/ssh/sshd_config

6 Golden Image Updates

• Delete, launch

• Repeat

• Typically manually

8

Jboss App

Memcache

Postgres Slaves

Postgres Master

NagiosGraphite 1 2

3 4 5 6 7

9

10 11

12

12 Instance Replacements

5

Jboss App

Memcache

Postgres Slaves

Postgres Master

NagiosGraphite 1 2

4 5 6 7

8 9

10 11

12

3

• Don't break anything!

In a Maintenance Window

Jboss App

Memcache

Postgres Slaves

Postgres Master

NagiosGraphite

• Invalid Configs

• Bob just got fired :(

With Different IP Addresses?

http://www.flickr.com/photos/francoforeshock/5716969942/

Configuration Desperation

Configuration Management and Automated Systems Integration

is the Answer

http://www.flickr.com/photos/philliecasablanca/3354734116/

Chef Solves This Problem

• But you already guessed that, didn’t you?

Collections of Resources

• Networking

• Files

• Directories

• Symlinks

• Mounts

• Routes

• Users

• Groups

• Tasks

• Packages

• Software

• Services

• Configurations

• Other Stuffhttp://www.flickr.com/photos/stevekeys/3123167585/

http://www.flickr.com/photos/glowjangles/4081048126/

Acting in Concert

http://www.flickr.com/photos/28309157@N08/3743455858/

To Provide a Service

Chef is Infrastructure as Code

http://www.flickr.com/photos/louisb/4555295187/

• Programmatically provision and configure

• Treat like any other code base

• Reconstruct business from code repository, data backup, and bare metal resources.

Declarative Interface to Resources

• Define policy

• Say what, not how

• Pull not Push

http://www.flickr.com/photos/bixentro/2591838509/

That looks like this

extra_packages = case node['platform'] when "ubuntu","debian" %w{ ruby1.8 ruby1.8-dev rdoc1.8 ri1.8 libopenssl-ruby } endextra_packages.each do |pkg| package pkg do action :install endend

Or thissearch(:users, '*:*') do |u| user u['id'] do uid u['uid'] shell u['shell'] home "/home/#{u['id']}" end directory "#{home_dir}/.ssh" do

owner u['id'] group u['gid'] mode "0700" end template "#{home_dir}/.ssh/authorized_keys" do source "authorized_keys.erb" owner u['id'] group u['id'] mode "0600" variables :ssh_keys => u['ssh_keys']

endend

Recipes and Cookbooks

• Recipes are collections of Resources

• Cookbooks contain recipes, templates, files, custom resources, etc

• Code re-use and modularity

• Hundreds already on Community.opscode.com

http://www.flickr.com/photos/shutterhacks/4474421855/

• Chef-Client generates configurations directly on nodes

• Reduce management complexity through abstraction

• Store the configuration of your programs in version control

http://www.flickr.com/photos/ssoosay/5126146763/

Nodes

Upload your infrastructureknife cookbook upload apt

knife cookbook upload chef-client

knife cookbook upload java

knife cookbook upload jpackage

knife cookbook upload ntp

knife cookbook upload sudo

knife cookbook upload tomcat

knife cookbook upload users

knife cookbook upload sample

knife role from file base-cloud.rb

knife role from file tc.rb

knife role from file sample.rb

knife data bag create users

knife data bag from file users mray.json

Build it somewhere

#EC2knife ec2 server create -S mray -i ~/.ssh/mray.pem -x ubuntu -G default -I ami-a7a97dce -f m1.small -d omnibus -r 'role[base-cloud],role[tc],role[sample]'

#Rackspaceknife rackspace server create --image 110 --flavor 2 -i ~/.ssh/mray.pem -d omnibus -r 'role[base-cloud],role[tc],role[sample]'

#CloudStackknife cs server create -S "small instance" -T "CentOS 5.5(64-bit) no GUI (KVM)" -i ~/.ssh/mray.pem -d omnibus -r 'role[base-cloud],role[tc],role[sample]'

#Ubuntu Linuxknife bootstrap test.lab -r 'role[webserver]' -i ~/.ssh/mray.pem -x ubuntu --sudo -d omnibus -r 'role[base-cloud],role[tc],role[sample]'

http://www.flickr.com/photos/kathycsus/2686772625

Search

• IP addresses

• Hostnames

• FQDNs

• Search for nodes with Roles

• Find configuration data

pool_members = search("node","role:webserver”)

template "/etc/haproxy/haproxy.cfg" do source "haproxy-app_lb.cfg.erb" owner "root" group "root" mode 0644 variables :pool_members => pool_members.uniq notifies :restart, "service[haproxy]"end

Pass results into Templates

# Set up application listeners here.listen application 0.0.0.0:80 balance roundrobin <% @pool_members.each do |member| -%> server <%= member[:hostname] %> <%= member[:ipaddress] %>:> weight 1 maxconn 1 check <% end -%><% if node["haproxy"]["enable_admin"] -%>listen admin 0.0.0.0:22002 mode http stats uri /<% end -%>

Pass results into Templates

Jboss App

Memcache

Postgres Slaves

Postgres Master

So when this

NagiosGraphite

Jboss App

Memcache

Postgres Slaves

Postgres Master

NagiosGraphite

Becomes this

Jboss App

Memcache

Postgres Slaves

Postgres Master

NagiosGraphite

Updates can be automatic

NagiosGraphite

Count the resources

Jboss App

Memcache

Postgres Slaves

• Load balancer config

• Nagios host ping

• Nagios host ssh

• Nagios host HTTP

• Nagios host app health

• Graphite CPU

• Graphite Memory

• Graphite Disk

• Graphite SNMP

• Memcache firewall

• Postgres firewall

• Postgres authZ config

• 12+ resource changes for 1 node addition

http://www.flickr.com/photos/evelynishere/2798236471/

CLONING CANNOT COPE WITH THIS

• Chef can.

Build anything

• Simple internal applications

• Complex external applications

• Workstations

• Hadoop clusters

• IaaS infrastructure

• PaaS infrastructure

• SaaS applications

• Storage systems

• You name it

http://www.flickr.com/photos/hyku/245010680/

And manage it simply

http://www.flickr.com/photos/helico/404640681/

• Automatically reconfigure everything

• Linux, Windows, Unixes, BSDs

• Load balancers

• Metrics collection systems

• Monitoring systems

• Cloud migrations become trivial

The Chef Community

• Apache License, Version 2.0

• 550+ Individual contributors

• 100+ Corporate contributors

• Dell, Rackspace,VMware, RightScale, Heroku, and many more

• Nearly 400 cookbooks

• http://community.opscode.com

Questions?

http://www.flickr.com/photos/mrchippy/443960682/

Questions?

Thanks!

matt@opscode.comwww.opscode.com