vBACD - Introduction to Opscode Chef - 2/29

Automating Cloud Deployments with Chef [email_address] www.opscode.com Twitter/IRC/GitHub: mattray

U has a cloud Now what? http://www.flickr.com/photos/ian_munroe/4758240536/ Congratulations!!!

But then what? http://www.flickr.com/photos/doctorow/2698336843

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 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/

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 Application Cache 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/

Typical Boring Infrastructure Jboss App Memcache Postgres Slaves Postgres Master Nagios Graphite

Move SSH off port 22 Lets put it on 2022 New Compliance Mandate Jboss App Memcache Postgres Slaves Postgres Master Nagios Graphite

edit /etc/ssh/sshd_config 6 Golden Image Updates Jboss App Memcache Postgres Slaves Postgres Master Nagios Graphite 1 2 3 4 5 6

Delete, launch Repeat Typically manually 8 12 Instance Replacements Jboss App Memcache Postgres Slaves Postgres Master Nagios Graphite 1 2 3 4 5 6 7 9 10 11 12

Don't break anything! In a Maintenance Window 5 Jboss App Memcache Postgres Slaves Postgres Master Nagios Graphite 1 2 4 5 6 7 8 9 10 11 12 3

Invalid Configs Bob just got fired :( With Different IP Addresses? Jboss App Memcache Postgres Slaves Postgres Master Nagios Graphite

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 Stuff http://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 } end extra_packages.each do |pkg| package pkg do action :install end end

Or this search(: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'] end end

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 from their run list Reduce management complexity through abstraction Store the configuration of your programs in version control http://www.flickr.com/photos/ssoosay/5126146763/ Nodes

Upload your infrastructure 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.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 #EC2 knife ec2 server create -S mray -i ~/.ssh/mray.pem -x ubuntu -G default -I ami-a7a97dce -f m1.small -d omnibus -r 'role[base],role[tc],role[sample] ’ #Rackspace knife rackspace server create --image 110 --flavor 2 -i ~/.ssh/mray.pem -d omnibus -r 'role[base],role[tc],role[sample] ’ #CloudStack knife cs server create -S "small instance" -T "CentOS 5.5(64-bit) no GUI (KVM)" -i ~/.ssh/mray.pem -d omnibus -r 'role[base],role[tc],role[sample] ’ #Ubuntu Linux VM knife bootstrap test.lab -i ~/.ssh/mray.pem -x ubuntu --sudo -d omnibus -r 'role[base],role[tc],role[sample]'

Tomcat stack deployed ec2-107-21-179-169.compute-1.amazonaws.com [Thu, 23 Feb 2012 03:16:27 +0000] INFO: Chef Run complete in 125.548799554 seconds ec2-107-21-179-169.compute-1.amazonaws.com [Thu, 23 Feb 2012 03:16:27 +0000] INFO: Running report handlers ec2-107-21-179-169.compute-1.amazonaws.com [Thu, 23 Feb 2012 03:16:27 +0000] INFO: Report handlers complete Instance ID: i-ee18148b Flavor: m1.small Image: ami-0c6ebd65 Region: us-east-1 Availability Zone: us-east-1b Security Groups: default SSH Key: mray Root Device Type: instance-store Public DNS Name: ec2-107-21-179-169.compute-1.amazonaws.com Public IP Address: 107.21.179.169 Private DNS Name: ip-10-120-255-91.ec2.internal Private IP Address: 10.120.255.91 Environment: _default Run List: role[base], role[tc], role[sample]

Update the sample cookbook $ knife cookbook upload sample Uploading sample [0.0.2] upload complete

Update the nodes $ knife ssh "role:base" "sudo chef-client" -i ~/.ssh/mray.pem -x ubuntu -a cloud.public_ipv4 107.21.179.169 [Thu, 23 Feb 2012 03:30:22 +0000] INFO: *** Chef 0.10.8 *** 107.21.179.169 [Thu, 23 Feb 2012 03:30:30 +0000] INFO: Run List is [role[base], role[tc], role[sample]] 107.21.179.169 [Thu, 23 Feb 2012 03:30:30 +0000] INFO: Run List expands to [chef-client, ntp, sudo, users::sysadmins, java, tomcat, sample] 107.21.179.169 [Thu, 23 Feb 2012 03:30:30 +0000] INFO: Starting Chef Run for i-ee18148b 107.21.179.169 [Thu, 23 Feb 2012 03:30:30 +0000] INFO: Running start handlers 107.21.179.169 [Thu, 23 Feb 2012 03:30:30 +0000] INFO: Start handlers complete. 107.21.179.169 [Thu, 23 Feb 2012 03:30:36 +0000] INFO: Loading cookbooks [chef-client, java, jpackage, ntp, sample, sudo, tomcat, users] 107.21.179.169 [Thu, 23 Feb 2012 03:30:36 +0000] INFO: Storing updated cookbooks/sample/recipes/default.rb in the cache. <SNIP> 107.21.179.169 [Thu, 23 Feb 2012 03:30:37 +0000] INFO: template[/var/lib/tomcat6/webapps/sample/index.html] updated content 107.21.179.169 [Thu, 23 Feb 2012 03:30:37 +0000] INFO: template[/var/lib/tomcat6/webapps/sample/index.html] sending restart action to service[tomcat] (immediate) 107.21.179.169 [Thu, 23 Feb 2012 03:30:37 +0000] INFO: Processing service[tomcat] action restart (tomcat::default line 42) 107.21.179.169 [Thu, 23 Feb 2012 03:30:45 +0000] INFO: service[tomcat] restarted 107.21.179.169 [Thu, 23 Feb 2012 03:30:45 +0000] INFO: Chef Run complete in 15.170097638 seconds 107.21.179.169 [Thu, 23 Feb 2012 03:30:45 +0000] INFO: Running report handlers 107.21.179.169 [Thu, 23 Feb 2012 03:30:45 +0000] INFO: Report handlers complete

http://www.flickr.com/photos/kathycsus/2686772625 IP addresses Hostnames FQDNs Search for nodes with Roles Find configuration data Search

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 |memb| -%> server <%= memb[:hostname] %> <%= memb[: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 Nagios Graphite

Jboss App Memcache Postgres Slaves Postgres Master Nagios Graphite Becomes this

Jboss App Memcache Postgres Slaves Postgres Master Nagios Graphite Updates can be automatic

Nagios Graphite 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 400+ Community cookbooks http://community.opscode.com

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

Thanks! [email_address] www.opscode.com Twitter/IRC/GitHub: mattray

vBACD - Introduction to Opscode Chef - 2/29

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