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DevOps Chef & Friday 16 March 12

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DevOps Friday 16 March 12

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Devs Ops vs Friday 16 March 12

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Devs Ops vs Friday 16 March 12

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Devs Ops vs The Wall Of Confusion Friday 16 March 12

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Change Stability vs Friday 16 March 12

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A Meeting of Minds Follow code into the wild Accept change: become agile Friday 16 March 12

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Buzzword: DevOps Friday 16 March 12

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Buzzword Buzzword: DevOps Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Friday 16 March 12

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Buzzword Buzzword: DevOps Buzzword Buzzword Buzz Lightyear Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Friday 16 March 12

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Buzzword Buzzword: DevOps Buzzword Buzzword Buzz Lightyear Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzzword Buzz Aldrin Friday 16 March 12

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What is DevOps? Friday 16 March 12

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What is DevOps? What is DevOps NOT? Friday 16 March 12

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What is DevOps? What is DevOps NOT? They are making a play for our jobs Friday 16 March 12

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What is DevOps? What is DevOps NOT? They are making a play for our jobs Devs want root Friday 16 March 12

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What is DevOps? What is DevOps NOT? DevOps is not a job title, it’s a philosophy They are making a play for our jobs Devs want root Friday 16 March 12

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What is DevOps? What is DevOps NOT? DevOps is not a job title, it’s a philosophy They are making a play for our jobs Devs want root So many words Friday 16 March 12

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DevOps, for me Friday 16 March 12

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DevOps, for me: Testing Friday 16 March 12

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DevOps, for me: Testing Monitoring Friday 16 March 12

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DevOps, for me: Testing Automation Monitoring Friday 16 March 12

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DevOps, for me: Testing Automation Monitoring Friday 16 March 12

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DevOps, for me: Testing Automation Monitoring Don’t release broken things Know when things break Replace/fix broken things instantly Friday 16 March 12

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✔ ? Friday 16 March 12

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SCCS: Source Code Control System Friday 16 March 12

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SCCS: Source Code Control System 1972 40 Years Ago! Friday 16 March 12

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Revision Control ✔ Friday 16 March 12

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Revision Control Test Driven Development ✔ Friday 16 March 12

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Revision Control Test Driven Development Feature Branches ✔ Friday 16 March 12

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Revision Control Test Driven Development Continuous Integration Feature Branches ✔ Friday 16 March 12

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Revision Control Test Driven Development Continuous Integration Feature Branches Staging Environments ✔ Friday 16 March 12

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Revision Control Test Driven Development Continuous Integration Feature Branches Staging Environments AGILE ✔ Friday 16 March 12

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AGILE Friday 16 March 12

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AGILE OPS ? Friday 16 March 12

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AGILE OPS Continuous Deployment Feature Flags Dark Launches Automated Recovery IMVU - 50+ Etsy - 25 Flickr - 10+ ? Friday 16 March 12

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Instant Feedback Rollbacks Confidence No fear of change Friday 16 March 12

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Code Infrastructure Friday 16 March 12

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Code Infrastructure Friday 16 March 12

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Code Infrastructure As Friday 16 March 12

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$  ssh  root@web1 Last  login:  Tue  Mar  13 #  apt-­‐get  install  apache2 ... #  vim  /etc/apache2/sites-­‐enabled/default.conf ... #  /etc/init.d/apache2  restart ... #  scp  web2:/root/.ssh/authorized_keys  ~/.ssh Friday 16 March 12

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Chef Friday 16 March 12

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chef-client on node retrieves configuration from server use knife to push config to server use knife to query and ssh to clients SERVER CLIENT (workstation) CLIENT (server/node) Friday 16 March 12

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Chef/nodes/web1.json Friday 16 March 12

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{ "access" : [ "developers", "designers" ], "name": "web1", "run_list": [ "role[base]", "role[web]", "recipe[splunk]" ] } Friday 16 March 12

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{ "access" : [ "developers", "designers" ], "name": "web1", "run_list": [ "role[base]", "role[web]", "recipe[splunk]" ] } Friday 16 March 12

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Chef/nodes/web1.json Chef/roles/web.rb Friday 16 March 12

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run_list("recipe[apache]", "role[monitoring]") Friday 16 March 12

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run_list("recipe[apache]", "role[monitoring]") Friday 16 March 12

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Chef/nodes/web1.json Chef/roles/web.rb Chef/cookbooks/apache/ recipes/default.rb Friday 16 March 12

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package "apache2" do action :install end Friday 16 March 12

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apache_modules = ['wsgi', 'ssl', 'auth_tkt', 'proxy_http', 'headers', 'rewrite', 'status'] apache_modules.each do |mod| apache_module mod do enable true notifies :restart, "service[apache2]" end end Friday 16 March 12

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apache_modules = ['wsgi', 'ssl', 'auth_tkt', 'proxy_http', 'headers', 'rewrite', 'status'] apache_modules.each do |mod| apache_module mod do enable true notifies :restart, "service[apache2]" end end Friday 16 March 12

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package "apache2" do case node[:platform] when "centos","redhat","fedora","suse" package_name "httpd" when "debian","ubuntu" package_name "apache2-mpm-prefork" end action :install end Friday 16 March 12

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package "apache2" do case node[:platform] when "centos","redhat","fedora","suse" package_name "httpd" when "debian","ubuntu" package_name "apache2-mpm-prefork" end action :install end Friday 16 March 12

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Chef/nodes/web1.json Chef/roles/web.rb Chef/cookbooks/apache/ recipes/default.rb attributes/default.rb Friday 16 March 12

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default[:apache][:version] = "2.2" Friday 16 March 12

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package "apache2" do action :install version "#{node[:apache][:version]}" end Friday 16 March 12

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Chef/nodes/web1.json Chef/roles/web.rb Chef/cookbooks/apache/ recipes/default.rb attributes/default.rb templates/default/apache2.conf.erb Friday 16 March 12

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template "#{node[:apache][:dir]}/apache2.conf" do source "apache2.conf.erb" owner "root" mode 0644 notifies :restart, resources(:service => "apache2") end Friday 16 March 12

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It’s all Ruby Friday 16 March 12

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It’s all Ruby http://wiki.opscode.com/display/chef/Just+Enough+Ruby+for+Chef “Just Enough Ruby for Chef” Friday 16 March 12

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It’s all Ruby Let’s hack Friday 16 March 12

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Chef/nodes/web1.json Chef/roles/web.rb Chef/cookbooks/apache/ recipes/default.rb attributes/default.rb templates/default/apache2.conf.erb libraries/default.rb Friday 16 March 12

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class Chef class Recipe def apache_ports(&block) @node[:apache][:vhosts].each do |vh| vh[:ports].each do |p| block.call(p) end end end end end Friday 16 March 12

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apache_ports do |p| firewall_port p do action :open end end Friday 16 March 12

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apache_ports do |p| firewall_port p do action :open end end Friday 16 March 12

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define :firewall_port, :action => :open do if not params.has_key?(:port) params[:port] = params[:name] end if params[:action] == :open execute "open #{params[:port]}" do command "iptables -A INPUT --destination-port #{params[:port]} -j ACCEPT" end else execute "close #{params[:port]}" do command "iptables -A INPUT --destination-port #{params[:port]} -j DROP" end end end Friday 16 March 12

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Providers package "apache2" do action :install end node[:platform] apt-get install brew install yum install Friday 16 March 12

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"#{File.expand_path( Chef::Config[:file_cache_path] )}/handlers/yola.rb" Friday 16 March 12

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"#{File.expand_path( Chef::Config[:file_cache_path] )}/handlers/yola.rb" class YolaHandler < Chef::Handler def report() run_status.updated_resources.each do |r| campfire_speak(r.to_s) end end end Friday 16 March 12

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"#{File.expand_path( Chef::Config[:file_cache_path] )}/handlers/yola.rb" class YolaHandler < Chef::Handler def report() run_status.updated_resources.each do |r| campfire_speak(r.to_s) end end end Friday 16 March 12

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Chef/nodes/web1.json Chef/roles/web.rb Chef/cookbooks/apache/ recipes/default.rb attributes/default.rb templates/default/apache2.conf.erb libraries/default.rb Chef/environments/production.rb Friday 16 March 12

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Chef/nodes/web1.json Chef/roles/web.rb Chef/cookbooks/apache/ recipes/default.rb attributes/default.rb templates/default/apache2.conf.erb libraries/default.rb Chef/environments/production.rb Chef/environments/testing.rb Friday 16 March 12

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default_attributes({ "aws_region" => "usa-east" }) default_attributes({ "aws_region" => "usa-east", "logging" => { "debug" => true } }) Friday 16 March 12

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Chef/nodes/web1.json Chef/roles/web.rb Chef/cookbooks/apache/ recipes/default.rb attributes/default.rb templates/default/apache2.conf.erb libraries/default.rb Chef/environments/production.rb Chef/environments/testing.rb Chef/data_bags/employees/jonathan.json Friday 16 March 12

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{ "name": "Jonathan Hitchcock", "id": "jonathan", "groups": ["developers", "operations"], "ssh_keys": [ { "key": "AAAB3NzC1yc2EAAAABIwAAAQEA3advEyDE0aEo==" } ] } Friday 16 March 12

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Provisioning Friday 16 March 12

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Provisioning $ knife ec2 server create -r 'role[webserver]' -I ami-7000f019 -f m1.small Friday 16 March 12

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Provisioning $ knife ec2 server create -r 'role[webserver]' -I ami-7000f019 -f m1.small Amazon EC2 Rackspace Cloud Openstack Eucalyptus Kickstart libvirt XEN KVM Vagrant Friday 16 March 12

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Integration configuration data vs configuration logic Friday 16 March 12

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Integration configuration data vs configuration logic Friday 16 March 12

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Integration vs configuration logic Ohai Collects infrastructure data Stored and indexed in NoSQL Search and use configuration data Friday 16 March 12

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Attributes default normal override automatic (A side note on) Friday 16 March 12

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Attributes default normal override automatic cookbooks, data bags node definitions for special cases ohai (A side note on) Friday 16 March 12

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Integration search(:node, 'role:webbackend') do |wb| haproxy_backend "#{wb[:apache][:port]}" do action :create end end Systems auto-discover each other Configuration is responsive to changes (Back to) Friday 16 March 12

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Integration search(:node, 'role:webbackend') do |wb| haproxy_backend "#{wb[:apache][:port]}" do action :create end end Systems auto-discover each other Configuration is responsive to changes So you don’t have to be! Friday 16 March 12

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Jonathan Hitchcock @vhata github.com/vhata Friday 16 March 12