Stabilize your environment, stabilize your code - Midwest PHP 2014

Without a development environment that closely matches your production environment, the process of promoting your code from dev to prod will be fraught with peril. We will go into the fine details that you need to know to get started working with Vagrant, VirtualBox and Puppet, teaching the tools needed to not only stabilize your development environment, but improve the confidence you have in your code as it is promoted from development to production.

Find out more at: http://jmather.com/talks/midwest-php-2014/stabilize/

Transcript

1. Stabilize your environment,
   stabilize your code
   Jacob Mather
   Software Engineer, Mashery
   

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2. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
   Who am I?
   What I do:
   • Software Engineer at Mashery
   • Co-organizer of the

   San Francisco PHP User Group
   • Community Evangelist
   Where I can be found:
   • Blog: http://jmather.com
   • Twitter: @thejmather
   

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3. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
   Why I am giving this talk
   

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4. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
   Failure to specifically build an
   environment for development will
   directly impact developer
   productivity and product quality.
   

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5. Let’s talk about

   Vagrant
   

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6. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
   What is Vagrant?
   A tool that allows you to create and configure lightweight,
   reproducible, and portable development environments.
   

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7. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
   Why was Vagrant created?
   To solve the problem of how to have easy an to build development
   environment that is identical across the entire team.
   

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8. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
   Vagrant terms
   • Box, or base box, is the ‘initial image’ of a virtual machine.
   • Host, or your computer, the machine running the VMs
   • Guest, or vm, referring to an individual VM instance
   • Provider, an adapter to a VMS (like VirtualBox or VMWare)
   • Provisioner, provides post-boot configuration of guests
   

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9. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
   Basic Vagrant Commands
   • vagrant up - Turn guest on
   • vagrant halt - Turn guest off
   • vagrant status - Show guest status
   • vagrant destroy - Delete guest
   • vagrant suspend - Suspend guest
   • vagrant resume - Resume guest
   • vagrant ssh - SSH into guest
   

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10. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    How to use Vagrant
    • Install Vagrant - http://vagrantup.com
    • Check out your repository
    • Run: vagrant up
    

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11. Let’s talk about

    code
    

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12. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile
    Vagrant.configure("2")  do  |config|

       config.vm.box  =  "base-­‐box-­‐name"

       config.vm.box_url  =  "http://some/url.box"

    end

    

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13. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile (add file system)
    Vagrant.configure("2")  do  |config|

       config.vm.box  =  "base-­‐box-­‐name"

       config.vm.box_url  =  "http://some/url.box"

       config.vm.synced_folder  "/data",  "/vagrant_data"

    end

    

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14. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile (add port forwarding)
    Vagrant.configure("2")  do  |config|

       config.vm.box  =  "base-­‐box-­‐name"

       config.vm.box_url  =  "http://some/url.box"

       config.vm.synced_folder  "/data",  "/vagrant_data"

       config.vm.network  :forwarded_port,  guest:  80,  host:  8080

    end

    

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15. Let’s talk about

    clouds
    

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16. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Replicating production matters
    If you are writing code that will be deployed to a multiple-host
    environment, why aren’t you writing your code in a multiple-
    host environment?
    

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17. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile
    Vagrant.configure("2")  do  |config|

       config.vm.hostname  =  "web-­‐server"

       config.vm.box  =  "base-­‐box-­‐name"

       config.vm.box_url  =  "http://some/url.box"

    end

    

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18. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile
    Vagrant.configure("2")  do  |config|  
    

       config.vm.hostname  =  "web-­‐server"

       config.vm.box  =  "base-­‐box-­‐name"

       config.vm.box_url  =  "http://some/url.box"

    end

    

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19. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile (Multi-Guest ready)
    Vagrant.configure("2")  do  |config|

       config.vm.define  "web-­‐server"  do  |node|

           node.vm.hostname  =  "web-­‐server"

           node.vm.box  =  "base-­‐box-­‐name"

           node.vm.box_url  =  "http://some/url.box"

       end

    end

    

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20. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile (Multi-Guest ready)
    Vagrant.configure("2")  do  |config|

       config.vm.define  "web-­‐server"  do  |node|

           node.vm.hostname  =  "web-­‐server"

           node.vm.box  =  "base-­‐box-­‐name"

           node.vm.box_url  =  "http://some/url.box"

       end

    end

    

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21. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile (Multi-Guest ready)
    Vagrant.configure("2")  do  |config|

       config.vm.define  "web-­‐server"  do  |node|

           node.vm.hostname  =  "web-­‐server"

           node.vm.box  =  "base-­‐box-­‐name"

           node.vm.box_url  =  "http://some/url.box"

       end

    end

    

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22. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile (Multi-Guest)
    Vagrant.configure("2")  do  |config|

       config.vm.define  "web-­‐server"  do  |node|

           node.vm.hostname  =  "web-­‐server"

           node.vm.box  =  "base-­‐box-­‐name"

           node.vm.box_url  =  "http://some/url.box"

       end

       config.vm.define  "db-­‐server"  do  |node|

           node.vm.hostname  =  "db-­‐server"

           node.vm.box  =  "base-­‐box-­‐name"  

           node.vm.box_url  =  "http://some/url.box"

       end

    end
    

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23. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile (Multi-Guest, useful, part 1)
    nodes  =  {

           'web-­‐server'  =>  {

                   :hostname  =>  'server.example.com',

                   :ipAddress  =>  '192.168.56.60',

           },

           'db-­‐server'  =>  {

                   :hostname  =>  'db.example.com',

                   :ipAddress  =>  '192.168.56.61',

           }

    }
    

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24. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile (Multi-Guest, useful, part 2)
    nodes  =  {  /*  ...  node  definition  ...  */  };

    Vagrant.configure("2")  do  |config|

       nodes.each_pair  do  |name,  options|

           machineName  =  options[:hostname]

           ipAddy  =  options[:ipAddress]  
           config.vm.define  name  do  |node|

               node.vm.box  =  "base-­‐box-­‐name"

               node.vm.box_url  =  "http://some/url.box"

               node.vm.hostname  =  machineName

               node.vm.network  :private_network,  ip:  ipAddy

           end

       end

    end
    

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25. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile (Multi-Guest, useful, part 2)
    nodes  =  {  /*  ...  node  definition  ...  */  };

    Vagrant.configure("2")  do  |config|

       nodes.each_pair  do  |name,  options|

           machineName  =  options[:hostname]

           ipAddy  =  options[:ipAddress]  
           config.vm.define  name  do  |node|

               node.vm.box  =  "base-­‐box-­‐name"

               node.vm.box_url  =  "http://some/url.box"

               node.vm.hostname  =  machineName

               node.vm.network  :private_network,  ip:  ipAddy

           end

       end

    end
    

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26. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile (Multi-Guest, useful, part 2)
    nodes  =  {  /*  ...  node  definition  ...  */  };

    Vagrant.configure("2")  do  |config|

       nodes.each_pair  do  |name,  options|

           machineName  =  options[:hostname]

           ipAddy  =  options[:ipAddress]  
           config.vm.define  name  do  |node|

               node.vm.box  =  "base-­‐box-­‐name"

               node.vm.box_url  =  "http://some/url.box"

               node.vm.hostname  =  machineName

               node.vm.network  :private_network,  ip:  ipAddy

           end

       end

    end
    

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27. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile (Multi-Guest, useful, part 2)
    nodes  =  {  /*  ...  node  definition  ...  */  };

    Vagrant.configure("2")  do  |config|

       nodes.each_pair  do  |name,  options|

           machineName  =  options[:hostname]

           ipAddy  =  options[:ipAddress]  
           config.vm.define  name  do  |node|

               node.vm.box  =  "base-­‐box-­‐name"

               node.vm.box_url  =  "http://some/url.box"

               node.vm.hostname  =  machineName

               node.vm.network  :private_network,  ip:  ipAddy

           end

       end

    end
    

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28. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile (Multi-Guest, useful, part 2)
    nodes  =  {  /*  ...  node  definition  ...  */  };

    Vagrant.configure("2")  do  |config|

       nodes.each_pair  do  |name,  options|

           machineName  =  options[:hostname]

           ipAddy  =  options[:ipAddress]  
           config.vm.define  name  do  |node|

               node.vm.box  =  "base-­‐box-­‐name"

               node.vm.box_url  =  "http://some/url.box"

               node.vm.hostname  =  machineName

               node.vm.network  :private_network,  ip:  ipAddy

           end

       end

    end
    

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29. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile (Multi-Guest, useful, part 2)
    nodes  =  {  /*  ...  node  definition  ...  */  };

    Vagrant.configure("2")  do  |config|

       nodes.each_pair  do  |name,  options|

           machineName  =  options[:hostname]

           ipAddy  =  options[:ipAddress]  
           config.vm.define  name  do  |node|

               node.vm.box  =  "base-­‐box-­‐name"

               node.vm.box_url  =  "http://some/url.box"

               node.vm.hostname  =  machineName

               node.vm.network  :private_network,  ip:  ipAddy

           end

       end

    end
    

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30. Let’s talk about

    Providers
    

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31. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Vagrant Providers
    !
    Providers
    !
    Vagrant
    

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32. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Vagrant Providers
    VirtualBox
    VMWare (WS or Fusion)
    Parallels Desktop
    !
    Providers
    !
    Vagrant
    

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33. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Vagrant Providers
    VirtualBox
    VMWare (WS or Fusion)
    Parallels Desktop
    Amazon AWS
    Digital Ocean
    !
    Providers
    !
    Vagrant
    

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34. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Vagrant Providers (desktop)
    • VirtualBox is FREE! (sort of)
    • Built in FS bridging is historically bad but getting better
    • Newer versions are less stable (use 4.2.16!!)
    • VMWare (Workstation or Fusion!) is PAID!
    • You have to buy both VMWare and provider
    • Supposed to be more stable and snappy
    • Parallels Desktop adapter is FREE!
    • Open source project
    • You do still have to buy Parallels Desktop
    

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35. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Vagrant Providers (cloud)
    • Amazon AWS
    • Digital Ocean
    • RackSpace Cloud
    

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36. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Vagrant Provider Limits
    Spinning up guests is cool, but what do I do with a box once
    it’s up? How do I control it? How do I make it useful?
    !
    Computing hardware without software is nearly useless.
    

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37. Let’s talk about

    Provisioners
    

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38. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Vagrant Provisioners
    !
    Provisioners
    !
    Vagrant
    

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39. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Shell Scripts
    Puppet
    Chef
    Ansible
    Vagrant Provisioners
    !
    Provisioners
    !
    Vagrant
    

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40. Let’s talk about

    Puppet
    

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41. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    What is Puppet?
    Puppet, an automated administrative engine for your Linux, Unix,
    and Windows systems, performs administrative tasks (such as
    adding users, installing packages, and updating server
    configurations) based on a centralized specification.
    

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42. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Why was Puppet created?
    Puppet was created to provide a declarative way to define system
    and software configuration.
    

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43. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet terms
    • Manifests - This is “application” code
    • Modules - This is “library” code
    • Templates - Exactly as it sounds
    • Facter - Environment data
    • Hiera - Configuration data
    

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44. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    How to use Puppet?
    Select a base box for Vagrant from Puppet Labs
    !
    http://puppet-vagrant-boxes.puppetlabs.com/
    !
    I use CentOS 6.4 for VirtualBox
    

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45. Let’s talk about

    code
    

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46. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile
    Vagrant.configure("2")  do  |config|

       config.vm.box  =  "base-­‐box-­‐name"

       config.vm.box_url  =  "http://some/url.box"

    end

    

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47. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile
    Vagrant.configure("2")  do  |config|

       config.vm.box  =  "base-­‐box-­‐name"

       config.vm.box_url  =  “http://some/url.box"  
    !
    !
    !
    !
    

    end

    

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48. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile
    Vagrant.configure("2")  do  |config|

       config.vm.box  =  "base-­‐box-­‐name"

       config.vm.box_url  =  “http://some/url.box"  
    !
    !
    !
    !
    

    end
    

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49. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile (add Puppet)
    Vagrant.configure("2")  do  |config|

       config.vm.box  =  "base-­‐box-­‐name"

       config.vm.box_url  =  "http://some/url.box"

       config.vm.provision  :puppet  do  |puppet|

           puppet.manifests_path  =  "manifests/"

           puppet.manifest_file    =  “init.pp"

           puppet.module_path  =  "modules/"

       end

    end

    

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50. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Vagrantfile (add Puppet)
    Vagrant.configure("2")  do  |config|

       config.vm.box  =  "base-­‐box-­‐name"

       config.vm.box_url  =  "http://some/url.box"

       config.vm.provision  :puppet  do  |puppet|

           puppet.manifests_path  =  "manifests/"

           puppet.manifest_file    =  “init.pp"

           puppet.module_path  =  "modules/"

       end

    end

    

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51. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Puppet Manifest (init.pp)
    notify  {  "Look!  My  puppet  code  is  working!":  }

    

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52. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Puppet Manifest (init.pp, add Apache)
    notify  {  "Look!  My  puppet  code  is  working!":  }

       

    package  {  "httpd":

       ensure  =>  present,

    }

       

    service  {  "httpd":

       require  =>  Package["httpd"],

       ensure  =>  running,

       enabled  =>  true,

    }
    

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53. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Basic Puppet Manifest (refactored Apache)
    #  manifests/init.pp

    notify  {  "Code  works!":  }

    require  server::httpd

    #  modules/server/manifests/httpd.pp

    class  server::httpd  {

       package  {  "httpd":

           ensure  =>  present,

       }

       service  {  "httpd":

           require  =>  Package["httpd"],

           ensure  =>  running,

           enabled  =>  true,

       }

    }
    

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54. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (controlling flow)
    #  manifests/init.pp  
    notify  {  "Say  me  third":

       require  =>  Notify["Say  me  second"],

    }

       

    notify  {  "Say  me  second":

       require  =>  Notify["Say  me  first"],

    }

       

    notify  {  "Say  me  first":  }
    

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55. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (controlling flow)
    #  manifests/init.pp  
    notify  {  "Say  me  third":

       require  =>  Notify["Say  me  second"],

    }

       

    notify  {  "Say  me  second":

       require  =>  Notify["Say  me  first"],

    }

       

    notify  {  "Say  me  first":  }
    Output
    Say me first
    Say me second
    Say me third
    

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56. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (adding parameters)
    #  modules/server/manifests/writefile.pp

    class  server::writefile  ($content)  {

       file  {  "/tmp/test":

           content  =>  $content,

       }

    }

    

    #  or,  to  provide  a  default…  
    class  server::writefile  ($content  =  "")  {

       file  {  "/tmp/test":

           content  =>  $content

       }

    }
    

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57. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (passing parameters)
    #  manifests/init.pp  -­‐-­‐  using  defaults

    include  server::writetestfile

    

    #  manifests/init.pp  -­‐-­‐  passing  custom  value

    class  {  "server::writetestfile":

       content  =>  "test  content",

    }
    

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58. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (including classes)
    #  manifests/init.pp  
    #  the  class  below  must  be  loaded  BEFORE  guest

    require  server::writetestfile

       

    #  the  class  below  must  be  loaded  WITH  guest

    include  server::writetestfile  
       

    #  the  class  below  must  be  loaded  AFTER  guest

    class  {  "server::writetestfile":

       content  =>  "test  content",

    }
    

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59. Let’s talk about

    how to do things conditionally
    

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60. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    External Input in Puppet
    There are three primary sources of where data that branches your
    logic will come from:
    !
    • User Space Variables
    • $things = “you set yourself”
    • Facts
    • Specific details about your current environment, such as the
    name of the host, ip address, operating system, etc...
    • Hiera
    • Configuration you pass in to enable building for multiple
    configurations from the same shared codebase
    !
    

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61. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (variables)
    #  local  variable

    $host  =  "mybox"

    

    if  ($host  ==  "mybox")  {

       notify  {  "Box!":  }

    }

    

    if  ($host  ==  "mybox")  {

       notify  {  "${host}!":  }

    }
    

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62. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (scope)
    #  fact  -­‐  environment  configuration

    if  ($hostname  ==  "box")  {  notify  {  "Box!":  }  }  
                                                                         #  outputs:  Box!

    

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63. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (variables, facts, scope)
    #  fact  -­‐  environment  configuration

    if  ($hostname  ==  "box")  {  notify  {  "Box!":  }  }  
                                                                         #  outputs:  Box!

    if  ($::hostname  ==  "box")  {  notify  {  "Box!":  }  }  
                                                                         #  outputs:  Box!

    

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64. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (variables, facts, scope)
    #  fact  -­‐  environment  configuration

    if  ($hostname  ==  "box")  {  notify  {  "Box!":  }  }  
                                                                         #  outputs:  Box!

    if  ($::hostname  ==  "box")  {  notify  {  "Box!":  }  }  
                                                                         #  outputs:  Box!

    #  assign  $hostname  locally...

    $hostname  =  "some  string"

    

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65. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (variables, facts, scope)
    #  fact  -­‐  environment  configuration

    if  ($hostname  ==  "box")  {  notify  {  "Box!":  }  }  
                                                                         #  outputs:  Box!

    if  ($::hostname  ==  "box")  {  notify  {  "Box!":  }  }  
                                                                         #  outputs:  Box!

    #  assign  $hostname  locally...

    $hostname  =  "some  string"

    if  ($hostname  ==  "box")  {  notify  {  "Box!":  }  }  
                                                                         #  no  output

    

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66. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (variables, facts, scope)
    #  fact  -­‐  environment  configuration

    if  ($hostname  ==  "box")  {  notify  {  "Box!":  }  }  
                                                                         #  outputs:  Box!

    if  ($::hostname  ==  "box")  {  notify  {  "Box!":  }  }  
                                                                         #  outputs:  Box!

    #  assign  $hostname  locally...

    $hostname  =  "some  string"

    if  ($hostname  ==  "box")  {  notify  {  "Box!":  }  }  
                                                                         #  no  output

    if  ($::hostname  ==  "box")  {  notify  {  "Box!":  }  }  
                                                                         #  outputs:  Box!

    

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67. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (facts, debugging)
    #  what  facts  are  there?  Let’s  find  out!

       

    #  this  should  be  one  line,  but  it  is  too  long  to  fit

    $tmpl  =  "                  (String)  &&  v.is_a?(String)  )  }.to_yaml  %>"

       

    #  create  a  file...

    file  {  "/tmp/facts.yaml":

       content  =>  inline_template($tmlp),

    }
    

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68. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (facts, debugging, cont…)
    What values are available?
    !
    architecture, kernelversion, netmask_eth1, rubyversion,
    operatingsystem, memorysize_mb, processor0, interfaces,
    uptime, physicalprocessorcount, osfamily, selinux,
    operatingsystemrelease, ipaddress, and much more…
    

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69. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (hiera)
    #  hieradata/common.yml

    thing:  "Something  Special"

    #  modules/server/manifests/writefile.pp

    class  server::writefile  ()  {

       $content  =  hiera('thing')

       file  {  "/tmp/test":

           content  =>  $content

       }

    }
    

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70. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (hiera, really neat)
    #  hieradata/common.yml

    server::writefile::content:  "Something  Special"

    #  modules/server/manifests/writefile.pp

    class  server::writefile  ($content  =  "")  {

       file  {  "/tmp/test":

           content  =>  $content

       }

    }
    

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71. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (if conditionals)
    if  ("a"  ==  "b")  {

       notify  {  "Inconceivable!":  }

    }  elsif  ("hello"  =~  "help")  {

       notify  {  "Regex!":  }

    }  else  {

       notify  {  "Echo  something...":  }

    }
    

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72. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (case conditionals)
    #  $::operatingsystem  is  a  fact,  provided  by  Facter

    case  $::operatingsystem  {

       centos,  redhat:  {  $apache  =  "httpd"  }

       debian,  ubuntu:  {  $apache  =  "apache2"  }

       default:  {  fail("Unrecognized  operating  system")  }

    }

    

    case  $::operatingsystem  {

       /linux/:  {  fail("We  don’t  support  Linux!”)  }

    }
    

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73. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Puppet Manifest (selector conditionals)
    #  $::operatingsystem  is  a  fact,  provided  by  Facter

    $package  =  $::operatingsystem  ?  {

       centos  =>  "httpd",

       redhat  =>  "httpd",

       /(i?)(ubuntu|debian)/  =>  "apache2",

       default  =>  undef

    }
    

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74. Let’s talk about

    real multiple guest configuration
    

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75. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Define our guest nodes (Vagrantfile)
    nodes  =  {

           'web'  =>  {

                   :hostname  =>  'web-­‐server.example.com',

                   :ipAddress  =>  '192.168.56.60',

           },

           'db'  =>  {

                   :hostname  =>  'db-­‐server.example.com',

                   :ipAddress  =>  '192.168.56.61',

           }

    }
    

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76. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Define our guest nodes (Vagrantfile)
    nodes  =  {  /*  ...  node  definition  ...  */  };

    

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77. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Tell Vagrant about them (Vagrantfile)
    nodes  =  {  /*  ...  node  definition  ...  */  };

    Vagrant.configure("2")  do  |config|

       nodes.each_pair  do  |name,  options|

           hostname  =  options[:hostname]

           ipAddy  =  options[:ipAddress]

           config.vm.define  name  do  |node|

               node.vm.box  =  "base-­‐box-­‐name"

               node.vm.box_url  =  "http://some/url.box"

               node.vm.hostname  =  hostname

               node.vm.network  :private_network,  ip:  ipAddy

           end

       end

    end
    

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78. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Tell Vagrant about them (Vagrantfile)
    nodes  =  {  /*  ...  node  definition  ...  */  };

    Vagrant.configure("2")  do  |config|

       nodes.each_pair  do  |name,  options|

           config.vm.define  name  do  |node|

               /*  ...  basic  node  configuration  ...  */  
    !
    !
    !
    !
    !
           end

       end

    end
    

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79. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Tell Vagrant about them (Vagrantfile)
    nodes  =  {  /*  ...  node  definition  ...  */  };

    Vagrant.configure("2")  do  |config|

       nodes.each_pair  do  |name,  options|

           config.vm.define  name  do  |node|

               /*  ...  basic  node  configuration  ...  */  
    !
    !
    !
    !
    !
           end

       end

    end
    

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80. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    nodes  =  {  /*  ...  node  definition  ...  */  }

    Vagrant.configure("2")  do  |config|

       nodes.each_pair  do  |name,options|

           config.vm.define  name  do  |node|

               /*  ...  basic  node  configuration  ...  */  
               node.vm.provision  :puppet  do  |puppet|

                   puppet.manifests_path  =  "manifests/"

                   puppet.manifest_file    =  "init.pp"

                   puppet.module_path  =  "modules/"

               end  
           end

       end

    end
    Tell Vagrant about Puppet (Vagrantfile)
    

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81. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Tell Puppet about the guest nodes
    #  file:  manifests/init.pp

    if  ($::hostname  ==  "web-­‐1.example.com")  {

       #  only  run  for  web  server

    }

    

    if  ($::hostname  ==  "db-­‐1.example.com")  {

       #  only  run  for  db  server

    }
    

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82. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Tell Puppet about the guest nodes (redux)
    #  file:  manifests/init.pp

    if  ($::hostname  =~  /^web-­‐/)  {

       #  only  run  for  web  servers

    }

    

    if  ($::hostname  =~  /^db-­‐/)  {

       #  only  run  for  db  servers

    }
    

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83. Let’s talk about

    how everything ties together
    

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84. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Shell Scripts
    Puppet
    Chef
    Ansible
    VirtualBox
    VMWare (WS or Fusion)
    Parallels Desktop
    Amazon AWS
    Digital Ocean
    Vagrant Architecture
    !
    Providers
    !
    Provisioners
    !
    Vagrant
    

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85. Let’s talk about

    how to convince your boss
    

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86. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Where do you develop your code?
    

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87. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Production?
    

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88. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Not Production?
    

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89. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    “My Computer?”
    

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90. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    “Development”
    

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91. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    A Development Environment
    

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92. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Why developing in production is really bad
    Assuming, of course, that you are testing your code before you
    make it live.
    Production should always move from one stable version of code to
    another stable version of code. When you edit code in production,
    you inherently introduce instability, and can no longer be assured
    that your code is running as tested.
    

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93. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Why developing on a non production setup
    is also bad
    Debugging environmental issues is slow and painful.
    Developers should be solving problems that are in your
    software, not debugging configuration issues in your
    environment.
    When you build your code in an environment that isn’t related to
    production in any tangible way, you will often have constant
    reminders just how different your development environment is from
    production.
    

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94. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Where your development environment lives
    Remote
    • Easy for operations to set up
    • Easy to enforce a rigid structure
    • Limits developer’s choice of tool
    chain selection
    • Can get expensive and
    complicated to maintain
    • Developers must be online to do
    any development
    Local
    • Can require beefier hardware
    • Can take extra work to set up
    • Developers have the freedom to
    work how they work best
    • Developers can assist with
    infrastructural initiatives
    

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95. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Bad development environments will sap the resources out of
    your team. In addition to the time spent developing and testing
    new code and fixing bugs, you will spend time:
    When development environments attack
    Debugging broken environments or settings
    Debugging broken behavior between dev and prod
    Debugging broken behavior between two dev systems
    Working in broken ways because “it works”
    

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96. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    If your development environments do
    not properly mirror production, you
    won’t know if your code really works
    until you make it live.
    

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97. Let’s talk about

    what you should remember
    

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98. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Takeaways
    • Bad (or unstable) environments (be it dev, qa, staging, or
    prod) hurt developers.
    

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99. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
    Takeaways
    • Bad (or unstable) environments (be it dev, qa, staging, or
    prod) hurt developers.
    • Puppet lets you automate all of the configuration of your
    systems (dev, qa, staging, and prod), ensuring
    consistency between them.
    

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100. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
     Takeaways
     • Bad (or unstable) environments (be it dev, qa, staging, or
     prod) hurt developers.
     • Puppet lets you automate all of the configuration of your
     systems (dev, qa, staging, and prod), ensuring
     consistency between them.
     • Vagrant is easy to use, and will let you use your
     production puppet configs to build development
     environments.
     

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101. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
     Takeaways
     • Bad (or unstable) environments (be it dev, qa, staging, or
     prod) hurt developers.
     • Puppet lets you automate all of the configuration of your
     systems (dev, qa, staging, and prod), ensuring
     consistency between them.
     • Vagrant is easy to use, and will let you use your
     production puppet configs to build development
     environments.
     • You will manage server configuration, whether you
     decide to or not. If you choose not to do it formally it will
     come back to bite you when you forget something later.
     

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102. Let’s talk about

     where to go from here
     

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103. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
     If you’re still not sold...
     h"p://PuPHPet.com/
     /
     PuPHPet/provides/a/
     simple/config/tool/for/
     those/who/don’t/want/
     to/=nker/with/puppet/
     and/need/a/LAMP/stack/
     up/and/running/NOW./
     

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104. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
     And also look at...
     • Packer
     • http://packer.io
     • Take your Vagrant and Puppet usage to the next level by
     using Packer to pre-provision images for easy first spins
     • Build prebuilt systems for multiple VMS and cloud
     platforms
     • Docker
     • http://docker.io
     • A different idea of how to build multiple machine VM
     environments
     

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105. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
     And don’t forget...
     • Vagrant and Puppet Git Repository
     • https://github.com/jmather/vagrant-and-puppet
     

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106. Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014
     Thank you!
     More information about this talk can be found at:
     !
     http://bit.ly/midwestphp-stabilize
     !
     RATE MY TALK AT:
     https://joind.in/10567
     !
     PLEASE LEAVE FEEDBACK
     It’s the only way I can improve
     

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