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

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 

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

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. 

Let’s talk about
 Vagrant 

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. 

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. 

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 

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 

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 

Let’s talk about
 code 

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
 

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
 

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
 

Let’s talk about
 clouds 

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? 

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
 

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
 

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
 

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
 

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
 

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 

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',
        }
 } 

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 

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 

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 

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 

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 

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 

Let’s talk about
 Providers 

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

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

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 

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 

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

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. 

Let’s talk about
 Provisioners 

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

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

Let’s talk about
 Puppet 

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. 

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. 

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 

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 

Let’s talk about
 code 

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
 

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
 

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 

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
 

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
 

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

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,
 } 

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,
    }
 } 

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":  } 

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 

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
    }
 } 

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",
 } 

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",
 } 

Let’s talk about
 how to do things conditionally 

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 ! 

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}!":  }
 } 

Stabilize your environment, stabilize your code - MidwestPHP - March 16th, 2014 Puppet Manifest (scope) #  fact  -­‐  environment  configuration
 if  ($hostname  ==  "box")  {  notify  {  "Box!":  }  }                                                                        #  outputs:  Box!
 

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!
 

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"
 

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
 

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!
 

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  =  "<%=  scope.to_hash.reject  {  |k,v|  !(  k.is_a?
                  (String)  &&  v.is_a?(String)  )  }.to_yaml  %>"
    
 #  create  a  file...
 file  {  "/tmp/facts.yaml":
    content  =>  inline_template($tmlp),
 } 

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… 

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
    }
 } 

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
    }
 } 

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...":  }
 } 

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!”)  }
 } 

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
 } 

Let’s talk about
 real multiple guest configuration 

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',
        }
 } 

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

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 

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 

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 

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) 

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
 } 

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
 } 

Let’s talk about
 how everything ties together 

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 

Let’s talk about
 how to convince your boss 

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

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

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

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

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

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

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. 

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. 

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 

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” 

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. 

Let’s talk about
 what you should remember 

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

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. 

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. 

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. 

Let’s talk about
 where to go from here 

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./ 

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 

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 

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