add nginx/unicorn support for puppet master on centos

this is a huge commit which adds support to install nginx on a centos7 node with unicorn backend. You can run an all-in-one node with puppet master/ca on it, or use it to configure a central ssl offloading proxy with puppet ca on it and several master backends and backups.

Author: Tim Meusel

README.markdown

@@ -13,6 +13,7 @@ as this module requires the passenger apache module.
 
 Requires the following modules from puppetforge: [stdlib](https://forge.puppetlabs.com/puppetlabs/stdlib), [apache](https://forge.puppetlabs.com/puppetlabs/apache), [concat](https://forge.puppetlabs.com/puppetlabs/concat), [inifile](https://forge.puppetlabs.com/puppetlabs/inifile)
 
+
 ## Usage Note ##
 
 If you are using this module to install a puppetmaster and serving the manifest of 
@@ -52,6 +53,13 @@ Puppet 3.5 introduced a new way of handling Puppet environments known as _Direct
 
 Optionally, an `environmentpath` parameter can be supplied to configure the base root of Puppet environments, this defaults to `$confdir/environments`
 
+### Support for httpd and nginx ###
+
+    class { 'puppet::master':
+      webserver => 'nginx'
+    }
+
+The default installed webserver is httpd with passenger, but via the webserver param you can switch to nginx with unicorn (nginx is currently only tested on centos7, testers are welcome). Note that if you have selinux enabled, you must have [this](https://github.com/gavinrogers/puppet-selinux) selinux module installed.
 
 ## Agent ##
     class { 'puppet::agent':

files/nginx.selmodule

@@ -27,6 +27,8 @@
 #   ['templatedir']           - Template dir, if unset it will remove the setting.
 #   ['configtimeout']         - How long the client should wait for the configuration to be retrieved before considering it a failure
 #   ['stringify_facts']       - Wether puppet transforms structured facts in strings or no. Defaults to true in puppet < 4, deprecated in puppet >=4 (and will default to false)
+#   ['serialization_format']  - defaults to undef, otherwise it sets the preferred_serialization_format param (currently only msgpack is supported)
+#   ['serialization_package'] - defaults to undef, if provided, we install this package, otherwise we fall back to the gem from 'serialization_format'
 #   ['cron_hour']             - What hour to run if puppet_run_style is cron
 #   ['cron_minute']           - What minute to run if puppet_run_style is cron
 #
@@ -51,6 +53,8 @@
   $puppet_run_command     = '/usr/bin/puppet agent --no-daemonize --onetime --logdest syslog > /dev/null 2>&1',
   $user_id                = undef,
   $group_id               = undef,
+  $serialization_format   = undef,
+  $serialization_package  = undef,
 
   #[main]
   $templatedir            = undef,
@@ -206,6 +210,7 @@
       path    => $::puppet::params::puppet_conf,
       require => File[$::puppet::params::puppet_conf],
       section => 'agent',
+      ensure  => present,
   }
 
   if (($use_srv_records == true) and ($srv_domain == undef))
@@ -215,7 +220,6 @@
   elsif (($use_srv_records == true) and ($srv_domain != undef))
   {
     ini_setting {'puppetagentsrv_domain':
-      ensure  => present,
       setting => 'srv_domain',
       value   => $srv_domain,
     }
@@ -252,69 +256,57 @@
   }
 
   ini_setting {'puppetagentenvironment':
-    ensure  => present,
     setting => 'environment',
     value   => $environment,
   }
 
   ini_setting {'puppetagentmaster':
-    ensure  => present,
     setting => 'server',
     value   => $puppet_server,
   }
 
   ini_setting {'puppetagentuse_srv_records':
-    ensure  => present,
     setting => 'use_srv_records',
     value   => $use_srv_records,
   }
 
   ini_setting {'puppetagentruninterval':
-    ensure  => present,
     setting => 'runinterval',
     value   => $runinterval,
   }
 
   ini_setting {'puppetagentsplay':
-    ensure  => present,
     setting => 'splay',
     value   => $splay,
   }
 
   ini_setting {'puppetmasterport':
-    ensure  => present,
     setting => 'masterport',
     value   => $puppet_server_port,
   }
   ini_setting {'puppetagentreport':
-    ensure  => present,
     setting => 'report',
     value   => $report,
   }
   ini_setting {'puppetagentpluginsync':
-    ensure  => present,
     setting => 'pluginsync',
     value   => $pluginsync,
   }
   ini_setting {'puppetagentlisten':
-    ensure  => present,
     setting => 'listen',
     value   => $listen,
   }
   ini_setting {'puppetagentreportserver':
-    ensure  => present,
     setting => 'reportserver',
     value   => $reportserver,
   }
   ini_setting {'puppetagentdigestalgorithm':
-    ensure  => present,
     setting => 'digest_algorithm',
     value   => $digest_algorithm,
   }
   if ($templatedir != undef) and ($templatedir != 'undef')
   {
     ini_setting {'puppetagenttemplatedir':
-      ensure  => present,
       setting => 'templatedir',
       section => 'main',
       value   => $templatedir,
@@ -329,17 +321,46 @@
     }
   }
   ini_setting {'puppetagentconfigtimeout':
-    ensure  => present,
     setting => 'configtimeout',
     value   => $configtimeout,
   }
   if $stringify_facts != undef {
     ini_setting {'puppetagentstringifyfacts':
-      ensure  => present,
       setting => 'stringify_facts',
       value   => $stringify_facts,
     }
   }
+  if $serialization_format != undef {
+    if $serialization_package != undef {
+      package { $serialization_package:
+        ensure  => latest,
+      }
+    } else {
+      if $serialization_format == 'msgpack' {
+        unless defined(Package[$::puppet::params::ruby_dev]) {
+          package {$::puppet::params::ruby_dev:
+            ensure => 'latest',
+          }
+        }
+        unless defined(Package['gcc']) {
+          package {'gcc':
+            ensure => 'latest',
+          }
+        }
+        unless defined(Package['msgpack']) {
+          package {'msgpack':
+            ensure   => 'latest',
+            provider => 'gem',
+            require  => Package[$::puppet::params::ruby_dev, 'gcc'],
+          }
+        }
+      }
+    }
+    ini_setting {'puppetagentserializationformatagent':
+      setting => 'preferred_serialization_format',
+      value   => $serialization_format,
+    }
+  }
   if $verbose != undef {
     ini_setting {'puppetagentverbose':
       ensure  => present,
@@ -399,3 +420,4 @@
     }
   }
 }
+