puppet: Abstract out nagios plugins directory.

puppet/zulip/manifests/app_frontend_base.pp

@@ -10,14 +10,17 @@ class zulip::app_frontend_base {
   ]
   zulip::safepackage { $web_packages: ensure => 'installed' }
 
-  $nagios_plugins = $::osfamily ? {
-    'debian' => 'nagios-plugins-basic',
-    'redhat' => 'nagios-plugins',
-  }
-
-  $nginx = $::osfamily ? {
-    'debian' => 'nginx-full',
-    'redhat' => 'nginx',
+  case $::osfamily {
+    'debian': {
+      $nagios_plugins = 'nagios-plugins-basic'
+      $nagios_plugins_dir = '/usr/lib/nagios/plugins'
+      $nginx = 'nginx-full'
+    }
+    'redhat': {
+      $nagios_plugins = 'nagios-plugins'
+      $nagios_plugins_dir = '/usr/lib64/nagios/plugins'
+      $nginx = 'nginx'
+    }
   }
 
   file { '/etc/nginx/zulip-include/app':
@@ -145,7 +148,7 @@ class zulip::app_frontend_base {
   file { '/etc/cron.d/email-mirror':
     ensure => absent,
   }
-  file { '/usr/lib/nagios/plugins/zulip_app_frontend':
+  file { "${nagios_plugins_dir}/zulip_app_frontend":
     require => Package[$nagios_plugins],
     recurse => true,
     purge   => true,

puppet/zulip/manifests/base.pp

@@ -34,6 +34,7 @@ class zulip::base {
         'cron',
       ]
       $nagios_plugins = 'nagios-plugins-basic'
+      $nagios_plugins_dir = '/usr/lib/nagios/plugins'
     }
     'redhat': {
       $release_name = "${::operatingsystem}${::operatingsystemmajrelease}"
@@ -48,6 +49,7 @@ class zulip::base {
         'cronie'
       ]
       $nagios_plugins = 'nagios-plugins'
+      $nagios_plugins_dir = '/usr/lib64/nagios/plugins'
     }
     default: {
       fail('osfamily not supported')
@@ -157,7 +159,7 @@ class zulip::base {
     mode   => '0640',
   }
 
-  file { '/usr/lib/nagios/plugins/zulip_base':
+  file { "${nagios_plugins_dir}/zulip_base":
     require => Package[$nagios_plugins],
     recurse => true,
     purge   => true,

puppet/zulip/manifests/nagios.pp

@@ -3,11 +3,17 @@
 #
 # Depends on zulip::base to have installed `nagios-plugins-basic`.
 class zulip::nagios {
-  $nagios_plugins = $::osfamily ? {
-    'debian' => 'nagios-plugins-basic',
-    'redhat' => 'nagios-plugins',
+  case $::osfamily {
+    'debian': {
+      $nagios_plugins = 'nagios-plugins-basic'
+      $nagios_plugins_dir = '/usr/lib/nagios/plugins'
+    }
+    'redhat': {
+      $nagios_plugins = 'nagios-plugins'
+      $nagios_plugins_dir = '/usr/lib64/nagios/plugins'
+    }
   }
-  file { '/usr/lib/nagios/plugins/zulip_nagios_server':
+  file { "${nagios_plugins_dir}/zulip_nagios_server":
     require => Package[$nagios_plugins],
     recurse => true,
     purge   => true,

puppet/zulip/manifests/postgres_appdb_base.pp

@@ -63,7 +63,7 @@ class zulip::postgres_appdb_base {
     mode    => '0644',
     source  => 'puppet:///modules/zulip/postgresql/zulip_english.stop',
   }
-  file { '/usr/lib/nagios/plugins/zulip_postgres_appdb':
+  file { "${zulip::postgres_common:nagios_plugins_dir}/zulip_postgres_appdb":
     require => Package[$zulip::postgres_common::nagios_plugins],
     recurse => true,
     purge   => true,

puppet/zulip/manifests/postgres_common.pp

@@ -2,6 +2,7 @@ class zulip::postgres_common {
   case $::osfamily {
     'debian': {
       $nagios_plugins = 'nagios-plugins-basic'
+      $nagios_plugins_dir = '/usr/lib/nagios/plugins'
       $postgresql = "postgresql-${zulip::base::postgres_version}"
       $postgres_packages = [
         # The database itself
@@ -23,6 +24,7 @@ class zulip::postgres_common {
     }
     'redhat': {
       $nagios_plugins = 'nagios-plugins'
+      $nagios_plugins_dir = '/usr/lib64/nagios/plugins'
       $postgresql = "postgresql${zulip::base::postgres_version}"
       $postgres_packages = [
         $postgresql,
@@ -61,7 +63,7 @@ class zulip::postgres_common {
       creates => '/etc/logrotate.d/postgresql-common.disabled',
     }
   }
-  file { '/usr/lib/nagios/plugins/zulip_postgres_common':
+  file { "${nagios_plugins_dir}/zulip_postgres_common":
     require => Package[$nagios_plugins],
     recurse => true,
     purge   => true,