feat: enable selecting nameserver by fact

- enable selecting nameservers to use by region, country or all
- set default for nameservers to be region

hieradata/common.yaml

@@ -57,6 +57,7 @@ profiles::base::puppet_servers:
 
 profiles::dns::master::basedir: '/var/named/sources'
 profiles::dns::base::ns_role: 'roles::infra::dns::resolver'
+profiles::dns::base::use_ns: 'region'
 
 profiles::packages::install:
   - bash-completion

site/profiles/manifests/dns/base.pp

@@ -3,16 +3,24 @@ class profiles::dns::base (
   String $ns_role = undef,
   Array  $search  = [],
   Array  $nameservers = ['8.8.8.8', '1.1.1.1'],
+  Enum[
+    'all',
+    'region',
+    'country'
+  ]      $use_ns  = 'all',
 ){
 
   # install bind_utils
   include bind::updater
 
   # if ns_role is set, find all hosts matching that enc_role
-  if $ns_role == undef {
-    $nameserver_array = $nameservers
-  }else{
-    $nameserver_array = query_nodes("enc_role='${ns_role}'", 'networking.ip')
+  $nameserver_array = $ns_role ? {
+    undef   => $nameservers,
+    default => $use_ns ? {
+      'all'     => query_nodes("enc_role='${ns_role}'", 'networking.ip'),
+      'region'  => query_nodes("enc_role='${ns_role}' and region=${facts['region']}", 'networking.ip'),
+      'country' => query_nodes("enc_role='${ns_role}' and country=${facts['country']}", 'networking.ip'),
+    }
   }
 
   # if search is undef, fallback to domainname from facts