feat: add management of /etc/hosts

- add class to manage the /etc/hosts file
- add static hosts to /etc/hosts file via hiera array/hash

site/profiles/manifests/base.pp

@@ -26,6 +26,9 @@ class profiles::base (
   # include admin scripts
   include profiles::base::scripts
 
+  # include admin scripts
+  include profiles::base::hosts
+
   # include the python class
   class { 'python':
     manage_python_package => true,

site/profiles/manifests/base/hosts.pp

@@ -0,0 +1,30 @@
+# basic class to manage the /etc/hosts file from a template
+#
+# @param additional_hosts:
+#   An array of hashes with ip/hostname/aliases
+#   Aliases is an array in case there is a need for multiple aliases
+#
+#   class { 'profiles::base::hosts':
+#     additional_hosts => [
+#       { 'ip' => '192.168.0.10', 'hostname' => 'server1.example.com', 'aliases' => ['server1'] },
+#       { 'ip' => '192.168.0.11', 'hostname' => 'server2.example.com' },
+#       # ... and so on
+#     ],
+#   }
+#
+class profiles::base::hosts (
+  Array[Hash] $additional_hosts = []
+) {
+
+  $fqdn = $facts['networking']['fqdn']
+  $hostname = $facts['networking']['hostname']
+
+  # Ensure the file exists and manage its content
+  file { '/etc/hosts':
+    ensure  => file,
+    owner   => 'root',
+    group   => 'root',
+    mode    => '0644',
+    content => template('profiles/base/hosts.erb'),
+  }
+}

site/profiles/templates/base/hosts.erb

@@ -0,0 +1,15 @@
+# /etc/hosts file managed by Puppet
+
+# The following lines are desirable for IPv4 capable hosts
+127.0.0.1 <%= @fqdn %> <%= @hostname %>
+127.0.0.1 localhost.localdomain localhost
+127.0.0.1 localhost4.localdomain4 localhost4
+
+# The following lines are desirable for IPv6 capable hosts
+::1 <%= @fqdn %> <%= @hostname %>
+::1 localhost.localdomain localhost
+::1 localhost6.localdomain6 localhost6
+
+<% @additional_hosts.each do |host| -%>
+<%= host['ip'] %>  <%= host['hostname'] %>  <%= host['aliases'].join(' ') if host['aliases'] %>
+<% end -%>