Merge pull request voxpupuli#413 from bastelfreak/systemd3

migrate prometheus service file erb->epp

manifests/config.pp

@@ -180,7 +180,13 @@
     }
     'systemd': {
       systemd::unit_file {'prometheus.service':
-        content => template('prometheus/prometheus.systemd.erb'),
+        content => epp("${module_name}/prometheus.systemd.epp", {
+          'user'           => $prometheus::server::user,
+          'group'          => $prometheus::server::group,
+          'daemon_flags'   => $daemon_flags,
+          'max_open_files' => $max_open_files,
+          'bin_dir'        => $prometheus::server::bin_dir,
+        }),
         notify  => $notify,
       }
       if versioncmp($facts['puppetversion'],'6.1.0') < 0 {

templates/prometheus.systemd.epp

@@ -0,0 +1,26 @@
+<%- | String[1] $user,
+      String[1] $group,
+      Array[String] $daemon_flags,
+      Optional[Integer] $max_open_files,
+      Stdlib::Absolutepath $bin_dir,
+| -%>
+# THIS FILE IS MANAGED BY PUPPET
+[Unit]
+Description=Prometheus Monitoring framework
+Wants=basic.target
+After=basic.target network.target
+
+[Service]
+User=<%= $user %>
+Group=<%= $group %>
+ExecStart=<%= $bin_dir %>/prometheus \
+  <%= $daemon_flags.join(" \\\n  ") %>
+ExecReload=/bin/kill -HUP $MAINPID
+KillMode=process
+Restart=always
+<% if $max_open_files { -%>
+LimitNOFILE=<%= $max_open_files %>
+<% } -%>
+
+[Install]
+WantedBy=multi-user.target