Github user mike-jumper commented on a diff in the pull request:
https://github.com/apache/guacamole-server/pull/160#discussion_r175249402
--- Diff: src/guacd/systemd/guacd.service.in ---
@@ -0,0 +1,11 @@
+[Unit]
+Description=Guacamole Server
+Documentation=man:guacd(8)
+
+[Service]
+User=daemon
+ExecStart=@sbindir@/guacd -f
--- End diff --
Googling around a bit, definitely seems the way of things for systemd:
http://www.mikeperham.com/2014/09/22/dont-daemonize-your-daemons/---
