Example systemd unit files for agent, proxies and servers are enclosed with this ticket.
"PrivateTmp" requires systemd versions 38 or newer, see http://fedoraproject.org/wiki/Features/ServicesPrivateTmp. It is most useful for servers and proxies, set up to handle fping files in /tmp.
Users are different for agent and server/proxy, due to
Dependency on database backends varies for servers and proxies. "After" must therefore be adapted.