Dear rrdtool Maintainers,
the rrdcached package currently ships an init.d script, and relies on
systemd-sysv-generator(8) to integrate with systemd. This integration
glue code might not stay forever.
Upstream helpfully provides an rrdcached.service file (generated from
etc/rrdcached.service.in). Please install it using dh_installsystemd, to
provide for native systemd integration. It might also be useful to
install rrdcached.socket.
I'll note that upstream provides this file since at least 1.5.3.
Thanks,
Chris