The rc.d filebeat script should probably pass the -f flag to daemon command, which would send stdout and stderr to /dev/null. Because it's missing, at lest SaltStack is hanging indefinitely on service start/restart. See https://github.com/saltstack/salt/issues/47445:
> I've found the problem. The rc.d script was not written properly. The command /usr/sbin/daemon should have '-f' flag to redirect stdout to /dev/null.
This should be fixed via #249109
Fixed via #249109