Provide a way for daemons to (optionally) run in the foreground.

Many people are now using daemon supervisors from packages like daemontools, runit, supervisord, and launchd. While a few supervisors may provide some hackery to supervise forking daemons, supervisors require daemons to run in the foreground for full-featured monitoring. For those of us who supervise every daemon, this is a very important and possibly a deal-breaking issue for using zabbix.

zabbix_server, zabbix_proxy, and zabbix_agentd need a simple (non-default) option that allows their parent processes to stay in the foreground. (Closing stdout and stderr is optional as most supervisors log this output.)

I suggest the -f|--foreground getopt-style option.

Thanks very much for considering this.