Comment 0 for bug 1276694

In order to more effectively manage the unlinked and open (lsof +L1) log files descriptors w/o restarting the services, SIGHUP signal should be accepted by every Openstack service.

That would allow, e.g. logrotate jobs to gracefully HUP services after their log files were rotated. The only option we have for now is to force the services restart, quite a poor option from the services continuous accessibility PoV.

Note: according to http://en.wikipedia.org/wiki/Unix_signal
SIGHUP
   ... Many daemons will reload their configuration files and reopen their logfiles instead of exiting when receiving this signal.