cronus one of the departmental DNS, NIS and time servers will be down for a needed reboot to activate changes delivered by some RHEL patches from 6:45-7:00am.
UPDATE
[2019-05-09 07:00:00 | mark kraitchman]
cronus is back up.
rhea is back up. Maintenance has been completed.
Resolved as of 2019-05-09 07:00:00