This is not a regression. Checked with our metrics deploying script that the hawkular hostname we previously used is "hawkular-metrics.$Subdomain" which contains hyphen instead of underscore. It's my mistake. I have removed keyword regression, and closing this as by design. Thanks for the explanation. Thanks, Xia
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2016:1064