Comment 2 for bug 1637961

metricd is continuosly trying to contact redis server, but redis is down. Fails at start with this error

22419:M 31 Oct 07:16:30.624 # Opening Unix socket: bind: Permission denied

as seen in

http://logs.openstack.org/periodic/periodic-tripleo-ci-centos-7-ovb-ha/0ae3179/logs/overcloud-controller-0/var/log/redis/redis.txt.gz