Comment 3 for bug 1580076

Hello Giulio, this error happens not only in upgrades jobs, the error is
(resources.server1: Went to status ERROR due to "Message: No valid host was found. There are not enough hosts available., Code: 500") in my case when creating/deleting overcloud several times, maybe 7 or 8 times.

In http://logs.openstack.org/50/313650/2/check-tripleo/gate-tripleo-ci-f22-upgrades/c8c0034/console.html (2016-05-09 15:56:18.569 )

I had to remove/reinstall the undercloud/overcloud to overcome this, I will debug the error and put more info about it.