"so the curl output looks correct. When you say you backported your

servers, what exactly does that mean?"

It means : Servers are set back in time before the expiration of the commercial certificate, this permits Openstack to work.

When set back in time, the commercial certificate works because it is still valid.

My idea is to reconfigure my openstack to use a self-signed certificate that covers one year for example, so I created a the self-signed certificate while my servers are in the past, this self-signed will hold one year, so if I can deploy it I can bring my servers back to the current time.

Regards.