Open Stack

Hey, all.  We're currently running (I hope you're sitting) Juno, and 
we're thinking about rolling out a new OpenStack version.  My boss has 
asked me if CentOS 7.9
a) would be supported for control/compute nodes, and, if so, if there 
are any long-term potential issues, and
b) if there would be any concerns about versions of client OSes.

Thanks!

-Ken