Open Stack

Hello everyone.

Does someone do regression testing before performing upgrade (within 
same major version)? How do you do this? Do you know any tools for such 
tests? I started to research this area, and I see three 
openstack-specific tools: rally (with reduction of load to normal 
levels), tempest (can it be used by operators?) and granade.

If you use any of tools, how do you feel about them? Are they worth time 
spent?


Thanks!