Increased the ComputeCount parameter and did a stack update
updates failed with error:
ResourceInError: resources.NovaCompute: Went to status ERROR due to "Message: No valid host was found. , Code: 500"
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (Red Hat OpenStack Platform 16.1.6 bug fix and enhancement advisory), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2021:2097