tree 957a55bad2fe622eb69eb493ce27b23c328639d8
parent 4ec1f85148b244f0ecc8bc1548c58810b1f90357
author Jaromir Wysoglad <jwysogla@redhat.com> 1727276534 -0400
committer Jaromir Wysoglad <jwysogla@redhat.com> 1728324048 -0400

Use server_group in Prom autoscaling scenario

Thanks to the recent developments in ceilometer and sg-core,
we can use server_group for grouping instances from the same
stack for autoscaling purposes. This is how the instances are
grouped in gnocchi based autoscaling. It's much easier for the
users to configure and it should be the prefered option when using
autoscaling.

For backwards compatibility with current stable branches I
added a "autoscaling_instance_grouping" config option. The old
way ("prefix") of instance grouping is used by default and so
tempest tests will continue working on stable branches. By
setting the option to "metadata", the new way of instance
grouping will be used. I'll set this setting in .zuul.yaml
of all telemetry repositories on master branches in follow-up
patches.

Change-Id: I2770e9d47b914941f938f63d92ab7868fe09d7b9