CloudKitty - Rating service guide¶
CloudKitty is the Openstack service used to rate your platform usage. As a rating service, CloudKitty does not provide billing services such as generating a bill to send to your customers every month.
However, it provides you the building bricks you can use to build your own billing service upon internally.
Because cloudkitty is a flexible rating service, it’s highly customizable while still offering a generic approach to the rating of your platform.
It lets you choose which metrics you want to rate, from which datasource and where to finally store the processed rate of those resources.
This document will explain how to use the different features available and that Kolla Ansible supports.
See the CloudKitty documentation for further information.
CloudKitty Collector backend¶
CloudKitty natively supports multiple collector backends.
By default Kolla Ansible uses the Gnocchi backend. Using data collected by Prometheus is also supported.
The configuration parameter related to this option is
To use the Prometheus collector backend:
CloudKitty Fetcher Backend¶
CloudKitty natively supports multiple fetcher backends.
By default Kolla Ansible uses the
keystone backend. This can be changed
Kolla Ansible also supports the
prometheus backend type, which is
configured to discover scopes from the
id label of the
openstack_identity_project_info metric of OpenStack exporter.
You will need to provide extra configuration for unsupported fetchers in
Cloudkitty Storage Backend¶
As for collectors, CloudKitty supports multiple backend to store ratings. By default, Kolla Ansible uses the InfluxDB based backend.
Another famous alternative is Elasticsearch and can be activated in Kolla
Ansible using the
cloudkitty_storage_backend configuration option in
globals.yml configuration file:
You can only use one backend type at a time, selecting elasticsearch will automatically enable Elasticsearch deployment and creation of the required CloudKitty index.