This is a custom prometheus exporter to provide the available capacity as a metric:
$ uv run ./zuul-capacity.py
usage: zuul-capacity.py [-h] [--nodepool FILE] [--port PORT]
options:
-h, --help show this help message and exit
--nodepool FILE The list of providers
--port PORT The prometheus scrap target listening port
To run this service, you must provide a nodepool configuration and a clouds.yaml.