Adds --prometheus-server-token-file flag to support authenticating to
a prometheus server using a bearer token file.
Adds --additional-prometheus-servers=<name>=<url>,... and
--additional-prometheus-server-token-files=<name>=<url>,... to
support additional servers through the new "prometheus-server-alias"
HPA annotation
Signed-off-by: Antoine Deschênes <antoine@antoinedeschenes.com>
This commit adds two new collectors to the adapter:
- ClusterScalingScheduleCollector; and
- ScalingScheduleCollector
Also, it introduces the required collectors plugins, initialization
logic in the server startup, documentation and deployment example
(including the helm chart). A new config flag is created,
`-scaling-schedule`, and allows to enable and to disable the collection
of such metrics. It's disabled by default.
This collectors are the required logic to utilise the CRDs introduced in
the #284 pull request. It makes use of the kubernetes go-client
implementations of a [Store][0] and [Reflector][1].
[0]: https://pkg.go.dev/k8s.io/client-go/tools/cache#Store
[1]: https://pkg.go.dev/k8s.io/client-go/tools/cache#Reflector
Signed-off-by: Jonathan Juares Beber <jonathanbeber@gmail.com>
Testing indicates that metrics API v1beta2 is not a suitable drop-in replacement for v1beta1, and v1 does not exist at this time.
Signed-off-by: Henry Agnew <henryd.agnew@gmail.com>
Alex Alexandrowitz