Grafana configuration not suitable for oAuth
The current configuration of grafana doesn't allow oAuth configuration. All callback requests go to localhost. This can be fixed by editing grafanas config map or the grafana.ini config file.
In order for the callback to work, the server settings need to be edited.
[server]
domain = grafana.oas.example.net
root_url = https://grafana.oas.example.net/
[...]
Grafana settings documentation
hotfix via
kubectl edit configmaps -n oas oas-test-prometheus-grafana
Edited by Mark