Func tests need manual intervention to recycle grafana:grafana-source<->prometheus relation

[Alvaro Uria]

Grafana only checks if local dashboards (templates) should be imported when the relation with Prometheus is triggered (grafana-source interface).

During functional tests, a fresh deploy occurs and the prometheus:target<->prometheus-ceph-exporter relation can't populate Ceph metrics quick enough. This causes the Grafana<->Prometheus relation to be unable to import the Ceph dashboards (ceph_* metrics are missing) which hence causes func tests to fail (no more than 4 dashboards).

As a workaround:
* juju remove-relation -m zaza-XXXX grafana:grafana-source prometheus
* watch juju add-relation -m zaza-XXXX grafana:grafana-source prometheus

Note: "watch" because "add-relation" will be retried until the "remove-relation" hooks are finished.

[Eric Chen (eric-chen)]

This charm is no longer being actively maintained. Please consider using the new Canonical Observability Stack instead.
(https://charmhub.io/topics/canonical-observability-stack)
I will close this issue