prometheus_tsdb_exemplar_last_exemplars_timestamp_seconds Gauge
The timestamp of the oldest exemplar stored in circular storage. Useful to check for what timerange the current exemplar buffer limit allows. This usually means the last timestampfor all exemplars for a typical setup. This is not true though if one of the series timestamp is in future compared to rest series.
Source
We have looked everywhere, but couldn't find the application/exporter exposing this metric.
Alerts
We do not have any alerts associated with this metric in our collection.
Dashboards
We do not have any dashboards associated with this metric in our collection.