Events with unexpected minion ids

[quadniko]

Hello,

When looking at Salt Master events, I noticed a number of unexpected minion ids. The unexpected ids have the form .<fqdn>.<hash> (note the leading dot), where <hash> is something like Kk0E0Q, and <fqdn> is an expected minion id.

There does not seem to be a such an ID for every expected Minion, but there's a fair number of them.

I am consuming the events as Prometheus metrics using salt-exporter and I'm looking at salt_health_last_heartbeat specifically (not sure if that matters though, I wouldn't expect the exporter to touch or create minion ids in any form).

Could someone explain where these ids come from, and what their semantics are? I could not find anything about this in the user's guide.

Thanks!