Hi Christian, Got it. Thanks for your prompt response.
在 2020年5月18日星期一 UTC+8下午7:17:56，Christian Hoffmann写道： > > Hi, > > On 5/18/20 12:38 PM, zichen chuh wrote: > > > https://prometheus.io/docs/prometheus/latest/configuration/alerting_rules/ > : > > > >> For pending and firing alerts, Prometheus also stores synthetic time > > series of the form ALERTS{alertname="<alert name>", > > alertstate="pending|firing", <additional alert labels>}. The sample > > value is set to 1 as long as the alert is in the indicated active > > (pending or firing) state, and the series is marked stale when this is > > no longer the case. > > > > Can I ask what does stale mean? > > Does it mean the series data is deleted from the database? > No, the old values stay and it's more like a marker which denotes: this > used to be there but is now gone. > > > If not, can I query these stale data > I don't think there are standard APIs for doing that. You can probably > find out when directly analyzing the data on disk. > > > and how can I mark a serie stale > > by myself? > I don't think so. It's supposed to be an internal implementation detail. > Can you elaborate what you are trying to accomplish? > > > Is there more documents about `stale`? > > Maybe this blog post, the slides and the video provides more insight: > https://www.robustperception.io/staleness-and-promql > > https://de.slideshare.net/brianbrazil/staleness-and-isolation-in-prometheus-20-promcon-2017 > > https://www.youtube.com/watch?v=GcTzd2CLH7I > > Kind regards, > Christian > -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/2f5eddc2-57a8-4bc8-8c7b-d04e5e9a9f3a%40googlegroups.com.
