This was discussed a while ago in the dev summit, see https://docs.google.com/document/d/11LC3wJcVk00l8w5P3oLQ-m3Y37iom6INAMEu2ZAGIIE/edit?tab=t.0#heading=h.ir9z26welaum It's also on the list to be discussed again: https://docs.google.com/document/d/1uurQCi5iVufhYHGlBZ8mJMK_freDFKPG0iYBQqJ9fvA/edit?tab=t.0#heading=h.7jp762fwzkeo
Afaict this feature is waiting for someone to gather use cases and outline the different approaches and their trade-offs. Once we have a document on this, ideally in https://github.com/prometheus/proposals the dev summit can form a concensus. The first dev summit discussion has some more context on what has been proposed before, especially when it comes to debugging and usability. Those seem to be the tricky bits. The contribution of a designproposal would be more then welcome. On Fri, Sep 19, 2025 at 4:06 PM 'Brian Candler' via Prometheus Users <[email protected]> wrote: > > I had an idea. Now that there is the "keep_firing_for" feature, it would be > possible to use this for alert hysteresis if you had a second expression to > cancel the alert. > > For example: > > expr: disk_space_used > 0.8 > keep_firing_for: 1d > cancel_expr: disk_space_used < 0.7 > > Then your alert starts firing at 80%, and stops firing at 70% (or after 1 day > if under 80%) > > Anyway, I just thought the idea was worth a mention! > > -- > 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 visit > https://groups.google.com/d/msgid/prometheus-users/42b6f0d8-9852-4b23-ab46-e8f64a097bedn%40googlegroups.com. -- 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 visit https://groups.google.com/d/msgid/prometheus-users/CAPUOVPkVfuyCPuckLZoOb4FbPm%3D04WsW19cD1Yev4La2CaKexg%40mail.gmail.com.
