It works! Thanks so much! My actual query ended up being:
up{job="cadvisor"} == 1 unless on(node) container_last_seen{name="grafana"}
On Thursday, April 23, 2020 at 3:24:43 PM UTC-5, Julien Pivotto wrote:
>
> On 23 Apr 13:20, Jared Bischof wrote:
> > I have a question about using the labels from one metric to query for
> the
> > presence/absence of another metric.
> >
> > For example, I have some nodes that (when they are online) emit this
> metric:
> >
> > up{name="node1"} 1
> > up{name="node2"} 1
> >
> > At the same time, I am propagating cadvisor metrics from these nodes:
> >
> > container_last_seen{name="grafana", node="node1"} 1587672314
> > container_last_seen{name="fluentd", node="node1"} 1587672284
> > container_last_seen{name="grafana", node="node2"} 1587672251
> >
> > In this case, I would like to create an alert that triggers because
> "node2"
> > is up but the container_last_seen metric is absent for grafana on node2.
> Is
> > this possible to do?
>
> Can you try something along:
>
> up{job="node"} == 1 unless on (instance) group_right()
> container_last_seen{name="grafana"}
>
> >
> > Thanks.
> >
> > --
> > 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] <javascript:>.
> > To view this discussion on the web visit
> https://groups.google.com/d/msgid/prometheus-users/fb59b518-cf29-41c4-a289-b4e9542546e0%40googlegroups.com.
>
>
>
>
> --
> (o- Julien Pivotto
> //\ Open-Source Consultant
> V_/_ Inuits - https://www.inuits.eu
>
--
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/f7bca249-9163-4df6-9119-46c6c667464d%40googlegroups.com.
