Thanks Brain.
That worked like a charm.
On Tuesday, 5 October 2021 at 10:35:48 UTC+2 Brian Candler wrote:
> > severity: '{{ .CommonLabels.severity }}'
>
> Ah right, so this is actually a templating problem. You want to have a
> default value when *expanding the template*.
>
> I don't do much with go templating, but it looks like the "or" function is
> what you want:
> https://pkg.go.dev/text/template#hdr-Functions
>
> That page is linked from
> https://prometheus.io/docs/prometheus/latest/configuration/template_reference/
> Googling for "go template examples" may help, which includes
> https://play.golang.org/p/Uzpwm1Wt_E
> and I also found an online tester:
> https://camlittle.com/go-template-validation
>
> Try these:
>
> severity: '{{ or .CommonLabels.severity "error" }}'
>
> severity: '{{if .CommonLabels.severity}}{{ .CommonLabels.severity }}{{
> else }}error{{ end }}'
>
> > When the timeseries doesn't have any labels, how does the grouping of
> these alerts are handled.
>
> You can add extra labels in your alerting rule.
>
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