Thanks Brian. I was able to use <CounterVec>.withLabels(...).Add(0) in the beginning to export the 0 value.
On Wednesday, May 3, 2023 at 4:55:03 PM UTC-4 Brian Candler wrote: > Confirmed. Take the "Basic Example" from here: > > https://pkg.go.dev/github.com/prometheus/client_golang/prometheus#hdr-A_Basic_Example > > Remove the .Inc() from the "m.hdFailures.With" line > > $ curl -fsS localhost:8080/metrics | grep hd_errors > # HELP hd_errors_total Number of hard-disk errors. > # TYPE hd_errors_total counter > hd_errors_total{device="/dev/sda"} 0 > > On Wednesday, 3 May 2023 at 21:51:53 UTC+1 Brian Candler wrote: > >> Is it a CounterVec you're using? >> >> If so, I think that v.With(labels...) should be sufficient to initialise >> it. >> >> On Wednesday, 3 May 2023 at 20:52:57 UTC+1 Johny wrote: >> >>> Yes golang. I am using promauto to auto register my metrics with the >>> default registry at the time of initialization. >>> >>> https://pkg.go.dev/github.com/prometheus/[email protected]/prometheus/promauto >>> >>> <https://pkg.go.dev/github.com/prometheus/[email protected]/prometheus/promauto> >>> >>> Do you recall a way to force export it always with a default initial >>> value of 0? >>> >>> On Wednesday, May 3, 2023 at 3:33:38 PM UTC-4 Brian Candler wrote: >>> >>>> Yes, you should be able to create a counter which publishes its initial >>>> value of zero. I'm fairly sure I've done this with the Golang client some >>>> time in the past. What language and client library are you using? >>>> >>>> You'll have to initialise the counters explicitly. If the first time >>>> the client library knows about the counter is when you increment it, then >>>> clearly it won't be able to export it until then. >>>> >>>> On Wednesday, 3 May 2023 at 20:19:27 UTC+1 Johny wrote: >>>> >>>>> I need to sum two separate counter metrics capturing request failures >>>>> to compute ratio of error requests for an alerting signal. The code >>>>> initializing and setting these counters sits in separate modules >>>>> preventing >>>>> reuse of one counter. >>>>> >>>>> The problem is when one of the counter is never incremented after a >>>>> restart, service never exports the data point, prometheus will never get >>>>> the time series and the summation will return nothing. >>>>> >>>>> Is there a way to "force" publish a counter to 0 always on service >>>>> reboot during counter initialization to avoid this problem? >>>>> >>>>> (fail_count1 + fail_count2) / (total_count1 + total_count2) >>>>> >>>>> -- 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/55e76e23-6a34-4aca-b81b-90a1366fb2cen%40googlegroups.com.
