Attached file in previous message was broken:
On Thursday, February 25, 2021 at 11:32:52 AM UTC+1 Constantin Clauzel
wrote:
> Hey,
>
> Since this morning I'm experiencing some very weird behaviors with one of
> my counters.
> It randomly stays at zero for an hour, then appears again, then again to
> zero.
>
> What is strange is that all other metrics are showing up, meaning
> prometheus can reach the endpoint, and when I check the endpoint is has the
> missing counter in it.
>
> Is there any possible reason that could explain why a counter suddenly
> only returns zeros, and then starts working again for no apparent reason?
>
> Please find attached how the graphs look.
>
> The query that returns all zeros:
> sum(increase(appbackend_alerts{metric="TEMP", type="TOO_HIGH"}[5m]))
> sum(increase(appbackend_alerts{metric="HUMI", type="TOO_HIGH"}[5m]))
>
> The prometheus endpoint returns all those appbackend_alerts lines:
>
> appbackend_alerts{boxID="0",controllerID="xxxxxxxxx",metric="HUMI",type="TOO_HIGH"}
>
> 1
> appbackend_alerts{boxID="0",controllerID="xxxxxxxxx",metric="HUMI",type="TOO_LOW"}
>
> 1
> appbackend_alerts{boxID="0",controllerID="xxxxxxxxx",metric="TEMP",type="TOO_LOW"}
>
> 1
> appbackend_alerts{boxID="0",controllerID="xxxxxxxxx",metric="HUMI",type="TOO_LOW"}
>
> 1
> appbackend_alerts{boxID="0",controllerID="xxxxxxxxx",metric="HUMI",type="TOO_HIGH"}
>
> 1
> appbackend_alerts{boxID="0",controllerID="xxxxxxxxx",metric="HUMI",type="TOO_LOW"}
>
> 1
> appbackend_alerts{boxID="0",controllerID="xxxxxxxxx",metric="HUMI",type="TOO_LOW"}
>
> 1
> appbackend_alerts{boxID="0",controllerID="xxxxxxxxx",metric="HUMI",type="TOO_HIGH"}
>
> 1
> [ ... And may more ]
>
> Thanks,
> Constantin
>
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