Did it work? Which approach did you use? On Tuesday, 18 October 2022 at 07:48:06 UTC+1 [email protected] wrote:
> Thanks Brain, for your help. > > 在2022年10月17日星期一 UTC+8 16:45:17<Brian Candler> 写道： > >> > Hi, everyone. I want to drop some specific metrics by its value or its >> label value. For example: >> > 1. the temperature metrics which values are 65535 meaning it's invalid >> > 2. the power metrics which "entPhysicalClass" label vale are not "6" >> and "9" >> >> Metric relabeling >> <https://prometheus.io/docs/prometheus/latest/configuration/configuration/#metric_relabel_configs> >> >> can be used to drop specific timeseries in the scrape response by label >> value, but not by metric value. >> >> The only way I can think of dropping by metric value (without changing >> the exporter output) is to use a recording rule >> <https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/> >> to >> make a modified version of the timeseries, e.g. >> >> expr: some_temperature != 65535 >> >> If you are happy to hack snmp.yml, you could try something like this >> (untested): >> >> regex_extracts: >> "": >> - value: NaN >> regex: ^65535$ >> - value: $1 >> regex: ^(.+)$ >> >> I don't know if it's allowed to use "NaN" as a value here: source code >> <https://github.com/prometheus/snmp_exporter/blob/v0.20.0/collector.go#L426> >> suggests it should work <https://go.dev/play/p/_2ndwtiqbx3>. However, a time >> series consisting of NaNs >> <https://www.robustperception.io/get-thee-to-a-nannary/> is not the same >> as an empty/missing timeseries. So depending on your requirements, it may >> be better to do >> >> regex_extracts: >> "": >> - value: INVALID >> regex: ^65535$ >> - value: $1 >> regex: ^(.+)$ >> >> although this will cause snmp_exporter to generate noisy logs at debug >> level. >> >> Aside: if you look through the examples you can see regex being used to >> divide a value by 10 (or by 100), e.g.: >> >> regex_extracts: >> "": >> - value: $1.$2 >> regex: ^(?:(.*)(.))$ >> >> > I write the snmp.yml without generator, didn't find a specification of >> its syntax, does somebody know where it is? >> >> >> https://github.com/prometheus/snmp_exporter/blob/v0.20.0/generator/FORMAT.md >> >> Having said that, you may just want to run the generator and look at its >> output to see what it emits :-) >> >> On Monday, 17 October 2022 at 08:01:08 UTC+1 [email protected] wrote: >> >>> Hi, everyone. I want to drop some specific metrics by its value or its >>> label value. For example: >>> 1. the temperature metrics which values are 65535 meaning it's invalid >>> 2. the power metrics which "entPhysicalClass" label vale are not "6" and >>> "9" >>> >>> I write the snmp.yml without generator, didn't find a specification of >>> its syntax, does somebody know where it is? >>> >>> Appreciate for any help ：） >>> >> -- 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/9229d5d7-0873-4378-b81a-e007dd397daen%40googlegroups.com.
