I have tried, but it didn't work, thank you all the same, maybe I should read the source code deeply.
在2022年10月18日星期二 UTC+8 17:22:37<Brian Candler> 写道： > 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/3010874a-f821-45c5-857d-4ed1a6591b2en%40googlegroups.com.
