On Sat, 23 Oct 2021 at 00:44, Ben Cohee <[email protected]> wrote:
> This has been bothering me for a while, and hopefully someone has a
> solution I am simply overlooking.
>
> I use snmp_exporter to pull power metrics from a bunch of different PDU
> vendors (APC, Raritan, Geist, ServerTech, etc). I have one Prometheus
> scrape job & module per vendor to store all the PDU total power data in a
> metric named pduInputPowerConsumption
>
> All of these vendors report the power in Watts, except for APC - which
> reports in " hundredths of kilowatts (decawatts)"
>
> So throughout all my Grafana dashboards where I have to aggregate the
> total power consumption from all the different PDU vendors I currently just
> multiply the APC metrics by 10 to convert to watts like the other PDUs.
>
> sum(pduInputPowerConsumption{job="apc_pdus"}*10 OR on() vector(0))
> +
> sum(pduInputPowerConsumption{job*!=*"apc_pdus"} OR on() vector(0))
>
>
> Is there a way that I can just scale *10 the apc_pdu collected metric on
> the prometheus backend via the prometheus.yml scrape config along with
> my relabel_configs or metric_relabel_configs?
>
There's not.
> Is there something else I am blatantly overlooking?
>
You could do this with regex_extracts on the snmp_exporter end, by adding a
0 to the strig.
Brian
>
>
>
>
> # Scrape config for snmp_exporter polling APC PDU power metric
> pduInputPowerConsumption
> - job_name: 'apc_pdus'
> scrape_interval: 3m # Set the SNMP scrape inverval for every 3 mins
> scrape_timeout: 45s # Set the scrape timeout to 45 seconds (3
> retries = 2.25 mins)
> metrics_path: /snmp
> params:
> module: [apc_pdus]
> file_sd_configs:
> - files:
> - /etc/prometheus/snmp-targets/apc_pdus_*.json
> # Attempt to re-read files every five minutes.
> refresh_interval: 5m
> relabel_configs:
> - source_labels: [__meta_filepath]
> regex: '.*_(\w{4})\.json'
> replacement: $1
> target_label: site
> - source_labels: [__address__]
> target_label: ip_address
> - source_labels: [__address__]
> target_label: __param_target
> - target_label: __address__
> replacement: 10.0.XX.XX:9116 # SNMP exporter.
>
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>
--
Brian Brazil
www.robustperception.io
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