'Match by exported instance in Grafana and Prometheus

I'm working in Grafana and Prometheus and I have Pushgateway exporting some stats for me. In Grafana, I am trying to display these results per machine. My jobs match an entire lab and the instance is related to the machine (ie. ab01:9100, ab02:9100 etc). I try to do '''avg(cpu_usage{exported_instance=~"$instance")''' but that doesn't work and I suspect it is because the exported_instance is ab01 and the instance is ab01:9100. Is there a way for me to match this? Do I need to use a re2 regex?

prometheusgrafanapromqlre2prometheus-node-exporter


Solution 1:[1]

Use the following query:

avg(cpu_usage{exported_instance=~"${instance}.+")

Or something more specific, like:

avg(cpu_usage{exported_instance=~"${instance}:9100")

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Marcelo Ávila de Oliveira

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