Negative values with Rate function used for CPU usage metric by node_exporter

[isha girdhar]

Hi All,

We are using node exporter to pull system metrics into our Prometheus

and using this formula
100 - (avg by (instance) (irate(node_cpu{mode="idle"}[5m])) * 100) to calculate percentage of CPU used.

But we are getting negative values like -100000%

Any suggestions?

[Brian Brazil]

It sounds like there's something very wrong with your kernel. I presume this is a VM, and if so with which provider?

--

Brian Brazil

www.robustperception.io

[isha girdhar]

Yes its VM. Oracle BareMetal VM Standard.