Export ACPI metrics

[shachaf]

There are useful ACPI metrics such as current battery charge that it would be nice to get from node_exporter. It looks like they're in /sys/class/power_supply on my computer (in Linux).

[SuperQ]

Sounds like a good idea to me. It looks like this is documented in the kernel.

Typically we start by adding the required support to the Prometheus procfs library.

[shaardie]

I would love to start working on this. I will try to create a Pull Request for procfs.

[shachaf]

For what it's worth I wrote a collector for my own use -- http://slbkbs.org/power_supply_linux.go -- it still needs work but maybe it can be useful for you.

[SuperQ]

It would be nice to get this done before FOSDEM 2019. This would allow us to monitor the laptops farm we use for video encoding.

[shaardie]

The code is nearly done. It is based on the Pull Request I created for procfs. So I am waiting for this to be merged.

[RichiH]

PR merged, closing issue.