ipmi_dcmi_command_success is always 0 on Huawei 2288H V5 (Purley)

[przemeklal]

On Huawei 2288H V5, ipmi-dcmi doesn't work, most likely it's related to this bug: prometheus-community/ipmi_exporter#75

We can silence it forever in Prometheus but would it be possible for the charm to first probe if ipmi-dcmi is supported by the hardware and enable only if it is?

[przemeklal]

And I confirmed that ipmi-dcmi doesn't work indeed on this hardware:

# ipmi-dcmi --get-system-power-statistics
ipmi_cmd_dcmi_get_power_reading: command invalid or unsupported

Maybe running something like

sudo ipmi-dcmi --get-dcmi-capability-info
ipmi_cmd_dcmi_get_dcmi_capability_info_supported_dcmi_capabilities: bad completion code

could help detect if IPMI DCMI is supported or not.

[jneo8]

I am thinking about what should we do after detect this.
Do you think disable ipmi-dcmi make sense to us?

[peppepetra]

I think disabling ipmi_dcmi collector makes sense, since the hw is not supporting it.