metal-bmc is responsible to gather data from machines via the out of band interfaces and report them back to the metal-api.
It also passes commands to the machines like power on/off, led on/off, firmware update etc.
Access to the console of a machine is also terminated here in conjunction with the metal-console running in the control-plane.
More details per package as follows:
Reporter reports the ip addresses that are leased to ipmi devices together with their machine uuids to the metal-api.
Therewith it is possible to have knowledge about new machines very early in the metal-api and also get knowledge about possibly changing ipmi ip addresses.
metal-bmc parses the DHCPD lease file and reports the mapping of machine uuids to ipmi ip address to the metal-api.
The bmc package serves the following:
Commands from the metal-api are passed via nsq and executed either through redfish or ipmi against the out-of-band interface of a machine.
Firmware updates the firmware of the BIOS and the BMC of a machine.
Console forwards the the serial console access terminated in metal-console to the machine.