ironic/doc/source/admin/drivers.rst

Drivers, Hardware Types, and Hardware Interfaces for Ironic

Generic Interfaces

interfaces/boot interfaces/deploy

Hardware Types

drivers/idrac drivers/ilo drivers/intel-ipmi drivers/ipmitool drivers/irmc drivers/redfish drivers/snmp drivers/fake

Changing Hardware Types and Interfaces

Hardware types and interfaces are enabled in the configuration as described in /install/enabling-drivers. Usually, a hardware type is configured on enrolling as described in /install/enrollment:

baremetal node create --driver <hardware type>

Any hardware interfaces can be specified on enrollment as well:

baremetal node create --driver <hardware type> \
    --deploy-interface direct --<other>-interface <other implementation>

For the remaining interfaces, the default value is assigned as described in hardware_interfaces_defaults. Both the hardware type and the hardware interfaces can be changed later via the node update API.

Changing Hardware Interfaces

Hardware interfaces can be changed by the following command:

baremetal node set <NODE> \
    --deploy-interface direct \
    --<other>-interface <other implementation>

The modified interfaces must be enabled and compatible with the current node's hardware type.

Changing Hardware Type

Changing the node's hardware type can pose a problem. When the driver field is updated, the final result must be consistent, that is, the resulting hardware interfaces must be compatible with the new hardware type. This will not work:

baremetal node create --name test --driver fake-hardware
baremetal node set test --driver ipmi

This is because the fake-hardware hardware type defaults to fake implementations for some or all interfaces, but the ipmi hardware type is incompatible with them. There are three ways to deal with this situation:

1. Provide new values for all incompatible interfaces, for example:

   baremetal node set test --driver ipmi \
       --boot-interface pxe \
       --deploy-interface direct \
       --management-interface ipmitool \
       --power-interface ipmitool

2. Request resetting some of the interfaces to their new defaults by using the --reset-<IFACE>-interface family of arguments, for example:

   baremetal node set test --driver ipmi \
       --reset-boot-interface \
       --reset-deploy-interface \
       --reset-management-interface \
       --reset-power-interface

3. Request resetting all interfaces to their new defaults:

   baremetal node set test --driver ipmi --reset-interfaces

   You can still specify explicit values for some interfaces:

   baremetal node set test --driver ipmi --reset-interfaces \
       --deploy-interface direct

Static boot order configuration

Some hardware is known to misbehave when changing the boot device through the BMC. To work around it you can use the noop management interface implementation with the ipmi and redfish hardware types. In this case the Bare Metal service will not change the boot device for you, leaving the pre-configured boot order.

For example, in the case of the pxe-boot:

1. Via any available means configure the boot order on the node as follows:

   1. Boot from PXE/iPXE on the provisioning NIC.

      Warning

      If it is not possible to limit network boot to only provisioning NIC, make sure that no other DHCP/PXE servers are accessible by the node.

   2. Boot from the hard drive.

2. Make sure the noop management interface is enabled, for example:

   [DEFAULT]
   enabled_hardware_types = ipmi,redfish
   enabled_management_interfaces = ipmitool,redfish,noop

3. Change the node to use the noop management interface:

   baremetal node set <NODE> --management-interface noop