The following drivers support setting of boot mode (Legacy BIOS or UEFI).
pxe_ipmitool
The boot modes can be configured in Bare Metal service in the following way:
When no boot mode setting is provided, these drivers default the boot_mode to Legacy BIOS.
Only one boot mode (either uefi
or bios
) can be configured for
the node.
If the operator wants a node to boot always in uefi
mode or bios
mode, then they may use capabilities
parameter within properties
field of an bare metal node. The operator must manually set the appropriate
boot mode on the bare metal node.
To configure a node in uefi
mode, then set capabilities
as below:
ironic node-update <node-uuid> add properties/capabilities='boot_mode:uefi'
Nodes having boot_mode
set to uefi
may be requested by adding an
extra_spec
to the Compute service flavor:
nova flavor-key ironic-test-3 set capabilities:boot_mode="uefi"
nova boot --flavor ironic-test-3 --image test-image instance-1
If capabilities
is used in extra_spec
as above, nova scheduler
(ComputeCapabilitiesFilter
) will match only bare metal nodes which have
the boot_mode
set appropriately in properties/capabilities
. It will
filter out rest of the nodes.
The above facility for matching in the Compute service can be used in
heterogeneous environments where there is a mix of uefi
and bios
machines, and operator wants to provide a choice to the user regarding
boot modes. If the flavor doesn’t contain boot_mode
and boot_mode
is configured for bare metal nodes, then nova scheduler will consider all
nodes and user may get either bios
or uefi
machine.
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