96 lines
3.8 KiB
PHP
96 lines
3.8 KiB
PHP
.. _boot_mode_support:
|
|
|
|
Boot mode support
|
|
-----------------
|
|
|
|
Some of the bare metal hardware types (namely, ``redfish``, ``ilo`` and
|
|
generic ``ipmi``) support setting boot mode (Legacy BIOS or UEFI).
|
|
|
|
.. note::
|
|
|
|
Setting boot mode support in generic ``ipmi`` driver is coupled
|
|
with setting boot device. That makes boot mode support in the
|
|
``ipmi`` driver incomplete.
|
|
|
|
.. note::
|
|
|
|
In this chapter we will distinguish *ironic node* from *bare metal node*.
|
|
The difference is that *ironic node* refers to a logical node, as it is
|
|
configured in ironic, while *bare metal node* indicates the hardware
|
|
machine that ironic is managing.
|
|
|
|
The following rules apply in order when ironic manages node boot mode:
|
|
|
|
* If the hardware type (or bare metal node) does not implement reading
|
|
current boot mode of the bare metal node, then ironic assumes that
|
|
boot mode is not set on the bare metal node
|
|
|
|
* If boot mode is not set on ironic node and bare metal node boot mode
|
|
is unknown (not set, can't be read etc.), ironic node boot mode
|
|
is set to the value of the `[deploy]/default_boot_mode` option
|
|
|
|
* If boot mode is set on a bare metal node, but is not set on ironic
|
|
node, bare metal node boot mode is set on ironic node
|
|
|
|
* If boot mode is set on ironic node, but is not set on the bare metal
|
|
node, ironic node boot mode is attempted to be set on the bare metal
|
|
node (failure to set boot mode on the bare metal node will not fail
|
|
ironic node deployment)
|
|
|
|
* If different boot modes appear on to be set ironic node and on the
|
|
bare metal node, ironic node boot mode is attempted to be set on
|
|
the bare metal node (failure to set boot mode on the bare metal
|
|
node will fail ironic node deployment)
|
|
|
|
.. warning::
|
|
|
|
If a bare metal node does not support setting boot mode, then
|
|
the operator needs to make sure that boot mode configuration is
|
|
consistent between ironic node and the bare metal node.
|
|
|
|
The boot modes can be configured in the Bare Metal service in the
|
|
following way:
|
|
|
|
* 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::
|
|
|
|
openstack baremetal node set <node-uuid> --property capabilities='boot_mode:uefi'
|
|
|
|
Conversely, to configure a node in ``bios`` mode, then set the
|
|
``capabilities`` as below::
|
|
|
|
openstack baremetal node set <node-uuid> --property capabilities='boot_mode:bios'
|
|
|
|
.. note::
|
|
|
|
The Ironic project changed the default boot mode setting for nodes from
|
|
``bios`` to ``uefi`` during the Yoga development cycle.
|
|
|
|
Nodes having ``boot_mode`` set to ``uefi`` may be requested by adding an
|
|
``extra_spec`` to the Compute service flavor::
|
|
|
|
openstack flavor set ironic-test-3 --property capabilities:boot_mode="uefi"
|
|
openstack server create 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.
|
|
|
|
Some hardware support setting secure boot mode, see :ref:`secure-boot` for
|
|
details.
|