ironic/doc/source/admin/upgrade-to-hardware-types.rst

Upgrading to Hardware Types

In the future, the Bare Metal service will stop supporting classic drivers and will only support hardware types. Please see /install/enabling-drivers for the detailed explanation of the difference between these two types of drivers.

Planning the upgrade

It is necessary to figure out which hardware types and hardware interfaces correspond to which classic drivers used in your deployment. Use the following table:

Classic Driver	Hardware Type	Boot	Deploy	Management	Power
pxe_ipmitool	ipmi	pxe	iscsi	ipmitool	ipmitool
agent_ipmitool	ipmi	pxe	direct	ipmitool	ipmitool
pxe_irmc	irmc	irmc-pxe	iscsi	irmc	irmc
iscsi_irmc	irmc	irmc-virtual-media	iscsi	irmc	irmc
agent_irmc	irmc	irmc-virtual-media	direct	irmc	irmc

Warning

This table does not currently cover hardware interfaces other than boot, deploy, management and power.

Note

For out-of-tree drivers you may need to reach out to their maintainers or figure out the appropriate interfaces by researching the source code.

Configuration

You will need to enable hardware types and interfaces that correspond to your currently enabled classic drivers. For example, if you have the following configuration in your ironic.conf:

[DEFAULT]
enabled_drivers = pxe_ipmitool,agent_ipmitool

You will have to add this configuration as well:

[DEFAULT]
enabled_hardware_types = ipmi
enabled_boot_interfaces = pxe
enabled_deploy_interfaces = iscsi,direct
enabled_management_interfaces = ipmitool
enabled_power_interfaces = ipmitool

Note

For every interface type there is an option default_<INTERFACE>_interface, where <INTERFACE> is the interface type name. For example, one can make all nodes use the direct deploy method by default by setting:

[DEFAULT]
default_deploy_interface = direct

Migrating nodes

After the required items are enabled in the configuration, each node's driver field has to be updated to a new value. You may need to also set new values for some or all interfaces:

export OS_BAREMETAL_API_VERSION=1.31

for uuid in $(openstack baremetal node list --driver pxe_ipmitool -f value -c UUID); do
    openstack baremetal node set $uuid --driver ipmi --deploy-interface iscsi
done

for uuid in $(openstack baremetal node list --driver agent_ipmitool -f value -c UUID); do
    openstack baremetal node set $uuid --driver ipmi --deploy-interface direct
done

See /install/enrollment for more details on setting hardware types and interfaces.

Warning

It is not recommended to change the interfaces for active nodes. If absolutely needed, the nodes have to be put in the maintenance mode first:

openstack baremetal node maintenance set $UUID \
    --reason "Changing driver and/or hardware interfaces"
# do the update, validate its correctness
openstack baremetal node maintenance unset $UUID

Other interfaces

Care has to be taken to migrate from classic drivers using non-default interfaces. This chapter covers a few of the most commonly used.

Ironic Inspector

Some classic drivers, notably pxe_ipmitool, agent_ipmitool and pxe_drac_inspector, use ironic-inspector for their inspect interface.

The same functionality is available for all hardware types, but the appropriate inspect interface has to be enabled in the Bare Metal service configuration file, for example:

[DEFAULT]
enabled_inspect_interfaces = inspector,no-inspect

See /install/enabling-drivers for more details.

Note

The configuration option [inspector]enabled does not affect hardware types.

Then you can tell your nodes to use this interface, for example:

export OS_BAREMETAL_API_VERSION=1.31
for uuid in $(openstack baremetal node list --driver ipmi -f value -c UUID); do
    openstack baremetal node set $uuid --inspect-interface inspector
done

Note

A node configured with the IPMI hardware type, will use the inspector inspection implementation automatically if it is enabled. This is not the case for the most of the vendor drivers.

Console

Several classic drivers, notably pxe_ipmitool_socat and agent_ipmitool_socat, use socat-based serial console implementation.

For the ipmi hardware type it is used by default, if enabled in the configuration file:

[DEFAULT]
enabled_console_interfaces = ipmitool-socat,no-console

If you want to use the shellinabox implementation instead, it has to be enabled as well:

[DEFAULT]
enabled_console_interfaces = ipmitool-shellinabox,no-console

Then you need to update some or all nodes to use it explicitly. For example, to update all nodes use:

export OS_BAREMETAL_API_VERSION=1.31
for uuid in $(openstack baremetal node list --driver ipmi -f value -c UUID); do
    openstack baremetal node set $uuid --console-interface ipmitool-shellinabox
done

RAID

Many classic drivers, including pxe_ipmitool and agent_ipmitool use the IPA-based in-band RAID implementation by default.

For the hardware types it is not used by default. To use it, you need to enable it in the configuration first:

[DEFAULT]
enabled_raid_interfaces = agent,no-raid

Then you can update those nodes that support in-band RAID to use the agent RAID interface. For example, to update all nodes use:

export OS_BAREMETAL_API_VERSION=1.31
for uuid in $(openstack baremetal node list --driver ipmi -f value -c UUID); do
    openstack baremetal node set $uuid --raid-interface agent
done

Note

The ability of a node to use the agent RAID interface depends on the ramdisk (more specifically, a hardware manager used in it), not on the driver.

Network and storage

The network and storage interfaces have always been dynamic, and thus do not require any special treatment during upgrade.