249 lines
8.2 KiB
ReStructuredText
249 lines
8.2 KiB
ReStructuredText
.. -*- rst -*-
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=================
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Drivers (drivers)
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=================
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.. versionchanged:: 1.30
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The REST API now also exposes information about *dynamic* drivers.
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Ironic has two types of drivers: *classic* drivers and *dynamic* drivers.
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A *classic* driver is a Python object containing all the logic to manage the
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bare metal nodes enrolled within Ironic. A driver may be loaded within one or
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more ``ironic-conductor`` services. Each driver contains a pre-determined set
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of instantiated interfaces. Each type of interface (eg, ``power`` or ``boot``)
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performs a specific hardware function.
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*Dynamic* drivers are supported via hardware types, which are Python classes
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enabled via entry points. Unlike *classic* drivers, which have pre-determined
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interfaces, a hardware type may support multiple types of interfaces. For
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example, the ``ipmi`` hardware type may support multiple methods for enabling
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node console. Which interface a node of a particular hardware type uses is
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determined at runtime. This collection of interfaces is called a *dynamic*
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driver. For more information about this, see the node API documentation.
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The REST API exposes the list of drivers and which ``ironic-conductor``
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processes have loaded that driver via the Driver resource (``/v1/drivers``
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endpoint). This can be useful for operators to validate their configuration in
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a heterogeneous hardware environment. Each ``ironic-conductor`` process may
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load one or more drivers, and does not necessarily need to load the same
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*classic* drivers as another ``ironic-conductor``. Each ``ironic-conductor``
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with the same hardware types must have the same hardware interfaces enabled.
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The REST API also exposes details about each driver, such as what properties
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must be supplied to a node's ``driver_info`` for that driver to manage
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hardware.
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Lastly, some drivers may expose methods through a ``driver_vendor_passthru``
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endpoint, allowing one to interact with the driver directly (i.e., without
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knowing a specific node identifier). For example, this is used by the ironic
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python agent ramdisk to get the UUID of the node being deployed/cleaned by
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using MAC addresses of the node's network interfaces the agent has discovered.
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List drivers
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============
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.. rest_method:: GET /v1/drivers
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Lists all drivers.
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.. versionadded:: 1.77
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Added ``fields`` selector to query for particular fields.
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Normal response codes: 200
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Request
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-------
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.. rest_parameters:: parameters.yaml
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- type: driver_type
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- detail: driver_detail
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- fields: fields
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Response Parameters
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-------------------
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The response BODY contains a single key, "drivers", whose value is a list of
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drivers supported by this Ironic service.
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.. rest_parameters:: parameters.yaml
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- drivers: drivers
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- name: driver_name
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- hosts: hosts
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- type: response_driver_type
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- links: links
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- properties: driver_property_links
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.. versionchanged:: 1.30
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If the request has the "detail" URL parameter set to true, each
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driver will also include the following fields.
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.. rest_parameters:: parameters.yaml
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- default_bios_interface: default_bios_interface
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- default_boot_interface: default_boot_interface
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- default_console_interface: default_console_interface
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- default_deploy_interface: default_deploy_interface
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- default_inspect_interface: default_inspect_interface
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- default_management_interface: default_management_interface
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- default_network_interface: default_network_interface
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- default_power_interface: default_power_interface
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- default_raid_interface: default_raid_interface
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- default_rescue_interface: default_rescue_interface
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- default_storage_interface: default_storage_interface
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- default_vendor_interface: default_vendor_interface
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- enabled_bios_interfaces: enabled_bios_interfaces
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- enabled_boot_interfaces: enabled_boot_interfaces
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- enabled_console_interfaces: enabled_console_interfaces
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- enabled_deploy_interfaces: enabled_deploy_interfaces
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- enabled_inspect_interfaces: enabled_inspect_interfaces
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- enabled_management_interfaces: enabled_management_interfaces
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- enabled_network_interfaces: enabled_network_interfaces
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- enabled_power_interfaces: enabled_power_interfaces
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- enabled_rescue_interfaces: enabled_rescue_interfaces
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- enabled_raid_interfaces: enabled_raid_interfaces
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- enabled_storage_interfaces: enabled_storage_interfaces
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- enabled_vendor_interfaces: enabled_vendor_interfaces
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Response Example
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----------------
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Example for a request with detail=false (the default):
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.. literalinclude:: samples/drivers-list-response.json
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:language: javascript
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Example for a request with detail=true:
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.. literalinclude:: samples/drivers-list-detail-response.json
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:language: javascript
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Show driver details
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===================
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.. rest_method:: GET /v1/drivers/{driver_name}
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Shows details for a driver.
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.. versionadded:: 1.77
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Added ``fields`` selector to query for particular fields.
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Normal response codes: 200
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Request
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-------
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.. rest_parameters:: parameters.yaml
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- driver_name: driver_ident
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- fields: fields
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Response Parameters
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-------------------
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.. rest_parameters:: parameters.yaml
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- name: driver_name
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- hosts: hosts
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- type: response_driver_type
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- default_bios_interface: default_bios_interface
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- default_boot_interface: default_boot_interface
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- default_console_interface: default_console_interface
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- default_deploy_interface: default_deploy_interface
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- default_inspect_interface: default_inspect_interface
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- default_management_interface: default_management_interface
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- default_network_interface: default_network_interface
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- default_power_interface: default_power_interface
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- default_raid_interface: default_raid_interface
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- default_rescue_interface: default_rescue_interface
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- default_storage_interface: default_storage_interface
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- default_vendor_interface: default_vendor_interface
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- enabled_bios_interfaces: enabled_bios_interfaces
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- enabled_boot_interfaces: enabled_boot_interfaces
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- enabled_console_interfaces: enabled_console_interfaces
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- enabled_deploy_interfaces: enabled_deploy_interfaces
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- enabled_inspect_interfaces: enabled_inspect_interfaces
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- enabled_management_interfaces: enabled_management_interfaces
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- enabled_network_interfaces: enabled_network_interfaces
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- enabled_power_interfaces: enabled_power_interfaces
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- enabled_raid_interfaces: enabled_raid_interfaces
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- enabled_rescue_interfaces: enabled_rescue_interfaces
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- enabled_storage_interfaces: enabled_storage_interfaces
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- enabled_vendor_interfaces: enabled_vendor_interfaces
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- links: links
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- properties: driver_property_links
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Response Example
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----------------
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.. literalinclude:: samples/driver-get-response.json
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:language: javascript
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Show driver properties
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======================
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.. rest_method:: GET /v1/drivers/{driver_name}/properties
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Shows the required and optional parameters that ``driver_name`` expects to be
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supplied in the ``driver_info`` field for every Node it manages.
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To check if all required parameters have been supplied to a Node, you should
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query the ``/v1/nodes/{node_ident}/validate`` endpoint.
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Normal response codes: 200
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Request
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-------
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.. rest_parameters:: parameters.yaml
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- driver_name: driver_ident
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Response Example
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----------------
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The response BODY is a dictionary, but the keys are unique to each driver.
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The structure of the response is ``property`` : ``description``.
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The following example is returned from the ``agent_ipmitool`` driver.
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.. literalinclude:: samples/driver-property-response.json
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:language: javascript
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Show driver logical disk properties
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===================================
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.. versionadded:: 1.12
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.. rest_method:: GET /v1/drivers/{driver_name}/raid/logical_disk_properties
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Show the required and optional parameters that ``driver_name`` expects to be
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supplied in the node's ``raid_config`` field, if a RAID configuration change is
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requested.
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Normal response codes: 200
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Request
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-------
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.. rest_parameters:: parameters.yaml
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- driver_name: driver_ident
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Response Example
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----------------
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The response BODY is a dictionary, but the keys are unique to each driver.
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The structure of the response is ``property`` : ``description``.
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The following example is returned from the ``agent_ipmitool`` driver.
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.. literalinclude:: samples/driver-logical-disk-properties-response.json
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:language: javascript
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