.. -*- rst -*- ======================= Node Management (nodes) ======================= Nodes can be managed through several sub-resources. Maintenance mode can be set by the operator, with an optional "reason" stored by Ironic. The supplied ``driver_info`` can be validated to ensure that the selected ``driver`` has all the information it requires to manage the Node. A Node can be rebooted, turned on, or turned off by requesting a change to its power state. This is handled asynchronously and tracked in the ``target_power_state`` field after the request is received. A Node's boot device can be changed, and the set of supported boot devices can be queried. A request to change a Node's provision state is also tracked asynchronously; the ``target_provision_state`` represents the requested state. A Node may transition through several discrete ``provision_state`` steps before arriving at the requested state. This can vary between drivers and based on configuration. For example, a Node in the ``available`` state can have an instance deployed to it by requesting the provision state of ``active``. During this transition, the Node's ``provision_state`` will temporarily be set to ``deploying``, and depending on the driver, it may also be ``wait call-back``. When the transitions are complete, ``target_provision_state`` will be set to ``None`` and ``provision_state`` will be set to ``active``. To destroy the instance, request the provision state of ``delete``. During this transition, the Node may or may not go through a ``cleaning`` state, depending on the service configuration. Validate Node =============== .. rest_method:: GET /v1/nodes/{node_ident}/validate Request that Ironic validate whether the Node's ``driver`` has enough information to manage the Node. This polls each ``interface`` on the driver, and returns the status of that ``interface`` as an element in the response. Note that each ``driver`` may require different information to be supplied, and not all drivers support all interfaces. Normal response codes: 200 .. TODO: add error codes Request ------- .. rest_parameters:: parameters.yaml - node_ident: node_ident Response -------- Each element in the response will contain a "result" variable, which will have a value of "true" or "false", indicating that the interface either has or does not have sufficient information to function. A value of ``null`` indicates that the Node's driver does not support that interface. .. rest_parameters:: parameters.yaml - boot: v_boot - console: v_console - deploy: v_deploy - inspect: v_inspect - management: v_management - network: v_network - power: v_power - raid: v_raid - rescue: v_rescue - storage: v_storage **Example node validation response:** .. literalinclude:: samples/node-validate-response.json :language: javascript Set Maintenance Flag ============================= .. rest_method:: PUT /v1/nodes/{node_ident}/maintenance Request that Ironic set the maintenance flag on the Node. This will disable certain automatic actions that the Node's driver may take, and remove the Node from Nova's available resource pool. Normal response code: 202 .. TODO: Add link to user / operator documentation on the Maintenance flag Request ------- .. rest_parameters:: parameters.yaml - node_ident: node_ident - reason: reason **Example request: mark a node for maintenance:** .. literalinclude:: samples/node-maintenance-request.json Clear Maintenance Flag ============================== .. rest_method:: DELETE /v1/nodes/{node_ident}/maintenance The maintenance flag is unset by sending a DELETE request to this endpoint. If the request is accepted, Ironic will also clear the ``maintenance_reason`` field. Normal response code: 202 .. TODO: Add link to user / operator documentation on the Maintenance flag Request ------- .. rest_parameters:: parameters.yaml - node_ident: node_ident Set Boot Device =============== .. rest_method:: PUT /v1/nodes/{node_ident}/management/boot_device Set the boot device for the given Node, and set it persistently or for one-time boot. The exact behaviour of this depends on the hardware driver. .. note:: In some drivers, eg. the ``*_ipmitool`` family, this method initiates a synchronous call to the hardware management device (BMC). It should be used with caution! This is `a known bug `_. .. note:: Some drivers do not support one-time boot, and always set the boot device persistently. Normal response code: 204 .. TODO: add error codes Request ------- .. rest_parameters:: parameters.yaml - node_ident: node_ident - boot_device: req_boot_device - persistent: req_persistent **Example JSON request body to set boot device:** .. literalinclude:: samples/node-set-boot-device.json Get Boot Device =============== .. rest_method:: GET /v1/nodes/{node_ident}/management/boot_device Get the current boot device for the given Node. .. note:: In some drivers, eg. the ``*_ipmitool`` family, this method initiates a synchronous call to the hardware management device (BMC). It should be used with caution! This is `a known bug `_. Normal response code: 200 .. TODO: add error codes Request ------- .. rest_parameters:: parameters.yaml - node_ident: node_ident Response -------- .. rest_parameters:: parameters.yaml - boot_device: boot_device - persistent: persistent **Example JSON response to get boot device:** .. literalinclude:: samples/node-get-boot-device-response.json Get Supported Boot Devices =========================== .. rest_method:: GET /v1/nodes/{node_ident}/management/boot_device/supported Retrieve the acceptable set of supported boot devices for a specific Node. Normal response code: 200 .. TODO: add error codes Request ------- .. rest_parameters:: parameters.yaml - node_ident: node_ident Response -------- .. rest_parameters:: parameters.yaml - supported_boot_devices: supported_boot_devices **Example response listing supported boot devices:** .. literalinclude:: samples/node-get-supported-boot-devices-response.json Inject NMI (Non-Masking Interrupts) =================================== .. rest_method:: PUT /v1/nodes/{node_ident}/management/inject_nmi .. versionadded:: 1.29 Inject NMI (Non-Masking Interrupts) for the given Node. This feature can be used for hardware diagnostics, and actual support depends on a driver. Normal response code: 204 (No content) Error codes: - 400 (Invalid) - 403 (Forbidden) - 404 (NotFound) - 406 (NotAcceptable) - 409 (NodeLocked, ClientError) Request ------- .. rest_parameters:: parameters.yaml - node_ident: node_ident **Request to inject NMI to a node has to be empty dictionary:** .. literalinclude:: samples/node-inject-nmi.json Node State Summary ================== .. rest_method:: GET /v1/nodes/{node_ident}/states Get a summary of the Node's current power, provision, raid, and console status. Normal response code: 200 Request ------- .. rest_parameters:: parameters.yaml - node_ident: node_ident Response -------- .. rest_parameters:: parameters.yaml - power_state: power_state - target_power_state: target_power_state - provision_state: provision_state - target_provision_state: target_provision_state - provision_updated_at: provision_updated_at - last_error: last_error - console_enabled: console_enabled - raid_config: raid_config - target_raid_config: target_raid_config **Example node state:** .. literalinclude:: samples/node-get-state-response.json Change Node Power State ======================= .. rest_method:: PUT /v1/nodes/{node_ident}/states/power Request a change to the Node's power state. Normal response code: 202 (Accepted) .. versionadded:: 1.27 In the request, the ``target`` value can also be one of ``soft power off`` or ``soft rebooting``. .. versionadded:: 1.27 In the request, a ``timeout`` can be specified. Error codes: - 409 (NodeLocked, ClientError) - 400 (Invalid, InvalidStateRequested, InvalidParameterValue) - 406 (NotAcceptable) - 503 (NoFreeConductorWorkers) Request ------- .. rest_parameters:: parameters.yaml - node_ident: node_ident - target: req_target_power_state - timeout: power_timeout **Example request to power off a Node:** .. literalinclude:: samples/node-set-power-off.json **Example request to soft power off a Node with timeout:** .. literalinclude:: samples/node-set-soft-power-off.json Change Node Provision State =========================== .. rest_method:: PUT /v1/nodes/{node_ident}/states/provision Request a change to the Node's provision state. Acceptable target states depend on the Node's current provision state. More detailed documentation of the Ironic State Machine is available `in the developer docs `_. .. versionadded:: 1.35 A ``configdrive`` can be provided when setting the node's provision target state to ``rebuild``. .. versionadded:: 1.38 A node can be rescued or unrescued by setting the node's provision target state to ``rescue`` or ``unrescue`` respectively. .. versionadded:: 1.56 A ``configdrive`` can be a JSON object with ``meta_data``, ``network_data`` and ``user_data``. Normal response code: 202 Error codes: - 409 (NodeLocked, ClientError) - 400 (InvalidState, NodeInMaintenance) - 406 (NotAcceptable) - 503 (NoFreeConductorWorkers) Request ------- .. rest_parameters:: parameters.yaml - node_ident: node_ident - target: req_provision_state - configdrive: configdrive - clean_steps: clean_steps - rescue_password: rescue_password **Example request to deploy a Node, using a configdrive served via local webserver:** .. literalinclude:: samples/node-set-active-state.json **Example request to clean a Node, with custom clean step:** .. literalinclude:: samples/node-set-clean-state.json Set RAID Config =============== .. rest_method:: PUT /v1/nodes/{node_ident}/states/raid .. versionadded:: 1.12 Store the supplied configuration on the Node's ``target_raid_config`` property. This property must be structured JSON, and will be validated by the driver upon receipt. The request schema is defined in the `documentation for the RAID feature `_ .. note:: Calling this API only stores the requested configuration; it will be applied the next time that the Node transitions through the ``cleaning`` phase. Normal response code: 204 .. TODO: add more description, response code, sample response Request ------- .. rest_parameters:: parameters.yaml - node_ident: node_ident - target_raid_config: req_target_raid_config **Example requested RAID config:** .. literalinclude:: samples/node-set-raid-request.json .. TODO: add more description, response code, sample response Get Console =========== .. rest_method:: GET /v1/nodes/{node_ident}/states/console Get connection information about the console. .. TODO: add more description, response code, sample response Request ------- .. rest_parameters:: parameters.yaml - node_ident: node_ident .. TODO: add more description, response code, sample response Start/Stop Console =================== .. rest_method:: PUT /v1/nodes/{node_ident}/states/console Start or stop the serial console. .. TODO: add more description, response code, sample response Request ------- .. rest_parameters:: parameters.yaml - node_ident: node_ident - enabled: req_console_enabled