openstack/ironic-inspector
Code Issues Proposed changes
57ee71b2e0
ironic-inspector/doc/source/workflow.rst
Dmitry Tantsur 99732e5297 Numerous improvements in the documentation 
* Flatten the directory structure (we don't have that many doc files)
* Dropped HTTP-API from the root so that we don't maintain 2 copies
* Fixed links all over the place
* Leave one copy of README text in the root and include it in docs
* Update 'tox -epep8' to also check docs

Change-Id: Ic14cb73668544be27c6b96b384f93b239e49acfd
2015-12-02 18:07:22 +01:00

2.5 KiB
Raw Blame History

Workflow

Usual hardware introspection flow is as follows:

  • Operator enrolls nodes into Ironic e.g. via ironic CLI command. Power management credentials should be provided to Ironic at this step.

  • Nodes are put in the correct state for introspection as described in node_states.

  • Operator sends nodes on introspection using ironic-inspector API or CLI (see usage).

  • On receiving node UUID ironic-inspector:

    • validates node power credentials, current power and provisioning states,
    • allows firewall access to PXE boot service for the nodes,
    • issues reboot command for the nodes, so that they boot the ramdisk.

  • The ramdisk collects the required information and posts it back to ironic-inspector.

  • On receiving data from the ramdisk, ironic-inspector:

    • validates received data,
    • finds the node in Ironic database using it's BMC address (MAC address in case of SSH driver),
    • fills missing node properties with received data and creates missing ports.

    Note

    ironic-inspector is responsible to create Ironic ports for some or all NIC's found on the node. ironic-inspector is also capable of deleting ports that should not be present. There are two important configuration options that affect this behavior: add_ports and keep_ports (please refer to example.conf for detailed explanation).

    Default values as of ironic-inspector 1.1.0 are add_ports=pxe, keep_ports=all, which means that only one port will be added, which is associated with NIC the ramdisk PXE booted from. No ports will be deleted. This setting ensures that deploying on introspected nodes will succeed despite Ironic bug 1405131.

    Ironic inspection feature by default requires different settings: add_ports=all, keep_ports=present, which means that ports will be created for all detected NIC's, and all other ports will be deleted. Refer to the Ironic inspection documentation for details.

  • Separate API (see usage and api) can be used to query introspection results for a given node.

  • Nodes are put in the correct state for deploying as described in node_states.

Starting DHCP server and configuring PXE boot environment is not part of this package and should be done separately.