Merge "Propose Redfish support into Ironic"
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This work is licensed under a Creative Commons Attribution 3.0 Unported
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License.
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http://creativecommons.org/licenses/by/3.0/legalcode
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=========================
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Redfish driver interfaces
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=========================
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https://bugs.launchpad.net/ironic/+bug/1526477
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This specification proposes the addition of a new driver in order to support
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Ironic deployment on Redfish compliant servers.
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Problem description
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===================
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The Distributed Management Task Force (DMTF) has published a new specification
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called Redfish (refer to http://www.dmtf.org/standards/redfish) to provide a
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RESTful based API to manage servers in a standard way. This specification aims
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at adding support to Ironic for controlling Redfish compliant servers.
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Proposed change
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===============
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Power and management interfaces will be extended with Redfish support.
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The new Redfish module can use either the python-redfish (when it is mature
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enough) or the sushy library for communicating with a Redfish system.
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(refer to https://github.com/openstack/python-redfish and
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https://github.com/openstack/sushy)
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The goal is to provide power management similarly to what is done
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in the pre-existing in-tree drivers.
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Note that no OEM specific extension will be supported.
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Alternatives
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------------
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No real alternative exists currently
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Data model impact
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-----------------
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None
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RPC API impact
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--------------
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None
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State Machine Impact
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--------------------
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None
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REST API impact
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---------------
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None
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Driver API impact
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-----------------
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None
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Nova driver impact
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------------------
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None
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Ramdisk impact
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--------------
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None
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Security impact
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---------------
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None
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Client (CLI) impact
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-------------------
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None
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Other end user impact
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---------------------
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None
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Scalability impact
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------------------
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None
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Performance Impact
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------------------
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None
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Other deployer impact
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---------------------
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The following driver_info fields are required while enrolling nodes into Ironic:
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* redfish_uri URI of the System to interact with
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(e.g.: http://x.y.z.t/redfish/v1/Systems/1 or
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https://redfishmgr/redfish/v1/Systems/CX34R87)
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* redfish_username: User account with admin/server-profile access privilege
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* redfish_password: User account password
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* redfish_verify_ca: this property contains either a boolean value,
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a path to a CA_BUNDLE file or directory with
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certificates of trusted CAs. If set to True
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the driver will verify the host certificates;
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if False the driver will ignore verifying the
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SSL certificate; If it's a path the driver will
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use the specified certificate or one of the
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certificates in the directory. Defaults to True.
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The following new configuration variables are proposed (and their default
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values) to be added to the conductor variable group:
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* [redfish]/connection_attempts = 5
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Maximum number of attempts to try to connect to Redfish
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* [redfish]/connection_retry_interval = 2
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Number of seconds to wait between attempts to connect to Redfish
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Developer impact
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----------------
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None
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Implementation
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==============
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Assignee(s)
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-----------
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Primary assignee:
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bcornec
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lucasagomes
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Other contributors:
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ribaudr
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Work Items
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----------
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* Add new Redfish hardware type, supporting power and management interface
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APIs and providing PXE, virtual media boot and standard deployment
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methods.
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* Writing unit-test cases for the Redfish type.
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* Adaptation of the devstack Ironic module to add this capability, based
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on the virtualbmc work, adding to it the minimal required Redfish REST
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API support.
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* Writing configuration documents.
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Dependencies
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============
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This driver requires either that python-redfish or sushy installed on the
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conductor node.
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Testing
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=======
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Unit-tests will be implemented for Redfish support.
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DevStack will be update to setup the nodes with the redfish driver and
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the libvirt mockup that is shipped with Sushy allowing it to be tests
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in gate against virtual machines.
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Upgrades and Backwards Compatibility
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====================================
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This driver will not break any compatibility with either the REST API or
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the RPC API.
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Documentation Impact
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====================
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* Writing configuration documents.
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* Updating Ironic documentation section _`Enabling Drivers`:
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http://docs.openstack.org/developer/ironic/deploy/drivers.html with Redfish
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related instructions.
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* Updating Ironic install-guide documentation section
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_`Setup the drivers for the Bare Metal service`:
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http://docs.openstack.org/project-install-guide/baremetal/draft/setup-drivers.html
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References
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==========
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_`Redfish DMTF`: http://www.dmtf.org/standards/redfish
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_`python-redfish`: https://github.com/openstack/python-redfish
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_`sushy`: https://github.com/openstack/sushy
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@ -0,0 +1 @@
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../approved/ironic-redfish.rst
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