1f6bddd74d
This provides simple documentation of the path, request and response body parameters when listing and updating aggregates. Change-Id: Ife94d22e87a73fc26c4dcbda9545a9f59680f44f
109 lines
3.2 KiB
PHP
109 lines
3.2 KiB
PHP
============================
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Resource provider aggregates
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============================
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Each resource provider can be associated with one or more other
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resource providers in groups called aggregates. API calls in this
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section are used to list and update the aggregates that are associated
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with one resource provider.
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.. note:: Placement aggregates are *not* the same as Nova host
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aggregates and should not be considered equivalent.
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The primary differences between Nova's host aggregates and placement
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aggregates are the following:
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* In Nova, a host aggregate associates a *nova-compute service* with
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other nova-compute services. Placement aggregates are not specific
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to a nova-compute service and are, in fact, not
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compute-specific at all. A resource provider in the Placement API is
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generic, and placement aggregates are simply groups of generic
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resource providers. This is an important difference especially for
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Ironic, which when used with Nova, has many Ironic baremetal nodes
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attached to a single nova-compute service. In the Placement API,
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each Ironic baremetal node is its own resource provider and can
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therefore be associated to other Ironic baremetal nodes via a
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placement aggregate association.
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* In Nova, a host aggregate may have *metadata* key/value pairs
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attached to it. All nova-compute services associated with a Nova
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host aggregate share the same metadata. Placement aggregates have no
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such metadata because placement aggregates *only* represent the
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grouping of resource providers. In the Placement API, resource
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providers are individually decorated with *traits* that provide
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qualitative information about the resource provider.
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* In Nova, a host aggregate dictates the *availability zone* within
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which one or more nova-compute services reside. Placement aggregates
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have no concept of an availability zone.
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.. note:: Aggregates API requests are availiable starting from version 1.1.
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List resource provider aggregates
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=================================
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.. rest_method:: GET /resource_providers/{uuid}/aggregates
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Return a list of aggregates associated with the resource provider
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identified by `{uuid}`.
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Normal Response Codes: 200
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Error response codes: itemNotFound(404)
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Request
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-------
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.. rest_parameters:: parameters.yaml
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- uuid: resource_provider_uuid_path
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Response
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--------
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.. rest_parameters:: parameters.yaml
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- aggregates: aggregates
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Response Example
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----------------
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.. literalinclude:: get-aggregates.json
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:language: javascript
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Update resource provider aggregates
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===================================
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Associate a list of aggregates with the resource provider identified by `{uuid}`.
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.. rest_method:: PUT /resource_providers/{uuid}/aggregates
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Normal Response Codes: 200
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Error response codes: badRequest(400), itemNotFound(404)
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Request
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-------
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.. rest_parameters:: parameters.yaml
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- uuid: resource_provider_uuid_path
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- aggregates: aggregates
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Request example
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---------------
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.. literalinclude:: update-aggregates-request.json
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:language: javascript
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Response
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--------
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.. rest_parameters:: parameters.yaml
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- aggregates: aggregates
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Response Example
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----------------
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.. literalinclude:: update-aggregates.json
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:language: javascript
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