fd5b692905
This adds config options for unified limits quotas that allow admin/operators to specify which resources they will require or ignore to have unified limits set in Keystone. The options are only used when ``[quota]driver`` is set to ``UnifiedLimitsDriver``. When the resource strategy is set to 'require' (the default), the resource list will represent the resources that are required to have a registered limit set in Keystone. When the resource strategy is set to 'ignore', the resource list will represent the resources that will be ignored for quota enforcement if they do not have a registered limit set in Keystone. Related to blueprint unified-limits-nova-unset-limits Change-Id: Icb08fadbdbf9c1bf354c3091f05edce80ebf68c3
37 lines
1.9 KiB
YAML
37 lines
1.9 KiB
YAML
features:
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New configuration options ``[quota]unified_limits_resource_strategy`` and
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``[quota]unified_limits_resource_list`` have
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been added to enable operators to specify a list of resources that are
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either required or ignored to have registered limits set. The default
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strategy is ``require`` and the default resource list contains ``servers``.
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The configured list is only used when ``[quota]driver`` is set to the
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``UnifiedLimitsDriver``.
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When ``unified_limits_resource_strategy = require``, if a resource in
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``unified_limits_resource_list`` is requested and has no registered limit
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set, the quota limit for that resource will be considered to be 0 and all
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requests to allocate that resource will be rejected for being over quota.
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Any resource not in the list will be considered to have unlimited quota.
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When ``unified_limits_resource_strategy = ignore``, if a resource in
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``unified_limits_resource_list`` is requested and has no registered limit
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set, the quota limit for that resource will be considered to be unlimited
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and all requests to allocate that resource will be accepted. Any resource
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not in the list will be considered to have 0 quota.
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The options should be configured for the :program:`nova-api` and
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:program:`nova-conductor` services. The :program:`nova-conductor` service
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performs quota enforcement when ``[quota]recheck_quota`` is ``True`` (the
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default).
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The ``unified_limits_resource_list`` list can also be set to an empty list.
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upgrade:
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When the ``[quota]driver`` configuration option is set to the
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``UnifiedLimitsDriver``, a limit of ``-1`` in Keystone will now be
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considered as unlimited and the ``servers`` resource will be considered to
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be required to have a registered limit set in Keystone because of the
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values for ``[quota]unified_limits_resource_strategy`` and
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``unified_limits_resource_strategy``.
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