115 lines
3.2 KiB
ReStructuredText
115 lines
3.2 KiB
ReStructuredText
==================================
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VM Workload Consolidation Strategy
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==================================
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Synopsis
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--------
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**display name**: ``VM Workload Consolidation Strategy``
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**goal**: ``vm_consolidation``
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.. watcher-term:: watcher.decision_engine.strategy.strategies.vm_workload_consolidation
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Requirements
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------------
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Metrics
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*******
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The *vm_workload_consolidation* strategy requires the following metrics:
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============================ ============ ======= =======
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metric service name plugins comment
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============================ ============ ======= =======
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``memory`` ceilometer_ none
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``disk.root.size`` ceilometer_ none
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============================ ============ ======= =======
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The following metrics are not required but increase the accuracy of
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the strategy if available:
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============================ ============ ======= =======
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metric service name plugins comment
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============================ ============ ======= =======
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``memory.resident`` ceilometer_ none
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``cpu_util`` ceilometer_ none
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============================ ============ ======= =======
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.. _ceilometer: https://docs.openstack.org/ceilometer/latest/admin/telemetry-measurements.html#openstack-compute
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Cluster data model
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******************
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Default Watcher's Compute cluster data model:
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.. watcher-term:: watcher.decision_engine.model.collector.nova.NovaClusterDataModelCollector
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Actions
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*******
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Default Watcher's actions:
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.. list-table::
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:widths: 30 30
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:header-rows: 1
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* - action
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- description
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* - ``migration``
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- .. watcher-term:: watcher.applier.actions.migration.Migrate
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* - ``change_nova_service_state``
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- .. watcher-term:: watcher.applier.actions.change_nova_service_state.ChangeNovaServiceState
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Planner
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*******
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Default Watcher's planner:
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.. watcher-term:: watcher.decision_engine.planner.weight.WeightPlanner
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Configuration
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-------------
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Strategy parameter is:
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====================== ====== ============= ===================================
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parameter type default Value description
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====================== ====== ============= ===================================
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``period`` Number 3600 The time interval in seconds
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for getting statistic aggregation
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from metric data source
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====================== ====== ============= ===================================
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Efficacy Indicator
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------------------
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.. watcher-func::
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:format: literal_block
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watcher.decision_engine.goal.efficacy.specs.ServerConsolidation.get_global_efficacy_indicator
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Algorithm
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---------
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For more information on the VM Workload consolidation strategy please refer to: https://specs.openstack.org/openstack/watcher-specs/specs/mitaka/implemented/zhaw-load-consolidation.html
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How to use it ?
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---------------
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.. code-block:: shell
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$ openstack optimize audittemplate create \
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at1 server_consolidation --strategy vm_workload_consolidation
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$ openstack optimize audit create -a at1
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External Links
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--------------
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*Spec URL*
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https://specs.openstack.org/openstack/watcher-specs/specs/mitaka/implemented/zhaw-load-consolidation.html
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