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==================================
VM Workload Consolidation Strategy
==================================
Synopsis
--------
**display name**: ``VM Workload Consolidation Strategy``
**goal**: ``vm_consolidation``
.. watcher-term:: watcher.decision_engine.strategy.strategies.vm_workload_consolidation.VMWorkloadConsolidation
Requirements
------------
Metrics
*******
The *vm_workload_consolidation* strategy requires the following metrics:
============================ ============ ======= =========================
metric service name plugins comment
============================ ============ ======= =========================
``cpu`` ceilometer_ none
``memory.resident`` ceilometer_ none
``memory`` ceilometer_ none
``disk.root.size`` ceilometer_ none
``compute.node.cpu.percent`` ceilometer_ none (optional) need to set the
``compute_monitors`` option
to ``cpu.virt_driver`` in the
nova.conf.
``hardware.memory.used`` ceilometer_ SNMP_ (optional)
============================ ============ ======= =========================
.. _ceilometer: https://docs.openstack.org/ceilometer/latest/admin/telemetry-measurements.html#openstack-compute
.. _SNMP: https://docs.openstack.org/ceilometer/latest/admin/telemetry-measurements.html#snmp-based-meters
Cluster data model
******************
Default Watcher's Compute cluster data model:
.. watcher-term:: watcher.decision_engine.model.collector.nova.NovaClusterDataModelCollector
Actions
*******
Default Watcher's actions:
.. list-table::
:widths: 30 30
:header-rows: 1
* - action
- description
* - ``migration``
- .. watcher-term:: watcher.applier.actions.migration.Migrate
* - ``change_nova_service_state``
- .. watcher-term:: watcher.applier.actions.change_nova_service_state.ChangeNovaServiceState
Planner
*******
Default Watcher's planner:
.. watcher-term:: watcher.decision_engine.planner.weight.WeightPlanner
Configuration
-------------
Strategy parameter is:
====================== ====== ============= ===================================
parameter type default Value description
====================== ====== ============= ===================================
``period`` Number 3600 The time interval in seconds
for getting statistic aggregation
from metric data source
====================== ====== ============= ===================================
Efficacy Indicator
------------------
.. watcher-func::
:format: literal_block
watcher.decision_engine.goal.efficacy.specs.ServerConsolidation.get_global_efficacy_indicator
Algorithm
---------
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
How to use it ?
---------------
.. code-block:: shell
$ openstack optimize audittemplate create \
at1 server_consolidation --strategy vm_workload_consolidation
$ openstack optimize audit create -a at1
External Links
--------------
*Spec URL*
https://specs.openstack.org/openstack/watcher-specs/specs/mitaka/implemented/zhaw-load-consolidation.html
|
