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watcher/doc/source/strategies/workload_balance.rst
Alexander Chadin c7ec186576 Adapt watcher documentation for new standards
This patch set makes the following changes:

 * Add index file to each subdirectory of doc/source
 * Update doc/source/index.rst with new links
 * Move content of install-guide to the doc/source/install
 * Minor changes

Depends-On: Ifc5512c0e2373cf3387e0e0498268eab092e52bb
Change-Id: Iecb4f60efb015a56b9b37331859848b287112842
2017-07-04 15:49:24 +03:00

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ReStructuredText

===================================
Workload Balance Migration Strategy
===================================
Synopsis
--------
**display name**: ``workload_balance``
**goal**: ``workload_balancing``
.. watcher-term:: watcher.decision_engine.strategy.strategies.workload_balance
Requirements
------------
None.
Metrics
*******
The *workload_balance* strategy requires the following metrics:
======================= ============ ======= =======
metric service name plugins comment
======================= ============ ======= =======
``cpu_util`` ceilometer_ none
======================= ============ ======= =======
.. _ceilometer: http://docs.openstack.org/admin-guide/telemetry-measurements.html#openstack-compute
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
Planner
*******
Default Watcher's planner:
.. watcher-term:: watcher.decision_engine.planner.weight.WeightPlanner
Configuration
-------------
Strategy parameters are:
============== ====== ============= ====================================
parameter type default Value description
============== ====== ============= ====================================
``threshold`` Number 25.0 Workload threshold for migration
``period`` Number 300 Aggregate time period of ceilometer
============== ====== ============= ====================================
Efficacy Indicator
------------------
None
Algorithm
---------
For more information on the Workload Balance Migration Strategy please refer
to: https://specs.openstack.org/openstack/watcher-specs/specs/mitaka/implemented/workload-balance-migration-strategy.html
How to use it ?
---------------
.. code-block:: shell
$ openstack optimize audittemplate create \
at1 workload_balancing --strategy workload_balance
$ openstack optimize audit create -a at1 -p threshold=26.0 \
-p period=310
External Links
--------------
None.