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==================================
Basic Offline Server Consolidation
==================================
Synopsis
--------
**display name**: ``Basic offline consolidation``
**goal**: ``server_consolidation``
.. watcher-term:: watcher.decision_engine.strategy.strategies.basic_consolidation.BasicConsolidation
Requirements
------------
Metrics
*******
The *basic* strategy requires the following metrics:
============================ ============ ======= ===========================
metric service name plugins comment
============================ ============ ======= ===========================
``compute.node.cpu.percent`` ceilometer_ none need to set the
``compute_monitors`` option
to ``cpu.virt_driver`` in
the nova.conf.
``cpu`` ceilometer_ none
============================ ============ ======= ===========================
.. _ceilometer: https://docs.openstack.org/ceilometer/latest/admin/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
* - ``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
====================== ====== ============= ===================================
``migration_attempts`` Number 0 Maximum number of combinations to
be tried by the strategy while
searching for potential candidates.
To remove the limit, set it to 0
``period`` Number 7200 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
How to use it ?
---------------
.. code-block:: shell
$ openstack optimize audittemplate create \
at1 server_consolidation --strategy basic
$ openstack optimize audit create -a at1 -p migration_attempts=4
External Links
--------------
None.
|
