watcher/doc/source/strategies/basic-server-consolidation.rst

Basic Offline Server Consolidation

Synopsis

display name: Basic offline consolidation

goal: server_consolidation

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 cpu	ceilometer ceilometer	none none	need to set the compute_monitors option to cpu.virt_driver in the nova.conf.

Cluster data model

Default Watcher's Compute cluster data model:

watcher.decision_engine.model.collector.nova.NovaClusterDataModelCollector

Actions

Default Watcher's actions:

action	description
migration	watcher.applier.actions.migration.Migrate
change_nova_service_state	watcher.applier.actions.change_nova_service_state.ChangeNovaServiceState

Planner

Default Watcher's planner:

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.decision_engine.goal.efficacy.specs.ServerConsolidation.get_global_efficacy_indicator

How to use it ?

$ openstack optimize audittemplate create \
  at1 server_consolidation --strategy basic

$ openstack optimize audit create -a at1 -p migration_attempts=4

External Links

None.