watcher/doc/source/strategies/workload_balance.rst

Workload Balance Migration Strategy

Synopsis

display name: Workload Balance Migration Strategy

goal: workload_balancing

watcher.decision_engine.strategy.strategies.workload_balance.WorkloadBalance

Requirements

None.

Metrics

The workload_balance strategy requires the following metrics:

metric	service name	plugins	comment
cpu_util memory.resident	ceilometer ceilometer	none none

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

Planner

Default Watcher's planner:

watcher.decision_engine.planner.weight.WeightPlanner

Configuration

Strategy parameters are:

parameter	type	default Value	description
metrics	String	'cpu_util'	Workload balance base on cpu or ram utilization. choice: ['cpu_util', 'memory.resident']
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 ?

$ openstack optimize audittemplate create \
  at1 workload_balancing --strategy workload_balance

$ openstack optimize audit create -a at1 -p threshold=26.0 \
        -p period=310 -p metrics=cpu_util

External Links

None.