Egor Panfilov 92dad3be2d Several fixes of strategies docs

Removed duplicates of strategies descriptions, added references to
that descriptions instead of module descriptions.

Change-Id: Ife396ddce5c3cc926cc111f1ff1abd3a42c22561

2018-03-28 22:53:17 +03:00

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VM Workload Consolidation Strategy

Synopsis

display name: VM Workload Consolidation Strategy

goal: vm_consolidation

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
`memory` `disk.root.size`	ceilometer ceilometer	none none

The following metrics are not required but increase the accuracy of the strategy if available:

metric	service name	plugins	comment
`memory.resident` `cpu_util`	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

change_nova_service_state

watcher.applier.actions.change_nova_service_state.ChangeNovaServiceState

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
`period`	Number	3600	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

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 ?

$ 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

3.3 KiB Raw Blame History