openstack/watcher
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c1a5e443fe
watcher/doc/source/strategies/vm_workload_consolidation.rst
chenke 63afd8259a Update doc for vm_workload_consolidation strategy 
Actually, the metric "cpu_util" and "memory.resident" are necessary
in vm_workload_consolidation.py, according to line 75. So modify
this document about this part.

Change-Id: I648f341184a0b42d88dcb4c934af989997fe3fea
2018-11-19 17:19:25 +08:00

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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

cpu_util memory.resident memory disk.root.size

ceilometer ceilometer ceilometer ceilometer

none none 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

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