openstack/watcher
Code Issues Proposed changes
a7b24ac6a5
watcher/doc/source/strategies/vm_workload_consolidation.rst
licanwei 90291923a1 Update strategy doc 
Ceilometer removed cpu_util metric in [1].
Another metric compute.node.cpu.percent need to set
compute_monitors option to cpu.virt_driver in the
nova.conf, we should remind user about these.
[1]: https://review.opendev.org/#/c/580709/

Change-Id: I89306ef7c26fa2927945bd4f3ee88b670511d147
2019-06-20 10:57:05 +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

cpu_util has been removed since Stein.

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