Basic Offline Server Consolidation

updated: 2019-02-13 12:00

Basic Offline Server Consolidation¶

Synopsis¶

display name: Basic offline consolidation

goal: server_consolidation

Requirements¶

Metrics¶

The basic strategy requires the following metrics:

metric	service name	plugins	comment
`compute.node.cpu.percent`	ceilometer	none
`cpu_util`	ceilometer	none

Cluster data model¶

Default Watcher’s Compute cluster data model:

Actions¶

Default Watcher’s actions:

action description

migration

change_nova_service_state

action	description
`migration`
`change_nova_service_state`

Planner¶

Default Watcher’s planner:

Weight planner implementation

This implementation builds actions with parents in accordance with weights. Set of actions having a higher weight will be scheduled before the other ones. There are two config options to configure: action_weights and parallelization.

Limitations

This planner requires to have action_weights and parallelization configs tuned well.

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¶

[{'value': 0, 'name': 'released_nodes_ratio', 'unit': '%', 'description': u'Ratio of released compute nodes divided by the total number of enabled compute nodes.'}]

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.