Outlet Temperature Based Strategy¶
Synopsis¶
display name: outlet_temperature
goal: thermal_optimization
Outlet (Exhaust Air) temperature is a new thermal telemetry which can be used to measure the host’s thermal/workload status. This strategy makes decisions to migrate workloads to the hosts with good thermal condition (lowest outlet temperature) when the outlet temperature of source hosts reach a configurable threshold.
Requirements¶
This strategy has a dependency on the host having Intel’s Power Node Manager 3.0 or later enabled.
Metrics¶
The outlet_temperature strategy requires the following metrics:
metric | service name | plugins | comment |
---|---|---|---|
hardware.ipmi.node.outlet_temperature |
ceilometer | IPMI |
Cluster data model¶
Default Watcher’s Compute cluster data model:
Nova cluster data model collector
The Nova cluster data model collector creates an in-memory representation of the resources exposed by the compute service.
Actions¶
Default Watcher’s actions:
action description migration
Migrates a server to a destination nova-compute host
This action will allow you to migrate a server to another compute destination host. Migration type ‘live’ can only be used for migrating active VMs. Migration type ‘cold’ can be used for migrating non-active VMs as well active VMs, which will be shut down while migrating.
The action schema is:
schema = Schema({ 'resource_id': str, # should be a UUID 'migration_type': str, # choices -> "live", "cold" 'destination_node': str, 'source_node': str, })The resource_id is the UUID of the server to migrate. The source_node and destination_node parameters are respectively the source and the destination compute hostname (list of available compute hosts is returned by this command:
nova service-list --binary nova-compute
).
Configuration¶
Strategy parameter is:
parameter | type | default Value | description |
---|---|---|---|
threshold |
Number | 35.0 | Temperature threshold for migration |
Efficacy Indicator¶
None
Algorithm¶
For more information on the Outlet Temperature Based Strategy please refer to: https://specs.openstack.org/openstack/watcher-specs/specs/mitaka/implemented/outlet-temperature-based-strategy.html
How to use it ?¶
$ openstack optimize audittemplate create \
at1 thermal_optimization --strategy outlet_temperature
$ openstack optimize audit create -a at1 -p threshold=31.0