Train Series Release Notes

4.0.0

Prelude

This release supports placement integration.

New Features

• In this release, Zun compute agent will report local resource availability/utilization to placement API. In addition, Zun scheduler will get allocation candidates from placement API and claim container allocation in placement.

Upgrade Notes

• Since this release, operators need to configure each compute node that runs both Zun compute agent and Nova compute agent as follows:

  [compute]
  host_shared_with_nova = true
  

  By setting host_shared_with_nova to true, Zun compute agent and Nova compute agent will share a resource provider for the compute node in placement. In particular, both Nova instances and Zun containers might claim allocation on the same resource provider. By default, host_shared_with_nova is false which means Zun compute agent will create its own resource provider for the compute node.