Why are instances being created on a controller in OpenStack HA environment?

Solution Verified - Updated -

Issue

  • New instances are being created on a controller instead of compute nodes
  • nova service-list shows nova-compute service running on controllers
  • Instances are getting provisioned on controller nodes
  • Why are the controllers acting as hypervisors in a highly-available OpenStack environment?

Environment

  • Red Hat OpenStack Platform 7.0
  • Red Hat OpenStack Platform 8.0
  • Red Hat OpenStack Platform 9.0
  • Red Hat OpenStack Platform 10.0

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