Error: NeutronClientException when creating large number of instances via HEAT stack creation (the proxy server could not handle the request)

Solution Verified - Updated -

Issue

  • When trying to deploy a new stack or use HEAT resource templates to provision a large number of instances at once.
  • Some Neutron::Port creations by HEAT will randomly fail during the stack creation.

Environment

  • Red Hat OpenStack Platform 13 (RHOSP 13)
  • Red Hat OpenStack Platform 16 (RHOSP 16)

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