Heat stack update times out with HTTPConnectionPool Read timed out error

Solution Verified - Updated -

Issue

  • Heat Stack Update Timeout with error :

    HTTPConnectionPool(host='169.254.169.254', port=80): Read timed out. (read timeout=10.0)
    
  • Large environment consisting around 70 overcloud nodes, stack update fails with above error

Environment

  • Red Hat Openstack Platform 10

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