Iam currently facing the same issue. I think the issue has something to do with the auth url parameter which passed to the heat stack.
In the keystone-apache-public-access.log logs i can see that following endpoint is called during the deployment but it returns 404
POST /auth/tokens HTTP/1.1" 404 232 10372 "-" "curl/7.69.1"
Can you check the auth url parameter in your heat stack? Mine is set to: https://xxxxxxxxx:5000
/v3/auth/tokens seems to work.
Iam currently facing the same issue. I think the issue has something to do with the auth url parameter which passed to the heat stack.
In the keystone- apache- public- access. log logs i can see that following endpoint is called during the deployment but it returns 404
POST /auth/tokens HTTP/1.1" 404 232 10372 "-" "curl/7.69.1"
Can you check the auth url parameter in your heat stack? /xxxxxxxxx: 5000
Mine is set to: https:/
/v3/auth/tokens seems to work.