It is worth mentioning that Google Groups is a place for non-technical how-to questions (Google Groups hosts discussion forums where you're likely to find information like service status updates and release notes, and ranging from book recommendations to creative shortcuts) [1].
For your use case, I would suggest reaching out to Server Fault [2] or Stack Overflow [3] where Google also participates that can help you find answers or troubleshoot problems.
On a separate note, if you have an existing GCP Support plan, we would suggest filing a case with us and we might be able to provide architectural guidance (through Solution Architects or Customer Engineer/Technical Account Manager).