Had an interesting question today. Customer wanted to deploy a cluster in the Google Cloud and wanted to put their File Share Witness on a Windows Container in an Instance Group. The file share itself would reside on persistent storage. There would only ever be one container instance running, but health checks would ensure that if the instance crashed that a new instance would be automatically provisioned.
Behind the scenes when a new instance is provisioned the computer name and SID would change, but the file share would still be reachable by the same CNAME and presumably have the same permissions and the exact same contents as the instance that crashed.
I'm not overly familiar with Instance Groups in Google Cloud, but f it works as described above it seems like it might be a viable option to host a File Share Witness. I'm going to check it out, but curious to know what you think about this idea. Of course I know Azure Cloud Witness could still work, but they would like to keep it all in the Google Cloud.
David A. Bermingham, MVP, Senior Technical Evangelist, SIOS Technology Corp