The following guest operating system versions are supported for SAP NetWeaver on Google Cloud Platform:
Windows Server 2012 R2 and 2016
SLES 11 SP4 and higher
RHEL 6 and higher
You can operate the following databases with SAP NetWeaver on Google Cloud Platform:
Microsoft SQL Server 2012 and higher (Windows guests)
HANA (Linux guests)
For a first overview on relevant SAP notes, OS and DB versions as well as for the planning, deployment, and operation guides to run SAP NetWeaver on the Google Cloud Platform, check my WIKI page SAP on Google Cloud Platform (GCP).
You can watch the page to stay informed for upcoming announcements and enhancements on this platform combination.