Cloud SQL Instances can be resized at any time by changing the Database Type – which defines the amounts of RAM, CPU and local SSD storage allocated to an instance.
Changing Database Type
From the Cloud SQL instance view, click the
Resize button from the “Size”
Choose a new type and click
Restarting the instance
Following a successful resize the increased vCPU and local SSD allocations are usable straightaway, but the instance will need to be restarted to pick up the new RAM allocation.
The confirmation dialog gives you the option to
Restart Now or to click
Cancel if you plan to restart later at a more convenient time.
Depending on how busy the database is, there may be a brief interruption while
the underlying database engine service is restarted – so for production databases
you may wish to restart later by clicking
Restart from the instance view.