...
You can change the size of an instance by changing its flavor. This rebuilds the instance and therefore results in a restart
Web Interface
...
1.
In Web Interface
Compute->Instances, select the VM you wish to resize
...
Shut down the Instance and create a snapshot to prevent data loss.
...
Click the drop-down menu on the right-hand side (in
Actionscolumn) and selectRESIZE INSTANCE
...
Select the new flavor from the drop-down menu in the pop-up.
Click on the
RESIZEbutton
...
Command Line
Get the serverID and flavorID
...