How to Change Parameters of an Already Existing and Configured VM?
The so called flavour (amount of RAM, number of CPUs, system disk size) for an existing VM can be changed. Go to „instances” menu, then select „resize instance” from the VM action menu. Select the desired flavour. After resizing you may test if the machine works properly in the new config, then choose either „confirm resize” or „revert resize”.
Note: You may lose connection (be logged off) as well as some running processes may stop working during resizing and reverting.
Caution: Reducing the size is not always possible or may cause system/software instability!
Other parameters of the machine (network connections, addresses, network security) may be directly changed from the instance action menu.