Hi @Gras - you’re probably referring to VPS (VM), not VPN… just FYI…
Regarding adding SWAP file (point 6) - I would suggest not to create one, rather opt for more RAM. It will really pay off.
Some recommendations from DigitalOcean:
You basically don’t need to use SWAP on VPS. SWAP may be good option when running memory intensive apps, using hibernation or having HDD.
You can basically guess whether cloud provider is good in its field or not by checking for SWAP partition/file. If it is created by default and the disk is HDD, then it’s often times a bad sign or the provider just doesn’t care about using resources effectively.
Gl with config.