Installing

Installing and strenghtening new VPS Linux server.

In many virtualized environments you can automate installation using cloud-init config file.

Here is an example (ToDo: Jinja templating with cloud-init)

Steps for manual installation

Update system

apt update
apt upgrade

Change root passwor

passwd

Add sudo user

adduser myusername
usermod -aG sudo myusername

Add authorized public keys for logging in over ssh.

mkdir .ssh
nano .ssh/authorized_keys
... add public keys one per row

Disable password authentication for ssh. ⚠️ Be carefull not to disable password logins without adding authorized_keys.