With the Linux rescue system, you can log in on your server even if it is no longer accessible over the network. It is a Debian minimal system. After you have booted your server into the rescue system, you can back up important data, for example.
You are in the Infrastructure > Servers section of the Cloud Panel.
Click on the desired server.
Click Actions > Restart.
Activate the Rescue System method and select the Linux Rescue System.
Click Yes and the server will boot into the Linux rescue system.
To log in to your Linux rescue system, use the credentials displayed to establish an encrypted network connection to your server via SSH.