Set a new password by booting your Linux VPS in single-user mode
EDIS does not install KVM guest drivers in its virtual machines. You receive authentic OS images, without any open doors. This comes at a price, though. It is not possible to change the root password from the administration panel. Nevertheless, it is possible to set a new password after booting the machine in single-user mode using VNC. Follow these easy steps if you no longer have access to your Linux operating system, and you need to set a fresh Linux root password on your KVM.1
Start by enabling VNC
2
Launch noVNC session
3
Reboot your VPS
4
Enter the Grub (boot loader) menu
Press any key to enter the Grub (boot loader) menu, once the following screen shows
5
Press e on your keyboard to edit the kernel boot options.
6
Highlight the second stanza (line) and press e again.
7
Edit the line highlighted in the previous step
You will now be able to edit the line highlighted in the previous step. Simply add 
1 at the end of the line as indicated in the following screenshot, then confirm by pressing Enter.On Debian, add init=/bin/bash instead of 1 at the end of the line.8
Now you see the Grub stanzas as shown in step 5
Press You will be asked to enter a new password for the user root.
b to continue booting, using the modified configuration. Linux will now boot into single-user mode, allowing for some special administrative tasks. Single-user mode gives you root access without entering the root password, so you can set a new one. Once the system is up and running, type the following command to update the root password:9
Once finished, reboot your VPS and you will be able to use the newly set root password