Proxmox

So if you’re using Proxmox you need to open up ssh and run the following commands:

1. Setup a root password

sudo passwd root

2. Enable ssh

nano /etc/ssh/sshd_config

3. Change the following line:

PermitRootLogin without-password

to PermitRootLogin yes

4. Restart ssh

systemctl restart sshd

sumber : https://gist.github.com/dragonfire1119/8962678cf914e88fe7cccb649c9f5236