SSH Terminal access with another administrative user
The root user is disabled on the server for security reasons.
It is required to configure SSH Terminal extensions to log in with another administrative user
Plesk Tech Support
shared this idea
We assume that this request is based on a typical configuration where "permitrootlogin" in the SSH configuration file is set to "false" and the requirement is to being able to use the SSH extension for Plesk admin accounts anyway. For that case the workround can be applied: Simply add the lines
Match Address 127.0.0.1
PermitRootLogin yes
to the /etc/ssh/sshd_config, then reload SSH service once (# service sshd reload). It will then still not be possible to login with "root" from external sources, but it will allow the extension to log you in with an admin account. https://support.plesk.com/hc/en-us/articles/4410634559250
-- PD