In Linux world, SSH is a life. Especially, now with remote work, data center, servers without graphical interface. If you can't login via SSH, even with a correct password but other user accounts is able to login. Then the person need to check with HR whether he or she is still on the payroll. :) 😄 Of course, glitch, errors and other issues will always be a part of this technology. Nothing is perfect in this world, so errors, technological issues will always be there it won't go away. So, what will will you do if you are sure that the SSH password and username is correct? Like you can login to Server 1, Server 2 but unable to login with Server 3 using the same credentials? If other users with sudo credentials are still able to login, the sudo account can be used to troubleshoot the specific SSH account that is having the issue. What would be the first thing to do? Well, joke as it seems that "restart works always" but the reality is not far from there. Restart SSH...
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