Issue Server and websites are down

[qf53]

Server operating system version

CentOS 7.9.2009 x86_64

Plesk version and microupdate number

Plesk Obsidian 18.0.43.1

I get the 502 Bad Gateway error when I try to access the Plesk login page.

All the websites are down at the moment so I'm not too sure what to do to get back to running.

Any ideas?

 

[IgorG]

If you try to find this error message in Plesk KB articles you will see a lot of different reasons for this issue.
Need more details about your particular case.