Cannot see any site after reboot

[callistar]

Hello!

We made a reboot via Plesk to our dedicated server and all are working properly (ftp, emails) but we cannot see any domain's site on web explorers.

Any suggestion?

 

[IgorG]

Have you checked that webserver is up and running at least?

 

[callistar]

Webserver is up and running and we can access by FTP and emails are working properly...

 

[callistar]

I forgot to mention that after reboot I had these 2 problems at Plesk Server Health:

nginx CPU usage 794,7% and rising
CPU total usage 14948007.4% used and rising

Both became normal but only problem is I cannot see any site under server.

 

[callistar]

I think I found the solution... I made restart to Reverse Proxy Server (nginx) at Tools / Services and sites came back...