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Issue plesk connect() failed (111: Connection refused) while connecting to upstream

stefanoostwegel

Basic Pleskian
Hello,

I keep having issues with my website.

Symptoms:
the user sees 502 nginx error on screen.​

The log shows:
plesk connect() failed (111: Connection refused) while connecting to upstream​

Information about my server:
Plesk Obsidian Centos 6​
Version 18.0.24, last updated on Feb 27, 2020 06:06 AM​
PHP 7.3 FPM nGinx​
The problem only occurs on one domain. All other domains do not have this problem.

I did the following actions without results:
I can't seem to find whats going on. Any good suggestions?

Cheers.
 
i have the same problem i have a server with the latest version of plesk and centos 7.7 with 40 web domains and 3 ip addresses.
on 1 address we found that it does not work while the other domains correctly I also checked fail2ban and it is correctly configured and I found in the log and I found an ip address of my server fail2ban.actions [3547]: NOTICE [plesk-apache] and then is becoming recidivist can this be the problem?
 
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