NGINX - 2 Threads 504 Error

[email669]

Hi,

I have been trying to figure out what is causing random 504 errors on my server.

I have been able to replicate the error by opening more than 1 http connection at a time. If I open 2 connections at the same time, the first connection will receive data but all other connections will receive a 504 error.

I think I need to add the NGINX directives

location / {
proxy_http_version 1.1;
proxy_set_header Connection "";
}

When I try to place this line of code in the Additional NGINX directives, it tells me

Invalid nginx configuration: nginx: [emerg] duplicate location "/" in /var/www/vhosts/system/domain.com/conf/vhost_nginx.conf:13 nginx: configuration file /etc/nginx/nginx.conf test failed

Looking through nginx files, I see many of them say

# ATTENTION!
# DO NOT MODIFY...

How can I set my proxy_http_version variable correctly with Plesk not overriding the setting?

 

[email669]

I have tried editing the files

/usr/local/psa/admin/conf/templates/default/server/nginxVhosts.php
/usr/local/psa/admin/conf/templates/default/nginxWebmailPartial.php

and running /usr/local/psa/admin/bin/httpdmng --reconfigure-all
service httpd restart
service nginx restart

But the files in /var/www/vhosts/system/site.com/conf/ are never with the new variables set.

 

[email669]

I was able to get it working, but i'm not really sure which file did it.

There are a couple more inside of /usr/local/psa/admin/conf/templates/default/ that I changed.

Thanks!

 

[UFHH01]

Hi email669,

it's really a BAD idea, to change DEFAULT templates, they will get overwritten in case of possible updates/upgrades/patches. If you really want to change templates, please read and follow:

Changing Virtual Hosts Settings Using Configuration Templates ( online documentation: Advanced Administration Guide, Parallels Plesk Panel 11.5 for Linux )​