Issue Recurring crash of the Plesk dedicated server (error on all sites) 504 Bad Gateway - nginx

[Vincentged]

Hello everybody,

We are on a dedicated server: CentOS Linux 7.6.1810 (Core) // Plesk Obsidian 18.0.38
Characteristics: Server SP-32 - Intel Xeon E3-1270v6 - 32GB DDR4 ECC 2400 MHz - SoftRaid 2x2TB
With around 500 websites.

We tried a solution without success:
- plesk db "SHOW VARIABLES LIKE 'max_connections'" which we set to 600.
But still the same problem the server crashes once a day on average.

Any suggestions??

Thanks

 

[m3lezZ]

Hello,
it would be helpful if you could provide some more informations to investigate the problem ...
What means server crashes?

Could you provide some logs?

/var/log/messages
journalctl -u nginx.service
/var/www/vhosts/system/<domain_name>/proxy_error_log

kind regards,

 

[WebHostingAce]

Hi,

'max_connections'" to 600 and "504 Bad Gateway - NGINX" are not related.

You should look into your NGINX configuration.