502 Ngix errors since last update

[Hellokevin111]

I have been seeing the server stall out, with 502 error.

Restarting apache doesn't fix it.

Any idea how to tweak this? Server is still 100% accessible via ssh and ftp.

 

[scsa20]

Tried disabling and re-enabling Nginx? How about reconfiguring the domains? https://kb.odin.com/en/123735 provides information about it.

Basically you'll want to run the following commands

/usr/local/psa/admin/bin/nginxmng --disable
/usr/local/psa/admin/bin/nginxmng --enable

Then you want to make sure it shows enabled:

/usr/local/psa/admin/bin/nginxmng --status

If it shows enabled and still get an error 502 then you'll want to reconfigure the domains but running the following command:

/usr/local/psa/admin/sbin/httpdmng --reconfigure-all

 

[Thomas Poisl]

Look at dash's post in the end of this thread: https://talk.plesk.com/threads/erro...-atomic-basic-modsecurity.336154/#post-793112

I guess this is related to the Web Application Firewall issue that was recently resolved.

The knowledgebase contains details: https://kb.odin.com/en/127737

 

[Roderic]

I've had the same issues after the last update of Plesk. But also when I disable Nginx, I get 503 error every now and then instead. But sites are responding really slow/sluggish.
I've looked at the load of my server and all seems well. So I'm wondering what is causing this.

When I installed php 7.0 as an additional package, did that affect anything else perhaps? Or is there something in the last update that's causing the issues? I'm thinking of a new config file somewhere that limits connections or something similar.