Question Enable Xdebug for Subdomain Only?

[Username33]

Server operating system version

AlmaLinux 9.5

Plesk version and microupdate number

18.0.68 Update #2

Hi everyone,

I have a domain – let’s call it example.com – with a subdomain dev.example.com. I’m trying to figure out if it’s possible to enable Xdebug only for the subdomain.

I’ve added the following configuration under the “Additional directives” section for dev.example.com:

[Xdebug]
zend_extension=xdebug.so
xdebug.start_with_request=yes
; etc.

However, Xdebug doesn’t seem to be working.
Any ideas on what I might be missing?

Thanks in advance!

 

[Sebahat.hadzhi]

Loading specific PHP extension on a per domain/subdomain-basis is not possible at this point. The workaround we can suggest is to use a dedicated PHP-FPM handler for the subdomain in question.

 

[alvarezcruz]

Yes, switch it to a dedicated PHP handler. Also make sure that xdebug is enabled in Tools & Settings > PHP > Dedicated PHP handler or those directives won't do anything. After adding the directives, restart the dedicated handler service.

 

[Username33]

Thanks for the help! I’ve now managed to get Xdebug working for the subdomain only.

What worked was setting the subdomain to use a Dedicated FPM application, adding the Xdebug config under Additional directives, and then restarting the dedicated handler service.

I had also tried enabling Xdebug under Tools & Settings > PHP > Dedicated PHP handler, but that ended up enabling it for the non-dedicated handler too – which I didn’t want – so I left it disabled there and just stuck with the subdomain-specific setup.

Appreciate the input – this helped a lot!

 

[Username33]

Just wanted to say – really cool to see staff jumping in to help out here on the forums. It was super helpful!