Nginx variable for fastcgi_pass

HTF asked:

I came across this this topic and I’m wondering if there is an option/variable for the fastcgi_pass directive to define different unix domain sockets i.e.: fastcgi_pass unix:/var/run/php-fpm/www.sock; would be something like: fastcgi_pass unix:/var/run/php-fpm/$fastcgi_socket;?

My answer:

There’s no pre-existing variable, no. But you can use whatever socket you need to use, so long as the socket file exists, and php-fpm is configured to use it.

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