Running Wordpress/NGINX from different path - php

Question

Im learning NGINX, so any help is really appreciated.
I have the frontend of a website running as the root of mysite.com, and now I want to run wordpress from mysite.com/blog.
My file structure is:
/srv/mysite/frontend
/srv/mysite/wordpress
this is the error i've been getting from the nginx logs
2020/03/29 00:09:03 [error] 23049#23049: *39 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, client: XXXXXXX, server: www.mysite.com, request: "GET /api HTTP/1.1", upstream: "fastcgi://unix:/run/php/php7.2-fpm.sock:", host: "mysite.com"
and this is my nginx config file so far
listen 80 default_server;
server_name www.mysite.com mysite.com;
charset utf-8;
location ^~ /blog {
root /srv/mysite/wordpress;
}
location ~ \.php$ {
fastcgi_pass unix:/run/php/php7.2-fpm.sock;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_param SCRIPT_NAME $fastcgi_script_name;
}
location / {
root /srv/mysite/frontend/dist;
try_files $uri /index.html;
}
}

Answer 1

This error message shows either the wrong path of the sock file or the permissions. Make sure the php sock file exists in the path /run/php/php7.2-fpm.sock and change the permissions of the file.
For Debian
chown -R wwww-data:www-data /run/php/php7.2-fpm.sock
For Rhel
chown -R nginx:nginx /run/php/php7.2-fpm.sock
Also, you can try this config.
location /blog {
root /srv/mysite/wordpress;
}
location ~ \.php$ {
try_files $uri /index.php =404;
fastcgi_split_path_info ^(.+\.php)(/.+)$;
fastcgi_pass unix:/run/php/php7.2-fpm.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;