I'm currently trying to configure a Wordpress Multisite using NGINX. The NGINX config test passes: But I simply get a File Not Found. page when I load the site. From my config: And from my nginx error.log: My docroot is /var/www/html and the logs seem to show requests are being sent to the right place: Not really sure where to

NGINX/FastCGI config issues causing 404s

I’m currently trying to configure a WordPress Multisite using NGINX. The NGINX config test passes:

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

But I simply get a File Not Found. page when I load the site. From my config:

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                  '$status $body_bytes_sent "$http_referer" '
                  '"$http_user_agent" "$http_x_forwarded_for"';

    include       conf.d/*.conf;

    map $http_upgrade $connection_upgrade {
        default     "upgrade";
    }

server {
    listen        80 default_server;
    access_log    /var/log/nginx/access.log main;

    client_header_timeout 60;
    client_body_timeout   60;
    keepalive_timeout     60;
    gzip                  off;
    gzip_comp_level       4;
    gzip_types text/plain text/css application/json application/javascript application/x-javascript text/xml application/xml application/xml+rss text/javascript;

    server_name <my-domain>.com ;

    access_log   /var/log/nginx/gnbwpms.access.log;
    error_log    /var/log/nginx/gnbwpms.error.log debug;

    index index.php;

    if (!-e $request_filename) {
        rewrite /wp-admin$ $scheme://$host$uri/ permanent;  
        rewrite ^(/[^/]+)?(/wp-.*) $2 last;                     
        rewrite ^(/[^/]+)?(/.*.php) $2 last;                   
    }

    location / {
            try_files $uri $uri/ /index.php?$args ;
    }

    location ~ .php$ {
            try_files $uri =404;
            include /etc/nginx/fastcgi_params;
            #fastcgi_pass 127.0.0.1:9000;
            fastcgi_pass unix:/var/run/php-fpm/www.sock;
    fastcgi_index index.php;
    }

    location ~* ^.+.(ogg|ogv|svg|svgz|eot|otf|woff|mp4|ttf|rss|atom|jpg|jpeg|gif|png|ico|zip|tgz|gz|rar|bz2|doc|xls|exe|ppt|tar|mid|midi|wav|bmp|rtf)$ {
            access_log off; log_not_found off; expires max;
    }

    location = /robots.txt { access_log off; log_not_found off; }
    location ~ /. { deny  all; access_log off; log_not_found off; }    }
}

And from my nginx error.log:

2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record byte: 01
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record byte: 07
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record byte: 00
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record byte: 01
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record byte: 00
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record byte: 16
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record byte: 02
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record byte: 00
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record length: 22
2022/01/04 14:44:43 [error] 8368#8368: *552 FastCGI sent in stderr: "Primary script 
   unknown" while reading response header from upstream, client: <client IP>, 
server: <my-domain>.com, request: "GET / HTTP/1.1", upstream: " 
   fastcgi://unix:/var/run/php-fpm/www.sock:", host: "<server IP>"
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record byte: 01
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record byte: 06
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record byte: 00
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record byte: 01
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record byte: 00
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record byte: 51
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record byte: 07
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record byte: 00
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi record length: 81
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi parser: 0
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi header: "Status: 404 Not Found"
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi parser: 0
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi header: "Content-type: text/html; charset=UTF-8"
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi parser: 1
2022/01/04 14:44:43 [debug] 8368#8368: *552 http fastcgi header done
2022/01/04 14:44:43 [debug] 8368#8368: *552 HTTP/1.1 404 Not Found

My docroot is /var/www/html and the logs seem to show requests are being sent to the right place:

2022/01/04 14:44:43 [debug] 8368#8368: *552 trying to use file: "/index.php" 
"/var/www/html/index.php"
2022/01/04 14:44:43 [debug] 8368#8368: *552 try file uri: "/index.php"
2022/01/04 14:44:43 [debug] 8368#8368: *552 generic phase: 14

Not really sure where to go from here, so any help would be greatly appreciated.

Answer

Glad you managed to sort this. As mentioned in my comment, adding the following line to your server block resolved the issue:

SCRIPT_FILENAME $document_root$fastcgi_script_name

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Answer