NGINX - FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream

Question

I got this error message when trying to set WordPress as a subdirectory. File not found. when view the URL example.com/blog

2020/05/05 20:55:56 [error] 906#906: *1 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, client: xxx.xxx.xxx.xxx, server: example.com, request: "GET /blog/ HTTP/1.1", upstream: "fastcgi://unix:/var/run/php/php7.2-fpm.sock:", host: "example.com"

example.conf

server {
    server_name example.com www.example.com;
    root /var/www/example/public;

    add_header X-Frame-Options "SAMEORIGIN";
    add_header X-XSS-Protection "1; mode=block";
    add_header X-Content-Type-Options "nosniff";

    index index.html index.htm index.php;

    charset utf-8;

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

    location = /favicon.ico { access_log off; log_not_found off; }
    location = /robots.txt  { access_log off; log_not_found off; }

    error_page 404 /index.php;

    location /blog {
        alias /var/www/blog;
        index   index.html index.htm index.php;
        try_files $uri $uri/ /blog/index.php?$args;
    }

    location ~ \.php$ {
        fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
        include fastcgi_params;
    }

    location ~ /\.(?!well-known).* {
        deny all;
    }
}

Malik Perang · Accepted Answer · 2020-05-06T18:44:03.463

Please try this config instead

server {
    listen 80;
    server_name example.vm www.example.vm;

    add_header X-Frame-Options "SAMEORIGIN";
    add_header X-XSS-Protection "1; mode=block";
    add_header X-Content-Type-Options "nosniff";
    index index.html index.htm index.php;

    charset utf-8;

    location / {
        root /var/www/laravel/public;
        try_files $uri $uri/ /index.php?$query_string;

        index index.html index.htm index.php;

        location ~ \.php$ {
            fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;
            fastcgi_index index.php;
            fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
            include fastcgi_params;
        }
    }

    location = /favicon.ico { access_log off; log_not_found off; }
    location = /robots.txt  { access_log off; log_not_found off; }

    error_page 404 /index.php;

    location /blog {
        root /var/www/;
        try_files $uri $uri/ /index.php?$args;

        location ~ \.php$ {
          fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;
          fastcgi_index index.php;
          fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
          include fastcgi_params;
        }
    }



    location ~ /\.(?!well-known).* {
        deny all;
    }
}

Final updated answer tested and works. The issue here is the location path setting of alias/root directory. Maybe you can refer to this for more info in future. Configure nginx with multiple locations with different root folders on subdomain

still same. is it because of the permission issues? – Nurdin May 06 '20 at 05:42 — Nurdin, May 06 '20 at 05:42
have you try to restart nginx & php-fpm ? – Malik Perang May 06 '20 at 05:52 — Malik Perang, May 06 '20 at 05:52

score 1 · Answer 2 · answered Jan 01 '23 at 16:21

This:

It has been suggested in a number of other "solutions" to this error that it has something to do with SCRIPT_FILENAME setting. I observed (eventually) that the parameter is set in a file, /etc/nginx/fastcgi.conf however in my config file, /etc/nginx/sites-available/x10.local.conf it has this directive: include fastcgi_params; Now there are both fastcgi_params and fastcgi_param files in the /etc/nginx/ directory. They appear to be identical except that the fastcgi_params file does not include the SCRIPT_FILENAME parameter. I added the line to the fastcgi_params, restarted php-fpm and nginx and found it finally worked.

score 0 · Answer 3 · answered Sep 18 '22 at 10:57

It has been suggested in a number of other "solutions" to this error that it has something to do with SCRIPT_FILENAME setting. I observed (eventually) that the parameter is set in a file, /etc/nginx/fastcgi.conf however in my config file, /etc/nginx/sites-available/x10.local.conf it has this directive: include fastcgi_params; Now there are both fastcgi_params and fastcgi_param files in the /etc/nginx/ directory. They appear to be identical except that the fastcgi_params file does not include the SCRIPT_FILENAME parameter. I added the line to the fastcgi_params, restarted php-fpm and nginx and found it finally worked.

NGINX - FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream

3 Answers3