1 FastCGI sent in stderr: “Primary script unknown”

Question

My first time using Nginx, but I am more than familiar with Apache and Linux. I am using an existing project and when ever I am trying to see the index.php I get a 404 File not

Answer 1

I dont know how the $document_root is calculated but I resolved the issue , by really making sure that my document root is at /usr/share/nginx/ just wher the html folder exist

Answer 2

Ok, so 3 things I found after a day of struggling

1. For some reason I had already something running on port 9000 so I changed to 9001
2. My default site was intercepting my new one, once again I don't under stand why since it shouldn't, but I just unlinked it
3. Nginx doesn't automatically do the sym link for sites-available to site-enabled.

Hope this saves someone some trouble!

Here is a more detailed link in server fault: https://serverfault.com/questions/517190/nginx-1-fastcgi-sent-in-stderr-primary-script-unknown/517207#517207

Answer 3

That message from the fastcgi server usually means that the SCRIPT_FILENAME that it was given was not found or inaccessible as a file on its filesystem.

Checkout file permissions on /home/willem/git/console/frontend/www/index.php

Is it 644?

And /home/willem/git/console/frontend/www/

Is it 755?

Answer 4

"Primary script unknown" is caused by SELinux security context.

client get the response

File not found.

nginx error.log has the following error message

*19 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream

so just change security context type of web root folder to httpd_sys_content_t

chcon -R -t httpd_sys_content_t /var/www/show

there are 3 users for nginx/php-fpm config

/etc/nginx/nginx.conf

user nobody nobody;  ### `user-1`, this is the user run nginx woker process
...
include servers/*.conf;

/etc/nginx/servers/www.conf

location ~ \.php$ {
#   fastcgi_pass 127.0.0.1:9000;  # tcp socket
    fastcgi_pass unix:/var/run/php-fpm/fpm-www.sock;  # unix socket
    fastcgi_index index.php;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    include fastcgi_params;
}

/etc/php-fpm.d/www.conf

[www]
user = apache  ### `user-2`, this is the user run php-fpm pool process
user = apache

;listen = 127.0.0.1:9000  # tcp socket
listen = /var/run/php-fpm/fpm-www.sock  # unix socket

listen.onwer = nobody  ### `user-3`, this is the user for unix socket, like /var/run/php-fpm/fpm-www.sock
listen.group = nobody  # for tcp socket, these lines can be commented
listen.mode = 0660

user-1 and user-2 is not necessary to be the same.

for unix socket, user-1 need to be the same as user-3, as nginx fastcgi_pass must have read/write permission on the unix socket.

otherwise nginx will get 502 Bad Gateway, and nginx error.log has the following error message

*36 connect() to unix:/var/run/php-fpm/fpm-www.sock failed (13: Permission denied) while connecting to upstream

Answer 5

In case anyone had the same error: in my case the problem was the missing root directive inside the location block in nginx.conf, as explained in the Arch wiki