nginx - Unable to open primary script

Question

I got error message:

FastCGI sent in stderr: \"Unable to open primary script: /home/messi/web/wordpress/index.php (No such file or directory)\" while reading r

Answer 1

SELinux will cause this error on CentOS/RHEL 7+ by default :(

To test if SELinux is the source of your woes, do

setenforce 0

... and see if everything works. If that fixed it, you can leave SELinux off (weak, you're better than that), or you can turn it back on with

setenforce 1

... and then properly fix the issue.

If you do

tail -f /var/log/audit/audit.log

... you'll see the SELinux issue. In my case, it was denying PHP-FPM access to web files. You can run the following directives to fix it:

setsebool -P httpd_can_network_connect_db 1
setsebool -P httpd_can_network_connect 1

This actually didn't fix it for me at first, but then restoring SELinux context did it

restorecon -R -v /var/www

Hope that helps.