Nginx is currently set to run as the user "nginx":
[root@localhost whmcs]# grep user /etc/nginx/nginx.conf
user nginx;
PHP-FPM is set to run as the "nginx" user too:
[root@localhost whmcs]# grep '^user\|^group' /etc/php-fpm.d/www.conf
user = nginx
group = nginx
They are definitely running as the "nginx" user:
[root@localhost whmcs]# ps aux | grep nginx | grep -v grep
nginx 55067 0.0 0.2 355128 9568 ? S 15:54 0:00 php-fpm: pool www
nginx 55068 0.0 0.3 359488 13976 ? S 15:54 0:00 php-fpm: pool www
nginx 55069 0.0 0.2 355128 9596 ? S 15:54 0:00 php-fpm: pool www
nginx 55070 0.0 0.3 359508 13952 ? S 15:54 0:00 php-fpm: pool www
nginx 55071 0.0 0.3 358712 13200 ? S 15:54 0:00 php-fpm: pool www
nginx 55229 0.0 0.3 358456 12896 ? S 15:54 0:00 php-fpm: pool www
root 62624 0.0 0.0 60572 1288 ? Ss 16:15 0:00 nginx: master process /usr/sbin/nginx
nginx 62625 0.0 0.0 63096 2688 ? S 16:15 0:00 nginx: worker process
nginx 62626 0.0 0.0 63096 2204 ? S 16:15 0:00 nginx: worker process
nginx 62628 0.0 0.0 63096 2204 ? S 16:15 0:00 nginx: worker process
nginx 62629 0.0 0.0 63096 2204 ? S 16:15 0:00 nginx: worker process
PHP-FPM too:
[root@localhost whmcs]# ps aux | grep php-fpm | grep -v grep
root 55064 0.0 0.2 352152 11584 ? Ss 15:54 0:00 php-fpm: master process (/etc/php-fpm.conf)
nginx 55067 0.0 0.2 355128 9568 ? S 15:54 0:00 php-fpm: pool www
nginx 55068 0.0 0.3 359488 13976 ? S 15:54 0:00 php-fpm: pool www
nginx 55069 0.0 0.2 355128 9596 ? S 15:54 0:00 php-fpm: pool www
nginx 55070 0.0 0.3 359508 13952 ? S 15:54 0:00 php-fpm: pool www
nginx 55071 0.0 0.3 358712 13200 ? S 15:54 0:00 php-fpm: pool www
nginx 55229 0.0 0.3 358456 12896 ? S 15:54 0:00 php-fpm: pool www
My www folder for that domain is /var/www/whmcs and it's owned by "nginx":
[root@localhost www]# pwd
/var/www
[root@localhost www]# ls -lah | grep whmcs
drwxr-xr-x. 19 nginx nginx 4.0K Feb 7 16:15 whmcs
There doesn't seem to be anything relevant in /var/log/php-fpm/error.log or /var/log/nginx/error.log.
My installation for WHMCS on that domain still gives an error "Cannot write to web folder".
I have also disabled SELinux.
Can someone please give me some insight as to why this might be happening?
ADDITIONAL INFO BELOW
EDIT: Peculiarly, it doesn't work even if I change the permissions for /var/www/whmcs recursively to 777.
EDIT 2: I gave shell login to the "nginx" user. It CAN create files in the /var/www/whmcs folder when logged in with it. Error on the page still the same though.
EDIT 3: Ownership and permission info requested by user @ezra-s:
[root@localhost var]# namei -mxo /var/www/whmcs
f: /var/www/whmcs
Dr-xr-xr-x root root /
drwxr-xr-x root root var
drwxr-xr-x root root www
drwxr-xr-x nginx nginx whmcs
EDIT 4: @Orphans, I don't seem to have /etc/php*/fpm/pool/conf.d/${CONFFILE}. This is all my /etc/php* files on CentOS 6.7:
[root@localhost etc]# find /etc/php*
/etc/php.d
/etc/php.d/curl.ini
/etc/php.d/fileinfo.ini
/etc/php.d/json.ini
/etc/php.d/phar.ini
/etc/php.d/zip.ini
/etc/php.d/pdo.ini
/etc/php.d/pdo_sqlite.ini
/etc/php.d/sqlite3.ini
/etc/php.d/mysql.ini
/etc/php.d/mysqli.ini
/etc/php.d/pdo_mysql.ini
/etc/php.d/ioncube.ini
/etc/php.d/gd.ini
/etc/php-fpm.conf
/etc/php-fpm.d
/etc/php-fpm.d/www.conf
/etc/php.ini
Also here is the virtualhost file for the domain (I'm using a hosts file to access it):
[root@localhost etc]# cat /etc/nginx/sites-available/whmcs.com.conf
server {
listen 80;
root /var/www/whmcs;
index index.php;
server_name whmcs.com www.whmcs.com;
location / {
try_files $uri $uri/ =404;
}
error_page 404 /404.html;
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/whmcs;
}
location ~ \.php$ {
try_files $uri =404;
fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}
}
