Metod to set file permissions and FS method in wordpress. To allow WordPress to configure wp-config.php during installation, update files during upgrades, and update the .htaccess file for pretty permalinks, give the server write permission on the files.
Change the owner of the wordpress directory and its contents to apache on Centos 7. Keep the group as staff, a group to which your user account belongs and give write permissions to the group.
[root@mailx work]# cd /var/www/html
[root@mailx html]# chown -R apache. wordpress-site2
[root@mailx html]# chmod -R g+w wordpress-site2
Add this to your wp-config.php at the end file.