Drupal ignore the server permission and display permission error

Question

I have installed a Drupal site, after several custom changes I flushed all caches, but this action cause that sites/default/files folder do not have permissions and drupal canot change nothing under this folder, I have checked my CentOS permissions and all it's fine, 775 for all folders for user and group apache:apache,

775 for sites/default/files, I have tried 777 too and not work.!

But Drupal show me this message

What it's bad in my permission? thanks for your help

Answer 1

If SELinux is active (getenforce), restore the file context (restorecon -Fvr /var/www/html).

Answer 2

It's hard to tell with so little data.

1. Why is drupal trying to override an existing image?
   • Answer: Drupal isn't trying to override an existing image but create a new (the path does not exist)
2. What is the permissions on the file in question?
   • Answer: same as 1
3. Is the file in the public, private or temp directory?
   • Answer: public
4. Did you try to re-save the public/private/tmp directory locations (in drupal)?
   • Answer: Yes, didn't help