Apache directory listing: Permission denied

So, I want to achieve something which should be easy: I want my Apache webserver to deliver its automatically generated directory listing since it is about statics HTML and PDF files.

However, I always receive an HTTP 403 response.

The error log says:

AH01276: Cannot serve directory /var/www/html/my-website/: No matching DirectoryIndex (index.php,index.html,index.htm) found, and server-generated directory index forbidden by Options directive

And this is the output of ls -l /var/www/html/my-website:

drwxr-xr-x. 18 root root 4096 Jul  5 10:06 /var/www/html/my-website

And from getfacl /var/www/html/my-website:

getfacl: Removing leading '/' from absolute path names
# file: var/www/html/my-website
# owner: root
# group: root
user::rwx
group::r-x
other::r-x

This is, stripped down to the relevant aspects, the virtual host configuration section:

<VirtualHost 192.168.1.2:80>
    ServerName my-website.local
    AddDefaultCharset iso-8859-1
    DirectoryIndex index.php index.html index.htm
    Alias / /var/www/html/my-website/
    DocumentRoot /var/www/html/my-website/
    <Directory /var/www/html/my-website/>
        AllowOverride none
        Options +Indexes
    </Directory>
</VirtualHost>

So, since o+rx is set, I expect it to be readable. What else am I missing?

So, I can answer the question on my own, now. I post this answer here in case someone else stumbles over the same problem before spending 4 hours with it.

If the virtual configuration is correct, then probably a global configuration is not.

In this case, there was another configuration file named welcome.conf in place, obviously a default file from CentOS, which prevented the directory index from being delivered. The intention of this configuration file is to load the welcome page instead of listing a directory. The context of this configuration file is global.

You probably have

Options -Indexes

Somewhere related to my-website definition.

Change it to

Options +Indexes

And reload/restart/refresh.

Otherwise check for Selinux contexts with:

# ls -la --context /var/www/html/my-website
# chcon -R system_u:object_r:httpd_sys_content_t /var/www/html/my-website/