Installing Drupal

I'm reading up on this topic and I am confused.  

The people visiting my website have to have the url of my website in the header?  

Some visits are spoofing the url of my own website or others?

This just doesn't make sense to me yet.  Could someone provide a use scenario, like, what a proper url header/referal looks like and what a bad one looks like and why attackers do this?  

Or link to same, thanks. 

I have two AWS EC2 instances setup for the same site. One Admin server for internal users to add/edit/delete content and another Platform server to serve content to the public. I would like to setup AWS RDS Read Replicas and have the Platform serve ONLY use that Read Replica database. Thus being able scaling the Platform instances and read replica databases as large as the entire Platform needs. My only problem currently is to setup the Drupal 8 database configurations to only read from the database. Is that possible and if so how?

Good Morning,

I'm french and excuse my english , and in France it's sunday morning at 07:02 ...

I have installed drupal 8 with bitnami on my ubuntu 18.04 computer. I make some mistakes during the installation. I think i have remove bitnami but drupal stay in my computer on folder /opt/lampp/htdocs. During the installation i have not waiting for completely configuring the database , i interupted the installation. Now when I'm going to localhost/drupal8 page in my brother , the page ask me to login and my login and password don't work.

I installed files for Drupal 8.6.1 via Composer on my local machine (Windows 7, Wampstack-7.1.18-1, Apache 2). And then to proceed with installation and tweak the Drupal site, I can't reach the page in browser by link http://localhost/~/drupal/. It displays an error:

403 Forbidden: You don't have permission to access /drupal on this server

Meanwhile, I can reach any other projects on the localhost, which aren't developed with Drupal. All properties for Drupal folder are on maximum.

Hi,

I am having the following issue:

When I create my multisite, I have one database and I want to share some tables like users, sessions, etc. For some reason, the shared tables are only created for the shared_ prefix, and my second_site, but not mydefaultsite. But I want those table to be created for each site as well.

Another problem that I am facing is that even if I have the shared_users and secondsite_users, when I create an user in my default site, it does not appear for my seconsdite. And I need to share users.

Fresh clean install of 8.6.1 when I go into site information i get this error(turned error checking and messages on):