With the Drupal source code in the document root and the databases created in MySQL, we are ready to install our first site. There are two parts to installing Drupal. The first is done through the operating system, and involves creating a few directories and a file.
If you are manually installing, you will need to copy the settings file and then create a files directory with the correct permissions.
If you are using the Vagrant installation discussed in the last chapter then you do not need to do either of these things. Vagrant does them for you.
Drupal stores most of its data inside of the database. But some things can (or must) be stored in a file on the filesystem. For example, information about connecting to the database must be stored in a file.
Here is where things get interesting for a multi-site installation. Each of our sites will share the same copy of Drupal. But they will not share the same database. Each will have its own...