Installing Drupal

Hello everybody,
I finished the install and I have some errors on the dkan_sitewide.module

Notice: Undefined index: dkan in dkan_sitewide_update_status_alter() (line 201 of /var/www/html/dkan/profiles/dkan/modules/dkan/dkan_sitewide/dkan_sitewide.module).

Notice: Undefined index: existing_major in dkan_sitewide_update_status_alter() (line 216 of /var/www/html/dkan/profiles/dkan/modules/dkan/dkan_sitewide/dkan_sitewide.module).

Hi All,
What is best practice for installing Apache , PHP & MySQL? Can we use root user to install them?
Or it is preferred to be install with other user?

Dear All

I have a new multisite install of Drupal which works perfectly with new websites. My aim is to move about 10 sites which are currently configured for a single install over to this new system, I am, however, having a problem with converting the single install's database to work with a multisite system. I'm running the following SQL within the MySQL command line tool but I receive an error telling me that. Table 'sites__db.FILES' doesn't exist.

I am setting up Drupal 8.2.6 with postgres and the drupal installer fails with this error. I dont run into this issue when using MySQL though. Can someone help what might cause this to fail for Postgres + Drupal case.

Error:
The website encountered an unexpected error. Please try again later.
Drupal\Component\Plugin\Exception\PluginNotFoundException: The "field_storage_config" entity type does not exist. in Drupal\Core\Entity\EntityTypeManager->getDefinition() (line 133 of core\lib\Drupal\Core\Entity\EntityTypeManager.php).

Is it possible to use one (same) Drupal core for multiple distributions in a domain hosting account then place each's distribution's profile files inside of core's 'profile' folder, instead of installing each's full distributions? For example, installing Open Atrium, Drupal Commerce, and others.

The alternative, I would assume, is installing each full distribution into their own sub-directory in the domain account, correct?

Thanks!

I'm attempting to (re)install drupal 8.2.6 on Ubuntu Server 16.04.2 LAMP.

On the Drupal requirements review page I'm getting a warning:

Clean URLs Disabled.

Which is strange because I didn't have this problem with my previous installation on same server.

Anyway, I followed the link and essentially went on a wild goose chase of vague unclear documentation trying various suggestions with no success so far.

How can configure the system to remove the Clean URLs Disabled warning?