Installing Drupal

when i install drupal 8.2.4 anytime and any click it appears error

Not Found

The requested URL /admin/structure was not found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

PLEASE HELP....

cPanel
Apache v 2.4.23
PHP 7.0.1

Hi,

I am installing drupal on postgresql ( as I did a hundred times before on drupl 8.1 and postgresql 9.4 and 9.5)

When the install script runs ( using interactive installation trough web page or drush or drupal console )

I see many errors in the postgresql log :

Hi,

I am attempting to determine if the following is a possibility:

In a multiple web server (load balanced) environment I would like to configure the Drupal database with two sets of credentials:

One that would include the full "owner" database permissions outlined in the INSTALL document:

CREATE USER username@localhost IDENTIFIED BY 'password';

I am facing an issue when there is a proxy subdirectory point to Drupal 7 site.

For e.g. The site is http://www.mysite.com/training and www.mysite.com is main site which is running on the different server. /training is virtual/proxy subdirectory which mapped to different server where Drupal 7 site is hosted.

I have set the $base_url = '/training' and update the .htaccess file with the below rules in Drupal 7 Training Portal Site.

OK, I'm a bit confused; I'll apologize if necessary, as this isnt necessarily a DRUPAL Installation question, but it is Drupal related, and IS an Installation question, so...

I'm attempting to install Drush. As I've looked at Google, I'm seeing some places that tell me to Install Composer, and then use Composer to install Drush; while other places are saying to install Drush first, and then use Drush to install Composer... OR Does it matter which is first?

Error -- Cannot serve directory -- using composer "drupal-project", did i mess scaffolding up, or something more basic?

Can someone point me in right direction for use of Composer creating a multi-site configuration? I'm using the composer project : "drupal-composer/drupal-project".

I'm not sure if I've messed up the scaffolding setup or overlooked something else more trivial. Have spent 8-10 hours googling similar threads and trying to figure it out without success. Can someone point me in right direction?