I think you are hitting https://bugs.launchpad.net/horizon/+bug/1853651.
The bug says WEBROOT needs to be configured.
It was reported against the horizon installation guide on RHEL/CentOS,
but I believe it is a bug on CentOS packaging as a package should work
with the default config provided by the package.


On Sun, Mar 8, 2020 at 2:45 AM Rahul Sharma <rsharma1818@outlook.com> wrote:
>
> Hi,
>
> Tried with /dashboard but it ain't working
>
> Getting error "The requested URL /auth/login/ was not found on this server." in the browser (Error 404)
>
>
> ________________________________
> From: Donny Davis <donny@fortnebula.com>
> Sent: Saturday, March 7, 2020 8:45 PM
> To: Rahul Sharma <rsharma1818@outlook.com>
> Cc: OpenStack Discuss <openstack-discuss@lists.openstack.org>
> Subject: Re: [Horizon] Unable to access the dashboard page
>
> Try /dashboard
>
> Donny Davis
> c: 805 814 6800
>
> On Sat, Mar 7, 2020, 8:33 AM Rahul Sharma <rsharma1818@outlook.com> wrote:
>
> Hi,
>
> I am trying to get OpenStack (Train) up and running on CentOS 7 by following the "OpenStack Installation Guide" provided on OpenStack's website and have completed installation of below components
>
>
>  - Keystone
>  - Glance
>  - Placement
>  - Nova
>  - Networking
>
>
> After installing each component, I have also verified its operation and it seems to be working successfully.
>
> However, there is a problem I am facing after installing "Horizon" for dashboard services. In order to verify its operation, one is supposed to browse to the URL "http://controller/horizon/" where "controller" could be the hostname or IP address of the Node which is running the controller
>
> Browsing to the above URL throws an error "The requested URL /horizon was not found on this server."
>
> In the apache access logs, I see below error:
>
> "
> 103.44.50.92 - - [07/Mar/2020:13:14:52 +0000] "GET /horizon/ HTTP/1.1" 404 206 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36"
> 103.44.50.92 - - [07/Mar/2020:13:14:52 +0000] "GET /favicon.ico HTTP/1.1" 404 209 "http://3.21.90.63/horizon/" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36"
> "
>
> If I browse to the URL "http://controller/", the default "Testing123" page of apache gets loaded.
>
>
> Please assist.
>
> Thanks,
> Rahul