How to re-run the installation wizard?

Hello

the VM comes with the installation already done, if you want to be able to tune more thing, or have a vm with custom size, disk etc, I found that using the unattended script is often the way to go.
the VM may be fine to use for a small setup, whitout any paid products (BI, BAM, MAP), but you can always tune the hardware of the vm (more cpu/ram/disk)

with the script you can setup you OS (or use public cloud image if you want), then follow thisUnattended installation of a central server | Centreon Documentation
the script run on all the supported OS 

if you want even more control, like separating database from central, then you must use the package installation

always be sure to follow the prerequisites before installing with the script or manually with packages
Prerequisites | Centreon Documentation

Thanks for the clarification. I misread the navigation on the left side to mean that https://docs.centreon.com/docs/installation/web-and-post-installation/ is the expected next step.
 

And it made kind of sense, because it mentions the license, and db connection setup etc. Which I didn’t do yet. Which explains the CRITICAL one of the out-of-the box servcices throws:
 

Access denied for user 'centreon-engine'@'localhost'

/usr/lib/centreon/plugins//centreon_mysql.pl
plugin=database::mysql::plugin
host=localhost
username=''
password='***'

I can try and guess a password for root/centreon/mysql, but what’s the expected way to set this up?

Hello,

Did you try this?

yum reinstall -y centreon-web
rm -fr /usr/share/centreon/www/install

The install wizard should reappear.

You should set the database pass as stated:

https://docs.centreon.com/docs/installation/installation-of-a-central-server/using-virtual-machines/#default-credentials

So I stopped all centreon services, reinstalled centreon-web, wiped the install directory and rebooted.
No cookie.
Directly end up in standard UI with broken sql connection.

Please send the screenshot of the error.