You can edit configuration of LibreNMS by placing *.php
files inside /data/config
folder. Let's say you want to edit the WebUI config. Create a file called for example /data/config/webui.php
with this content :
<?php
$config['page_refresh'] = "300";
$config['webui']['default_dashboard_id'] = 0;
This configuration will be included in LibreNMS and will override the default values.