Thanks for the response 
I added these lines to the config.php :
$config[‘snmp’][‘community’][] = “public”;
$config[‘nets’][] = ‘192.168.2.0/24’;
$config[‘nets’][] = ‘103.92.104.0/24’;
$config[‘nets’][] = ‘182.253.221.106/32’;
$config[‘discovery_by_ip’] = true;
$config[‘discovery_modules’][‘discovery-arp’] = 1;
$config[‘discovery_modules’][‘ipv4-addresses’] = 1;
$config[‘discovery_modules’][‘ipv6-addresses’] = 1;
$config[‘discovery_modules’][‘ports’] = 1;
$config[‘discovery_modules’][‘services’] = 1;
$config[‘allow_duplicate_sysName’] = true;
I already configured snmp on some device, i waited 24 hours but there is still no device added. Then i tried to run ./snmp-scan.py and all devices added!
./validate.php says discovery.php hasn’t run in 24 hours. Here’s my cron.d/librenms :
33 */6 * * * librenms /opt/librenms/discovery.php -h all >> /dev/null 2>&1
33 */6 * * * librenms /opt/librenms/discovery-wrapper.py 1 >> /dev/null 2>&1
*/5 * * * * librenms /opt/librenms/discovery.php -h new >> /dev/null 2>&1
*/5 * * * * librenms /opt/librenms/poller-wrapper.py 24 >> /opt/librenms/logs/wrapper.log
15 0 * * * librenms /opt/librenms/daily.sh >> /dev/null 2>&1
** *** librenms /opt/librenms/alerts.php >> /dev/null 2>&1
What did i miss??
thanks, appreciated 