I followed the exact steps at Fast Ping Checking - LibreNMS Docs and now devices are constantly changing between down and up. Every 5 minutes, the device status changes to up, then 15 seconds later changes to down.
Relevant config settings:
$config['ping_rrd_step']=30;
$config['fping_options']['retries']=5;
$config['fping_options']['timeout']=1000;
$config['fping_options']['count']=5;
$config['fping_options']['millisec']=500;
$config['fping_options']['interval']=500;
./validate.php:
Component | Version
--------- | -------
LibreNMS | 1.62.1
DB Schema | 2020_03_24_0844_add_primary_key_to_device_graphs (160)
PHP | 7.2.19-0ubuntu0.18.04.2
MySQL | 10.1.41-MariaDB-0ubuntu0.18.04.1
RRDTool | 1.7.0
SNMP | NET-SNMP 5.7.3
====================================
[OK] Composer Version: 1.10.1
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database schema correct
/etc/cron.d/librenms:
SHELL=/bin/bash
PATH=/opt/librenms:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
33 */6 * * * librenms /opt/librenms/cronic /opt/librenms/discovery-wrapper.py 1
*/5 * * * * librenms /opt/librenms/discovery.php -h new >> /dev/null 2>&1
*/5 * * * * librenms /opt/librenms/cronic /opt/librenms/poller-wrapper.py 4
*/5 * * * * librenms /opt/librenms/poll-billing.php >> /dev/null 2>&1
01 * * * * librenms /opt/librenms/billing-calculate.php >> /dev/null 2>&1
*/5 * * * * librenms /opt/librenms/check-services.php >> /dev/null 2>&1
* * * * * librenms /opt/librenms/ping.php >> /dev/null 2>&1
* * * * * librenms sleep 30 && /opt/librenms/ping.php >> /dev/null 2>&1
* * * * * librenms sleep 15 && /opt/librenms/alerts.php >> /dev/null 2>&1
* * * * * librenms sleep 45 && /opt/librenms/alerts.php >> /dev/null 2>&1
# Daily maintenance script. DO NOT DISABLE!
# If you want to modify updates:
# Switch to monthly stable release: https://docs.librenms.org/General/Releases/
# Disable updates: https://docs.librenms.org/General/Updating/
15 0 * * * librenms /opt/librenms/daily.sh >> /dev/null 2>&1
*/5 * * * * librenms /opt/librenms/html/plugins/Weathermap/map-poller.php >> /dev/null 2>&1
What am I missing here?