Hi all,
Recently, my LibreNMS Eventlog is showing errors:
discovery asw0-b2 Error discovering fdb-table module. Check log file for more details.
But there are no relevant logs:
root@librenms:~# grep -rl fdb-table /var/log/
root@librenms:~#
maintenance The scheduled command maintenance:cleanup-syslog failed to run. Check the maintenance.log for details.
Also, no relevant logs, and it works manually, well, at least no error, but nothing cleaned:
librenms@librenms:\~$ php artisan maintenance:cleanup-syslog
Cleared syslog entries older than 30 days (0 rows)
2026-01-12 03:48:00 maintenance The scheduled command maintenance:fetch-rss failed to run. Check the maintenance.log for details.
Also, cannot find any logs, and it works manually:
librenms@librenms:~$ php artisan maintenance:fetch-rss
[ Wed, 14 Jan 2026 14:27:29 +0000 ] LibreNMS https://www.librenms.org/notifications.rss (48)
[ Wed, 14 Jan 2026 14:27:29 +0000 ] local misc/notifications.rss (53)
[ Wed, 14 Jan 2026 14:27:29 +0000 ] Updating DB Done
Here are maintenance logs:
librenms@librenms:~$ cat logs/maintenance.log
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
[ Wed, 14 Jan 2026 03:48:00 +0000 ] LibreNMS https://www.librenms.org/notifications.rss (48)
[ Wed, 14 Jan 2026 03:48:01 +0000 ] local misc/notifications.rss (53)
[ Wed, 14 Jan 2026 03:48:01 +0000 ] Updating DB Done
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
librenms@librenms:~$
librenms@librenms:~$
librenms@librenms:~$ cat logs/maintenance.log
maintenance.log maintenance.log.1 maintenance.log.2.gz maintenance.log.3.gz maintenance.log.4.gz maintenance.log.5.gz maintenance.log.6.gz
librenms@librenms:~$ cat logs/maintenance.log.1
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
[ Tue, 13 Jan 2026 03:48:00 +0000 ] LibreNMS https://www.librenms.org/notifications.rss (48)
[ Tue, 13 Jan 2026 03:48:00 +0000 ] local misc/notifications.rss (53)
[ Tue, 13 Jan 2026 03:48:00 +0000 ] Updating DB Done
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Cleared syslog entries older than 30 days (0 rows)
Here is ./validate.php
librenms@librenms:~$ ./validate.php
===========================================
Component | Version
--------- | -------
LibreNMS | 26.2.0-dev.6+bf2f15234 (2026-01-13T03:27:41+00:00)
DB Schema | 2025_12_05_205509_devices_add_mtu_status (362)
PHP | 8.4.10
Python | 3.10.12
Database | MariaDB 10.6.22-MariaDB-0ubuntu0.22.04.1
RRDTool | 1.7.2
SNMP | 5.9.1
===========================================
[OK] Composer Version: 2.9.3
[OK] Dependencies up-to-date.
[OK] Database Connected
[OK] Database Schema is current
[OK] SQL Server meets minimum requirements
[OK] lower_case_table_names is enabled
[OK] MySQL engine is optimal
[OK] Database and column collations are correct
[OK] Database schema correct
[OK] MySQL and PHP time match
[OK] Active pollers found
[OK] Dispatcher Service not detected
[OK] Locks are functional
[OK] Python poller wrapper is polling
[OK] Redis is unavailable
[OK] rrd_dir is writable
[OK] rrdtool version ok
Can anyone point me in the right direction?
Thanks,
C