late last year I observed the same phantom reboot symptoms when monitoring a number of NetGear gigabit switches (I know that NetGear is not the best kit to use with Observium). The strange thing is that none of the devices had rebooted and they all reported long up-times when queried directly.

Recent Eventlog Entries

2012-11-10 02:45:54 ms-gb-05 System Device rebooted after 49 days, 17h 1m 57s

2012-11-10 02:45:05 ms-gb-02 System Device rebooted after 49 days, 17h 1m 49s

2012-11-10 02:45:03 ms-gb-01 System Device rebooted after 49 days, 17h 2m 25s

2012-11-10 02:40:59 ms-gb-06 System Device rebooted after 49 days, 17h 2m 42s

2012-11-10 02:40:52 ms-gb-04 System Device rebooted after 49 days, 16h 58m 14s

2012-11-10 02:40:09 ms-gb-03 System Device rebooted after 49 days, 17h 2m 26s

After the alerts arrived, I contacted the data centre and it was confirmed that there had been no loss of power or planned works that could have affected the network. There were no more false reboot events up until I stopped using Observium (pending the implementation of formal support for alerting).

Darren

On 29 March 2013 17:51, Stefano Lobrano <stefano.lobrano@staff.aruba.it> wrote:

Hello List,
I'm testing observium to monitor network devices in our datacenter, I've added a range of different devices and it seems all good, but today it has given me a false notice about a couple of nexus 5000 that are reported as "rebooted" while the switches are correctly reporting uptime of more than 600 days...
All the other hosts are reported without errors, apparently.

I've looked in the mailing list archive and I found similar issues, with server, but I understand that was something resolved.

Where does observium takes the info about reboot?

Observium is installed in a VM:
Observium 0.13.3.3824
Apache 2.2.22 (Ubuntu)
PHP 5.3.10-1ubuntu3.6
MySQL 5.5.29-0ubuntu0.12.04.2
RRDtool 1.4.7

Thanks,
Stefano
_______________________________________________
observium mailing list
observium@observium.org
http://postman.memetic.org/cgi-bin/mailman/listinfo/observium