Re: [opennms-discuss] Detect Reboots

[Jeff G. <je...@op...>]

On May 30, 2008, at 4:29 AM, Lars Rohdin wrote:
> We are using the nodeDown at the moment, but we have a 10 min delay  
> on mobilephoneSMS notifications, which mean that if the machine  
> reboots within 10 minutes. No sms is sent.

Perhaps you should consider creating and using a separate destination  
path, with a shorter or non-existent initialDelay, for notifications  
that you always want to hear about?

Anyway, a nodeDown does not necessarily signal that a system is  
actually down, only that all its interfaces have become unreachable  
from the perspective of OpenNMS.

> We were looking at the linkUp trap, but when I tried it on a  
> linuxmachine, it did not send any linkUp at reboot.

That's because a linkUp trap describes an *interface* changing from a  
down to an up state, not a system starting up.  Although a reboot does  
involve interfaces coming up, this happens by necessity well before  
the SNMP agent is running.

Karl's suggestion of using coldStart traps is a good one, even if  
imperfect.  You may need to configure your SNMP agents to send  
coldStart traps, though.

-jeff