Adam, I hear what you are saying about udp flooding…there are routers (no filters) in between but no firewalls. i don’t see any indication in the logs that there are udp flooding issues…also, why only every
couple of months? Why not every night?
From: Adam Armstrong <adama@observium.org>
Sent: Tuesday, August 22, 2023 12:14 PM
To: Observium <observium@lists.observium.org>; Tony Guadagno via observium <observium@lists.observium.org>
Cc: Observium Network Observation System <observium@observium.org>; Tony Guadagno <tonyg@guadagno.org>
Subject: Re: [Observium] my server freaks out sometimes!
This is likely a firewall or similar intervening device being unhappy at UDP volume and rate limiting.
It's likely that your discovery run starts at midnight, so increases SNMP UDP traffic.
adam.
Tony Guadagno via observium wrote on 22/08/2023 14:01:
· Hi, I am using the pro version Observium 23.8.12912 (stable)
I am having an issue where over the course of 2 hours (or so) all my devices go down and then up. It claims that it missed pings but there is no issue with any of the devices. This has happened to me 2 times in the past 3 months, both times starting at midnight.
When I look in the event log, I am seeing some odd things on that date:
First, notice that there are a bunch of snmp timeouts which do not occur on any other day. Also, it seems that all the devices have changes…again this does not happen on any other night.
After the first incident I increased the RAM on the server thinking that it was constrained, but the poller info does not look bad:
I would appreciate help in determining what to look at for the cause of this.
Thanks
Tony Guadagno
O +1 585 577 1003
C +1 585 703 6700
E tonyg@guadagnoconsulting.com
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