11-03-2011
SNMP responses failing under high system load
Greetings,
I've got a Zenoss v2.5 server monitoring a large video encoding farm. Needless to say, these systems are under high bandwidth and CPU utilization the majority of the time.
What I'm running into is that, occasionally, these systems will fail to respond to a standard SNMP request, thereby throwing "SNMP agent down" errors in Zenoss, and generating lots of otherwise unnecessary alerts. Then, the next time the system is polled, it works, and a clear message is also sent (generating even more alerts).
Short of nice-ing the snmpd process down so that it doesn't get completely blocked by the video encoding, what would be the best way to handle this, either via configuring Zenoss, SNMP, or the servers themselves? I don't see an obvious solution to this puzzle..
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LEARN ABOUT ULTRIX
snmpsetup
snmpsetup(8n) snmpsetup(8n)
Name
snmpsetup - set up the Simple Network Management Protocol (SNMP) Agent
Syntax
/usr/etc/snmpsetup
Description
The command is an interactive facility for configuring the ULTRIX SNMP Agent. When your system is configured as an SNMP Agent certain net-
work parameters can be monitored or managed by a Network Management Station (NMS).
The command also allows you to configure Extended ULTRIX SNMP Agents. Extended Agents are user-defined daemons that allow you to specify
private network parameters to be monitored or managed by the NMS.
Before you invoke the network must be up and running, your host must have a name, and you must know the Internet Protocol address of any
NMSs that you want to have monitor or manage your system.
You can run while in multiuser mode, but you must be root or superuser.
To invoke
# snmpsetup
Diagnostics
The following error messages are issued by
snmpsetup must be run by root
snmpsetup: need /etc/rc
snmpsetup: need /etc/snmpd.conf
snmpsetup: non-interactive mode not currently supported
snmpsetup: network must be setup before running snmpsetup
snmpsetup: terminated with no installations made
Files
SNMP configuration file
File that controls automatic reboot
See Also
snmpext(3n), snmpd.conf(5n), snmpd(8n)
Guide to Networking
snmpsetup(8n)