SNMP is a wonderful tool but the moment you switch it on a Linux server you might find countless messages in your log file such as the following:
tail -f /var/log/messages
Oct 21 11:18:52 server snmpd: Connection from UDP: [a.b.c.d]:58212->[w.x.y.z]:161 Oct 21 11:18:56 server snmpd: Connection from UDP: [a.b.c.d]:65111->[w.x.y.z]:161 Oct 21 11:18:56 server snmpd: Connection from UDP: [a.b.c.d]:65112->[w.x.y.z]:161
Although these messages are completely harmless you probably want to suppress them so that you can focus on more important information in the logs.
How to reduce SNMP logging on a Linux Server
There are various remedies for turning off SNMP logging, some more complex than others. The one we found that works best is to add `dontLogTCPWrappersConnects yes` to your SNMPD configuration.
Then restart snmp with
service snmpd restart
For more remedies, see the reference below:
2 thoughts on “How to reduce SNMP logging on a Linux server”
Thank you very much for posting the information.
I have one query about SNMP logging. Every time i make an SNMP query i see my SSH session Screen flooding with the
Connection from UDP: [172.XX.XX.XX]:44313->[172.XX.XX.XY]:161
Is there any way we can disable or hide them from SSH screen? Maybe can we keep capturing logs in the background?
Thanks in advance.
Hi there @shashikant
Try adding `dontLogTCPWrappersConnects yes` to your snmpd.conf file, and then restart snmpd.