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Description of problem: After updating to net-snmp-5.1.2-20.el4.i386, Nagios frequently complained (4-10 times per day) that my system was unreachable and Cacti graphs showed a lot of gaps. Nagios and Cacti reporting returned to normal after downgrading to net-snmp-5.1.2-20.el4.i386 Version-Release number of selected component (if applicable): net-snmp-5.1.2-20.el4.i386 How reproducible: This is an intermittent problem after upgrading to net-snmp-5.1.2-20.el4.i386. Steps to Reproduce: 1. Upgrade to net-snmp-5.1.2-20.el4.i386. 2. Attempt to monitor the system using Nagios or Cacti. 3. Actual results: Nagios 2.12 will occasionally report that the system is in an "unknown" state. Cacti graphs will show gaps where no response was received from snmpd. Expected results: No complaints from Nagios; no gaps in Cacti graphs. Additional info: kernel-2.6.9-100.EL.i686 cpuinfo - Intel(R) Pentium(R) III CPU family 1133MHz lspci - Ethernet controller: Intel Corporation 82557/8/9/0/1 Ethernet Pro 100 (rev 0d) NIC driver - e100 SELinux status - enabled, permissive The load on this system as reported by uptime (and Cacti) is normally less than 0.2; it might exceed 1 briefly once or twice daily, like during backups.
Created attachment 481020 [details] Cacti graph: memory utilization The latest packages, net-snmp-5.1.2-20.el4.i386 and net-snmp-libs-5.1.2-20.el4.i386, were in place from 18-23 February. The downgraded packages have been in place since 23 February and you can see a considerable improvement.
Created attachment 481023 [details] Cacti graph: eth0 traffic This graph shows that network traffic was very light. The peaks were caused by backups. The load average graph is also light during the same period.
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