HP ProLiant DL360 G7 running CentOS6 5.7 with Net-SNMP 188.8.131.52-14.
I have 7 of these servers in a remote site all running mixture of CentOS 5.7 and RHEL 5.7 with same Net-SNMP installed from RPM. On one server my NMS continuously reports that it has failed to connect to the SNMP service. I ignored it because it usually clears up within ~15 minutes but today it has been happening 2-3 times per hour since the morning.
I have modified the snmpd startup script to log to file (default is to /dev/null). There are no errors in the log file upon startup:
could not open /proc/net/if_inet6 cannot open /proc/net/snmp6 ... cmaX: listening for subagents on port 25375 cmaX: sent ColdStarts on ports 25376 to 25393 cmaX: subMIB 1 handler has disconnected NET-SNMP version 184.108.40.206 cmaX: subMIB 2 handler has disconnected Connection from UDP: [127.0.0.1]:50654 cmaX: subMIB 3 handler has disconnected Received SNMP packet(s) from UDP: [127.0.0.1]:50654 cmaX: subMIB 5 handler has disconnected
I presume if_inet6 is for IPv6 which we do not use. snmpd.conf is below:
# Following entries were added by HP Insight Management Agents at # Tue May 15 10:58:17 CLT 2012 dlmod cmaX /usr/lib64/libcmaX64.so rwcommunity public 127.0.0.1 rocommunity public 127.0.0.1 rwcommunity 3adRabRu 172.16.37.37 rocommunity 3adRabRu 172.16.37.37 trapcommunity traps trapsink 172.16.37.37 traps syscontact Lukasz syslocation Santiago, Chile # ---------------------- END -------------------- com2sec rwlocal default public com2sec rolocal default public com2sec subnet default 3adRabRu group rwv2c v2c rwlocal group rov2c v2c rolocal group rov2c v2c subnet view all included .1 access rwv2c "" any noauth exact all all none access rov2c "" any noauth exact all none none
Any suggestions? IP Tables is shutoff.