HP ProLiant DL360 G7 running CentOS6 5.7 with Net-SNMP 5.3.2.2-14.
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 5.3.2.2
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.