Hi gents,
I have a CentOS 6.6 install with net-snmp running. I'm using SNMPv3 Auth
and Encryption with Observium polling devices every five minutes. On one
of my Centos server, the net-snmp process will die after 24-36 hours of
running. It seems to be hitting my system maximum file open limit which
is set to 1024.
[root@mail net-snmp-5.7]# ulimit -n
1024
That number will keep increasing till it trips the 1024 limit.
[root@mail ~]# lsof -p 26907 | wc -l
1071
[root@mail net-snmp-5.7]# lsof -p 26907
snmpd 26907 root 166r REG 0,3 0 4026532160
/proc/26907/net/sctp/snmp
snmpd 26907 root 167r REG 0,3 0 4026532160
/proc/26907/net/sctp/snmp
snmpd 26907 root 168r REG 0,3 0 4026532160
/proc/26907/net/sctp/snmp
snmpd 26907 root 169r REG 0,3 0 4026532160
/proc/26907/net/sctp/snmp
snmpd 26907 root 170r REG 0,3 0 4026532160
/proc/26907/net/sctp/snmp
snmpd 26907 root 171r REG 0,3 0 4026532160
/proc/26907/net/sctp/snmp
snmpd 26907 root 172r REG 0,3 0 4026532160
/proc/26907/net/sctp/snmp
snmpd 26907 root 173r REG 0,3 0 4026532160
/proc/26907/net/sctp/snmp
snmpd 26907 root 174r REG 0,3 0 4026532160
/proc/26907/net/sctp/snmp
snmpd 26907 root 175r REG 0,3 0 4026532160
/proc/26907/net/sctp/snmp
snmpd 26907 root 176r REG 0,3 0 4026532160
/proc/26907/net/sctp/snmp
snmpd 26907 root 177r REG 0,3 0 4026532160
/proc/26907/net/sctp/snmp
snmpd 26907 root 178r REG 0,3 0 4026532160
/proc/26907/net/sctp/snmp
snmpd 26907 root 179r REG 0,3 0 4026532160
/proc/26907/net/sctp/snmp
#tail /var/log/snmpd.log
cannot open /proc/net/dev ...
/proc/partitions: Too many open files
/proc/stat: Too many open files
/proc/partitions: Too many open files
/proc/stat: Too many open files
could not create socket
/proc/partitions: Too many open files
/proc/stat: Too many open files
cannot open /proc/net/dev ...
/proc/partitions: Too many open files
/proc/stat: Too many open files
/proc/partitions: Too many open files
/proc/stat: Too many open files
It seems that CentOS is frozen to net-snmp 5.5 and I'm don't really want
to use anything that I can't easily manage with "yum". The weird thing
is that I have another server with the same config/CentOS
version/Net-Snmp version and I have no issues with the snmp process on
that server. I could raise the open file limit but that just seems
unnecessary since I don't think that snmp is supposed to work that way.
Anything else I could try to troubleshoot the issue?
Thanks!
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