What I am trying to do here is monitor the change in load and disk usage so that the agent will send a trap when a server goes over a certain threshold. At the moment I’m only getting traps when I restart/reload the snmp agent. If anyone has an example config file that uses the Disman extensions (i.e. monitor, etc ... ) please send me some examples.
Also, I have yet to find decent examples or documentation on Net-SNMP that is complete and concise, could someone point me to a site that could explain a little better than the Net-SNMP site? Please help if at all possible. What I have come up with so far is from what I have
found from either the net-snmp site or bits and pieces scattered around the internet.
Thanks in advance for your help!
This is my snmpd.conf file (net-snmp 5.4.1)
Code:
###########################################################################
#
# snmpd.conf
#
# - created by the snmpconf configuration program
#
###########################################################################
# SECTION: System Information Setup
#
# This section defines some of the information reported in
# the "system" mib group in the mibII tree.
# syslocation: The [typically physical] location of the system.
# Note that setting this value here means that when trying to
# perform an snmp SET operation to the sysLocation.0 variable will make
# the agent return the "notWritable" error code. IE, including
# this token in the snmpd.conf file will disable write access to
# the variable.
# arguments: location_string
syslocation "Removed for privacy"
# syscontact: The contact information for the administrator
# Note that setting this value here means that when trying to
# perform an snmp SET operation to the sysContact.0 variable will make
# the agent return the "notWritable" error code. IE, including
# this token in the snmpd.conf file will disable write access to
# the variable.
# arguments: contact_string
syscontact "Removed for privacy"
###########################################################################
# SECTION: Agent Operating Mode
#
# This section defines how the agent will operate when it
# is running.
# master: Should the agent operate as a master agent or not.
# Currently, the only supported master agent type for this token
# is "agentx".
#
# arguments: (on|yes|agentx|all|off|no)
# master agentx
# Setup the credentials to retrieve monitored values
createUser internal
iquerySecName internal
rouser internal noauth
# Activate the standard monitoring entries
defaultMonitors yes
# If ssCpuSystem goes over 5, send trap
monitor -I -u internal -r 60 "High CPU Usage" 1.3.6.1.4.1.2021.11.10 > 5
# If dskErrorFlag is 1, as in disk getting full, send trap
monitor -I -u internal -r 60 "Disk almost full" 1.3.6.1.4.1.2021.9.1.100 == 1
# authtrapenable: Should we send traps when authentication failures occur
# arguments: 1 | 2 (1 = yes, 2 = no)
authtrapenable 1
###########################################################################
# SECTION: Monitor Various Aspects of the Running Host
#
# The following check up on various aspects of a host.
# proc: Check for processes that should be running.
# proc NAME [MAX=0] [MIN=0]
#
# NAME: the name of the process to check for. It must match
# exactly (ie, http will not find httpd processes).
# MAX: the maximum number allowed to be running. Defaults to 0.
# MIN: the minimum number to be running. Defaults to 0.
#
# The results are reported in the prTable section of the UCD-SNMP-MIB tree
# Special Case: When the min and max numbers are both 0, it assumes
# you want a max of infinity and a min of 1.
proc ntpd 1 1
proc snmpd 1 1
# disk: Check for disk space usage of a partition.
# The agent can check the amount of available disk space, and make
# sure it is above a set limit.
#
# disk PATH [MIN=100000]
#
# PATH: mount path to the disk in question.
# MIN: Disks with space below this value will have the Mib's errorFlag set.
# Can be a raw byte value or a percentage followed by the %
# symbol. Default value = 100000.
#
# The results are reported in the dskTable section of the UCD-SNMP-MIB tree
disk / 20%
# load: Check for unreasonable load average values.
# Watch the load average levels on the machine.
#
# load [1MAX=12.0] [5MAX=12.0] [15MAX=12.0]
#
# 1MAX: If the 1 minute load average is above this limit at query
# time, the errorFlag will be set.
# 5MAX: Similar, but for 5 min average.
# 15MAX: Similar, but for 15 min average.
#
# The results are reported in the laTable section of the UCD-SNMP-MIB tree
load 5 5 5
###########################################################################
# SECTION: Access Control Setup
#
# This section defines who is allowed to talk to your running
# snmp agent.
# rocommunity: a SNMPv1/SNMPv2c read-only access community name
# arguments: community [default|hostname|network/bits] [oid]
rocommunity "Removed for privacy"
###########################################################################
# SECTION: Trap Destinations
#
# Here we define who the agent will send traps to.
# trap2sink: A SNMPv2c trap receiver
# arguments: host [community] [portnum]
trap2sink "Removed for privacy"