Wednesday, February 11, 2009

CentOS SNMP

The standard installs I do for CentOS don't come with SNMP installed. I used the GUI to get the SNMP then do the following commands:
Rename the default configuration file
mv /etc/snmp/snmpd.conf /etc/snmp/snmpd.bak

Create new file with your own SNMP configuration
vi /etc/snmp/snmpd.conf

Paste the following information into the terminal window
###########################################################################
#
# 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 SAVVIS
# 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 Arthur Gressick
###########################################################################
# 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 public
###########################################################################
# SECTION: Agent Operating Mode
#
# This section defines how the agent will operate when it
# is running.
# agentaddress: The IP address and port number that the agent will listen on.
# By default the agent listens to any and all traffic from any
# interface on the default SNMP port (161). This allows you to
# specify which address, interface, transport type and port(s) that you
# want the agent to listen on. Multiple definitions of this token
# are concatenated together (using ‘:’s).
# arguments: [transport:]port[@interface/address],…

agentaddress 10.10.x.x:161
Then reload the SNMP service from the gui and if you have cacti monitoring your OS try and connect.

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