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106 lines
4.1 KiB
Text
106 lines
4.1 KiB
Text
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Here's the sort of thing you might do to set up SNMP support on your
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system, assuming that you have net-snmp installed in the normal
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locations for something like RedHat Linux.
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0. Edit the example GNUSTEP-MIB.txt to contain your own organisation's
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Private Enterprise Number. This stage is optional, you may use the
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MIB 'as-is' with the GNUstep PEN if you wish. You only need to use
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an edited version if your organisation wishes to use its own MIB
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with additional features not in the GNUstep one.
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If you are using your own MIB, replace all ocurrances below of
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GNUSTEP-MIB.txt with the name of your own MIB file.
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1. install GNUSTEP-MIB.txt in /usr/share/snmp/mibs or wherever net-snmp
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keeps its MIBs on your system. This manual installation is required
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for a system-wide installation, but if you only want to have access
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to the MIB yourself, the default installation process will have put
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the MIB in your local directory(~/.snmp/mibs) which is correct for
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net-snmp on most systems.
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2. For diagnosing problems in snmpd (revert when not debugging),
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edit '/etc/sysconfig/snmpd' to contain:
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OPTIONS="-Dgnustep -Lf /var/log/snmpd"
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so that any debug for the gnustep MIB would be logged
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in /var/log/snmpd
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or use '-Dgnustep -LS0-6d' for logging via syslog.
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3. For diagnosing problems in snmptrapd (revert when not debugging),
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edit '/etc/sysconfig/snmptrapd' to contain:
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OPTIONS="-Dgnustep -Lf /var/log/snmptrapd"
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so that any debug for the gnustep MIB would be logged
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in /var/log/snmptrapd
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or use '-Dgnustep -LS0-6d' for logging via syslog.
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4. edit /etc/snmp/snmpd.conf to get it to send traps to snmptrapd ...
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rwcommunity public
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trap2sink localhost public
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and to accept agentx connections via tcp ...
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agentxsocket tcp:localhost:705
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master agentx
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having the snmp daemon listening on port 705 for agentx connections is
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essential for the default setup of alarming, but you can use a different
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host and port if you wish (see the EcAlarmSinkSNMP initialisation for
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details).
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NB. Your system may be configured to disallow access via 'public', in
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which case the line
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rwcommunity public
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will not be sufficient to grant access to the alarm tables and you will
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need to either configure appropriate snmp access control settings for
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your system, or completely replace the file (but that would give
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unrestricted access, and therefore be a security problem ... so you
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should only do it for temporary testing of an isolated system).
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5. restart with '/sbin/service snmpd restart'
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If you are starting snmp for the first time on a RedHat system then:
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# /sbin/chkconfig snmpd on
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# /sbin/service snmpd start
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should enable the snmp service and then start it.
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6. For diagnostics and control of the net-snmp copmponent, you can use a
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gnustep.conf file in any of the standard locations read by netsnmp.
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Typically ~/.snmp/gnustep.conf (where ~ is the home directory of the
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account running the Control server).
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The contents of the file to enable debug logging would typically be
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[snmp]
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doDebugging 1
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debugTokens gnustep
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7. build/install/run the Control server
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8. test with snmpwalk ...
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To look at EVERYTHING:
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snmpwalk -v 1 -c public localhost GNUSTEP-MIB::gnustep
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To look at the current alarms table:
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snmpwalk -v 1 -c public localhost GNUSTEP-MIB::gnustep.alarms.alarmsTable
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To look at the current alarms table in a tabular format (rows of columns) which will be far too wide to view in a normal terminal window:
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snmptable -v 1 -c public localhost GNUSTEP-MIB::gnustep.alarms.alarmsTable
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To look at the managed objects table:
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snmpwalk -v 1 -c public localhost GNUSTEP-MIB::gnustep.objects
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You should be able to get the heartbeat poll interval with:
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snmpget -v 1 -c public localhost GNUSTEP-MIB::pollHeartBeat.0
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You should be able to set the heartbeat poll interval to two minutes with
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snmpset -v 1 -c public localhost GNUSTEP-MIB::pollHeartBeat.0 i 2
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You should be able to set the resync flag interval with
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snmpset -v 1 -c public localhost GNUSTEP-MIB::resyncFlag.0 i 1
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and set it back to normal with
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snmpset -v 1 -c public localhost GNUSTEP-MIB::resyncFlag.0 i 0
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