Help with SNMP traps?

[jbennett]

I have been trying to get SNMPtraps working for some time now.

I finally have a secondary box that I can use to send test traps (original Nagios box) to my new Nagios box with.

I have verified that I have net-snmp-utils installed on both boxes. On the old Nagios box I verified the UCD-TRAP-TEST-MIB.txt file in the /usr/share/snmp/mibs.

When I tried to restart SNMPTT on that box, I see the following message:

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[root@nagiosxivm ~]# service snmptt restart
Stopping snmptt:                                           [  OK  ]
Starting snmptt: PID file: /var/run/snmptt.pid
Could not open configuration file: /usr/share/snmp/mibs/processed_mibs/.txt (No such file or directory) at /usr/local/sbin/snmptt line 2733.
                                                           [  OK  ]

Line 2733 and surrounding of /usr/local/sbin/snmptt:

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 unless (open SNMPTTCONF, $snmpttconffile)
    {
      warn "Could not open configuration file: $snmpttconffile ($!)";
      if ($DEBUGGING >= 1)
      {
        print "\n\tCould not open configuration file: $snmpttconffile\n";
      }

When I try and send a trap from the old nagios box to the new nagios box in order to test:

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[root@nagiosxivm ~]# snmptrap -v 1 -c roadway 10.250.2.55 UCD-TRAP-TEST-MIB::demotraps \ "" 6 17 "" SNMPv2-MIB::syslocation.0 s "Here"

I get the help page for snmptrap. I'm guessing that the syntax is wrong for the above?

[scottwilkerson]

Did you install this with the RPM in this document?
http://library.nagios.com/library/produ ... -nagios-xi

Can you run

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cat /etc/snmp/snmptt.ini|tail

Also, is UCD-TRAP-TEST-MIB installed on the server you are sending the trap from?

Finally, I think you have an extra slash in there, the command should read

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snmptrap -v 1 -c roadway 10.250.2.55 UCD-TRAP-TEST-MIB::demotraps "" 6 17 "" SNMPv2-MIB::syslocation.0 s "Here"

(the slash was there to signify that both lines in the doc should be run as one)

[jbennett]

Did you install this with the RPM in this document?
http://library.nagios.com/library/produ ... -nagios-xi

Yes.

Can you run

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cat /etc/snmp/snmptt.ini|tail

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[root@nagiosxivm ~]# cat /etc/snmp/snmptt.ini|tail
#DEBUGGING_FILE_HANDLER =
DEBUGGING_FILE_HANDLER = /var/log/snmptt/snmptthandler.debug

[TrapFiles]
# A list of snmptt.conf files (this is NOT the snmptrapd.conf file).  The COMPLETE path
# and filename.  Ex: '/etc/snmp/snmptt.conf'
snmptt_conf_files = <<END
/usr/share/snmp/mibs/processed_mibs/.txt
/etc/snmp/snmptt.conf
END

I even ran the following:

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[root@nagiosxivm ~]# addmib /usr/share/snmp/mibs/UCD-TRAP-TEST-MIB.txt

Also, is UCD-TRAP-TEST-MIB installed on the server you are sending the trap from?

This is from the server I'm sending the trap FROM:

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[root@nagiosxivm ~]# ls -l /usr/share/snmp/mibs/UCD-TRAP-TEST-MIB.txt
-rw-r--r-- 1 root nagios 268 Mar 19 19:46 /usr/share/snmp/mibs/UCD-TRAP-TEST-MIB.txt

Finally, I think you have an extra slash in there, the command should read

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snmptrap -v 1 -c roadway 10.250.2.55 UCD-TRAP-TEST-MIB::demotraps "" 6 17 "" SNMPv2-MIB::syslocation.0 s "Here"

(the slash was there to signify that both lines in the doc should be run as one)

Thanks. I tried it without the slash and I see the following:

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[root@nagiosxivm ~]# snmptrap -v 1 -c roadway 10.250.2.55 UCD-TRAP-TEST-MIB::demotraps "" 6 17 "" SNMPv2-MIB::syslocation.0 s "Here"
No log handling enabled - turning on stderr logging
Cannot find module (UCD-TRAP-TEST-MIB): At line 0 in (none)
UCD-TRAP-TEST-MIB::demotraps: Unknown Object Identifier

[scottwilkerson]

From the bottom of /etc/snmp/snmptt.ini remove this line

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/usr/share/snmp/mibs/processed_mibs/.txt

Lets restart both the snmp services

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service snmptt restart
service snmprapd restart

Then on the sending machine lets try

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snmptrap -v 1 -M /usr/share/snmp/mibs -c roadway 10.250.2.55 UCD-TRAP-TEST-MIB::demotraps "" 6 17 "" SNMPv2-MIB::syslocation.0 s "Here"

[jbennett]

I did everything you suggested, but I'm still getting the same message:

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[root@nagiosxivm ~]# snmptrap -v 1 -M /usr/share/snmp/mibs -c roadway 10.250.2.55 UCD-TRAP-TEST-MIB::demotraps \ "" 6 17 "" SNMPv2-MIB::syslocation.0 s "Here"
No log handling enabled - turning on stderr logging
Cannot find module (UCD-TRAP-TEST-MIB): At line 0 in (none)
UCD-TRAP-TEST-MIB::demotraps: Unknown Object Identifier

[scottwilkerson]

Can you run

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cat /usr/share/snmp/mibs/UCD-TRAP-TEST-MIB.txt

[jbennett]

Yes:

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[root@nagiosxivm ~]# cat /usr/share/snmp/mibs/UCD-TRAP-TEST-MIB.txt
D-TRAP-TEST-MIB DEFINITIONS ::= BEGIN
      IMPORTS ucdExperimental FROM UCD-SNMP-MIB;

demotraps OBJECT IDENTIFIER ::= { ucdExperimental 990 }

demoTrap TRAP-TYPE
        ENTERPRISE demotraps
        VARIABLES { sysLocation }
        DESCRIPTION "An example of an SMIv1 trap"
        ::= 17
END

[scottwilkerson]

You are missing a couple chars in the file....

edit that file to make the first line read

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UCD-TRAP-TEST-MIB DEFINITIONS ::= BEGIN

[jbennett]

Ah ha! I think we're getting somewhere!

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[root@nagiosxivm ~]# snmptrap -v 1 -M /usr/share/snmp/mibs -c roadway 10.250.2.55 UCD-TRAP-TEST-MIB::demotraps \ "" 6 17 "" SNMPv2-MIB::syslocation.0 s "Here"
No log handling enabled - turning on stderr logging
getaddrinfo:   Temporary failure in name resolution
unknown host:

[scottwilkerson]

we still have an extra \ in there, just run

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snmptrap -v 1 -M /usr/share/snmp/mibs -c roadway 10.250.2.55 UCD-TRAP-TEST-MIB::demotraps "" 6 17 "" SNMPv2-MIB::syslocation.0 s "Here"

Actually you can now likely make it

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snmptrap -v 1 -c roadway 10.250.2.55 UCD-TRAP-TEST-MIB::demotraps "" 6 17 "" SNMPv2-MIB::syslocation.0 s "Here"