Cannot use snmp_check with snmp v3

[José Pedro Brito Röseler]

Hi Pablo.

 

Thanks for the fast reply.

 

Yes, if I change the key I get the same error:

 

[root at nagios]# /usr/lib64/nagios/plugins/check_snmp -P 3 -U snmpv3user -L authPriv -a MD5 -A v3p4ssword#1 -x DES -X v3p4ssword#2 -H 192.168.254.2 -o 1.3.6.1.2.1.1.3.0

External command error: snmpget: Authentication failure (incorrect password, community or key)

 

Could it be the version of check_snmp that is causing this problem?

 

[root at nagios]#  /usr/lib64/nagios/plugins/check_snmp --version

check_snmp v1.4.16 (nagios-plugins 1.4.16)

 

regards,

Pedro Röseler

 

From: Help [mailto:help-bounces+pedro.roeseler=av.it.pt at monitoring-plugins.org] On Behalf Of pablo muñoz
Sent: 7 de julho de 2015 15:47
To: Monitoring Plugins Users
Subject: Re: Cannot use snmp_check with snmp v3

 

Hello.

 

He is sure that the keys are well?

 

try to translate the MIB DISMAN-EVENT-MIB :: sysUpTimeInstance

 

For example:

 

/usr/lib64/nagios/plugins/check_snmp -H 192.168.254.2 -o .1.3.6.1.2.1.1.3.0 -P 3 -L authPriv -a MD5 -x DES -X v3p4ssword#2 -U snmpv3user  -A v3p4ssword#1  

 

 




Atte.

 

Pablo A. Muñoz Rojas
Reseller Nagios & Nagios Community Manager <http://www.nagios.org/communitynetwork> 
P: +56-32-3140734 | C: +56-9-85499668
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2015-07-07 11:17 GMT-03:00 José Pedro Brito Röseler <pedro.roeseler at av.it.pt>:

Hello.

 

I’m trying to check the uptime of a Cisco 2960X switch on Nagios with check_snmp plugin but I always get the following error:

 

[root at nagios]# /usr/lib64/nagios/plugins/check_snmp -P 3 -U snmpv3user -L authPriv -a MD5 -A v3p4ssword#1 -x DES -X v3p4ssword#2 -H 192.168.254.2 -o DISMAN-EVENT-MIB::sysUpTimeInstance

External command error: snmpget: Authentication failure (incorrect password, community or key)

 

I get the same error on the web console:



 

My switches.conf is like this:

 

# HOST DEFINITIONS

#

###############################################################################

###############################################################################

 

# Define the switch that we'll be monitoring

 

define host{

        use                     generic-switch,host-pnp

        host_name               cisco_2960x_IT2_Datacenter

        alias                   cisco 2960x 24p IT2 Datacenter

        address                 192.168.254.2

        hostgroups              switches_v3

        notification_interval   60

        icon_image              switch.png

        statusmap_image         switch40.png

        }

 

 

 

###############################################################################

###############################################################################

#

# HOST GROUP DEFINITIONS

#

###############################################################################

###############################################################################

 

# Create a new hostgroup for switches

 

define hostgroup{

        hostgroup_name  switches                ; The name of the hostgroup

        alias           Network Switches        ; Long name of the group

        }

 

define hostgroup{

        hostgroup_name  switches_v3             ; The name of the hostgroup

        alias           Network Switches with SNMP v3        ; Long name of the group

        }

 

###############################################################################

###############################################################################

#

# SERVICE DEFINITIONS

#

###############################################################################

###############################################################################

 

########## Switches with SNMP V3 ###################

 

# Service definition to monitor switch uptime using check_snmp

 

# Monitor uptime via SNMP

 

define service{

use                     generic-service

hostgroup_name          switches_v3

service_description     Uptime

check_command           check_snmp!-P 3 -U snmpv3user -L authPriv -a MD5 -A v3p4ssword#1 -x DES -X v3p4ssword#2 -o DISMAN-EVENT-MIB::sysUpTimeInstance

}

 

 

 

If I do the same test with snmpget, everything runs fine:

 

[root at nagios]# snmpget -v3 -l authPriv -u snmpv3user -a MD5 -A v3password#1 -x DES -X v3password#2 192.168.254.2 DISMAN-EVENT-MIB::sysUpTimeInstance

DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (783093831) 90 days, 15:15:38.31

 

snmpwalk also runs without problems:

 

[root at nagios]# snmpwalk -v3 -l authPriv -u snmpv3user -a MD5 -A v3password#1 -x DES -X v3password#2 192.168.254.8 DISMAN-EVENT-MIB::sysUpTimeInstance

DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (783167495) 90 days, 15:27:54.95

 

 

Do you have any idea of what might be happening? I’m using a FAN installation on Centos.

[root at nagios]# uname -a

Linux nagios 2.6.18-400.1.1.el5 #1 SMP Thu Dec 18 00:59:53 EST 2014 x86_64 x86_64 x86_64 GNU/Linux

 

Thanks in advance for your help!

 

Best regards,

Pedro Röseler

 

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