Nagios Support Forum

hello people, I have a problem that I can not solve because I ask for help from this kind community.
I want to monitor a port of a cisco switch, I'm using mrtg, I generate the .log file and I get to see the graph and the consumption correctly (Out 40.7 Mb / s (4.1%), In 25.3 Mb / s (2.5%)), The port in question is fiber optic with a speed of 1GB, therefore that is the limit.
But when the file.cfg that corresponds to the host, I use the command:
check_command check_local_mrtgtraf! /var/www/mrtg/172.16.100.190_gigabitethernet1_0_25.log! AVG! 500000000,600000000! 900000000,1000000000! 10
On the Nagios graph and also using the pnp4nagios plugin, it shows me the wrong data, (Traffic OK - Avg. In = 2.0 MB / s, Avg. Out = 3.8 MB / s)
I was researching a lot, and maybe I saw some plugin use bits and other bytes. But I do not know why in one place the graph and consumption are good and in another place it is different.

I do the test with the dude, and it's equivalent to the graph that I attached to nagios2-mrtg, so it's apparently correct that configuration.

I hope you can help me. Greetings from Argentina

Would the use a different plugin be an option for you?

Also what version of the check_mrtgtraf plugin do you have? If you are using the check_mrtgtraf plugin from the Nagios plugins.

Have you tested out other plugins in the Nagios exchange for checking bandwidth or so?

https://exchange.nagios.org/

Currently, I am using
check_mrtgtraf v2.2.1 (nagios-plugins 2.2.1)

This is the config of my host:

define service {
use generic-service,srv-pnp
host_name sw-01
service_description Port 25 Bandwidth Usage
check_command check_local_mrtgtraf!/var/www/mrtg/172.16.100.190_gigabitethernet1_0_25.log!AVG!5000000,6000000!9000000,10000000!10
}

I need to be able to visualize the bandwidth of a network interface, the equipment is a cisco catalyst 2960 switch. Or maybe configure to show the option in real megaytes, I do not know why it shows so little in The Dude shows much more, or in the same mrtg it looks good. If there is another tool that I would like to recommend, but until now everything that probe did not work
.

I'm not entirely sure, you could try posting in the nagiosgraph discussion to see if anyone has encountered the same issue?
https://sourceforge.net/p/nagiosgraph/discussion/394748

Also, here's something I saw http://nagios-plugins.org/doc/man/check_mrtgtraf.html

It seems like the plugin hasn't been updated for quite some time now according to GitHub.

I was researching more, and I could do something, in the host configuration file /etc/mrtg/switch1.cfg in the options section I was changing values:

Originally had:
# to get bits instead of bytes and graphs growing to the right
#Options [_]: growright, bits

And I change it for this:
Options [_]: growright, nopercent, gauge
 
As a result of the graphics that it shows me through the web interface, it gives me the same result that I see on the nagios website. I think it's a format issue in Nagios but I can not imagine where it can be, in the case of mrtg I know where it is, and leaving the bits option shows me the real value in megabytes as attach to the screenshots, any suggestions?

I think it's the command, although I see that several tools show me this, it has to do with the output format of the command, that's why it shows that value, I do not know how to tell it to show the result as bits.

# ./check_mrtgtraf -F /var/www/mrtg/172.16.100.190_gigabitethernet1_0_25.log -a MAX

Result:
Traffic CRITICAL - Max. In = 1.5 MB/s, Max. Out = 3.7 MB/s|in=1.523050MB;;;0.000000 out=3.686069MB;;;0.000000

I'm using a script check_snmp_int_v3, I made it work but I do not know how to create a command and service, do they give me a hand?

./check_snmp_int.pl -v2c -H 172.16.100.190 -C public -n GigabitEthernet1/0/25 -k -BM -w 200000,400000 -c 600000,900000
Alarm at 15 + 5
SNMP v2c login
Filter : GigabitEthernet1/0/25
OID : 1.3.6.1.2.1.2.2.1.2.10123, Desc : GigabitEthernet1/0/23
OID : 1.3.6.1.2.1.2.2.1.2.10108, Desc : GigabitEthernet1/0/8
OID : 1.3.6.1.2.1.2.2.1.2.10126, Desc : GigabitEthernet1/0/26
OID : 1.3.6.1.2.1.2.2.1.2.5179, Desc : StackPort1
OID : 1.3.6.1.2.1.2.2.1.2.10117, Desc : GigabitEthernet1/0/17
OID : 1.3.6.1.2.1.2.2.1.2.10127, Desc : GigabitEthernet1/0/27
OID : 1.3.6.1.2.1.2.2.1.2.10104, Desc : GigabitEthernet1/0/4
OID : 1.3.6.1.2.1.2.2.1.2.10107, Desc : GigabitEthernet1/0/7
OID : 1.3.6.1.2.1.2.2.1.2.10119, Desc : GigabitEthernet1/0/19
OID : 1.3.6.1.2.1.2.2.1.2.10113, Desc : GigabitEthernet1/0/13
OID : 1.3.6.1.2.1.2.2.1.2.10106, Desc : GigabitEthernet1/0/6
OID : 1.3.6.1.2.1.2.2.1.2.10120, Desc : GigabitEthernet1/0/20
OID : 1.3.6.1.2.1.2.2.1.2.10111, Desc : GigabitEthernet1/0/11
OID : 1.3.6.1.2.1.2.2.1.2.10115, Desc : GigabitEthernet1/0/15
OID : 1.3.6.1.2.1.2.2.1.2.10121, Desc : GigabitEthernet1/0/21
OID : 1.3.6.1.2.1.2.2.1.2.1, Desc : Vlan1
OID : 1.3.6.1.2.1.2.2.1.2.10103, Desc : GigabitEthernet1/0/3
OID : 1.3.6.1.2.1.2.2.1.2.14001, Desc : Null0
OID : 1.3.6.1.2.1.2.2.1.2.5181, Desc : StackSub-St1-2
OID : 1.3.6.1.2.1.2.2.1.2.10101, Desc : GigabitEthernet1/0/1
OID : 1.3.6.1.2.1.2.2.1.2.10128, Desc : GigabitEthernet1/0/28
OID : 1.3.6.1.2.1.2.2.1.2.10118, Desc : GigabitEthernet1/0/18
OID : 1.3.6.1.2.1.2.2.1.2.10109, Desc : GigabitEthernet1/0/9
OID : 1.3.6.1.2.1.2.2.1.2.10116, Desc : GigabitEthernet1/0/16
OID : 1.3.6.1.2.1.2.2.1.2.10124, Desc : GigabitEthernet1/0/24
OID : 1.3.6.1.2.1.2.2.1.2.10112, Desc : GigabitEthernet1/0/12
OID : 1.3.6.1.2.1.2.2.1.2.14002, Desc : FastEthernet0
OID : 1.3.6.1.2.1.2.2.1.2.10102, Desc : GigabitEthernet1/0/2
OID : 1.3.6.1.2.1.2.2.1.2.10122, Desc : GigabitEthernet1/0/22
OID : 1.3.6.1.2.1.2.2.1.2.10110, Desc : GigabitEthernet1/0/10
OID : 1.3.6.1.2.1.2.2.1.2.5180, Desc : StackSub-St1-1
OID : 1.3.6.1.2.1.2.2.1.2.10105, Desc : GigabitEthernet1/0/5
OID : 1.3.6.1.2.1.2.2.1.2.10125, Desc : GigabitEthernet1/0/25
Name : GigabitEthernet1/0/25, Index : 10125
OID : 1.3.6.1.2.1.2.2.1.2.10114, Desc : GigabitEthernet1/0/14
File read returns : 0 with 72 rows
Interface speed : 1000000000
Write file returned : 1
Interface 0, check 0 : 11.5882787433628
Interface 0, check 1 : 31.8223325486726
GigabitEthernet1/0/25:UP !!Unable to write file /tmp/tmp_Nagios_int.172.16.100.190.GigabitEthernet 1_0_25 !! (11.6Mbps/31.8Mbps):(1 UP): UNKNOWN
#

Who created this one?
Basically, you do the same thing. You can just look at your current commands to get an idea of the syntax there. Is 172.16.100.190 called sw-01?

You don't say which version of Core you are using, but here's the documentation for objects for 4: https://assets.nagios.com/downloads/nag ... tions.html

Usually, commands would go in a commands.cfg file, but they don't have to.

What's the output ls -la /usr/local/nagios/etc? That will tell us a bit about your current setup and should help us tell you the best place to put the command.

This is the page of nagios, my problem is that the visualization but in a different format, I am using version 4.3.4 of Nagios Core. The ip correponde to switch sw-01, I leave the command and the service, the commands I have in the file commands.cfg in the directory objets where most are working well.

drwxrwxr-x 3 nagios nagios 198 Nov 3 13:31 objects

# 'check_local_mrtgtraf' definición de comando
define el comando {
        command_name check_local_mrtgtraf
        command_line $ USER1 $ / check_mrtgtraf -F $ ARG1 $ -a $ ARG2 $ -w $ ARG3 $ -c $
        }


definir servicio {
use generic-service, srv-pnp
host_name sw-01
service_description Port 25 Bandwidth Usage
check_command check_local_mrtgtraf!/var/www/mrtg/172.16.100.190_gigabitethernet1_0_25.log!AVG! 5000000,6000000! 9000000,10000000! 10
}

I'm using a script check_snmp_int_v3, I made it work but I do not know how to create a command and service, do they give me a hand?

./check_snmp_int.pl -v2c -H 172.16.100.190 -C public -n GigabitEthernet1/0/25 -k -BM -w 200000,400000 -c 600000,900000

Is this the script you want to create a service check for?

Did you define the command in your commands.cfg?

From how you ran the script you have something like this.
-v2c -H $HOSTADDRESS$ -C $ARG1$ -n $ARG2$ -k -BM -w $ARG3$ -c $ARG4$
It should look something like this? I don't have the script so I can't fully test it.

Either way, test it out and let us know.