dhcpd-snmp

[barbereaus]

Hello all,

I put my templates for graph dhcp3-server under Linux
I give you a little howto for the installation/configuration on your dhcp3 server and on your cacti server.

Good Luck

EDIT : Correction of the error recovery by andreukit, thanks

Hi Tosage,
in your howto you mention some cacti graph templates (cacti_graph_template_dhcpd_-_shared_network_state.xml and cacti_graph_template_dhcpd_-_network_state.xml) but dont specify where to find them.
Can you let me know?

Thanks,

[tosage]

I have put the two Template, sorry for forgetting

[barbereaus]

I have put the two Template, sorry for forgetting

Thanks. That worked for me.
You may also want to provide the data query templates for people to import.

Anyway, merci.

[tosage]

OK, it's do

De rien

[gaudy2001]

Hola,

perdonar que escriba en español, pero mi ingles es muy malo y no soy capaz de hacer funcionar estas gráficas.
Necesito urgentemente monitorizar el estado de los DHCP's de mi red. ¿Alquien me podria hechar una mano?.

Un saludo.

[gymmarn]

Hello all,

I put my templates for graph dhcp3-server under Linux
I give you a little howto for the installation/configuration on your dhcp3 server and on your cacti server.

Good Luck

EDIT : Correction of the error recovery by andreukit, thanks
EDIT2 : Put the Zip with the two Graph Template and Data Queries, i had forgotten :/

Thank you for these scripts! I only have 1 tiny problem, the SNMP doesn't return all the pools to my cacti.

In my dhcpstats.csv I got 253 unique IP ranges. But when I try to get them via SNMP I only get 164.
Even tried checking it manually via cli on my cacti hos:

root@cacti-srv#snmpwalk -v1 -c public <MY IP> .1.3.6.1.4.1.2021.250.255.2 | wc -l
164 <- sigh

Probably the problem lies with the perl script, /etc/dhcp/dhcp-network-stat.pl

Any tips is greatly appreciated!

[tosage]

Hello gymmarn,

Can you put the Line 34
my $dbg=0;
to
my $dbg=1;

And put the result on the forum ?

Thanks !

[sdankner]

Hello all,

Sorry to necro this thread, however I'm trying to implement the dhcpd-snmp method of getting statistics back on my Linux DHCP Server. I have the script working, and the values are coming in via SNMP when requested.

The problem is that the graph is adding the data as kilobytes instead of the real numbers. For example: If the number of addresses in the pol is 4096, it is added to the graph as 4.09k.

I've tried setting the GPRINT to Exact Number, and that does not solve the issue. Does anyone know what I can do to correct this?

Thank you

[tosage]

Hello,

Normally there is the value to change for each item.

Graph Template items.png (30.42 KiB) Viewed 5101 times

I test on my installation now and I could see the changes in real time (after a refresh of my web page )

[sdankner]

I've tried matching your settings, but unfortunately my graph is still displaying the values as 4.09k.

[tosage]

@sdankner : Sorry to reply so late, your Gprint Preset Exact Numbers as below :
You can find it in Graph Management - Gprint Presets

%8.0lf

[elbuit]

In my dhcpstats.csv I got 253 unique IP ranges. But when I try to get them via SNMP I only get 164.
Even tried checking it manually via cli on my cacti hos:

Same happens to me.
It's due a sort OID mechanism in dhcp-network-stat.pl.
If you have'nt more than 10 pools, nothing happens, but if you have more than ten:

Code: Select all

getnext
.1.3.6.1.4.1.2021.250.255.1.1
.1.3.6.1.4.1.2021.250.255.1.10

And not .1.3.6.1.4.1.2021.250.255.1.2.

To solve this, I sorted OIDs using this code:
http://codelab.ferrarihaines.com/archives/76

I attach dhcp-network-stat.pl pachetd.

[tosage]

Thanks for your work

[D43m0n]

Hi Tosage,

I've downloaded your much appreciated scripts and templates. I've got snmp output, except cacti isn't graphing yet (the rrd file isn't created).

So far I've followed your "HOWTO - Installation.txt" to the letter. The part in the "HOWTO" that confuses me, is action number 8, to go to Devices -> DHCP host -> Add Graph Template (which is what I assume is you advise us to do). In the manual it says:

Go on your DHCPD Server, select DHCPD Network if you want graph one or more network and Verbose.
If you want graph all your Shared Network, select DHCPD Shared Network and verbose
Click on Create Graphs for this host and select what you want graph.

I can't choose "Verbose" when adding a Graph Template. But when I choose one or both "DHCPD - Shared Network State" or "DHCPD - Network State" templates, I need to enter something:

add_graph_template.png (20.96 KiB) Viewed 4353 times

What do I need to enter here?

I'm running Cacti 0.8.7g BTW

[tosage]

Hello,

Maybe is not "clear" in my HOW TO but to activate the dhcpd template you need to :

1 - Import all zipped xml in your CACTI server
2 - Put all perl script in your dhcpd server, etc...
3 - In the front-end Cacti, go in the sub menu Devices and enter in your dhcpd server
4 - In Associated Data Queries section, select the data query DHCPD - Network State or DHCPD - Shared Network State
5 - Click on Verbose to see if it's works (you should wait a few minutes that scripts are do theirs jobs)

David

PS : Sorry, my english is what it is