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Today's Topics:
1. Re: perl script for custom reports (Brian Marshall)
--- Begin Message ---
I tried that, but found that in L2 mode the arp table was pretty bare,
and I don't want all my devices in L3 mode.
Maybe I'm missing something though.
On 9/10/25 12:12, Jethro Binks wrote:
Notwithstanding any of your own work, for ArubaOS-CX arp tables in
particular:
https://github.com/netdisco/netdisco/issues/1379
Jethro.
. . . . . . . . . . . . . . . . . . . . . . . . .
Jethro R Binks, Network Manager,
Information Services Directorate, University Of Strathclyde, Glasgow, UK
The University of Strathclyde is a charitable body, registered
in Scotland, number SC015263.
------------------------------------------------------------------------
*From:* Brian Marshall via netdisco-users
<[email protected]>
*Sent:* 10 September 2025 7:57 PM
*To:* Oliver Gorwits <[email protected]>;
[email protected]
<[email protected]>
*Subject:* Re: [Netdisco] perl script for custom reports
Hi Oliver, thanks for the reply.
I was kind of afraid that it would be a new feature...I am stuck on an
old branch due to too many changes I haven't been able to upstream...I
may end up doing something like a custom javascript patch to
dynamically create the links for now or just live with having to
copy/paste. Its a custom CVE tracking database I also host in my
netdisco db. Would an old version have an easy way to define a field
to automatically hotlink to eg. the nodes view with the column value
as the url parameter?
As an aside, I've developed a collector plugin that may be useful in
this age of limited-or-no-arp-table devices (Aruba CX is the main
culprit for me): netdisco-flowcollector. I have created a platform
file for NFDump, since that's what I'm using.
It grabs the source mac/ip of every flow with just the SYN flag set
and filters out any macs that are associated with more that one IP or
that reference a known device IP/Alias, which seems to reduce
false-positives to basically zero.
I also created a netdisco-apicollector, but the CX series API didn't
yield any better arp data through the API than the CLI so I abandoned
the experiment, but the code is mostly complete and working.
Would there be any interest in the code for this?
On 9/8/25 04:05, Oliver Gorwits wrote:
Hi Brian
No problem asking again! A lot has been developed in the past couple
of years which might help.
One problem with making anything a hyperlink by using Perl munging is
that the output is then HTML escaped for safety by Netdisco,
rendering the link useless. This is why the old Plugins I released
for Observium and RANCID were quite a bit of work, adding template
code and so on.
Since then, we have the new external_links and custom_fields features
which allow these plugins to be entirely replaced by deployment.yml
config!
https://github.com/netdisco/netdisco/wiki/Configuration#external_links
<https://github.com/netdisco/netdisco/wiki/Configuration#external_links>
https://github.com/netdisco/netdisco/wiki/Configuration#custom_fields
<https://github.com/netdisco/netdisco/wiki/Configuration#custom_fields>
I'm not quite understanding how you attach a CVE number to a device,
or do you mean you have a separate database to look them up in?
Anyway, you can easily nowadays push some data into a custom field
(for a device or port), either via API or in a Hook, and then use
that custom field in a device or port hyperlink, using above config
options.
https://github.com/netdisco/netdisco/wiki/Hooks
<https://github.com/netdisco/netdisco/wiki/Hooks>
https://github.com/netdisco/netdisco/wiki/API#update-a-custom-field
<https://github.com/netdisco/netdisco/wiki/API#update-a-custom-field>
If you have another scenario in mind, please elaborate, as this is
where the features come from! :-)
regards
oliver.
On Sun, 7 Sept 2025 at 21:32, Brian Marshall via netdisco-users
<[email protected]
<mailto:[email protected]>> wrote:
Hi list, I know this is a _very_ old thread, but it just kind of
ended up with a link to the Wiki which, while an excellent source
of a lot of things to do with custom reports, still doesn't have
an example .pm for column munging.
I'd love to be able to do a few things like make some columns
into hotlinks (eg. CVE numbers going to NIST definitions), but
I'm not sure where to get started with the "munging".
On 6/24/21 02:14, Ruben Moretti via netdisco-users wrote:
Hi Oliver !
Thanks a lot !
Maybe a Perl script as an example to mung the data that is
called up in this way?I can't see how to access the input for
the script, and I don't know what the output should look like
either.I only know that the Perl script should have the same
name as the report tag and must be located under site_plugins.
Thanks in advance,
Am 23.06.2021 um 22:59 schrieb Oliver Gorwits:
A wiki page might do as well - can be collaboratively edited
with suggested reports and grouped by topic similar to the menus
....time passes...
I created one :)
https://github.com/netdisco/netdisco/wiki/Custom-Reports
<https://github.com/netdisco/netdisco/wiki/Custom-Reports>
On Wed, 23 Jun 2021 at 21:36, Michael Butash
<[email protected] <mailto:[email protected]>> wrote:
Probably nice to make a /contrib directory for these folks
could drop into a repo for other user-created reports they
find useful.
Reading this thread, I was wondering about looking at
making a custom report to fix nbt node views. It's really
quite annoying it doesn't give the ip address in the main
view, would be nice to add a like report with just that if
not adding to the existing one.
-mb
On Tue, Jun 22, 2021 at 11:23 PM Miha Kralj
<[email protected] <mailto:[email protected]>> wrote:
Another nice report is for finding all ports that
are: Port down, Admin Up, for 2 months
This means that ports are not used for at least 2
months and for security reasons should be shut down.
The time range is configurable inside the query.
reports:
- tag: portsdownall
label: 'Port down, Admin Up - 2 months'
category: Port
columns:
- { host: Device_name}
- { ip: ip}
- { port: Port}
- { name: Description}
- { status: Status}
- { status_admin: 'Status Admin'}
- { last_change: 'Last change'}
query: |
SELECT device.name <http://device.name/> AS host,
device_port.ip, device_port.port, device_port.name
<http://device_port.name/>, device_port.up AS status,
device_port.up_admin AS status_admin,
to_char((device.last_discover - (device.uptime -
device_port.lastchange) / 100 * interval '1 second'),
'YYYY-MM-DD HH24:MI:SS') as last_change from device_port
LEFT JOIN device ON device_port.ip = device.ip
WHERE device_port.up = 'down'
AND device_port.up_admin = 'up'
AND device_port.port NOT LIKE '%Vlan%'
AND (device.last_discover - (device.uptime -
device_port.lastchange) /
100 * interval '1 second') < (now() - interval
'2 month')
On Wed, Jun 23, 2021 at 8:07 AM Muris
<[email protected] <mailto:[email protected]>> wrote:
Does anyone else have any other handy custom
reports they can share?
*From: *Miha Kralj <[email protected]
<mailto:[email protected]>>
*Date: *Wednesday, 23 June 2021 at 15:20
*To: *Ruben Moretti <[email protected]
<mailto:[email protected]>>
*Cc: *<[email protected]
<mailto:[email protected]>>
*Subject: *Re: [Netdisco] perl script for custom
reports
Hi,
There is a simple way to make custom reports...
My way to create custom reports is to place yml
code at the end in environments/deployment.yml file
like this:
reports:
- tag: List_of_devices
label: 'List of devices'
category: Device
columns:
- { name: Device}
- { ip: ip}
- { creation: First_seen}
- { last_discover: Last_discover}
query: |
SELECT name, ip, creation::timestamp(0),
last_discover::timestamp(0) from device
ORDER BY name
After that you can find a report on the web
interface "Reports -- > Device -- > List of devices".
I hope it helps.
On Sun, Jun 20, 2021 at 3:31 PM Ruben Moretti via
netdisco-users
<[email protected]
<mailto:[email protected]>> wrote:
Hello !
Can anyone post some simple perl script
example for them ?
Thanks a lot.
https://github.com/netdisco/netdisco/wiki/Configuration#reports
<https://github.com/netdisco/netdisco/wiki/Configuration#reports>
You can munge the data retrieved from the
database by placing a Perl script with the same
name as the |reports| key into the
“|site_plugins|” directory of Netdisco’s home
area. The script can access |$config| for its
configuration and |@data| for the retrieved
data. It should return a list of munged data
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