eDirectory usage in Cacti

Today I've released my templates which are used by myself at the Medical University of Graz to gather usage data of our Novell eDirectory deployment over SNMP.

SNMP access to internal statistics of eDirectory makes it possible to generate pretty graphs out of it and therefor I built a simple integration for Cacti. In fact it's just a bunch of XML files for cacti to make it aware of the OIDs necessary to address the appropriate values through SNMP plus it includes ready-to-use graph templates for all available eDirectory usage-data.

Instructions are provided inside the archive but installation and usage should be relatively self-explaining.

Novell eDirectory itself provides a service agent which integrates with net-snmp, thus my instructions are only valid for servers running GNU/Linux or any other UNIX derivates.

Download edirectory-0.1.tar.gz

Here's a sample screenshot showing the operations statistics for a relatively new server:

eDirectory Operations

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Wasting space

HarddBSOD on WIN2K3 while installing SQL2K5... OMGWTFBBQ! Photo by Adam Melanconrives are cheap nowadays, for sure, but what is suggested at the Microsoft newsgroups makes me sometimes want to go to Redmond and kick someones a**.

In a thread on whether the files and folders inside %windir%\$hf_mig$ can be deleted or not, the MVPs come up with the conclusion that a deletion would render a XP installation unable to perform further upgrades.

On my Win2k3 servers (~20) here at MUG each of those folders takes up roughly about 600MiB of diskspace (enough to fit a whole GNU/Debian installation by the way). While it would be easy to just add a new harddrive, it proves rather difficult to extend the filesystem without annoying downtime. Anyone saying "online-resizeable-filesystem"? Only available in Win2k8 or later.

So I'll continue to waste a total of 12GiB of diskspace and wait for the day the OS gets replaced by something sane.

End of daily rant!

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Bubble-Simulation

Red bubbles floating to the top, indicating problems.

Just thought I might share this one. It's a sneak preview on a late idea of mine: Visualizing Nagios/Icinga host- and service-states by showing them as floating bubbles.

If a critical state occurs a new bubble (like the red ones above) is created and it will float to the top of the screen with it's velocity depending on the severity of the problem. It will then float there until the problem has been dealt with and the state returns to normal.

I'm currently implementing it using the Processing library and the Eclipse IDE (I don't like the one shipped with Processing).

The code I've written so far can be checked out at my Subversion repository:

http://subversion.fladi.at/scratchpad/shared/trunk/NagTV/

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Cisco sucks at IPv6

Bay Bridge Silhouette Photo by Thomas HawkFinally, got a 877w, upgraded it to 52MB flash memory to be able to run IOS 15.

Still no luck with IPv6: Cisco does not support IPv6 on BVI interfaces (bridges). A search on the web shows that this is a long known problem among early adopters of IPv6 but Cisco gives a big sh*t about it, denying to fix the problem also known to them as CSCej50923.

As of now (Cisco IOS Software, C870 Software (C870-ADVIPSERVICESK9-M), Version 15.0(1)M, RELEASE SOFTWARE (fc2)) there is no possible way to use WLAN and LAN as a single bridge for IPv6. I'm about to resort to using both interfaces as a separate subnet and route between them. That should work out as well.

Still, I'll stick to it: CISCO SUCKS!

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Tote Hose bei den 26c3 Streams

Sitze gerade frustriert mit einer Flasche Club-Mate vor den nicht funktionierenden Streams vom 26c3. Dabei hätte ich so ein schönes Icecast2 Relay am Start gehabt :-)

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