Into.the.Void.

If you happen to use rrdtool to create graphs to monitor equipment you might have come upon some “spikes” in your graphs. These are perfectly normal and happend due to machines that have rebooted and have reset their counters or other anomalies that might occur.

There is a script called removespikes.pl made specially to fix these cases. You can either find the tool here: http://oss.oetiker.ch/rrdtool/pub/contrib/removespikes.tar.gz or get it from my blog removespikes.pl.gz

Extract it, and then type something in the command line like the following:
for i in /location/of/rrds/*; do /full/path/to/removespikes.pl $i; done;

You should probably see some messages like these:

Chopping peak at <!– 2005-10-25 17:00:00 EEST / 1130248800 –>
Chopping peak at <!– 2005-10-25 19:00:00 EEST / 1130256000 –>

That’s all…enjoy your graphs.

Filed by kargig at 17:41 under Linux,Networking
10 Comments | 19,921 views

I’ve ‘re-found’ (Charmed[] had originally showed it to me, but I couldn’t find afterwards) a really nice addon for my blog. It’s called Lightbox JS and it just makes image viewing a bit better.

Just click on the image below from a previous post about yahoo’s expired SSL certificate to see what it does

Filed by kargig at 03:28 under General
No Comments | 2,795 views