By default, Xymon’s trends show metrics for the last 48 hours. Should you want to “only” get the last 24 hours on the main “trends” page, you have to edit the xymon/server/etc/xymonserver.cfg and edit or add the TRENDSECONDS variable. 86400 will render only the last 24 hours.
Note that TRENDSECONDS is optimized for the default RRDWIDTH and INTERVAL values. Setting random or too small TRENDSECONDS may lead to ugly graphics rendering.Continue reading...
I’m (once again) in an RRDtool coding time and I found this (dead?) blog, full of really nice explanations and examples on how to enlighten your RRDtool graphs. I’m actually using the information to render my Xymon metrics in a better way.
Be sure to read the Circles of Archimedes for pretty stylish graphs!Continue reading...
VMware provides a CLI and a Perl SDK that allows managing and monitoring vSphere and ESXi environment from Windows and Linux. The Perl SDK is also available in the FreeBSD ports tree.
Here’s how to install and, basically, use the VMware Perl SDK on FreeBSD.Continue reading...
Because it takes only a few minutes to do and because I didn’t find any tutorial on the Net, here’s my notes to get Xymon server running on FreeBSD.Continue reading...
I already managed to boot FreeBSD from ZFS ; a single disk ZFS pool. Now, let’s see how to boot FreeBSD-9-RELEASE from a ZFS pool made of 3 disks using RAIDZ configuration.
I used the FreeBSD-9.0-RELEASE-amd64-dvd1.iso CD-ROM image.Continue reading...