LDAP server installation

I’m starting to get quite a number of systems at home. Physical machines, virtual machines, desktop, laptops, smartphones, tablet,… most of them running Unix flavor (I still have a few Windows, but less and less 🙂
At home, we are 5: 2 parents, and 3 kids. Guess what ? All of them are willing to use a computer…

So I build up a little network that I’m trying to manage as simply as possible.
My challenge of the day: centralize logins and passwords to ensure consistent authentication across any device at home for everyone in the family.
When I started as Unix administrator, we were implementing Sun YP (yellow pages), which turned into NIS soon after.
I was looking for something even more flexible and more “in-line” with today usage of authentication…
This is how I came to look at LDAP (OpenLDAP)
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Opensource Calendar and Address book server: DAViCal

As many of you, I’ve been using Google Calendar features for a long time. But that was not completely satisfying, from a pure “opensource” and intellectual property perspective…
I was also looking for a way to synchronize my various Thunderbird installations (my wife and I are both using several calendars and several address books…) across all devices we have at home/work (Linux, Windows, smartphones,…).

Yesterday, thanks to a colleague (another geek ? Check his website: ezIX), I found the answer. I decided to setup my own server for Calendar and for Address books.
This is DAViCal.
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Remote monitoring with gkrellm

Icon GkrelLMAs you know, I have several systems running at home (physical and virtual machines).
I was looking for a way to “see” quickly any bottleneck, or any unusual activity on those systems from my laptop.

My first reaction was to go for a gnome-like system monitor (gnome-system-monitor).
Despite all criticisms I could read, it was showing me all necessary information, especially real-time graphs for CPU, Memory, and Network.
But when I launched them remotely (through an SSH session, and with the appropriate DISPLAY forwarding option), it showed clearly that it was consuming around 4Mb/s of Network bandwidth just to display… itself !

So, I googled a little bit, and I rediscovered a tool I used to install a long time ago : gkrellm
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