Category: Linux

Linux is my primary operating system. I used it on the servers, desktops, laptops, netbooks, and even mobile phones since approximately 1997. I’ve tried a number of distributions over the years, and even created a couple myself. I still look around sometimes to see what others are up to. But most of my machines are running some sort of Red Hat – either a quick and easy Fedora Linux, or a stable and secure Red Hat Enterprise Server, or a cheaper CentOS alternative.

And while by now I am very comfortable in the Linux environment (both graphical and command line), I still discover a lot of new and interesting things about it. When I come across something worthy, I usually share it with the rest of the Open Software world, using this category.

First LDAP encounter

I have started to learn LDAP today. Here is how I did it:

  • Install new Red Hat Linux 7.2 server.
  • During install
    • Specify to authenticate through LDAP which is located at 127.0.0.1
    • I forgot to permit SSH connection during firewall configuration
    • In boot manager configuration, I have specified to use GRUB with which I don’t have any experience yet.

When I did all this, I have found myself in situation where machine refused any connections via secure shell, refused any logins locally, Result:

  1. Unusable machine
  2. Frozen butt (a/c in the server room)
  3. Complete reinstall
  4. Linux LDAP Tutorial

LTSP – Linux Terminal Server Project

Linux Terminal Server Project (LTSP) is a great tool for setting up diskless machines. I have setup a ThinkNIC thin client as described in the documentation in the matter of minutes. Next nice thing to try is running applications locally on thin client.