Tag Archive for 'Linux'

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Disabling User List in GDM (Gnome 3)

In a multi-user environment you really do not want a full list of usernames being displayed in the GDM login screen for security reasons. In order to disable this feature on my Gentoo lab systems running Gnome 3 and GDM I performed the following actions.

Open vSwitch on Gentoo – Setting Up Your First vSwitch

In my last post I outlined how to get Open vSwitch installed on Gentoo from source for version 1.11.0 as well as from portage using version 2.0.0. I also described how to associate Open vSwitch with with Xen based virtual machines. This guide will detail how to build your first virtual switch from scratch and […]

Installing Open vSwitch on Gentoo (Xen Hypervisor)

The Gentoo ebuild for Open vSwitch does not seem to work with the latest available kernel as of this writing (3.10.7-gentoo-r1). This post is documentation of the process that I performed in order to successfully install Open vSwitch on a Gentoo server running the Xen hypervisor. This guide assumes that you already have a Gentoo […]

Gentoo – FTP Server

If you have the need for a FTP server on your Gentoo system, Pure-ftp is a good choice. It is a lightweight, standards compliant, and production quality FTP server that is available in portage. To install pure-ftp do the following: The default use flags should be fine for most installations.

Gentoo – Zoneminder

The Zoneminder ebuild in the portage tree has been broken for a couple of years now. Here is the process I use to build Zoneminder from source on a Gentoo x86 install:

Linux – ISO Images

ISO images are very easy to manipulate at the command line in Linux. To make an ISO image from a CD or DVD simply insert the disc into the drive and type: This uses the dd command with the input set to /dev/cdrom and the output set to filename.iso. Change these values as necessary. Note […]

Xen Cloud Platform (XCP) – Cloning Hard Drive Woes

The main hard drive seems to be flaky in one of my XCP servers. I decided to use Clonezilla to clone sda to another drive to see if it is in fact the hard drive. After cloning over the drive I found that my LVM storage group VG_XenStorage-xxx was not mounting, and XenCenter was giving […]

Gentoo – Framebuffer Splash Image

If you are tired of staring at a black console screen on your Gentoo box you can trick it out a bit using Gensplash. Gensplash or “fbcondecor” allows you to use different background images, fonts and colors to decorate your console so you don’t have the standard black background and white text. It also allows […]

Gentoo – Deny Hosts

If you find your ssh server is getting hit by a lot of brute force attempts from the internet, and want to do something to defend yourself against them then denyhosts is for you! It helps to alleviate some of the stress on your server that occurs when someone or lots of someones are trying […]

Bash – File Backup Script

This script uses rdiff-backup to backup files on a Linux host using rysnc. The script then sends an email that notifies of it’s completion. Make sure to install the rdiff-backup package on your distro before running it.