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HowTo: Install configure KVM Virtualization & run Guest OSes in openSUSE

Post date: September 30, 2008, 21:09 Category: Emulation Views: 6845 Comments
Tutorial quote: Kernel-based Virtual Machine (KVM) is a Linux kernel virtualization infrastructure. KVM is a full virtualization solution for Linux on x86 hardware containing virtualization extensions Intel VT (vmx) or AMD-V (svm). It consists of a loadable kernel module, kvm.ko, that provides the core virtualization infrastructure and a processor specific module, kvm-intel.ko or kvm-amd.ko. KVM also requires a modified QEMU although work is underway to get the required changes upstream.


Post date: January 25, 2006, 22:01 Category: Security Views: 4922 Comments
Tutorial quote: Device-mapper is a new infrastructure in the Linux 2.6 kernel that provides a generic way to create virtual layers of block devices that can do different things on top of real block devices like striping, concatenation, mirroring, snapshotting, etc... The device-mapper is used by the LVM2 and EVMS 2.x tools. dm-crypt is such a device-mapper target that provides transparent encryption of block devices using the new Linux 2.6 cryptoapi. Writes to this device will be encrypted and reads decrypted. You can mount your filesystem on it as usual. But without the key you can't access your data. It does basically the same as cryptoloop only that it's a much cleaner code and better suits the need of a block device and has a more flexible configuration interface. The on-disk format is also compatible.

Easy Automated Snapshot-Style Backups with Linux and Rsync

Post date: February 1, 2006, 00:02 Category: Software Views: 3655 Comments
Tutorial quote: This document describes a method for generating automatic rotating "snapshot"-style backups on a Unix-based system, with specific examples drawn from the author's GNU/Linux experience. Snapshot backups are a feature of some high-end industrial file servers; they create the illusion of multiple, full backups per day without the space or processing overhead. All of the snapshots are read-only, and are accessible directly by users as special system directories. It is often possible to store several hours, days, and even weeks' worth of snapshots with slightly more than 2x storage. This method, while not as space-efficient as some of the proprietary technologies (which, using special copy-on-write filesystems, can operate on slightly more than 1x storage), makes use of only standard file utilities and the common rsync program, which is installed by default on most Linux distributions. Properly configured, the method can also protect against hard disk failure, root compromises, or even back up a network of heterogeneous desktops automatically.

The PartImage Handbook

Post date: May 21, 2005, 15:05 Category: Software Views: 3051 Comments
Tutorial quote: - Partition Image is a Linux/UNIX partition imaging utility: it saves partitions formatted using the Ext2FS (the linux standard), ReiserFS (a new journaled and powerful file system), JFS IBM journaled file systems from AIX, NTFS (Windows NT File System), FAT16/32 (DOS & Windows file systems), or HPFS (OS/2 file system) file system formats to an image file. Only used blocks are copied. The image file can be compressed in the GZIP/BZIP2 formats to save disk space, and split into multiple files to be copied on removable media (ZIP for example), or burned on a CD-R ...

- This allows the user to save a full Linux/Windows system, with a single operation. When problems occur (viruses, crash, error, ...), you just have to restore, and after several minutes, all your system is restored (boot, files, ...), and fully working.

- This is very useful when installing the same software on many machines: just install one of them, create an image, and then restore the image on all other machines. After the first one, each subsequent installation can be made automaticaly, and only requires a few minutes.

Installing Adobe AIR 1.5.1 For Linux On Ubuntu 9.04 (i386)

Post date: July 2, 2009, 11:07 Category: Desktop Views: 4026 Comments
Tutorial quote: Adobe AIR is a technology that lets you run Internet applications on the desktop. With AIR you do not need a browser to run such desktop applications. This tutorial explains how you can install Adobe AIR 1.5.1 for Linux on an Ubuntu 9.04 desktop and how you can install AIR applications.

Building A Virtual Server (VPS) With Debian 3.1 (Sarge) And OpenVZ

Post date: March 20, 2006, 20:03 Category: System Views: 3808 Comments
Tutorial quote: In this HowTo I will describe the steps to be taken to prepare a server for OpenVZ virtual machines on Debian 3.1 (Sarge) 32Bit Linux. With OpenVZ you can create multiple Virtual Private Servers (VPS) on the same hardware, similar to Xen and the Linux Vserver project. OpenVZ is the open-source branch of Virtuozzo, a commercial virtualization solution used by many providers that offer virtual servers. The OpenVZ kernal patch is licensed under the GPL license, and the user-level tools are under the QPL license.

Creating Really Teensy ELF Executables for Linux

Post date: April 12, 2005, 18:04 Category: Miscellaneous Views: 3251 Comments
Tutorial quote: If you're a programmer who's become fed up with software bloat, then may you find herein the perfect antidote.

This document explores methods for squeezing excess bytes out of simple programs. (Of course, the more practical purpose of this document is to describe a few of the inner workings of the ELF file format and the Linux operating system. But hopefully you can also learn something about how to make really teensy ELF executables in the process.)

Please note that the information and examples given here are, for the most part, specific to ELF executables on a Linux platform running under an Intel-386 architecture. I imagine that a good bit of the information is applicable to other ELF-based Unices, but my experiences with such are too limited for me to say with certainty.

The assembly code that appears in this document is written for use with Nasm. (Besides being more appropriate for our needs, Nasm's syntax beats the hell out of AT&T syntax for anyone who learned x86 assembly language before learning to use Gas.) Nasm is freely available and extremely portable; see http://nasm.sourceforge.net/.

Please also note that if you aren't a little bit familiar with assembly code, you may find parts of this document sort of hard to follow.

Building a Linux virtual server

Post date: June 9, 2005, 14:06 Category: Software Views: 3510 Comments
Tutorial quote: With the explosive growth of the Internet, the workload on servers providing Web, email, and media services has increased greatly. More and more sites are being challenged to keep up with the growing demands and are employing several techniques to avoid overloading their servers. Building a scalable server on a cluster of computers is one of the solutions that is being effectively put to use. With such a cluster, the increasing requests can be easily managed by simply adding one or more new servers to the existing cluster as required. In this article we will look at setting up one such scalable, network load-balancing server cluster using a virtual server via the Linux Virtual Server Project.

Modify Your Partitions With GParted Without Losing Data

Post date: January 23, 2007, 23:01 Category: System Views: 4468 Comments
Tutorial quote: This article shows how you can modify the partitioning of your Linux system with GParted (Gnome Partition Editor) without losing data. This includes resizing partitions (enlarging and shrinking), moving partitions on the hard drive, creating and deleting partitions, and even modifying filesystem types. GParted is a free partition editor available as a desktop program and also as a Live-CD. It supports the following filesystems: ext2, ext3, fat16, fat32, hfs, hfs+, jfs, linux-swap, reiserfs, reiser4, ufs, xfs, and even ntfs (Windows).

Elisa - open Media center, multimedia player for openSUSE Linux

Post date: September 11, 2008, 22:09 Category: Multimedia Views: 5311 Comments
Tutorial quote: Elisa is an open source cross-platform media center connecting the Internet to an all-in-one media player. While primary development and deployment platform is GNU/Linux and Unix operating systems, elisa also currently support Microsoft Windows. Elisa runs on top of the GStreamer multimedia framework. In addition to personal video recorder functionality (PVR) and Music Jukebox support, Elisa will also interoperate with devices following the DLNA standard like Intel’s ViiV systems.
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