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Ubuntu

Virtualization With KVM On Ubuntu 8.10

Post date: December 14, 2008, 13:12 Category: Installing Views: 3689 Comments
Tutorial quote: This guide explains how you can install and use KVM for creating and running virtual machines on an Ubuntu 8.10 server. I will show how to create image-based virtual machines and also virtual machines that use a logical volume (LVM). KVM is short for Kernel-based Virtual Machine and makes use of hardware virtualization, i.e., you need a CPU that supports hardware virtualization, e.g. Intel VT or AMD-V.
Ubuntu

Virtualization With KVM On Ubuntu 11.10

Post date: November 20, 2011, 11:11 Category: Installing Views: 28735 Comments
Tutorial quote: This guide explains how you can install and use KVM for creating and running virtual machines on an Ubuntu 11.10 server. I will show how to create image-based virtual machines and also virtual machines that use a logical volume (LVM). KVM is short for Kernel-based Virtual Machine and makes use of hardware virtualization, i.e., you need a CPU that supports hardware virtualization, e.g. Intel VT or AMD-V.
Ubuntu

Virtualization With KVM On Ubuntu 9.04

Post date: May 19, 2009, 12:05 Category: Miscellaneous Views: 5516 Comments
Tutorial quote: This guide explains how you can install and use KVM for creating and running virtual machines on an Ubuntu 9.04 server. I will show how to create image-based virtual machines and also virtual machines that use a logical volume (LVM). KVM is short for Kernel-based Virtual Machine and makes use of hardware virtualization, i.e., you need a CPU that supports hardware virtualization, e.g. Intel VT or AMD-V.
Linux

Genisoimage - Creates ISO-9660 CD-ROM filesystem images

Post date: April 16, 2009, 06:04 Category: Software Views: 4188 Comments
Tutorial quote: genisoimage is a pre-mastering program for creating ISO-9660 CD-ROM filesystem images, which can then be written to CD or DVD media using the wodim program. genisoimage includes support for making bootable “El Torito” CDs, as well as CDs with support for the Macintosh HFS filesystem.

CentOS

Network Card Bonding On CentOS

Post date: July 5, 2007, 00:07 Category: Network Views: 6363 Comments
Tutorial quote: Bonding is the same as port trunking. In the following I will use the word bonding because practically we will bond interfaces as one. Bonding allows you to aggregate multiple ports into a single group, effectively combining the bandwidth into a single connection. Bonding also allows you to create multi-gigabit pipes to transport traffic through the highest traffic areas of your network. For example, you can aggregate three megabits ports into a three-megabits trunk port. That is equivalent with having one interface with three megabytes speed.
BSD

Firewalling with OpenBSD's PF packet filter

Post date: April 19, 2005, 02:04 Category: Network Views: 7131 Comments
Tutorial quote: PF operates in a world which consists of packets, protocols, connections and ports.

Based on where a packet is coming from or where it's going, which protocol, connection of port it is designated for, PF is able to determine where to lead the packet, or decide if it is to be let through at all.

It's equally possible to direct network traffic based on packet contents, usually referred to as application level filtering, but this is not the kind of thing PF does. We will come back later to some cases where PF will hand off these kinds of tasks to other software, but first let us deal with some basics.

We've already mentioned the firewall concept. One important feature of PF and similar software, perhaps the most important feature, is that it is able to identify and block traffic which is you do not want to let into your local network or let out to the world outside. At some point the term 'firewall' was coined.
Ubuntu

Distributed Storage Across Four Storage Nodes With GlusterFS On Ubuntu 9.10

Post date: January 14, 2010, 01:01 Category: Installing Views: 2860 Comments
Tutorial quote: This tutorial shows how to combine four single storage servers (running Ubuntu 9.10) to one large storage server (distributed storage) with GlusterFS. The client system (Ubuntu 9.10 as well) will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling to several peta-bytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. Storage bricks can be made of any commodity hardware such as x86_64 servers with SATA-II RAID and Infiniband HBA.
Fedora

Distributed Storage Across Four Storage Nodes With GlusterFS On Fedora 12

Post date: March 4, 2010, 12:03 Category: Installing Views: 2973 Comments
Tutorial quote: This tutorial shows how to combine four single storage servers (running Fedora 12) to one large storage server (distributed storage) with GlusterFS. The client system (Fedora 12 as well) will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling to several peta-bytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. Storage bricks can be made of any commodity hardware such as x86_64 servers with SATA-II RAID and Infiniband HBA.
Unix+clones

Tutorial : Create Glassy Buttons with Gimp

Post date: April 17, 2008, 03:04 Category: Software Views: 5541 Comments
Tutorial quote: After seeing few glassy logo box and buttons. I thought of making the same using Gimp.. I searched for Tutorials for Gimp ,but all in vain.. while users from PS can find a bunch of 'em. Actually it was PS tutorial from where I got the idea of creating Glassy Logo Box..

In this Tutorial we will learn to create glassy logo box.. These looks like a professional creation but the method used is very simple :)
Debian

Giving users a home directory automatically

Post date: June 16, 2006, 21:06 Category: System Views: 3173 Comments
Tutorial quote: If you are using LDAP or NIS to manage users you might discover users having problems because they don't have a home directory on each machine they can connect to. Thankfully there is a simple solution for creating home directories upon demand for users.

The Pluggable Authentication Modules library, or PAM, is a collection of shared libraries which control how users login to systems. There are a number of modules installed which can be used to restrict user access to systems in different ways. There are also several utility modules which can be used to customise login behaviour.
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