Automatic File Replication (Mirror) Across Two Storage Servers With GlusterFS 3.2.x On Ubuntu 12.10

January 22, 2013 by Leave a Comment

High-Availability Storage With GlusterFS 3.2.x On Ubuntu 12.10 – Automatic File Replication (Mirror) Across Two Storage Servers

This tutorial shows how to set up a high-availability storage with two storage servers (Ubuntu 12.10) that use GlusterFS. Each storage server will be a mirror of the other storage server, and files will be replicated automatically across both storage servers. The client system (Ubuntu 12.10 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.

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How To Upgrade From Fedora 17 To Fedora 18 With FedUp (Desktop & Server)

January 22, 2013 by Leave a Comment

How To Upgrade From Fedora 17 To Fedora 18 With FedUp (Desktop & Server)

This article describes how you can upgrade your Fedora 17 system to Fedora 18 with the help of the Fedora Updater (FedUp). The upgrade procedure works for both desktop and server installations.

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Work Started On Cinnamon Screensaver (Forked From GNOME Screensaver 3.4)

January 17, 2013 by Leave a Comment
Like we were telling you a while back, Linux Mint 15 will get a new screensaver, among other cool new features and changes.
The work on the new Cinnamon screensaver has started and the code is available on GitHub:
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Download AirDroid 2 APK, Now With Remote Camera, Find My Phone Features [Android]

January 17, 2013 by Leave a Comment
AirDroid 2 – browser (web) interface
AirDroid is a free Android application that you can use to control your Android device from your desktop, by using a web browser (so it on Linux and any other OS). It can be used to transfer files (upload to the phone or download to your desktop), browse images, quickly sens or read an SMS and many others.
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Debian Wheezy Local Git Server With Git Lite Workflow

January 17, 2013 by Leave a Comment

Debian Wheezy Local Git Server With Git Lite Workflow

This howto describes a shared local git [1] server setup for a small team. This is a repository layout that is familiar to anyone used to working with a traditional version control system. One of the tutorial objectives is to show detailed steps to prepare the server and publish the code on a public service like Github, Gitorius et. al. A second objective is to introduce the Git Lite Workflow in team development. This serves as an introduction to gits powerful branch and merge features. Your personal favorite workflow may be different compared to this model.

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Distributed Storage Across Four Storage Nodes With GlusterFS 3.2.x On CentOS 6.3

January 17, 2013 by Leave a Comment

Distributed Storage Across Four Storage Nodes With GlusterFS 3.2.x On CentOS 6.3

This tutorial shows how to combine four single storage servers (running CentOS 6.3) to one large storage server (distributed storage) with GlusterFS. The client system (CentOS 6.3 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.

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Enable TRIM On SSD (Solid-State Drives) In Ubuntu For Better Performance

January 16, 2013 by Leave a Comment
TRIM allows the OS to “inform a solid-state drive (SDD) which blocks of data are no longer considered in use and can be wiped internally“. Without using TRIM, the SSD speed decreases after a while so if you have a solid-state drive that supports TRIM, you should enable it so your SSD remains fast over time.
This isn’t easy to benchmark because the performance decreases over time so you’d neet to check the SSD speed constantly for a few months to see exactly how the SSD is affected when TRIM is not enabled. But if your SSD read / write speed decreases a lot over time and you haven’t enabled TRIM, this may be way.
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Fedora 18 `Spherical Cow` Released

January 16, 2013 by Leave a Comment

Fedora 18 “Spherical Cow” has been released today, featuring the latest stable GNOME 3.6 by default and a brand new installer UI.

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How To Back Up MySQL Databases With mylvmbackup On Ubuntu 12.10

January 16, 2013 by Leave a Comment

How To Back Up MySQL Databases With mylvmbackup On Ubuntu 12.10

mylvmbackup is a Perl script for quickly creating MySQL backups. It uses LVM’s snapshot feature to do so. To perform a backup, mylvmbackup obtains a read lock on all tables and flushes all server caches to disk, creates a snapshot of the volume containing the MySQL data directory, and unlocks the tables again. This article shows how to use it on an Ubuntu 12.10 server.

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How To Automatically Add A Disclaimer To Outgoing Emails With alterMIME (Postfix On Debian Squeeze)

January 16, 2013 by Leave a Comment

How To Automatically Add A Disclaimer To Outgoing Emails With alterMIME (Postfix On Debian Squeeze)

This tutorial shows how to install and use alterMIME. alterMIME is a tool that can automatically add a disclaimer to emails. In this article I will explain how to install it as a Postfix filter on Debian Squeeze.

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Installing Debian Wheezy (testing) With debootstrap From A Grml Live Linux

January 16, 2013 by Leave a Comment

Installing Debian Wheezy (testing) With debootstrap From A Grml Live Linux

This tutorial explains how to install Debian Wheezy (testing) with the help of debootstrap from a Grml Live Linux system (like it is used as a rescue system at Webtropia). This should work – with minor changes – for other Debian and Ubuntu versions as well. By following this guide, it is possible to configure the system to your needs (OS version, partitioning, RAID, LVM, etc.) instead of depending on the few pre-configured images that your server provider offers.

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How To Get Flash Player To Work With Steam For Linux On 64bit

January 13, 2013 by Leave a Comment
If you’re using Steam for Linux beta on 64bit, chances are you can’t watch game trailers because Steam can’t find Flash Player and you get a message similar to the one below:

“You need to have a specific Flash Player installed to view video content in Steam. Please follow these directions to get the right version for Steam. You will need this Flash player even if you already have the latest player for your default web browser”.

So here’s how to get Adobe Flash Player to work with Steam for Linux on 64bit.

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