Distributed Replicated Storage Across Four Storage Nodes With GlusterFS 3.2.x On Ubuntu 12.04

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This tutorial shows how to combine four single storage servers (running Ubuntu 12.04) to a distributed replicated storage with GlusterFS. Nodes 1 and 2 (replication1) as well as 3 and 4 (replication2) will mirror each other, and replication1 and replication2 will be combined to one larger storage server (distribution). Basically, this is RAID10 over network. If you lose one server from replication1 and one from replication2, the distributed volume continues to work. The client system (Ubuntu 12.04 as well) will be able to access the storage as if it was a local filesystem.

Streaming Your Desktop With Audio And Webcam Overlay In A Browser Using ffmpeg, crtmpserver And Flowplayer

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This tutorial is based on Ubuntu Lucid, but will work on later releases as well with small changes. I will show how I stream my desktop with audio from pulse and webcam from video4linux2. I will also show how to configure crtmpserver and flowplayer so you can watch the live stream from a web browser. In this scenario I use separate host for the tools. Flowplayer is installed on a server running Apache, crtmp server is on a separate server and ffmpeg is installed on the streaming desktop.

High-Availability Storage With GlusterFS 3.2.x On Ubuntu 12.04

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This tutorial shows how to set up a high-availability storage with two storage servers (Ubuntu 12.04) 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 12.04 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.

Install Compiz On The Unity Desktop On Ubuntu 12.04 (Precise Pangolin)

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This tutorial shows how you can configure Compiz on an Ubuntu Linux 12.04 (Precise Pangolin) Unity desktop (the system must have a 3D-capable graphics card - I'm using an NVIDIA GeForce 8200 here). With Compiz you can use beautiful 3D effects like wobbly windows or a desktop cube on your desktop. Ubuntu (Unity 3D) must be selected as your desktop environment.

http://www.howtoforge.com/install-compiz-on-the-unity-desktop-on-ubuntu-12.04-precise-pangolin

Running Shopware Community Edition On Nginx on Debian Squeeze/Ubuntu 12.04

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This tutorial shows how you can install and run Shopware Community Edition (version 3.5.6) on a Debian Squeeze or Ubuntu 12.04 system that has nginx installed instead of Apache (LEMP = Linux + nginx (pronounced "engine x") + MySQL + PHP). Shopware is a feature-rich ecommerce platform; I will use the Community Edition here which is free. nginx is a HTTP server that uses much less resources than Apache and delivers pages a lot of faster, especially static files.

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