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

January 8, 2013 by Leave a Comment

Distributed Replicated 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 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 (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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Installing Adito/OpenVPN-ALS On CentOS

January 8, 2013 by Leave a Comment

Installing Adito/OpenVPN-ALS On CentOS

OpenVPN-ALS, formerly known as Adito, is not to be confused with OpenVPN. They both brilliant tools that work in completely different things, but in a similar way. Confused? Excellent… OpenVPN-ALS (from now on known as Adito, because I find it less confusing) is a browser based SSL VPN that enables you to acess resources on your own network, even if you are behind a restrictive proxy and/or firewall.

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How To Install Percona Server 5.5 On Ubuntu 12.10

January 8, 2013 by Leave a Comment

How To Install Percona Server 5.5 On Ubuntu 12.10

Percona Server is a drop-in replacement for MySQL. It offers more performance and scalability than the default MySQL server coming with your Linux distribution, while it uses the same init scripts and command line tools which makes it easy to use. This tutorial explains how to install Percona Server 5.5 on Ubuntu 12.10.

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Install Openldap From Source And Configure Multi-Master Replication

January 2, 2013 by Leave a Comment

Install Openldap From Source And Configure Multi-Master Replication

Going forward to my previous document on setting up a Qmail Server with Openldap, I am now sharing a doc on how we can set up an Openldap in multi-master replication mode. So If you want more than one ldap-server for redundancy here we go.

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How To Properly Mount Android 4.0+ Devices In Ubuntu Using Go-mtpfs

December 30, 2012 by Leave a Comment
Mounting an Android 4.0+ device in Ubuntu is pretty tricky, but there is a FUSE filesystem called Go-mtpfs, created by a Google employee because “mtpfs was very unstable” for him, which works great. Read on to find out how to use it and easily install it in Ubuntu using a PPA!
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Steam For Linux Now Available To All Users

December 28, 2012 by Leave a Comment
Valve has just announced that Steam for Linux (beta) is now available to all Steam users, just in time for the Steam Winter sale which starts today:
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Get A HTC-Like Weather / Clock Widget In Ubuntu With My Weather Indicator, Now With Widgets Support

December 23, 2012 by Leave a Comment
My Weather Indicator has got widgets support a few days ago, but I didn’t write about it back then because it was the initial widgets release and there was still work to be done.
Today, the application has been updated, adding 3 weather widget styles along with options to display the widget on top (or under), or to hide the indicator when the widget is displayed:

- My Weather Indicator “full” widget is a HTC-like weather / clock widget:

[Read more...]

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Debian Squeeze LDAP Server With OpenLDAP And phpLDAPadmin

December 23, 2012 by Leave a Comment

Debian Squeeze LDAP Server With OpenLDAP And phpLDAPadmin

This tutorial will show you how you can set up an LDAP and webinterface to manage the LDAP server on Debian Squeeze.

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High-Availability Storage With GlusterFS 3.2.x On CentOS 6.3 – Automatic File Replication (Mirror) Across Two Storage Servers

December 23, 2012 by Leave a Comment

High-Availability Storage With GlusterFS 3.2.x On CentOS 6.3 – Automatic File Replication (Mirror) Across Two Storage Servers

This tutorial shows how to set up a high-availability storage with two storage servers (CentOS 6.3) 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 (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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Options For User Auditing On Linux Platforms

December 23, 2012 by Leave a Comment

Options For User Auditing On Linux Platforms

A variety of methods exist for auditing user activity in UNIX and Linux environments. Some of them come preinstalled within common distributions, some can be downloaded as freeware, and some are commercially available products. Here are some of the most popular methods for auditing. Each method is described, along with tips for how to make the best use of each method. In addition, guidance is provided to show what type of auditing each method is best suited for.

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Download Steam For Linux Skin Manager (Includes Ambiance And Radiance Skins)

December 18, 2012 by Leave a Comment
Martin Kozub, who has created the first Ubuntu-like skin for the Steam Linux client, has released a simple Skin Manager for Steam (obviously, for the Linux client) which you can use to install or remove skins.
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