Building Custom Firmware with OpenWrt
This article demonstrates a technique for providing Kerberos, LDAP, network filesystem, print and media services using a Linksys WRT160NL wireless router. The result is a low-cost network server for the home or small office. OpenWrt has a wide range of packages available, so there is potential for many other solutions to be developed around this capable platform. For example, Samba could allow tight integration with Windows clients. Another option is Netatalk, which provides native Mac OS X file sharing, including integration with Apple's Time Machine backup software. Linux, open-source applications and popular network hardware like the Linksys WRT160NL provide a solid basis for developing innovative devices.
Resources
“OpenLDAP Everywhere” by Craig Swanson and Matt Lung, LJ, December 2002 (see the section titled “Configure the Linux LDAP Client”): www.linuxjournal.com/article/6266
“Centralized Authentication with Kerberos 5, Part I” by Alf Wachsmann, LJ, January 2005 (see the section titled “Configuring the Clients”): www.linuxjournal.com/article/7336
“Serving Apples: Integrating Mac OS X clients into a Fedora network” by Mike Petullo, Red Hat Magazine, January 2008 (demonstrates how to configure Mac OS X clients): magazine.redhat.com/2008/01/17/serving-apples-integrating-mac-os-x-clients-into-a-fedora-network
Mike Petullo serves in the US Army and enjoys solving problems with innovative open-source software. He has been working with Linux since 1997 and welcomes your comments at mike@flyn.org.
Realizing the promise of Apache® Hadoop® requires the effective deployment of compute, memory, storage and networking to achieve optimal results. With its flexibility and multitude of options, it is easy to over or under provision the server infrastructure, resulting in poor performance and high TCO. Join us for an in depth, technical discussion with industry experts from leading Hadoop and server companies who will provide insights into the key considerations for designing and deploying an optimal Hadoop cluster.
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Enter to Win an Adafruit Pi Cobbler Breakout Kit for Raspberry Pi

It's Raspberry Pi month at Linux Journal. Each week in May, Adafruit will be giving away a Pi-related prize to a lucky, randomly drawn LJ reader. Winners will be announced weekly.
Fill out the fields below to enter to win this week's prize-- a Pi Cobbler Breakout Kit for Raspberry Pi.
Congratulations to our winners so far:
- 5-8-13, Pi Starter Pack: Jack Davis
- 5-15-13, Pi Model B 512MB RAM: Patrick Dunn
- 5-21-13, Prototyping Pi Plate Kit: Philip Kirby
- Next winner announced on 5-27-13!
Free Webinar: Hadoop
How to Build an Optimal Hadoop Cluster to Store and Maintain Unlimited Amounts of Data Using Microservers
Realizing the promise of Apache® Hadoop® requires the effective deployment of compute, memory, storage and networking to achieve optimal results. With its flexibility and multitude of options, it is easy to over or under provision the server infrastructure, resulting in poor performance and high TCO. Join us for an in depth, technical discussion with industry experts from leading Hadoop and server companies who will provide insights into the key considerations for designing and deploying an optimal Hadoop cluster.
Some of key questions to be discussed are:
- What is the “typical” Hadoop cluster and what should be installed on the different machine types?
- Why should you consider the typical workload patterns when making your hardware decisions?
- Are all microservers created equal for Hadoop deployments?
- How do I plan for expansion if I require more compute, memory, storage or networking?




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