PXE: Not Just for Server Networks Anymore!
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Bill Childers is the Virtual Editor for Linux Journal. No one really knows what that means.
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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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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Comments
Using Abbreviations Indiscriminately
It is foolish and acts as a point of abandonment for a technical article not to have the acronym or abbreviation identified. It requires the reader to have the specialized vocabulary as part of their working vocabulary. Those who might eventually come to trust your message are tempted to abandon your article when it has acronyms and abbreviations that have not been identified at the first use.
In most scholarly or technical writing--other than the Internet--there are standards for what is allowable in technical writing. Not adopting some standard for minimum levels of communication both in writing and in what amounts to a complete explanation in a tutorial is an egregious lapse.
It will cost you readers and credibility.
~weatherguy
FOG Server a possible PXE solution for some
Some may find a FOG server may be suitable (http://www.fogproject.org/) for managing windows images. It lives nicely in a PXE environment as well.
As far as Windows SPs &
As far as Windows SPs & drivers go, you just need to slipstream them into the install image using something like nlite (XP - http://www.nliteos.com/) or vlite (Vista - http://www.vlite.net/) - works beautifully, even for the real PITA drivers like strange SATA raid controllers that you'd normally manually need to load from floppy.
The Windows unattended
The Windows unattended installations are very interessting but without vista and server 2008 support not useable for a systembuilder like me.
LTSP with dnsmasq
I don't know if it's just me, but I couldn't get your dnsmasq conf lines to work in Tomato 1.23. I'd expect it to need the /ltsp/i386/ prefix, but even with that, it didn't work for me. However, I stopped pounding on it when I got this to work instead:
dhcp-boot=/ltsp/i386/pxelinux.0,KWF2,192.168.1.12
Thanks for putting me on the right track though! It's so much easier not having to manually switch CAT5 cables and configure multiple interfaces + another DHCP server every time I want to boot one of my hosts off another (broken CD drives + multiple users on main desktop mean I use this a lot!).
Outstanding
I worked w/ the enterprise version of Ghost a year or so back. All of the docs said that PXE-style imaging was supported, but through multiple support calls, I was finally informed that it wasn't gonna happen...I spent a LOT of time trying to get it to work. (Granted, it probably *was* possible, but I wasn't smart enough/skilled enough/etc.)
That being said, I am extremely happy to see this. All of our machines at work are currently able to PXE boot, but we don't have the budget to purchase any high-end imaging stuff. I'm really, really excited about this article, and I can't wait to try it. Thanks so much for the article!
Josh
nfsmount error
If you are runnign the LTSP server on a Debian Etch/Lenny machine, make sure to set the windows DHCP option "017 Root Path" to "/opt/ltsp/i386" (minus quotes) to get rid of the "nfsmount: need a path" error.
Also, if your server is running on AMD64 (x86_64), run this command "sudo ltsp-build-client --arch i386" to make a x86 compatible image.
Thanks for the article, Mr. Childers. Will see if I get images installed instead of an unattended install of XP (we have ALOT of programs installed by default). Good article.