[Linux-cluster] Diskless Shared-Root GFS/Cluster

[Tom Mornini]

We boot from flash drives, then pivot root to SAN storage.

I agree with no drives in servers, but shared root is a
whole different ball game if you mean everyone using a
single filesystem for root.

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-- Tom Mornini, CTO
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On Jan 31, 2007, at 8:38 AM, isplist at logicore.net wrote:

> Did you ever give it a try at all? I mean, isn't anything potentially
> devastating if it becomes broken?
>
> In my case, it's silly to have drives running on every server and  
> then also
> having centralized storage. It would save power, heat and another  
> level of
> failure if I could use a sharedroot system.
>
> Of course, along the same lines, if it's too complex or finicky  
> then it might
> not be worth the trouble... for now.
>
> Mike
>
>
> On Wed, 31 Jan 2007 01:26:02 -0800, Tom Mornini wrote:
>> We strongly considered this when implementing our cluster
>>
>> infrastructure,
>> but decided against it when we realized just how devastating *any*
>> problem
>> with that shared root would be...
>>
>> --
>> -- Tom Mornini, CTO
>> -- Engine Yard, Ruby on Rails Hosting
>> -- Reliability, Ease of Use, Scalability
>> -- (866) 518-YARD (9273)
>>
>>
>> On Jan 30, 2007, at 11:39 PM, Marc Grimme wrote:
>>
>>> Mike,
>>> On Tuesday 30 January 2007 17:50, isplist at logicore.net wrote:
>>>> I saw a few posts from some working on this. Has anyone gotten
>>>> this to work
>>>> properly? My nodes simply do not need their hard drives, it's a
>>>> waste of
>>>> power and hardware since I have plenty of central storage. I would
>>>> like to
>>>> remove drives from nodes and boot the cluster diskless.
>>>>
>>>> I've seen the open shared-root project and such but those seem to
>>>> be about
>>>> building the entire cluster. Since I have the cluster going, I'm
>>>> looking
>>>> for information on how I can convert my nodes to diskless.
>>>>
>>>> Thanks for any information you can provide.
>>>>
>>>> Mike
>>> There are quite a some people (increasing every day) using open-
>>> sharedroot
>>> clusters in productive environments with loads of different
>>> applications. I
>>> also wrote a MiniHowto and some other docs (have a look at
>>> www.open-sharedroot.org) to give assistance.
>>>
>>> As Mike Hagmann already stated it is not a trivial task to build up
>>> such a
>>> cluster (as it's not a trivialtask to build up any type of  
>>> productive
>>> clusters, but isn't that a reason why we are doing all that ;-) )
>>> but the
>>> MiniHowto should help you on the one hand and on the other hand you
>>> can get
>>> more help from open-sharedroot or us at ATIX (www.atix.de). If you
>>> like.
>>> Feel free to ask.
>>> Regards and have fun
>>> Marc.
>>>>
>>>>
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>>>>
>>> --
>>> Gruss / Regards,
>>>
>>> ** Visit us at CeBIT 2007 in Hannover/Germany **
>>> ** in Hall 5, Booth G48/2  (15.-21. of March) **
>>>
>>> Marc Grimme
>>> Phone: +49-89 452 3538-14
>>> http://www.atix.de/               http://www.open-sharedroot.org/
>>>
>>> **
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>
>
>
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