[ubuntu-cloud] UEC Single Point of failure

[Björn Böttcher]

thanks to all! I think I have solved my problem so far. If not I will let you know ;-)

Björn

Am 04.11.2010 um 14:14 schrieb Darren Govoni <darren at ontrenet.com>:

> Why couldn't you load balance multiple Walrus' and have them all point to a shared NAS or SAN mount point?
> Not sure if it would create any conflict thoug
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> On Thu, 2010-11-04 at 08:59 +0100, Zeeshan Ali Shah wrote:
>> Hi , 
>> I think in your case the single point of entry/failure is still Machine A.  even if  have multiple CCs , we will still have single point of failure on ClC/Walrus level . 
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>> correct me if i am wrong please 
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>> BR
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>> Zeeshan
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>> On 11/04/2010 08:53 AM, Björn Böttcher wrote: 
>>> Hi Ziv,
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>>> yes thank you. If I install on two machines a CC like in the example with 5 physical machines:
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>>> machine A: CLC/Walrus
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>>> machine B: CC1/SC1
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>>> machine C: NC1
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>>> machine D: CC2/SC2
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>>> machine E: NC2
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>>> Do the CC1 and CC2 and also the SC have automatically the same information? Or do I need to configure something like a Hot-Standby between both machines (in this example B and D) ?
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>>> Cheers,
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>>> Bjoern
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>>> 2010/11/4 Ziv Leyes <zivley at gmail.com>
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>>> Hi Björn,
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>>> I guess you might be confused due to subtle semantics, it doesn't say it SHOULD be 1 CC, it says at least, the minimal requirement (not recommended for production environments) is to have 2 machines, but the more, the merrier.
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>>> Please take a look at the different possible topologies in the link below:
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>>> https://help.ubuntu.com/community/UEC/Topologies
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>>> Hope this helps,
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>>> Ziv
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>>> 2010/11/3 Björn Böttcher <bboettche at googlemail.com>
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>>> Hi everyone,
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>>> According to https://help.ubuntu.com/community/UE...nstallSeparate, there should be only 1 Cloud Controller (CLC) and, as I read the page, only 1 Walrus Controller. (WS3)
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>>> What would happen is 1 of these crash?
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>>> Is there a recommended solution for backup an UEC Configuration?
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>>> ~Bjoern
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>>> --
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>>> 
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>> -- 
>> Regards
>> 
>> Zeeshan Ali Shah
>> System Administrator
>> PDC-Center for High Performance Computing
>> KTH-Royal Institute of Technology , Sweden
>> +46 8 790 9115
> 
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