[ubuntu-cloud] UEC Single Point of failure

[Darren Govoni]

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

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 . 
> 
> correct me if i am wrong please 
> 
> BR
> 
> Zeeshan
> 
> On 11/04/2010 08:53 AM, Björn Böttcher wrote: 
> 
> > Hi Ziv, 
> > 
> > 
> > 
> > yes thank you. If I install on two machines a CC like in the example
> > with 5 physical machines:
> > 
> > 
> > machine A: CLC/Walrus
> > machine B: CC1/SC1
> > machine C: NC1
> > machine D: CC2/SC2
> > machine E: NC2
> > 
> > 
> > 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) ?
> > 
> > 
> > Cheers,
> > 
> > Bjoern
> > 
> > 
> > 
> > 
> > 
> > 2010/11/4 Ziv Leyes <zivley at gmail.com>
> > 
> >         Hi Björn,
> >         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.
> >         Please take a look at the different possible topologies in
> >         the link below:
> >         https://help.ubuntu.com/community/UEC/Topologies
> >         
> >         
> >         Hope this helps,
> >         Ziv
> >         
> >         
> >         
> >         2010/11/3 Björn Böttcher <bboettche at googlemail.com>
> >         
> >                 Hi everyone, 
> >                 
> >                 
> >                 
> >                 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)
> >                 
> >                 What would happen is 1 of these crash?
> >                 
> >                 
> >                 Is there a recommended solution for backup an UEC
> >                 Configuration?
> >                 
> >                 
> >                 ~Bjoern
> >                 
> >                 
> >                 
> >                 
> >                 --
> >                 Ubuntu-cloud mailing list
> >                 Ubuntu-cloud at lists.ubuntu.com
> >                 Modify settings or unsubscribe at:
> >                 https://lists.ubuntu.com/mailman/listinfo/ubuntu-cloud
> >                 
> >         
> >         
> >         
> >         
> >         
> >         --
> >         Ubuntu-cloud mailing list
> >         Ubuntu-cloud at lists.ubuntu.com
> >         Modify settings or unsubscribe at:
> >         https://lists.ubuntu.com/mailman/listinfo/ubuntu-cloud
> >         
> > 
> > 
> > 
> 
> 
> 
> 
> -- 
> Regards
> 
> Zeeshan Ali Shah
> System Administrator
> PDC-Center for High Performance Computing
> KTH-Royal Institute of Technology , Sweden
> +46 8 790 9115


-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://lists.ubuntu.com/archives/ubuntu-cloud/attachments/20101104/2295d372/attachment.htm