Re: [Starcluster] Starcluster post from alex.gorban_at_gmail.com requires approval

From: (wrong string) Александр Горбань <no email>
Date: Fri, 18 Sep 2009 22:23:39 +0400

You need to cope with incorrect keypair. Cause you can have some instances
started with different keypairs.

2009/9/18 Justin Riley <jtriley_at_mit.edu>

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> Hi Alex,
>
> Thank you for using StarCluster! I'd like to invite you to join the
> mailing list at some point. I've cc'd the list so that others can view
> the response, I hope you don't mind.
>
> Regarding your bug report, this is something I'm aware of and am working
> to fix in the next release of StarCluster.
>
> Currently, StarCluster has almost no accounting for what nodes were
> started by StarCluster previously. For now, the software assumes that
> the only EC2 instances you have in AWS are those started by StarCluster
> AND that only one StarCluster has been started. Only under these
> circumstances will the -m and -n options will work correctly.
>
> This is clearly NOT optimal. I plan to implement a mechanism for proper
> cluster accounting (including multiple cluster support):
>
> My idea thus far is to:
>
> 1. Iterate through all EC2 instances (regardless of AMI) looking for a
> file on the instance that indicates that it's a master node.
>
> 2. This file will contain all of the slave instances associated with
> that master and thus help to eliminate the need for exhaustive search
> (ie it will let me reduce the number of instances to search as I
> encounter each master node).
>
> 3. This information will then be cached (for performance) and used for
> the -l, -m, and -n options.
>
> 4. I will likely add a -u option will update the local cache.
>
> 5. Anytime you run the -s or -t options, the cache will also be updated.
>
> 6. Along with this I will be adding a -c option for specifying which
> cluster you would like these options (ie -m, -n, -l, -t etc) to operate on.
>
> This is the direction I'm heading as of now, but I would certainly
> entertain any other ideas on how to properly account for clusters
> launched by StarCluster.
>
> I'll keep you posted as I make progress on this.
>
> Thanks again for using StarCluster!
>
> ~Justin
>
>
> > Hello,
> >
> > I've several running instances in AWS, and start 2 cluster instances. If
> > I try to invoke "starcluster -m" it is trying to make ssh connection to
> > previously running instances - not by starcluster
> >
> > ---
> > Best regards,
> > Alexander Gorban
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Best regards,
Alexander Gorban

Received on Fri Sep 18 2009 - 14:24:15 EDT