[Starcluster] StarCluster Saving State?

[Austin Godber]

Actually, I think I may have figured it out, though I haven't tracked it 
down in the code.  But the scenario is this:

  * I launched a cluster named mynewcluster with the key dash-gsg-keypair.
  * I manually killed the nodes of cluster in the AWS web console and 
deleted the security groups.
  * I then deleted the dash-gsg-keypair in EC2, removed it from my 
config, and deleted the key from disk.
  * I then launched the same cluster but with a new keypair.

At this point the listclusters and sshmaster commands exit with an error:
$ starcluster sshmaster mynewcluster
StarCluster - (http://web.mit.edu/starcluster)
Software Tools for Academics and Researchers (STAR)
   Please submit bug reports to starcluster at mit.edu

   cli.py:1079 - ERROR - key dash-gsg-keypair not found in config

Now, if I add a dash-gsg-keypair to my starcluster config file, 
listclusters works.

The reason I believe this is happening is because the terminated 
instance is still present in my instances list, it still contains 
reference to the dash-gsg-config key (as well as the security groups).

If this is really the case, then the command will start working without 
error when the instance disappears.

I think this can happen to anyone and I do not believe its simply a 
sideeffect of me trying to use sc as a library.

Austin




On 07/09/2010 01:21 PM, Austin Godber wrote:
> After I browsed the code I was under the impression that starcluster
> stored no local state beyond the config file.  It had appeared that
> everything was queried from EC2 itself (for instance listing clusters).
>
> Is this correct?  I am getting a KeyNotFound error for a key that I had
> deleted from prettymuch everywhere.  NOTE: I am doing weird stuff e.g.
> trying to use starcluster as a library.  So I may be encountering
> strange conditions.
>
> Austin
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