Re: Local master node

From: Adrian Draghici <no email>
Date: Thu, 17 Mar 2016 16:29:12 +0000

Hi,

Thanks for the answers!

I'm not sure I understand how the intermediate node could be shut down
though? Assume the following scenario where all nodes are in EC2:

   - A is the intermediate node with the new AMI, receiving and executing
   commands like "starcluster start testcluster" etc.
   - B is the master node spawned by the cluster
   - C, D, E are slave nodes

Surely A would need to be alive until the end since the cluster needs to be
turned off from it?

On Thu, Mar 17, 2016 at 3:08 PM MacMullan IV, Hugh <
hughmac_at_wharton.upenn.edu> wrote:

> I agree: you can shut that node down while the cluster is running, too.
>
> -----Original Message-----
> From: starcluster-bounces_at_mit.edu [mailto:starcluster-bounces_at_mit.edu] On
> Behalf Of Cedar McKay
> Sent: Thursday, March 17, 2016 11:00 AM
> To: Adrian Draghici <draghici.adrian.b_at_gmail.com>
> Cc: starcluster_at_mit.edu
> Subject: Re: [StarCluster] Local master node
>
> A t2.nano costs about 2/3 of a penny per hour. In my opinion it's not
> worth doing any extra engineering effort to avoid that cost.
>
> Best,
> Cedar
>
> > On Mar 17, 2016, at 7:45 AM, Adrian Draghici <
> draghici.adrian.b_at_gmail.com> wrote:
> >
> > Hi all,
> >
> > I’m currently trying to find a way to start and manage a Starcluster
> fleet from machines where installing Starcluster itself is not an option.
> >
> > One way of doing this could be snapshotting the standard AMI with the
> Starcluster tool installed and then manually bring up an instance from this
> snapshot. The newly brought up instance will now be a coordinator node that
> can take commands to manage a cluster. However, I would need this node to
> also be the master in order to avoid having the overhead of one extra box.
> >
> > Is there any option for allowing the machine starting the cluster to
> also be the master (assuming it’s also in EC2)?
> >
> > I’ve seen slight variations of this question asked before here, but with
> no definitive answer. I would also really appreciate any other ideas on how
> to solve this!
> >
> > Thanks,
> > Adrian
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Received on Thu Mar 17 2016 - 12:29:41 EDT