StarCluster - Mailing List Archive

Re: Changing iinstance type for everynode in the cluster

From: Rayson Ho <no email>
Date: Thu, 18 Sep 2014 01:17:37 -0400

I've never tried something like this myself, but I believe it would work if
you stop the EBS cluster (*NOT* terminate), and then change the instance
type from the EC2 management Console, and then restart the cluster, then
StarCluster would happily reconfig the cluster for you:

Just a reboot won't do it, as the private IP address changes when you
change the instance type, and /etc/hosts would need to be changed again.

(Test with a 2-node t1.micro cluster and change the type to t2.micro before
doing anything experimental on a real production cluster.)


Open Grid Scheduler - The Official Open Source Grid Engine

On Wed, Sep 17, 2014 at 10:53 PM, Ramon Ramirez-Linan <>

> Hi,
> Is there a way of changing the instance type for the entire cluster after
> it has already be launched?
> I want to launch a 30 nodes cluster with a cheaper instance type to
> ingest data on each node's volume. Each node has a 1TB EBS attached and
> there is no need to share data between nodes (no nfs or anything). Then
> once the data is injected on each node I want to be able to change the
> cluster instances to a more expensive one (more CPU/RAM)
> Will cluster reboot let me do that?
> Thanks in advance
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> Navteca
> Ramon Ramirez-Linan
> C: 301.789.9139
> O: 202.505.1553
> * <>*
> 6301 Ivy Lane, Greenbelt, MD 20770
> Suite 700
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Received on Thu Sep 18 2014 - 01:17:41 EDT
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