StarCluster - Mailing List Archive

Re: using starcluster with a private AMI, ssh passwordless communication between nodes

From: Eduardo Gurgel Valente <no email>
Date: Fri, 17 Apr 2015 08:17:31 -0400

Hi Andrea,

Please checkout
It appears to be the same issue I had.


> On Apr 17, 2015, at 7:31 AM, Andrea La Rizza <> wrote:
> I'm using starcluster to manage an MPI cluster for parallel scientific computation. I don't want to use the pre-installed OpenMPI environment since the executables ? have to use are compiled with Intel softwares. So I have my private CentOS AMI created from aws console with all the Intel environment pre-installed. The problem is that IntelMPI uses by default ssh connectivity without password authentication to make nodes communicate amoung them to work. I want to know if there is some feauture in the config starcluster file such that ssh connectivity intra nodes comes pre setted with rsa authentication. I have read that this feauture should be enabled by default with the sgeadmin user, but when i launch the cluster at a certain point I received this error:
> !! ERROR - Error occured while running plugin 'starcluster.clustersetup.DefaultClusterSetup':
> !!! ERROR - Cannot create user: (uid: 0, gid: 0). This is caused by
> !!! ERROR - /home/ directory being owned by root. To fix this you'll
> !!! ERROR - need to create a new AMI. Note that the instance is still
> !!! ERROR - up.
> and neither the user sgeadmin is created neither the /etc/hosts file is filled with the names and IPs of all nodes of the cluster.
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Received on Fri Apr 17 2015 - 08:17:35 EDT
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