[StarCluster] StarCluster Digest, Vol 68, Issue 3

[Pere Toran]

As far as I know, each node has to edit its /etc/hosts file to reflect
other nodes IPs. At least this step cannot be threaded, right?

Pere

2015-04-14 18:26 GMT+02:00 <starcluster-request at mit.edu>:

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> Today's Topics:
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>    1. parallel ssh support? (Ryan G)
>    2. Re: parallel ssh support? (MacMullan, Hugh)
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> Message: 1
> Date: Mon, 13 Apr 2015 14:42:33 -0400
> From: Ryan G <ngsbioinformatics at gmail.com>
> Subject: [StarCluster] parallel ssh support?
> To: "starcluster at mit.edu" <starcluster at mit.edu>
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> Hi all - Whenever I launch a cluster with a large # of nodes, I have to
> wait quite a bit of time because each node has to be configured
> separately.  The commands in my custom plugin are the same regardless of
> machine.  I was wondering if there was any support in StarCluster to use
> parallel-ssh to run the plugin on all the nodes at once?  This could save a
> lot of start-up time....
>
> Ryan
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> Message: 2
> Date: Mon, 13 Apr 2015 18:53:25 +0000
> From: "MacMullan, Hugh" <hughmac at wharton.upenn.edu>
> Subject: Re: [StarCluster] parallel ssh support?
> To: "starcluster at mit.edu" <starcluster at mit.edu>
> Message-ID:
>         <C35D2A9F0F1DBE47832D25035CA02DAB3A8D8A8B at GENO3.wharton.upenn.edu>
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>
> I concur. Threading for this? It's pretty non-intensive, just
> time-consuming. And adding/removing nodes can be pretty painful, as well,
> as it monkeys (serially) with /etc/hosts, keys, etc.
>
> -Hugh
>
> From: starcluster-bounces at mit.edu [mailto:starcluster-bounces at mit.edu] On
> Behalf Of Ryan G
> Sent: Monday, April 13, 2015 2:43 PM
> To: starcluster at mit.edu
> Subject: [StarCluster] parallel ssh support?
>
> Hi all - Whenever I launch a cluster with a large # of nodes, I have to
> wait quite a bit of time because each node has to be configured
> separately.  The commands in my custom plugin are the same regardless of
> machine.  I was wondering if there was any support in StarCluster to use
> parallel-ssh to run the plugin on all the nodes at once?  This could save a
> lot of start-up time....
> Ryan
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