Re: Custom AMI .ssh directories disappearing on restart

From: danny jacobs <no email>
Date: Wed, 16 May 2012 18:58:07 +0000

Yep. I've got it working now.
Mount your own home drive, create users once, profit.
I've started and stopped several times, all is roses.

Thanks for this awesome thing!

~Danny

On Wed, May 16, 2012 at 6:38 PM, Justin Riley <jtriley_at_mit.edu> wrote:
> The plugin needs to run each time you start the cluster in order to
> create the users on all nodes. User accounts are not baked into the AMIs
> so they must be created everytime you launch a cluster. If the $HOME
> folder already exists when creating the user it is reused along with any
> existing ssh keys. Make sense?
>
> ~Justin
>
> On Mon, May 07, 2012 at 09:05:52AM -0600, danny jacobs wrote:
>> Hi Justin,
>>
>> Mounting my own /home makes sense, but why do I want to run the
>> createusers plugin each time I start the server?
>>
>> Thanks
>> ~Danny
>>
>> On Mon, May 7, 2012 at 8:44 AM, Justin Riley <justin.t.riley_at_gmail.com> wrote:
>> > Hi Danny,
>> >
>> > First of all if you always want to use the same SSH keys for all 30
>> > users you need to specify an EBS volume for StarCluster to attach,
>> > mount, and NFS-share on /home, e,g:
>> >
>> > [volume myhome]
>> > volume_id = vol-923923
>> > mount_path = /home
>> >
>> > [cluster smallcluster]
>> > ...
>> > volumes = myhome
>> >
>> > This will preserve the entire /home folder when the cluster is
>> > terminated. The next time the cluster is started, using the
>> > 'smallcluster' template above, the /home folder will be reattached and
>> > the SSH keys will be reused by the createusers plugin.
>> >
>> > Concerning the 'disappearing' of .ssh I'm guessing you ran the plugin
>> > using the 'runplugin' command which does a quick one-time run of the
>> > plugin. In general if you wish to use a plugin every time you start a
>> > cluster you need to put the plugin in one of your cluster template's
>> > plugins list, e.g.:
>> >
>> > [cluster smallcluster]
>> > ...
>> > volumes = myhome
>> > plugins = createusers
>> >
>> > Hope that helps,
>> >
>> > ~Justin
>> >
>> > On 5/4/12 9:35 PM, danny jacobs wrote:
>> >> Hi Everyone,
>> >>
>> >> Background:
>> >> I created my own EBS-backed AMI by copying one of the starcluster AMIs
>> >> in the way described in the docs. ie
>> >>
>> >> starcluster start -o -s 1 -i m1.large -n ami-999d49f0 imagehost
>> >> <installed some stuff>
>> >> starcluster ebsimage <ami id> myami
>> >>
>> >> Then I substituted the output ami id into the starcluster config file,
>> >> Node_IMAGE_ID = <myami id>
>> >>
>> >> and started up a cluster with my new ami
>> >> Finally I ran the createusers plugin (with the 30 users example).
>> >>
>> >> Problem:
>> >> I am able to connect as any of the new users with the ssh keys
>> >> automatically downloaded as a tarball; all is well.
>> >> But when I terminate and then restart a new instance of the cluster,
>> >> the .ssh directories are gone.  The userXXX directories are still
>> >> there but no more userXXX/.ssh.
>> >>
>> >> Is this supposed to be? What am I doing wrong?
>> >>
>> >>
>> >> Thanks,
>> >> ~Danny
>> >>
>> >> Arizona State University
>> >> School of Earth and Space Exploration
>> >> Low Frequency Cosmology
>> >> Phone:           (505) 500 4521
>> >> Homepage:     http://loco.lab.asu.edu/~jacobs/
>> >>
>> >> _______________________________________________
>> >> StarCluster mailing list
>> >> StarCluster_at_mit.edu
>> >> http://mailman.mit.edu/mailman/listinfo/starcluster
>> >
>>
>>
>>
>> --
>> ~Danny
>>
>> Arizona State University
>> School of Earth and Space Exploration
>> Low Frequency Cosmology
>> Phone:           (505) 500 4521
>> Homepage:     http://loco.lab.asu.edu/~jacobs/
>>
>> _______________________________________________
>> StarCluster mailing list
>> StarCluster_at_mit.edu
>> http://mailman.mit.edu/mailman/listinfo/starcluster

-- 
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Danny Jacobs
Dept. of Physics and Astronomy
University of Pennsylvania
209 South 33rd Street
Philadelphia, PA 19104-6396
-------------------------------------------------
Office:        Rittenhouse Lab - 1n2a
Phone:        (215) 280-7357
Fax:        (215) 898-2010
Homepage:     http://dannycjacobs.googlepages.com

Received on Wed May 16 2012 - 14:58:08 EDT