Ok guys,<br><br>Aparently you didn't understood me, the server hasn't been configured to allow ssh without a password, to change that i must be root, and i don't have the permissions because it's the school computers that i'm talking about. And i believe that i'm not the only one in this position, so just put this solution in the faq or something like that, instead of trying to teach me how to make ssh work without a password.<br>
<br>From <a href="http://www.debian-administration.org/articles/152">http://www.debian-administration.org/articles/152</a> :<br><p>There are three common problems when setting up passwordless logins:</p>
<ul><li>The remote SSH server hasn't been setup to allow public key
authentication.</li><li>File permissions cause problems.</li><li>Your keytype isn't supported.</li></ul>
<p>Each of these problems is easily fixable, although the first will
require you have root privileges upon the remote host.</p>
<p>If the remote server doesn't allow public key based logins you will
need to updated the SSH configuration. To do this edit the file <tt>/etc/sshd/sshd_config</tt>
with your favourite text editor.</p>
<p>You will need to uncomment, or add, the following two lines:</p>
<pre>RSAAuthentication yes<br>PubkeyAuthentication yes<br></pre><br><br><div class="gmail_quote">On Sat, Jun 5, 2010 at 5:00 PM, Reuti <span dir="ltr"><<a href="mailto:reuti@staff.uni-marburg.de">reuti@staff.uni-marburg.de</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Hi,<br>
<br>
Am 05.06.2010 um 16:36 schrieb Pavan Balaji:<div class="im"><br>
<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
You need to setup passwordless ssh on your system, as described in the README. You can google for "passwordless ssh" to figure out how to do that.<br>
<br>
Btw, there's not going to be a next version of MPD -- in the MPICH2 1.3.x series, we have moved to a new process manager called Hydra. But that still requires a passwordless ssh.<br>
</blockquote>
<br></div>
instead of using passphraseless ssh-keys, I prefer hostbased-authorization in a cluster:<br>
<br>
<a href="http://gridengine.sunsource.net/howto/hostbased-ssh.html" target="_blank">http://gridengine.sunsource.net/howto/hostbased-ssh.html</a><br>
<br>
Maybe this option could also be mentioned somewhere at Open MPI besides using passphraseless ssh-keys.<br><font color="#888888">
<br>
-- Reuti</font><div><div></div><div class="h5"><br>
<br>
<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
-- Pavan<br>
<br>
On 06/05/2010 09:32 AM, Swatch Puppy wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Hello all,<br>
I've been trying to setup a cluster in my university labs, but i can't do ssh to the others computers without password. This is a problem if mpdboot is used to start up the mpd ring, because it will asks for a lot of passwords at the same time.<br>
So I've edited the mpdboot python file and added *mpd.wait()* in line 361 for mpich2 1.0.6, and 375 for mpich2 1.2.1p1, just after *mpd = Popen4(cmd,0)*, in this way it will ask a password per connection sequentially.<br>
Hope that this can help someone, or affect change in the next version of mpdboot.<br>
The best regards,<br>
SwatchPuppy<br>
------------------------------------------------------------------------<br>
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</blockquote>
<br>
-- <br>
Pavan Balaji<br>
<a href="http://www.mcs.anl.gov/%7Ebalaji" target="_blank">http://www.mcs.anl.gov/~balaji</a><br>
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