[Beowulf] Passwordless ssh - strange problem

laytonjb at charter.net laytonjb at charter.net
Fri Sep 14 13:21:37 EDT 2007


James,

I'm not an ssh expert and I don't play one on TV and I can't get the logs to
this system where I'm emailing so I will have to type in here.

...
debug1: Authentications that can continue: publickey,gssapi-with-mic,password
debug1: Next authentication method: publickey
debug1: Trying private key: /home/panasas/.ssh/identity
debug1: Offering public key: /home/panasas/.ssh/id_rsa
debug1: Authentications that can continue: publickey,gssapi-with-mic,password
debug1: Trying private key: /home/panasas/.ssh/id_dsa
debug1: Next authentication method: password
<prompts me for my password>

So it looks like it doesn't like my id_rsa key? Should I also create a dsa key
combination and add the public to authorized_keys.

Thanks!

Jeff

 Bardin <jbardin at bu.edu> wrote: 
> Hi Jeff,
> 
> Did you specify the key on the command line (-i .ssh/id_rsa), or load it 
> into an agent with shh-add?
> 
> You can make sure you're sending the key by increasing the verbosity 
> (-v), and check the logs on the clients. sshd will log why it rejected a 
> key for authentication.
> 
> The permissions should be 600
> 
> -jim
> 
> laytonjb at charter.net wrote:
> > Afternoon cluster party goers,
> >
> > I'm having trouble on a cluster with passwordless ssh. I followed all the
> > steps (I think). On the head node, I generated the public and private
> > keys and then copied id_rsa.pub to authorized keys. Then I tried
> > logging into compute nodes and it asks for my password every time
> > (regardless of the number of times I log into the node). I've tried changing
> > the permissions on authorized_keys a few times (600, 644) and that
> > doesn't seem to change the behavior. Any ideas?
> >
> > Thanks!
> >
> > Jeff
> >
> > _______________________________________________
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> >   
> 
> -- 
> 
> /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
> James Bardin - Systems Analyst / Administrator I
> Boston University Department of Electrical and Computer Engineering
> 8 Saint Mary's St, Room 305, Boston, MA 02215
> Ph:617-358-2785         http://www.bu.edu/ece/it
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