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Old 12-07-2004, 12:02 AM   #1
Registered: Jun 2004
Location: PAKISTAN
Posts: 46

Rep: Reputation: 15
Passwordless SSH for Cluster need help

Actually i m unable to achieve paswordless ssh. Without this i cannot successfully install MPICH.
What i have did
- server's /home is shared with the nodes
- kuser on a node has generated its key like
ssh-keygen -t dsa
which is saved in /home/kuser/.ssh of the node.
- now i have copied this key( to server's /root/.ssh/authorized_keys
scp /home/kuser/.ssh/ server:/root/.ssh/authorized_keys
- then i have restarted sshd....

Still password asking.. kindly solve

if rsh is easy to use for a cluster tell me that


Last edited by nedian123; 12-07-2004 at 12:30 AM.
Old 12-07-2004, 12:33 AM   #2
Registered: Jun 2001
Location: Up in the clouds
Distribution: Fedora et al.
Posts: 353

Rep: Reputation: 30
I can't remember the configuration options, but look in your ssh config file, you have to enable this option, it isn't enabled by default to my knowledge.

Old 12-07-2004, 12:59 AM   #3
Registered: Dec 2002
Location: Russia
Distribution: ASP linux
Posts: 94

Rep: Reputation: 15
Maybe it's because dsa is ssh version 2? Try this:
 scp /home/kuser/.ssh/ server:/root/.ssh/authorized_keys2
And, as it has been said, check the parameter
PubkeyAuthentication yes
in sshd_config

Last edited by shy; 12-07-2004 at 01:01 AM.
Old 12-07-2004, 10:15 PM   #4
Jerre Cope
Registered: Oct 2003
Location: Texas (central)
Distribution: ubuntu,Slackware,knoppix
Posts: 323

Rep: Reputation: 37

Remember, you must set authorized_keys to read only by owner

chmod 600 authorized_keys


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