On Thu, 2004-04-22 at 15:54 -0400, Mike Branda wrote:
> To all the programming hero's, I have a bank of 50 redhat 8.0 animation
> rendering machines that occasionally need to be restarted due to a loss
> of connection to a samba share and a few other things. I've created a
> simple shell script that ssh's into the farm boxes, and fires off the
> restart command, but when I run the script, of course it asks for the
> user password at each machine. after the password is entered, it runs
> the rest of the script (i.e. the shutdown command) in the background and
> proceeds to ask me for each and every password down the line. is there
> a way to enter the password once at the beginning and store it as a
> response to the rest of the machines? or just store it period and I'll
> give the script root only privileges. it's lousy having to enter 50 of
> the same password.
What you need to eliminate the ssh password is a simple little program
from the Linux Userland File System called 'lussh'. What the little
program does for you is really pretty simple. It adds your public key to
the ~/.ssh/authorized_keys file. which essential tells the sshd server
to trust the system with that public key.
I suppose one of the craftier linux dieties will chime in about how you
can do this in a 3 line perl script.
Here is the Linux Userland File System
websitehttp://lufs.sourceforge.net/
> austin@bender austin $ lussh
>
> This script will help you setup ssh public key authentication.
> SSH server: testserver
> user[username]:
> Setting up RSA authentication for username@testserver...
> RSA public key OK.
> id_rsa.pub 100% 239 0.2KB/s 00:00
>
> You should see the following message without being prompted for anything now...
>
> !!! Congratulations, you are now logged in as username@testserver !!!
>
> If you were prompted, public key authentication could not be configured...
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