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Top Forums Shell Programming and Scripting script for df output from multiple hosts Post 302147750 by Lakris on Wednesday 28th of November 2007 08:51:22 AM
Old 11-28-2007
1) Have You copied the copied the contents of Your local ~/.ssh/id_rsa.pub and added it to the remote machines /root/.ssh/authorized_keys? Maybe You've overwritten something? It is also necessary the create the public key with EMPTY password/passphrase. Otherwise You will still get a password prompt...

2) Once You get password-less login working, I would guess it would be sufficient with something like, let's say hostlist is a program that generates a list of the hosts You want to connect to:
Quote:
for x in `hostlist`; do
ssh root@$x 'hostname; df -k' >> /tmp/df.out
[[ ! $? = 0 ]] && echo Failure, errno $?, can not connect to host $x >>sshfailed.list
done
well, just a prototype anyway.
 

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SSH-COPY-ID(1)						      General Commands Manual						    SSH-COPY-ID(1)

NAME
ssh-copy-id - install your public key in a remote machine's authorized_keys SYNOPSIS
ssh-copy-id [-i [identity_file]] [user@]machine DESCRIPTION
ssh-copy-id is a script that uses ssh to log into a remote machine (presumably using a login password, so password authentication should be enabled, unless you've done some clever use of multiple identities) It also changes the permissions of the remote user's home, ~/.ssh, and ~/.ssh/authorized_keys to remove group writability (which would oth- erwise prevent you from logging in, if the remote sshd has StrictModes set in its configuration). If the -i option is given then the identity file (defaults to ~/.ssh/id_rsa.pub) is used, regardless of whether there are any keys in your ssh-agent. Otherwise, if this: ssh-add -L provides any output, it uses that in preference to the identity file. If the -i option is used, or the ssh-add produced no output, then it uses the contents of the identity file. Once it has one or more fin- gerprints (by whatever means) it uses ssh to append them to ~/.ssh/authorized_keys on the remote machine (creating the file, and directory, if necessary) SEE ALSO
ssh(1), ssh-agent(1), sshd(8) OpenSSH 14 November 1999 SSH-COPY-ID(1)
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