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Full Discussion: Passwordless ssh
Top Forums UNIX for Advanced & Expert Users Passwordless ssh Post 302684455 by jim mcnamara on Thursday 9th of August 2012 03:15:58 PM
Old 08-09-2012
1. login into every server on the network. make keys. copy the keys to one location.
each key with a unique name
2. if you have 10 servers, you will need ten separate keys.
3. combine all those keys into one file with
Code:
cat keyfilename1 keyfilename2 ... keyfilename_last >> authorized_keys

4. copy that one authorized_keys file back to every server, into the .ssh directory.

The >> is there in case you decide to use an existing real authorized_keys file, otherwise just use >.
 

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dropbearkey(8)						      System Manager's Manual						    dropbearkey(8)

NAME
dropbearkey - create private keys for the use with dropbear(8) SYNOPSIS
dropbearkey -t type -f file [-s bits] [-y] DESCRIPTION
dropbearkey generates a RSA or DSS format SSH private key, and saves it to a file for the use with the dropbear(8) SSH 2 server. Note that some SSH implementations use the term "DSA" rather than "DSS", they mean the same thing. OPTIONS
-t type Type of key to generate. Must be one of rsa or dss. -f file Write the secret key to the file file. -s bits Set the key size to bits bits, should be multiple of 8 (optional). -y Just print the publickey and fingerprint for the private key in file. EXAMPLE
generate a host-key: # dropbearkey -t rsa -f /etc/dropbear/dropbear_rsa_host_key extract a public key suitable for authorized_keys from private key: # dropbearkey -y -f id_rsa | grep "^ssh-rsa " >> authorized_keys AUTHOR
Matt Johnston (matt@ucc.asn.au). Gerrit Pape (pape@smarden.org) wrote this manual page. SEE ALSO
dropbear(8), dbclient(1) http://matt.ucc.asn.au/dropbear/dropbear.html dropbearkey(8)
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