On 9/8/21 9:26 AM, jbk wrote:
I am migrating my home file and backup server from SL 7 to Rocky 8 in a
dual boot arrangement. It serves three or four other notebooks and
workstation. The backup program (BackupPC) uses ssh on the client
machines to call rsync and transmit the backup data.
What I though I could do so that I didn't have to update the
"knownhosts" file on all machines was to substitute the public and
private keys on Rocky with those from SL 7 ( /etc/ssh). This did not
work, as I get the error fingerprint does not match from other machine.
I thought I had done this 10 years ago when I last upgraded the server.
Since then SSH has changed the allowed key types (dsa to escda) for
better encryption and I had to go through the process of updating the
keys and knownhost files on all the machines.
It is going to take me a while to get the backup server configured on
Rocky so I will be continuing to use SL 7 during this process.
Is it possible to substitute the keys on Rocky for those on SL 7?
I think you can either write a two line bash script to remove and add
the keys, or look at StrictHostKeyChecking.
Eric
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