How to replace fileserver so as not to reconfigure ssh keys?

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Harbid Abu Marhamedoff2019-02-09 22:28:54

SSH

Harbid Abu Marhamedoff, 2019-02-09 22:28:54

There is a server from which there is replication to other servers using rsync over ssh. There was a need to rearrange and replace it so as not to break the replication process. In addition to replication via ssh, nothing is involved there. Will it be enough to copy all the contents of /etc/ssh from the old server to the new one, change ip and reboot the new server so that clients connect to it and continue working without questions about the changed server?

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3 answer(s)

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Dimonchik, 2019-02-09
@dimonchik2013

well, the keys are usually in user dirs, so it's not enough

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pfg21, 2019-02-09
@pfg21

read man ssh the FILES section describes which files are used for keys.
well, man ssh_config if the system is being knocked on.
save them and deploy to a new server.

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Saboteur, 2019-02-10
@saboteur_kiev

If the IP does not change, then it will be enough to save the host keys (/etc/ssh/ssh_host_*) and the actual keys of the users under which your replication takes place.