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Context: Modern Ubuntu server.

We have a certain host that should be known to all users on all machines. This is to avoid interactive prompt on first connect to it (which fails in non-interactive mode).

Is there a way to configure this OS-wide, without touching known-hosts of users?

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up vote 5 down vote accepted

Put the key in /etc/ssh/ssh_known_hosts. You can override this file with the /etc/ssh/ssh_config with the GlobalKnownHostsFile setting.

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