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If you
want to move a host from one address to another, at least one
TTL before the move, reduce the TTL on the host's A
record and PTR record to a low number, like 60 seconds. For example,...
If you
need to add a host to DNS, add an
A and a PTR record for the host to the appropriate zones (which are
almost certainly two different zones: a forward-mapping and a
rever...
If you looked in /etc/ssh and didn't see any key files or you just want to create new host keys yourself, use ssh-keygen to create a new key pair. This must be done as root, and you have to specif...