Retrieve my ssh keys and generate

 

Navigate to your SSH directory

cd ~/.ssh

List the RSA public key files:

ls -l *.pub

View the Contents of Your RSA Public Key

cat id_rsa.pub

To generate a new SSH RSA key pair, you can use the following command

ssh-keygen -t rsa -b 4096

Thank you. marearts.com

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WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

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@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @

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IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!

Someone could be eavesdropping on you right now (man-in-the-middle attack)!

It is also possible that a host key has just been changed.

The fingerprint for the ECDSA key sent by the remote host is

...

simple solutin :

ssh-keygen -R <host>

Ex)

ssh-keygen -R 192.168.3.10
ssh-keygen -R ubuntu@ec2-30.30.30.eu-west-1.compute.amazonaws.com