En alguna ocasión, hubo que migrar la información de una máquina a otra.
Una vez migrada, cuando trataba de conectarme vía ssh, me generaba el siguiente error
┌─[13:24:34] [dll ~/prueba]
└─> ¯\_(ツ)_/¯ssh root@192.168.248.17
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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 RSA key sent by the remote host is
65:73:16:28:83:b5:26:e2:df:33:2e:2f:f5:4e:cc:48.
Please contact your system administrator.
Add correct host key in /home/pad/.ssh/known_hosts to get rid of this message.
Offending RSA key in /home/pad/.ssh/known_hosts:50
RSA host key for 192.168.248.17 has changed and you have requested strict checking.
Host key verification failed.
┌─[13:24:37] [dll ~/prueba]
┌─[13:24:34] [dll ~/prueba]
└─> ¯\_(ツ)_/¯ssh root@192.168.248.17
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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 RSA key sent by the remote host is
65:73:16:28:83:b5:26:e2:df:33:2e:2f:f5:4e:cc:48.
Please contact your system administrator.
Add correct host key in /home/pad/.ssh/known_hosts to get rid of this message.
Offending RSA key in /home/pad/.ssh/known_hosts:50
RSA host key for 192.168.248.17 has changed and you have requested strict checking.
Host key verification failed.
┌─[13:24:37] [dll ~/prueba]
┌─[13:24:34] [dll ~/prueba] └─> ¯\_(ツ)_/¯ssh root@192.168.248.17 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 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 RSA key sent by the remote host is 65:73:16:28:83:b5:26:e2:df:33:2e:2f:f5:4e:cc:48. Please contact your system administrator. Add correct host key in /home/pad/.ssh/known_hosts to get rid of this message. Offending RSA key in /home/pad/.ssh/known_hosts:50 RSA host key for 192.168.248.17 has changed and you have requested strict checking. Host key verification failed. ┌─[13:24:37] [dll ~/prueba]
Para resolver este tema y podernos conectar a la máquina nuevamente, procedemos a eliminar la entrada en el archivo known_hosts que se encuentra en el directorio .ssh del usuario que ejecuta la orden ssh.
Lo haremos de la siguiente manera.
┌─[13:25:25] [dll ~/prueba]
└─> ¯\_(ツ)_/¯ssh-keygen -R 192.168.248.17
# Host 192.168.248.17 found: line 50 type RSA
/home/pad/.ssh/known_hosts updated.
Original contents retained as /home/pad/.ssh/known_hosts.old
┌─[13:25:33] [dll ~/prueba]
┌─[13:25:25] [dll ~/prueba]
└─> ¯\_(ツ)_/¯ssh-keygen -R 192.168.248.17
# Host 192.168.248.17 found: line 50 type RSA
/home/pad/.ssh/known_hosts updated.
Original contents retained as /home/pad/.ssh/known_hosts.old
┌─[13:25:33] [dll ~/prueba]
┌─[13:25:25] [dll ~/prueba] └─> ¯\_(ツ)_/¯ssh-keygen -R 192.168.248.17 # Host 192.168.248.17 found: line 50 type RSA /home/pad/.ssh/known_hosts updated. Original contents retained as /home/pad/.ssh/known_hosts.old ┌─[13:25:33] [dll ~/prueba]
De esta forma procedemos a conectarnos nuevamente y ya no nos aparecerá dicho mensaje de error.
┌─[13:26:11] [dll ~/prueba]
└─> ¯\_(ツ)_/¯ssh root@192.168.248.17
The authenticity of host '192.168.248.17 (192.168.248.17)' can't be established.
RSA key fingerprint is 65:73:16:28:83:b5:26:e2:df:33:2e:2f:f5:4e:cc:48.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.248.17' (RSA) to the list of known hosts.
root@192.168.248.17's password:
┌─[13:26:11] [dll ~/prueba]
└─> ¯\_(ツ)_/¯ssh root@192.168.248.17
The authenticity of host '192.168.248.17 (192.168.248.17)' can't be established.
RSA key fingerprint is 65:73:16:28:83:b5:26:e2:df:33:2e:2f:f5:4e:cc:48.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.248.17' (RSA) to the list of known hosts.
root@192.168.248.17's password:
┌─[13:26:11] [dll ~/prueba] └─> ¯\_(ツ)_/¯ssh root@192.168.248.17 The authenticity of host '192.168.248.17 (192.168.248.17)' can't be established. RSA key fingerprint is 65:73:16:28:83:b5:26:e2:df:33:2e:2f:f5:4e:cc:48. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '192.168.248.17' (RSA) to the list of known hosts. root@192.168.248.17's password:
Y eso es todo…..
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