今天用scp传输文件遇到如下报错:

root@localhost.localdomain:[/root/.ssh]scp -r ~/.ssh/id_rsa.pub root@10.9.10.1:/root
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    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 the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
ff:76:bf:06:23:b9:f3:4f:e9:90:55:f6:db:18:41:09.
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
Offending key in /root/.ssh/known_hosts:3
RSA host key for 10.9.10.1 has changed and you have requested strict checking.
Host key verification failed.
lost connection

解决办法如下:

先查看下这个文件内容cat ~/.ssh/known_hosts
10.1.67.201 ssh-dss AAAAB3NzaC1kc3MAAAEBAPmCkhbuGasPVXvZBIp1R6NpNEh0e4zfUkaxeCfXzeZD7klYmxOYdWyisaFeKfbj4L3pdDRmx9cdhlOJAwT4KAhOLEJpMK3atisxUkyWCLbHPcnlU1nyRTWG2Yu7Y5I
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.7.3.216 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAsxHo1PVfyveb6tqmq8ArKmOmZPz3xXVb4y45JzIcHfM4GB7GEkUWBkOSPcpZ2nTuL0Ht8/UGStioZfDh8nsvCQgmt2PCrRKSEdJRz9ZWF70nMRxVOvj3uCZn
T8JsK8QJBvblCiUI033rCk+OP+/lyJ2RgejgupvuPMXbtz5v98xRwlmCGjPW4gdNM0tYjz32gYGzCucZZ6IaMPJhSFbfkhKwKIXwlCR9b9BFKvvhclVOrmN2otJkM0P+pPasOBrYYyzIat43AA5dyTf4a5WEW/+QthGEh818ibXXkxnBXQDHy+cUpTn7VRJK3tLl/Wf73OucG8ijp3H0WdPp1+kS7w==10.9.10.1 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAIEAwqD+Ev2oG9IC5w1fLkiKdYv64h7zw8swwkZHheeg8/8W+lNc0SGs5DvCE7r9hcSGkb/9Fhcs/4fP3oMOkw0GCExytFzB+fK66IygCn68yJ4jlB39wrhkJflu3
70migZfvHuS0Voa6UBp9OZWtzySmTwxBZ43w4dzoSppiOS5pY0=10.9.6.76 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAzaeORy6zpxZiofkrmazmcLo1yVMrjYEYNxdpDbzDIBlreshxGiYugYGD3o7tWPUmY0WM4+Pzm5QPUJQQvx6KSyUfQwb0WuRYFsPOdwlcMSWUryqhCpFVhnQqH
EnonwUANmFsEQBNOaDoVL5s/3qoIK6KxmFWNlvYgICcOgnmyTOSNUsTfoBnjptI8Pg84jEarcircSbNCPizpmQzZgmead1yRD6PJQWbly9gN4IOFZBGRXDtQ/xdUVk8ZBKfkf1rMA0LdqWBuD/LyWZ4+UoocQB6Ki3KD68xwRPnAm1/IXL8x79HgJJcZa+X4SNh8NeboxiozypSeommZ2OSryliaQ==10.1.14.228 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAqOM7gz/TZV5QNwloslZJOu0zir7yp2+7BG4h3VHbrM0ytG0SYHIeT3tApzDU/PnCK4k9YqxJs0crg6C0DdoAeViYBdQrZ4zmO0tD9qO4+os6fN5w9GWMl+D
1fvNW9dudxkf9UHrTbA30A+dEpNBCS7PXQ2uBYTXPOV/oRCIQ3bi0hrVbMtCJb/XM4TnEgNJXc823pvLIfVxXzbkvsEa/LrqBjHoS63+n0ZTzC1SjEZT2l1waUW/FxU9XT1eMUU9Hif59tbx+YGkbBkz7miZL0wLfVU805zRvBb6ThgJVn/VMJGAUhFJvkXoCYXodaFm70V4dQFxIK04c94VOWxq0/Q==10.1.14.202 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAxK6rQLOCbtJw8JfcPg8zimGEXEdN6ECMBLdkVgNPyqShihlh0LaMtS0yxwLhBAYq1a8tec9DWLnl+if/cogBov/uIHZYjMU6xAPSmw6Rr1XW2q2T622YuoF
mVhmdZBoKj81PglsJHvzIReWnXmMtZfqrEELL7ydXUiFSYPyWiPZtJdce6xQgp6Eej9qgKxYXspbN4jth2pxJzF2fcwkzqbj36+OSMK6G4sqZfTRghXVl3cdkRf1u/fTKprwAYlnHFjDS+huxYZmRtoWzBVFuCdbG1+CBAT9fnCJwbvPa4IwewV4SmiAmsEDG8l9S6DKdJJYX0ga3OrYP+X6zlTLbCQ== 

编辑此文件vim ~/.ssh/known_hosts

删除10.1.1.61的相关rsa的信息即可.