今天通过 scp 拷文件时出现以下ERROR，根据提示信息可能是出于安全方面原因，密钥发生改变。

报错信息

连接丢失，报错信息如下：

[postgres@skytf](mailto:postgres@skytf)-> scp *.ddl [postgres@192.168.1.35:/pgdata/uims_ppa/1921/data05/pg_bakcup](mailto:postgres@192.168.1.35:/pgdata/uims_ppa/1921/data05/pg_bakcup)  
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@  
@ 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  
d3:94:17:c4:69:6f:28:5e:8e:a9:88:0d:88:f4:5e:df.  
Please contact your system administrator.  
Add correct host key in /home/postgres/.ssh/known_hosts to get rid of this message.  
Offending key in /home/postgres/.ssh/known_hosts:2  
RSA host key for 192.168.1.35 has changed and you have requested strict checking.  
Host key verification failed.  
lost connection

解决方法

解决方法比较简单，只要删除ssh client 端文件 ~/.ssh/known_hosts 中对应记录信息即可。

[postgres@skytf](mailto:postgres@skytf)-> cd ~/.ssh  
[postgres@skytf](mailto:postgres@skytf)-> pwd  
/home/postgres/.ssh  
[postgres@skytf](mailto:postgres@skytf)-> ll  
total 20K  
-r-------- 1 postgres postgres 668 Jul 4 2011 id_dsa  
-r-------- 1 postgres postgres 642 Jul 4 2011 id_dsa.pub  
-r-------- 1 postgres postgres 1.7K Jul 4 2011 id_rsa  
-r-------- 1 postgres postgres 434 Jul 4 2011 id_rsa.pub  
-rw------- 1 postgres postgres 1.6K Mar 26 13:44 known_hosts

修改文件 known_hosts，删除对应IP记录信息即可。

192.168.1.35 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA2Xhr9XQXTLXp+61nQRelAsms1SDbZH31QX  
u+wK/fUNCGVgxXoqwIq/tf8Cg+MgJlVRvLb3HHGK5nTGFnda/b49ITVi/TCOwEurzTIjMRm+RpDOzMWEvZN  
SeNIOixcExi52D9Q3U1zebMG1U5ecxmzkvZMnwdOQpFvf9d1bGPbRY3+cn2i9yZr/ccJqTms+QMImV0VK35  
QOFIxHuDTLltkowewd8AuIwCytT+k7UqP7Pe+NYzWK5bReKJuvrQheGjmEpVD3uXoqyMRfl/SuDnUXFWIyP  
yfFO9NhHFT9NwM0GpiSyhCrS/oft5Ou+nmwpazYWYg0NAcMMjP1XjLOt38w==

备注：删除这条信息，重新 COPY 文件后不再报上述信息。

原创文章，作者：ItWorker，如若转载，请注明出处：https://blog.ytso.com/237838.html

SCP: WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

报错信息

解决方法

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SCP: WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

报错信息

解决方法

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