远程复制文件报错

tech2022-09-29 67

[root@centos7 data]# scp ./redhat-release.gpg root@10.0.0.8:/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 a host key has just been changed. The fingerprint for the ECDSA key sent by the remote host is SHA256:r4COfaGRW6a9yYrF2tQRnKeZbPJj1UKfJyBBfliBJPw. Please contact your system administrator. Add correct host key in /root/.ssh/known_hosts to get rid of this message. Offending ECDSA key in /root/.ssh/known_hosts:2 ECDSA host key for 10.0.0.8 has changed and you have requested strict checking. Host key verification failed. lost connection [root@centos7 data]#

查看上面的提示信息，提到了ECDSA 主机密钥已经改变了，需要重新验证；解决方法如下：

[root@centos7 ~]# cat .ssh/known_hosts 10.0.0.100 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBDZ 2U70/h64gLIwwkU/aDMNS3iojTZKjJEWJLhgYMR1UuzAZ0U8+2CET+LOSLNfzKwu/HsZ+RLVY1anKbl8GaoM= 10.0.0.8 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBAJAD BLVf9YypCk5SyI6SqsVLJ3sgSBR8LY7iC3kExg17RaybzCgxqQhEP7+RuOerMlgSJpBGmE/8dMBhC4cKMc=

删除对应的IP地址，即10.0.0.8的ECDSA：

重新连接生成ECDSA：

[root@centos7 ~]# scp /data/redhat-release.gpg 10.0.0.8:/data/ The authenticity of host '10.0.0.8 (10.0.0.8)' can't be established. ECDSA key fingerprint is SHA256:r4COfaGRW6a9yYrF2tQRnKeZbPJj1UKfJyBBfliBJPw. ECDSA key fingerprint is MD5:d5:15:30:7a:f6:d9:d6:4b:4d:e0:28:13:9b:ce:4f:ac. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '10.0.0.8' (ECDSA) to the list of known hosts. root@10.0.0.8's password: redhat-release.gpg 100% 85 60.0KB/s 00:00

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