SSH連線出現錯誤 WARNING REMOTE HOST IDENTIFICATION HAS CHANGED

由 Derek 發表於 十一月 22, 2011 / 尚無評論

當在使用SSH連線到別台主機時,有時會出現以下錯誤。若是有此錯誤的話。可參考以下解決方式。

 

錯誤訊息

[root@localhost ~]# ssh 192.168.2.151 

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

@    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

7e:68:8c:e5:09:9f:0d:5f:a4:47:07:a5:69:24:9a:bf.

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:33

RSA host key for 192.168.2.151 has changed and you have requested strict checking.

Host key verification failed.

有幾種處理方式(選適合的)

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執行yum 錯誤訊息Error: Cannot find a valid baseurl for repo: addons

由 Derek 發表於 九月 16, 2011 / 尚無評論

 

執行YUM時出現以下錯誤訊息 :

[root@localhost ~]# yum -y install net-snmp

Loaded plugins: fastestmirror

Determining fastest mirrors

Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=5&arch=x86_64&repo=addons error was

[Errno 4] IOError: <urlopen error (-3, 'Temporary failure in name resolution')>

Error: Cannot find a valid baseurl for repo: addons

 

當出現以上的錯誤後,請先試著Ping mirrorlist.centos.org,發現ping不通,出現 ping: unknown host mirrorlist.centos.org 的訊息。

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