Linux Server

Fix “Remote Host Identification Has Changed” Error

While trying to connect to remote CentOS server through SSH from local CentOS server, I encounter the following error,

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@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
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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
" ".
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:1
RSA host key for yourserver.net has changed and you have requested strict checking.
Host key verification failed.

Prior to this I don’t have this issue. This problem happen because I re-install the OS of the remote server.

To fix the error simply editing “/root/.ssh/known_hosts” in the local server. You just need to remove the reference of the remote server. After saving the file the error should be gone.

Another method to fix is just by deleting “/root/.ssh/known_hosts” file

Redirect Only Root Directory or Index Page with .htaccess

Previously, we looked at on how to Redirect Everything Except Root Page with .htaccess.

I have another domain where I need to redirect only root directory or index of the domain but not the sub-directory. You may need this is you have cPanel & you need to redirect the main domain without affecting your add-on domain.

To do this, I have to edit the .htaccess file in the root domain & add the following code. Remember to replace “yourolddomain” & “yournewdomain” with your domain name before using it.

RewriteEngine on
RewriteCond %{HTTP_HOST} yourolddomain\.com [NC]
RewriteCond %{REQUEST_URI} ^/$
Rewriterule ^(.*)$ http://yournewdomain.com/ [L,R=301]