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I've done tons of search and tested different solutions, but gain no success!

When I want to push my codes, I receive the following error: 

Warning: the ECDSA host key for 'git.mywebsite.ir' differs from the key for the IP address '164.138.23.11'
Offending key for IP in /home/alireza/.ssh/known_hosts:10
Matching host key in /home/alireza/.ssh/known_hosts:1
Are you sure you want to continue connecting (yes/no)? yes

What should I do to remove this message every time I push my changes? Any idea?

key list

Alireza
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3 Answers3

149

It says:

Offending key for IP in /home/alireza/.ssh/known_hosts:10

So for some reason you have to delete 10-th line in known_hosts.

Run this command to delete 10-th line in known_hosts:

sed -i '10d' ~/.ssh/known_hosts

Or use ssh-keygen

ssh-keygen -R git.mywebsite.ir

Quote from man

 -R hostname
         Removes all keys belonging to hostname from a known_hosts file.
         This option is useful to delete hashed hosts (see the -H option
         above).
c0rp
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    ssh-keygen -R git.mywebsite.ir solved my problem. – Alireza Apr 26 '14 at 10:57
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    didn't work for me, it keeps on asking question. – Waruna Ranasinghe Sep 10 '14 at 19:45
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    sed -i '1d' ~/.ssh/known_hosts or manually removing the line no. did work for me – Sumit Kumar Saha Nov 30 '16 at 08:52
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    If you're running this in Terminal on a Mac, you'll have to do sed -i '' '10d' ~/.ssh/known_hosts to avoid the "extra characters at the end of l command" error because it requires an extension to be specified. – Luke May 15 '18 at 16:51
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    if you want to remove the key based on ip address: ssh-keygen -R [ipaddress]:port. example of removing key for 192.168.0.1 on port 3456: ssh-keygen -R [192.168.0.1]:3456 – Oki Erie Rinaldi Jun 05 '18 at 09:02
  • It wasnt working for me because there were 2 entries. One for the dns name and one for the ip address. You have to remove both – Marc Dec 05 '19 at 21:05
6

When I got the messages:

Offending key for IP in /home/myusername/.ssh/known_hosts:12

Notice the line number - in my case - 12

So open 'known_hosts' file and delete the 12-th row.

For me this solved the problem.

P.s. Notice if you cannot find the .ssh folder - the .ssh folder is hidden and in order to see it from the file manager - you have to "Show hidden files and folders". In Linux Mint (and possible in your distro too) when in the file manager - there is a shortcut to show/hide hidden folders -> Ctrl+H

Cheers

Combine
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0

You have to edit your known_hosts file (located in ~/.ssh/known_hosts) and remove an entry asociated with this address.

kulak
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  • This IP address does not exist in known_hosts file. – Alireza Apr 26 '14 at 09:54
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    That's right, there is probably an entry with git.mywebsite.ir URL and another IP address. You should remove this line from known_hosts and then new IP adress will be associated with this host name. – kulak Apr 26 '14 at 10:06
  • There is nothing as my site URL in known_hosts file. I cannot even find git in the file. Could you take a look at the picture above? – Alireza Apr 26 '14 at 10:14