IP/key change for gitlab.haskell.org?

[Simon Jakobi]

Hi Richard,

Ben had pointed out this issue in
https://mail.haskell.org/pipermail/ghc-devs/2020-June/019000.html

On my system I used the command

    ssh-keygen -f "/home/simon/.ssh/known_hosts" -R gitlab.haskell.org

to remove the problematic key.

The next `git pull` then included a prompt to add the new key.

Cheers,
Simon

Am Do., 25. Juni 2020 um 12:41 Uhr schrieb Richard Eisenberg <rae at richarde.dev>:
>
> An innocent `git push` yielded this today:
>
> @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
> @       WARNING: POSSIBLE DNS SPOOFING DETECTED!          @
> @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
> The ED25519 host key for gitlab.haskell.org has changed,
> and the key for the corresponding IP address 139.178.85.33
> is unknown. This could either mean that
> DNS SPOOFING is happening or the IP address for the host
> and its host key have changed at the same time.
> @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
> @    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 ED25519 key sent by the remote host is
> SHA256:/dI7zsBRZNPB+0TqskF7rSaZ/LhQw0cF4c5W+4uMlRo.
> Please contact your system administrator.
> Add correct host key in /Users/rae/.ssh/known_hosts to get rid of this message.
> Offending ED25519 key in /Users/rae/.ssh/known_hosts:21
> ED25519 host key for gitlab.haskell.org has changed and you have requested strict checking.
> Host key verification failed.
>
> I know the server had a rough weekend. Is this a natural consequence, or is something fishy going on?
>
> Thanks,
> Richard
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