Code-Hero: Troubleshooting

Code-Hero troubleshooting guide

👋 Welcome to the Stackhero documentation!

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• Code from anywhere: Use any device, be it a desktop, phone, or tablet, without requiring any software installations.
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• Seamless connectivity: Access your development applications via HTTPS on a public domain, mimicking production conditions. This setup supports webhooks and external integrations effortlessly.

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Resolving the error "REMOTE HOST IDENTIFICATION HAS CHANGED!" when trying to push

GitHub key error on a Code-Hero instance

If you encounter the error "REMOTE HOST IDENTIFICATION HAS CHANGED!" when interacting with GitHub (for example, when pushing your commits with git push), it is likely due to a change in GitHub's RSA private key. This update took place on 24 March 2023, after the key was exposed in a public repository. The change causes your machine to be unable to verify the host key using your current configuration.

Below is an example of the error message you might see:

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    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 RSA key sent by the remote host is
SHA256:uNiVztksCsDhcc0u9e8BujQXVUpKZIDTMczCvj3tD2s.
Please contact your system administrator.
Add correct host key in ~/.ssh/known_hosts to get rid of this message.
Offending RSA key in ~/.ssh/known_hosts
  remove with:
  ssh-keygen -f "~/.ssh/known_hosts" -R "github.com"
RSA host key for github.com has changed and you have requested strict checking.
Host key verification failed.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

To resolve this issue, you can follow these steps:

1. Remove the old key for the GitHub hostname:

   ssh-keygen -R "github.com"
   

2. Remove the old key for the GitHub IP address:

   ssh-keygen -R $(dig +short github.com)
   

3. Add the new key for GitHub:

   ssh-keyscan github.com >> ~/.ssh/known_hosts
   

Once these steps are completed, you should be able to interact with GitHub and push your code without encountering the error.