On July 9th 8pm UTC, Drupal.org migrated to a redundant cluster of 2 servers. This provides failover in the event one server fails.
After the migration Host keys will change and your client might give an error message when pushing to Git. Consult your OS’s documentation on how to fix this error. For most operating systems, the following should remove the errors:
ssh-keygen -R git.drupal.org && ssh-keygen -R 126.96.36.199
If you have any questions please raise an issue in the infrastructure issue queue. https://www.drupal.org/project/issues/infrastructure?categories=All
You can follow the progress of the migration at http://twitter.com/drupal_infra
Update: migration was successful
Host keys have changed and your client might give an error message when pushing to Git. The new host key is:
2048 16:f5:44:6c:a1:c6:be:72:cd:98:b5:b7:7d:26:d6:14 git.drupal.org (RSA)