You're viewing the documentation for the experimental version of Vagrant (the 1.x series). The current stable series is 1.0.x and the documentation can be found here. You can learn more about the Vagrant versioning scheme here.
Configuration key: config.ssh.private_key_path
Default value: nil
This is the path to the private key file used for SSH authentication. Vagrant only supports publickey-based authentication for SSH. If this value is a relative path, then it will be expanded relative to the location of the main Vagrantfile. If this value is nil
, then the default insecure private key that ships with Vagrant will be used.