The private key works as a password and should be kept safe. Private key and public key of SSH are used to validate and establish an encrypted communication between a client and a remote machine over the internet.

Using SSH keys with Ansible for secure server management is a common practice. Ansible allows you to automate server management tasks and configure multiple servers simultaneously, and using SSH keys adds an extra layer of security by eliminating the need to use passwords for authentication.

The warning "WARNING: UNPROTECTED PRIVATE KEY FILE!" typically occurs when the permissions on the private key file used for SSH authentication are set too permissive. If the permissions are too relaxed, SSH may refuse to use the key file for security reasons.

If you are experiencing an issue where you are still being prompted for a password and passphrase when trying to connect to GitHub using SSH, there could be a few potential reasons for this. Here are some troubleshooting steps you can follow:

When using the git clone command, you can specify the private SSH key to use by configuring the SSH agent or by directly specifying the key using the ssh-add command.

When you encounter the error message "permissions are too open" while using SSH, it means that the permissions on certain files or directories are too permissive, potentially compromising the security of your system.

SSH Key is an access credential for the SSH network protocol. SSH is used for remote file transfer, network management, and remote operating system access. The tls_private_key resource is used to create a SSH key in Terraform.