What steps should you follow to connect to your VM instance through SSH in Compute Engine?

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To connect to your VM instance through SSH in Google Cloud Platform's Compute Engine, you need to follow a series of steps. SSH (Secure Shell) is a cryptographic network protocol that allows secure communication between two devices over an insecure network. By connecting to your VM instance through SSH, you can remotely access and manage your virtual machine.

Here are the steps you should follow to connect to your VM instance through SSH:

1. Create a VM instance: First, you need to create a VM instance in Compute Engine. This involves specifying the machine type, boot disk image, and other configuration details. You can do this through the Google Cloud Console, the gcloud command-line tool, or the Compute Engine API.

2. Set up the SSH keys: SSH uses key pairs for authentication. To connect to your VM instance, you need to set up SSH keys. There are two types of SSH keys: project-wide SSH keys and instance-level SSH keys. Project-wide SSH keys are applied to all VM instances in a project, while instance-level SSH keys are specific to a particular VM instance.

– Project-wide SSH keys: You can add project-wide SSH keys in the Metadata section of the Compute Engine section in the Google Cloud Console. These keys will be applied to all VM instances in the project. You can also use the gcloud command-line tool to add project-wide SSH keys.

– Instance-level SSH keys: You can add instance-level SSH keys during the VM instance creation process or after the instance is created. In the Google Cloud Console, you can add instance-level SSH keys in the "SSH Keys" section of the instance details page. You can also use the gcloud command-line tool or the Compute Engine API to add instance-level SSH keys.

3. Connect to your VM instance: Once you have set up the SSH keys, you can connect to your VM instance through SSH. There are several methods you can use to connect:

– Using the Google Cloud Console: You can connect to your VM instance directly from the Google Cloud Console. Go to the Compute Engine section, select your VM instance, and click on the "SSH" button next to the instance name. This will open a browser-based SSH session.

– Using the gcloud command-line tool: You can use the gcloud command-line tool to connect to your VM instance. Open a terminal or command prompt, and run the following command:

     gcloud compute ssh [INSTANCE_NAME]

Replace [INSTANCE_NAME] with the name of your VM instance. This command will establish an SSH connection to your VM instance.

– Using an SSH client: If you prefer to use an SSH client, you can connect to your VM instance using its external IP address or hostname. Open your preferred SSH client and run the following command:

     ssh [USERNAME]@[EXTERNAL_IP_ADDRESS]

Replace [USERNAME] with the username you specified during VM instance creation and [EXTERNAL_IP_ADDRESS] with the external IP address of your VM instance. This will establish an SSH connection to your VM instance.

4. Authenticate using SSH keys: When you connect to your VM instance through SSH, you will be prompted to authenticate using your SSH keys. If you set up your SSH keys correctly, the authentication will be successful, and you will be logged into your VM instance.

Once you are connected to your VM instance through SSH, you can execute commands, manage files, install software, and perform various administrative tasks.

To connect to your VM instance through SSH in Compute Engine, you need to create a VM instance, set up SSH keys (project-wide or instance-level), and then connect using the Google Cloud Console, the gcloud command-line tool, or an SSH client. SSH keys provide secure authentication, allowing you to remotely access and manage your VM instance.

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