How to SSH into a GCP VM: Simple Steps to Connect

To SSH into a GCP VM, use the gcloud compute ssh [INSTANCE_NAME] command from your terminal. This command connects you securely to your VM using your Google Cloud credentials and automatically manages SSH keys.

Syntax

The basic syntax to SSH into a GCP VM is:

• gcloud compute ssh [INSTANCE_NAME]: Connects to the VM named [INSTANCE_NAME].
• --zone [ZONE] (optional): Specifies the zone if your VM is not in the default zone.
• --project [PROJECT_ID] (optional): Specifies the GCP project if you have multiple projects.

bash

gcloud compute ssh [INSTANCE_NAME] --zone [ZONE] --project [PROJECT_ID]

Example

This example shows how to SSH into a VM named my-vm-instance located in the us-central1-a zone within the project my-gcp-project.

bash

gcloud compute ssh my-vm-instance --zone us-central1-a --project my-gcp-project

Output

WARNING: The authenticity of host '[35.233.123.45]:22 ([35.233.123.45]:22)' can't be established.
ECDSA key fingerprint is SHA256:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.
Are you sure you want to continue connecting (yes/no)? yes
Welcome to Ubuntu 20.04 LTS (GNU/Linux 5.4.0-1045-gcp x86_64)

To run a command as administrator (user "root"), use "sudo <command>".

my-vm-instance:~$

Common Pitfalls

Common mistakes when SSHing into a GCP VM include:

• Not specifying the correct --zone if your VM is in a non-default zone, causing connection errors.
• Not having the gcloud CLI installed or authenticated with gcloud auth login.
• Firewall rules blocking SSH (port 22) access to the VM.
• Using the wrong project ID if you have multiple projects.

Always check your VM's zone, project, and firewall settings before connecting.

bash

## Wrong: Missing zone when VM is not in default zone

gcloud compute ssh my-vm-instance

## Right: Specify zone

gcloud compute ssh my-vm-instance --zone us-central1-a

Quick Reference

Tips for smooth SSH access to GCP VMs:

• Use gcloud auth login to authenticate your user before SSH.
• Check your VM's zone with gcloud compute instances list.
• Ensure firewall rules allow TCP port 22.
• Use gcloud compute ssh for automatic SSH key management.

Key Takeaways

Use the gcloud CLI command 'gcloud compute ssh [INSTANCE_NAME]' to connect to your VM.

Always specify the correct zone with '--zone' if your VM is not in the default zone.

Authenticate with 'gcloud auth login' before attempting to SSH.

Ensure firewall rules allow SSH traffic on port 22.

Use 'gcloud compute instances list' to verify VM details before connecting.