Hey Kevin, totally get the frustration here—SageMaker instances run in a private VPC environment, so accessing localhost directly like you do locally won't work. Let's walk through the most reliable ways to get your browser connected to that RStudio IDE running on port 8787:

Method 1: Use SageMaker Studio's Built-in Port Forwarding (Recommended for Studio Users) #

If you're working within SageMaker Studio, this is the simplest approach:

1. Launch your SageMaker Studio environment and open a terminal connected to your running instance.
2. Run your Docker command (add a password for RStudio login while you're at it):

   docker run --rm -p 8787:8787 -e PASSWORD=your-secure-password rocker/verse
   

3. At the top of the Studio interface, click Connections > Port Forwarding.
4. In the popup, enter 8787 as the port number, then click Connect.
5. A new browser tab will open with access to your RStudio IDE—use rstudio as the username and the password you set earlier to log in.

Method 2: SSH Port Forwarding (For Standalone SageMaker Notebook Instances) #

If you're using a standalone SageMaker Notebook Instance, an SSH tunnel will let you forward the instance's port to your local machine:

1. First, make sure your SageMaker instance's security group allows inbound SSH traffic (port 22) from your local IP address.
2. On your local machine, open a terminal and run this SSH command (replace placeholders with your details):

   ssh -i "your-key-pair.pem" -L 8787:localhost:8787 ec2-user@<your-sagemaker-instance-public-ip>
   

   • your-key-pair.pem: The path to the AWS key pair associated with your SageMaker instance.
   • <your-sagemaker-instance-public-ip>: Find this in the EC2 Console under your SageMaker instance details.
3. Keep the SSH connection open, then open your local browser and navigate to http://localhost:8787. Use rstudio as the username and the password you set in your Docker command.

Method 3: Direct Public Access (Not Recommended) #

While technically possible, exposing port 8787 directly to the internet carries security risks. If you still need to do it:

1. Assign an Elastic IP to your SageMaker instance via the EC2 Console.
2. Update your instance's security group to add an inbound rule allowing traffic on port 8787 (restrict the source to your local IP for better security).
3. Run your Docker command with the port bound to all interfaces:

   docker run --rm -p 0.0.0.0:8787:8787 -e PASSWORD=your-secure-password rocker/verse
   

4. Access RStudio via http://<your-elastic-ip>:8787 in your browser.

Quick Notes #

• Always set a strong password for RStudio using the -e PASSWORD= flag—rocker/verse requires this for login.
• Double-check your Docker command binds to all interfaces (0.0.0.0) if you're using methods 2 or 3, though the default rocker/verse image usually listens on all interfaces already.

内容的提问来源于stack exchange，提问作者Kevin Burnham