Updating the Autoscaling Script Dependency from prom-client to @prometheus-io/client

Prerequisites

• You must have an active Front End Hosting - Advanced environment with autoscaling implemented before October 16, 2026.

• You must have access to the root directory of your Node.js code branch.

• You must have permission to install and remove packages in your Node.js repository.

Customer Action

1. Update the acquia-autoscaling.js script

   1. Download the latest version of the script. For details, visit Implementing autoscaling.

   2. Add the script to the root directory of your code branch.

   3. Select the ES5 or ES6 version that matches your project.

2. Remove the old package

   1. Run the following command in your Node.js repository root:

      copy

      npm uninstall prom-client

   2. Verify that prom-client is removed from the dependencies section of your package.json file.

3. Install the replacement package

   1. Run the following command:

      copy

      npm install @prometheus-io/client

   2. Verify that @prometheus-io/client is listed under in your file.

Additional Information

• Getting Started – Implementing autoscaling
• Front End Hosting - Advanced release notes – October 16, 2026