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Getting started

Follow this "Hello, world!" example to learn the general workflow to install W&B Server for Dedicated Cloud and Self Managed hosting options. By the end of this demo, you will know how to host W&B Server on your local machine using a Trial Mode W&B license.

For demonstration purposes, this demo uses a local development server on port 8080 (localhost:8080).


Trial Mode vs. Production Setup

In Trial Mode, you run the Docker container on a single machine. This setup is ideal for testing the product, but it is not scalable.

For production work, set up a scalable file system to avoid data loss. W&B strongly recommends that you:

  • Allocate extra space in advance,
  • Resize the file system proactively as you log more data
  • Configure external metadata and object stores for backup.


Before you get started, ensure your local machine satisfies the following requirements:

  1. Install Python
  2. Install Docker and ensure it is running
  3. Install or upgrade the latest version of W&B:
    pip install --upgrade wandb

1. Pull the W&B Docker image

Run the following in your terminal:

wandb server start

This command pulls the latest W&B Docker image wandb/local.

2. Create a W&B account

Navigate to http://localhost:8080/signup and create an initial user account. Provide a name, email address, a username, and a password:

Click the Sign Up button to create a W&B account.


For this demo, create a new W&B account even if you already have a W&B account.

Copy your API key

After you create an account, navigate to http://localhost:8080/authorize.

Copy the W&B API key that appears on the screen. At a later step, you will need this key at a later step to verify your login credentials.

3. Generate a license

Navigate to the W&B Deploy Manager at to generate a Trial Mode W&B license.

  1. Select Docker as your provider
  2. Click Next.
  3. Select a license owner from the Owner of license dropdown.
  4. Click Next.
  5. Provide a name for your license in the Name of Instance field.
  6. (Optional) Provide a description about your license in the Description field.
  7. Click the Generate License Key button.

After you click Generate License Key, W&B redirects you to a Deployment License page. Within the Deployment License page you can view information about your license instance such as the Deployment ID, the organization the license belongs to, and more.


View a specific license instance in one of two ways:

  1. Navigate to the Deploy Manager UI and then click the name of the license instance.
  2. Directly navigate to a specific license instance at where DeploymentID is the unique ID assigned to your license instance.

4. Add trial license to your local host

  1. Within the Deployment License page of your license instance, click the Copy License button.
  2. Navigate to http://localhost:8080/system-admin/
  3. Paste your license into to License field.
  4. Click the Update settings button.

5. Check your browser is running the W&B App UI

Check that W&B is running on your local machine. Navigate to http://localhost:8080/home. You should see the W&B App UI in your browser.

6. Add programmatic access to your local W&B instance

  1. Navigate to http://localhost:8080/authorize to obtain your API key.
  2. Within your terminal, execute the following:
    wandb login --host=http://localhost:8080/
    If you are already logged into W&B with a different count, add the relogin flag:
    wandb login --relogin --host=http://localhost:8080
  3. Paste your API key when prompted.

W&B appends a localhost profile and your API key to your .netrc profile at /Users/username/.netrc for future automatic logins.

Add a volume to retain data

All metadata and files you log to W&B are temporarily stored in the directory.

Mount a volume, or external storage, to your Docker container to retain files and metadata you store in your local W&B instance. W&B recommends that you store metadata in an external MySQL database and files in an external storage bucket such as Amazon S3.


Recall that your local W&B instance (created using a Trial W&B License), uses Docker to run W&B in your local browser. By default, data is not retained if a Docker container no longer exists. Data is lost when a Docker process dies if you do not mount a volume at

For more information on how to mount a volume and for information on how Docker manages data, see Manage data in Docker page in the Docker documentation.

Volume considerations

The underlying file store should be resizable. W&B recommends that you set up alerts to inform you when you are close to reaching minimum storage thresholds so you can resize the underlying file system.


For enterprise trials, W&B recommends at least 100 GB free space in the volume for non-image/video/audio heavy workloads.

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