How to Set Up MEGASync on a TerraMaster NAS Using Docker

0. Motivation

In this guide, I’ll walk you through installing and configuring MEGASync on a TerraMaster NAS using Docker. This setup is particularly useful because TOS CloudSync doesn’t support MEGA, leaving users with limited options for seamless synchronization with MEGA cloud storage. Using Docker, you can overcome this limitation and enjoy a fully functional sync setup.

If you’re just starting with your TerraMaster NAS, I recommend checking out my previous post Setting Up and Optimizing a Terramaster NAS, where I cover the basics to get your device up and running. Once your NAS is set up, this guide will help you extend its functionality with MEGASync.

1. About TOS Paths

TerraMaster’s TOS handles user directories in a specific way that can sometimes cause confusion or issues with Docker containers. While user folders are displayed in TOS under /home/<username>, these directories are actually mapped internally to /Volume1/User/<username>. This discrepancy can lead to problems with Docker containers, particularly when they require consistent and predictable file paths.

2. Run the MEGASync Docker Container

You can set up MEGASync either via the terminal or by using Portainer. Choose the option that works best for you.

The Docker image we are using for this setup is ich777/docker-megasync, which provides a lightweight and reliable containerized version of MEGASync. Ensure you review the repository for the latest updates and additional configuration options.

You can use the following command to see which ports are free to use:

netstat -tuln | grep LISTEN

docker run -d \
  --name=megasync-<username> \
  -p 8081:8080 \
  --env 'DATA_DIR=/megasync/config' \
  --env 'CUSTOM_RES_W=1280' \
  --env 'CUSTOM_RES_H=720' \
  --volume "/home/<admin_username>/docker/Mmega/<username>:/megasync/config" \
  --volume "/Volume2/<username>_data:/sync-data" \
  --restart=always \
  ich777/megasync

Name: megasync-<username>
Image: ich777/megasync:latest
Network ports configuration:
  Manual network port publishing:
    host: 8081 # Change it
    container: 8080
Advanced container settings:
  Volumes:
    - container: /megasync/config
      type: bind
      host: /home/<admin_username>/docker/mega/<username>
    - container: /sync-data
      type: bind
      host: /Volume2/<username>_data
  Env:
    - name: CUSTOM_RES_W
      value: 1280
    - name: CUSTOM_RES_H
      value: 720
    - name: DATA_DIR
      value: /megasync/config
Restart Policy: Always

3. Access the MEGASync Web Interface

Once the container is running, access the MEGASync interface by opening your browser and navigating to:

http://<NAS_IP>:8081

You will see a user interface similar to what you would see on a desktop computer with MEGA installed:

Log in to your MEGA account and set up synchronization.

Once configured, you can access the settings anytime via the Mega icon on the “task bar”:

4. Verify the Setup

• Monitor the container logs to ensure there are no errors:

  docker logs megasync
  

• Test synchronization by adding files to /Volume2/<username>_data and confirming they appear in your MEGA account (and vice versa).

5. Adding Multiple Users

This setup is designed to work for multiple users. To sync another user, repeat the steps to run the Docker container. Use the new username in all relevant paths and container names. For example:

• Configuration Path: /home/<admin_username>/docker/mega/<new_username>
• Sync Data Path: /home/<new_username>
• Container Name: megasync-<new_username>
• Port: Use a different host port (e.g., 8082:8080) to avoid conflicts.

By doing so, each user will have their own isolated MEGAsync instance.

6. Troubleshooting

docker ps