How can the Docker data directory be migrated?

1 year ago
Jackson Davis
1 minute

To migrate the Docker data directory, you can follow these steps:

  1. To stop Docker services, you can use the following command:
sudo systemctl stop docker
  1. the path where the Docker containers are stored
sudo cp -a /var/lib/docker /path/to/new/location
  1. The configuration file located in /etc/docker/daemon.json
  2. root data
sudo nano /etc/docker/daemon.json

Add the following content to the file:

{
  "data-root": "/path/to/new/location/docker"
}

Make sure to replace /path/to/new/location/docker with the actual path to the new data directory.
4. Restart the Docker service: Restart the Docker service using the following command:

sudo systemctl start docker
  1. Validate the migration of data directories: Run some Docker commands to confirm the successful migration of data directories, such as:
docker ps

If Docker is functioning properly and displays a list of running containers, it indicates that the data directory has been successfully migrated.

Please be aware that migrating the Docker data directory may result in the loss of existing containers, images, and data. Therefore, before proceeding with the migration, make sure to backup all essential containers and data.

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