docker/dtr backup
Estimated reading time: 2 minutesCreate a backup of DTR
Usage
docker run -i --rm docker/dtr \
    backup [command options] > backup.tar
Description
This command creates a tar file with the contents of the volumes used by DTR, and prints it. You can then use the ‘restore’ command to restore the data from an existing backup.
Note:
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This command only creates backups of configurations, and image metadata. It doesn’t backup users and organizations. Users and organizations can be backed up when performing a UCP backup.
It also doesn’t backup the Docker images stored in your registry. You should implement a separate backup policy for the Docker images stored in your registry, taking in consideration whether your DTR installation is configured to store images on the filesystem or using a cloud provider.
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This backup contains sensitive information and should be stored securely.
 
Options
| Option | Environment Variable | Description | 
|---|---|---|
--debug | 
      $DEBUG | Enable debug mode for additional logs. | 
--existing-replica-id | 
      $DTR_REPLICA_ID | The ID of an existing DTR replica.To add, remove or modify DTR, you must connect to an existing healthy replica’s database.. | 
--help-extended | 
      $DTR_EXTENDED_HELP | Display extended help text for a given command. | 
--ucp-ca | 
      $UCP_CA | Use a PEM-encoded TLS CA certificate for UCP.Download the UCP TLS CA certificate from https://         | 
    
--ucp-insecure-tls | 
      $UCP_INSECURE_TLS | Disable TLS verification for UCP.The installation uses TLS but always trusts the TLS certificate used by UCP, which can lead to man-in-the-middle attacks. For production deployments, use --ucp-ca “$(cat ca.pem)” instead. | 
--ucp-password | 
      $UCP_PASSWORD | The UCP administrator password. | 
--ucp-url | 
      $UCP_URL | The UCP URL including domain and port. | 
--ucp-username | 
      $UCP_USERNAME | The UCP administrator username. |