docker/dtr backupEstimated reading time: 2 minutes
These are the docs for DTR version 2.4.5
To select a different version, use the selector below.
Create a backup of DTR
docker run -i --rm docker/dtr \ backup [command options] > backup.tar
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.
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.
This backup contains sensitive information and should be stored securely.
||$DEBUG||Enable debug mode for additional logs.|
||$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..|
||$DTR_EXTENDED_HELP||Display extended help text for a given command.|
||$UCP_CA||Use a PEM-encoded TLS CA certificate for UCP.Download the UCP TLS CA certificate from https://
||$UCP_INSECURE_TLS||Disable TLS verification for UCP.The installation uses TLS but always trusts the TLS certificate used by UCP, which can lead to man-in-the-middle attacks. For production deployments, use --ucp-ca “$(cat ca.pem)” instead.|
||$UCP_PASSWORD||The UCP administrator password.|
||$UCP_URL||The UCP URL including domain and port.|
||$UCP_USERNAME||The UCP administrator username.|