docker/dtr backup

Backup a DTR cluster to a tar file and stream it to stdout


$ docker run -i --rm docker/dtr \
 backup [command options] > backup.tar


This command creates a backup of configurations and image metadata, in a tar file. It can be used to make periodic backups of a DTR installation.

This command only creates backups of configurations, and image metadata. It does not 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.

WARNING: This backup contains sensitive information and should be stored securely.

Option Description
--ucp-url Specify the UCP controller URL [$UCP_URL]
--ucp-username Specify the UCP admin username [$UCP_USERNAME]
--ucp-password Specify the UCP admin password [$UCP_PASSWORD]
--debug Enable debug mode, provides additional logging [$DEBUG]
--hub-username Specify the Docker Hub username for pulling images [$HUB_USERNAME]
--hub-password Specify the Docker Hub password for pulling images [$HUB_PASSWORD]
--ucp-insecure-tls Disable TLS verification for UCP [$UCP_INSECURE_TLS]
--ucp-ca Use a PEM-encoded TLS CA certificate for UCP [$UCP_CA]
--existing-replica-id ID of an existing replica in a cluster [$DTR_EXISTING_REPLICA_ID]
--config-only Backup/restore only the configurations of DTR and not the database [$DTR_CONFIG_ONLY]


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