docker/dtr backup
Estimated reading time: 2 minutesCreate a backup of DTR
Usage
docker run --log-driver none -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 back up users and organizations. Users and organizations can be backed up when performing a UCP backup.
It also doesn’t back up 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. |
--enzi-ca |
$ENZI_TLS_CA | Use a PEM-encoded TLS CA certificate for Enzi. |
--enzi-insecure-tls |
$ENZI_TLS_INSECURE | Disable TLS verification for Enzi. |
--existing-replica-id |
$DTR_REPLICA_ID | The ID of an existing DTR replica. To safely remove a DTR replica from the cluster, the remove command needs to notify a healthy replica about the replica that’s about to be removed. |
--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. |