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47 lines
1.6 KiB
Markdown
47 lines
1.6 KiB
Markdown
---
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description: Backup a DTR cluster to a tar file and stream it to stdout
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keywords: docker, dtr, cli, backup
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title: docker/dtr backup
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---
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Backup a DTR cluster to a tar file and stream it to stdout
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## Usage
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```bash
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docker run -i --rm docker/dtr \
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backup [command options] > backup.tar
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```
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## Description
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This command creates a backup of configurations and image metadata, in a tar
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file. It can be used to make periodic backups of a DTR installation.
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This command only creates backups of configurations, and image metadata.
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It does not backup the Docker images stored in your registry.
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You should implement a separate backup policy for the Docker images stored
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in your registry, taking in consideration whether your DTR installation is
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configured to store images on the filesystem or using a cloud provider.
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WARNING: This backup contains sensitive information and should be
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stored securely.
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## Options
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| Option | Description |
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|:--------------------------|:---------------------------|
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|`--ucp-url`|Specify the UCP controller URL including domain and port|
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|`--ucp-username`|Specify the UCP admin username|
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|`--ucp-password`|Specify the UCP admin password|
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|`--debug`|Enable debug mode, provides additional logging|
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|`--hub-username`|Specify the Docker Hub username for pulling images|
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|`--hub-password`|Specify the Docker Hub password for pulling images|
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|`--ucp-insecure-tls`|Disable TLS verification for UCP|
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|`--ucp-ca`|Use a PEM-encoded TLS CA certificate for UCP|
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|`--existing-replica-id`|ID of an existing replica in a cluster|
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|`--config-only`|Backup/restore only the configurations of DTR and not the database|
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