---
description: Docker Trusted Registry upgrade command reference.
keywords:
- docker, registry, restore, upgrade
menu:
  main:
    identifier: dtr_reference_upgrade
    parent: dtr_menu_reference
title: upgrade
---

# docker/dtr upgrade

Upgrade a v2.0.0 or later cluster to this version of DTR

## Usage

```bash
docker run -it --rm docker/dtr \
    upgrade [command options]
```

## Description


This command upgrades an existing DTR 2.0.0 or later cluster to the current version of
this bootstrapper.


## Options

| Option                      | Description                                                                                                                         |
|:----------------------------|:------------------------------------------------------------------------------------------------------------------------------------|
| `--ucp-url`                 | Specify the UCP controller URL including domain and port                                                                            |
| `--ucp-username`            | Specify the UCP admin username                                                                                                      |
| `--ucp-password`            | Specify the UCP admin password                                                                                                      |
| `--debug`                   | Enable debug mode, provides additional logging                                                                                      |
| `--hub-username`            | Specify the Docker Hub username for pulling images                                                                                  |
| `--hub-password`            | Specify the Docker Hub password for pulling images                                                                                  |
| `--http-proxy`              | Set the HTTP proxy for outgoing requests                                                                                            |
| `--https-proxy`             | Set the HTTPS proxy for outgoing requests                                                                                           |
| `--no-proxy`                | Set the list of domains to not proxy to                                                                                             |
| `--replica-http-port`       | Specify the public HTTP port for the DTR replica; 0 means unchanged/default                                                         |
| `--replica-https-port`      | Specify the public HTTPS port for the DTR replica; 0 means unchanged/default                                                        |
| `--log-protocol`            | The protocol for sending container logs: tcp, udp or internal. Default: internal                                                    |
| `--log-host`                | Endpoint to send logs to, required if --log-protocol is tcp or udp                                                                  |
| `--log-level`               | Log level for container logs. Default: INFO                                                                                         |
| `--dtr-external-url`        | Specify the external domain name and port for DTR. If using a load balancer, use its external URL instead.                          |
| `--etcd-heartbeat-interval` | Set etcd's frequency (ms) that its leader will notify followers that it is still the leader.                                        |
| `--etcd-election-timeout`   | Set etcd's timeout (ms) for how long a follower node will go without hearing a heartbeat before attempting to become leader itself. |
| `--etcd-snapshot-count`     | Set etcd's number of changes before creating a snapshot.                                                                            |
| `--ucp-insecure-tls`        | Disable TLS verification for UCP                                                                                                    |
| `--ucp-ca`                  | Use a PEM-encoded TLS CA certificate for UCP                                                                                        |
| `--existing-replica-id`     | ID of an existing replica in a cluster                                                                                              |