---
title: Monitor Docker Trusted Registry
description: Learn how to monitor your DTR installation.
keywords: registry, monitor, troubleshoot
---

Docker Trusted Registry is a Dockerized application. To monitor it, you can
use the same tools and techniques you're already using to monitor other
containerized applications running on your cluster. One way to monitor
DTR is using the monitoring capabilities of Docker Universal Control Plane.

In your browser, log in to **Docker Universal Control Plane** (UCP), and
navigate to the **Stacks** page.
If you have DTR set up for high-availability, then all the DTR replicas are
displayed.

![](../../images/monitor-1.png){: .with-border}

To check the containers for the DTR replica, **click the replica** you want
to inspect, click **Inspect Resource**, and choose **Containers**.

![](../../images/monitor-2.png){: .with-border}

Now you can drill into each DTR container to see it's logs and find the root
cause of the problem.

![](../../images/monitor-2.png){: .with-border}

## Health checks

DTR also exposes several endpoints you can use to assess if a DTR replica
is healthy or not:

* `/_ping`: Checks if the DTR replica is healthy, and
returns a simple json response. This is useful for load balancing or other
automated health check tasks.
* `/nginx_status`: Returns the number of connections being handled by the
NGINX front-end used by DTR.
* `/api/v0/meta/cluster_status`: Returns extensive information about all DTR
replicas.

## Where to go next

* [Troubleshoot with logs](troubleshoot-with-logs.md)
