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datacenter/ucp/2.0/guides/monitor/index.md
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@ -65,6 +65,10 @@ If you're accessing this endpoint through a load balancer, you have no way to
know which UCP manager node is not healthy. So make sure you make a request
directly to each manager node.
## Monitoring disk usage
Web UI disk usage metrics, including free space, only reflect the Docker managed portion of the filesystem: `/var/lib/docker`. To monitor the total space available on each filesystem of a UCP worker or manager, you must deploy a monitoring solution, such as Prometheus Node Exporter.
## Where to go next
* [Troubleshoot your cluster](troubleshoot.md)