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Add notes about step 2 

Signed-off-by: Traci Morrison <traci.morrison@docker.com>
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Traci Morrison 2019-08-08 14:42:09 -04:00
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ee/dtr/admin/install/index.md
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@ -15,6 +15,12 @@ infrastructure meets the [system requirements](./system-requirements) that DTR n
## Step 2. Install UCP
>**Note:** Before installing DTR:
* When upgrading, upgrade UCP before DTR for each major version. For example, if you are upgrading four major versions, upgrade one major version at a time, first UCP, then DTR, and then repeat for the remaining three versions.
* UCP should be installed or upgraded to the most recent version before an initial install of DTR.
* Docker Engine should be updated to the most recent version before installing or updating UCP.
Since DTR requires Docker Universal Control Plane (UCP)
to run, you need to [install UCP](/ee/ucp/admin/install/) on all the nodes where you plan to install DTR.