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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 ## 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) 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. to run, you need to [install UCP](/ee/ucp/admin/install/) on all the nodes where you plan to install DTR.