Merge pull request #1267 from ollypom/dtrsysreqpatch

Added UCP Configuration to DTR System Requirements

ee/dtr/admin/install/system-requirements.md

@@ -44,6 +44,23 @@ node:
 
 These ports are configurable when installing DTR.
 
+## UCP Configuration
+
+When installing DTR on a UCP cluster, Administrators need to be able to deploy
+containers on "UCP manager nodes or nodes running DTR". This setting can be
+adjusted in the [UCP Settings
+menu](/ee/ucp/admin/configure/restrict-services-to-worker-nodes/). Once the
+installation has complete, and all additional DTR replicas have been deployed
+this UCP setting can be unchecked.
+
+The DTR installation will fail with the following error message if
+Administrators are unable to deploy on "UCP manager nodes or nodes running
+DTR".
+
+```
+Error response from daemon: {"message":"could not find any nodes on which the container could be created"}
+```
+
 ## Compatibility and maintenance lifecycle
 
 Docker Enterprise Edition is a software subscription that includes three products:

ee/ucp/admin/install/index.md

@@ -91,11 +91,6 @@ To install UCP:
 >[Install an unmanaged CNI plugin](/ee/ucp/kubernetes/install-cni-plugin/).
 {: important}
 
-3. Turn off scheduling on UCP managers and DTR nodes since it is on by default. Workloads cannot be run on manager nodes. 
-Make sure all options shown in the following screen shot are unchecked:
-
-    ![Scheduling options](../../images/scheduling-options.png){: .with-border}
-
 ## Step 5: License your installation
 
 Now that UCP is installed, you need to license it. To use UCP you are required to have a Docker Enterprise standard or advanced subscription, or you can test the platform with a free trial license.