(DOCSP-14331): app db must use persistent volumes (#510)

* (DOCSP-14331): app db must use persistent volumes

* (DOCSP-14331): tech review feedback

Author: jwilliams-mongo

source/includes/steps-deploy-k8s-opsmgr-http.yaml

@@ -138,13 +138,14 @@ content: |
           | ``.applicationDatabase``
           | ``.``:setting:`~spec.persistent`
         - boolean
-        - *Optional.*
-
-          Flag indicating if this |k8s-mdbrsc| should use |k8s-pvs| for
+        - Flag indicating if this |k8s-mdbrsc| should use |k8s-pvs| for
           storage. Persistent volumes are not deleted when the
           |k8s-mdbrsc| is stopped or restarted.
 
-          If this value is ``true``, then
+          .. important::
+
+             You must set this value to ``true``.
+
           ``spec.applicationDatabase.podSpec.persistence.``
           :setting:`~spec.podSpec.persistence.single`
           is set to its default value of ``16Gi``.

source/includes/steps-deploy-k8s-opsmgr-https.yaml

@@ -243,13 +243,14 @@ content: |
           | ``.applicationDatabase``
           | ``.``:setting:`~spec.persistent`
         - boolean
-        - *Optional.*
-
-          Flag indicating if this |k8s-mdbrsc| should use |k8s-pvs| for
+        - Flag indicating if this |k8s-mdbrsc| should use |k8s-pvs| for
           storage. Persistent volumes are not deleted when the
           |k8s-mdbrsc| is stopped or restarted.
 
-          If this value is ``true``, then
+          .. important::
+
+             You must set this value to ``true``.
+
           ``spec.applicationDatabase.podSpec.persistence.``
           :setting:`~spec.podSpec.persistence.single`
           is set to its default value of ``16Gi``.

source/tutorial/plan-om-resource.txt

@@ -66,6 +66,13 @@ database or :term:`sharded cluster`. If you have concerns about
 performance or size requirements for the Application Database, contact
 `MongoDB Support <https://support.mongodb.com/welcome>`__.
 
+.. important::
+
+   The Application Database must use |k8s-pvs|. When you
+   :ref:`deploy-om-container`, ensure that you set
+   ``spec.applicationDatabase.``
+   :setting:`~spec.persistent` to ``true``.
+
 Monitoring
 ++++++++++