Add procedure for creating a DRBD cluster resource (#353)

And adjust crm steps for earlier versions

bsc#1211587
jsc#DOCTEAM-998

xml/ha_drbd.xml

@@ -174,7 +174,7 @@ NAME       SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE
    <title>Adjustments Needed</title>
    <para>
     The following procedure uses the server names &node1; and &node2;,
-    and the cluster resource name <literal>r0</literal>. It sets up
+    and the DRBD resource name <literal>r0</literal>. It sets up
     &node1; as the primary node and <filename>/dev/disk/by-id/example-disk1</filename> for
     storage. Make sure to modify the instructions to use your own nodes and
     file names.
@@ -742,6 +742,45 @@ r0 role:Primary
         </step>
     </procedure>
   </sect2>
+  <sect2 xml:id="sec-ha-drbd-configure-cluster-resource">
+   <title>Creating Cluster Resources for DRBD</title>
+   <para>
+    After you have initialized your DRBD device, create a cluster resource to manage
+    the DRBD device, and a promotable clone to allow this resource to run on both nodes:
+   </para>
+   <procedure xml:id="pro-ha-drbd-configure-cluster-resource">
+    <title>Creating cluster resources for DRBD</title>
+    <step>
+     <para>
+      Start the <command>crm</command> interactive shell:
+     </para>
+<screen>&prompt.root;<command>crm configure</command></screen>
+    </step>
+    <step>
+     <para>
+      Create a primitive for the DRBD resource <literal>r0</literal>:
+     </para>
+<screen>&prompt.crm.conf;<command>primitive drbd-r0 ocf:linbit:drbd \
+  params drbd_resource="r0" \
+  op monitor interval=15 role=Master \
+  op monitor interval=30 role=Slave</command></screen>
+    </step>
+    <step>
+     <para>
+      Create a promotable clone for the <literal>drbd-r0</literal> primitive:
+     </para>
+<screen>&prompt.crm.conf;<command>ms ms-drbd-r0 drbd-r0 \
+  meta master-max="1" master-node-max="1" \
+  clone-max="2" clone-node-max="1" notify="true" interleave=true</command></screen>
+    </step>
+    <step>
+     <para>
+      Commit this configuration:
+     </para>
+<screen>&prompt.crm.conf;<command>commit</command></screen>
+    </step>
+   </procedure>
+  </sect2>
  </sect1>
 
  <sect1 xml:id="sec-ha-drbd-migrate">