intro to ops guide (#2387)

site/operational-guide.md

@@ -1,5 +1,32 @@
 ---
 title: Operational Guide
-menu_order: 35
+menu_order: 45
 ---
-Operations manual.
+This operational guide is intended to give you an overview of how to
+operate and manage a Weave Network in production. It consists of three
+main parts:
+
+* A [glossary of concepts](/site/operational-guide/concepts.md) with
+  which you will need to be familiar
+* Detailed instructions for safely bootstrapping, growing and
+  shrinking Weave networks in a number of different deployment
+  scenarios:
+    * An [interactive
+      installation](/site/operational-guide/interactive.md), suitable
+      for evaluation and development
+    * A [uniformly configured
+      cluster](/site/operational-guide/uniform-fixed-cluster.md) with
+      a fixed number of initial nodes, suitable for automated
+      provisioning but requiring manual intervention for resizing
+    * A [heterogenous cluster](/site/operational-guide/autoscaling.md)
+      comprising fixed and autoscaling components, suitable for a base
+      load with automated scale-out/scale-in
+    * A [uniformly configured
+      cluster](/site/operational-guide/uniform-dynamic-cluster.md)
+      with dynamic nodes, suitable for automated provisioning and
+      resizing.
+* A list of [common administrative
+  tasks](/site/operational-guide/tasks.md), such as configuring Weave
+  Net to start on boot, upgrading clusters, cleaning up peers and
+  reclaiming IP address space
+