docs: add initial operate guide structure

Signed-off-by: Gyuho Lee <gyuhox@gmail.com>

docs/index.rst

@@ -2,9 +2,33 @@
 etcd Documentation
 ==================
 
-* :ref:`faq`: Frequently Asked Questions.
+This is an official etcd documentation.
-* :ref:`client-architecture`: Describes etcd client components.
 
+Still working in progress...
+
+* :ref:`set-up`: setting up an etcd cluster.
+* :ref:`operate`: operating an etcd cluster.
+* :ref:`monitor`: monitoring an etcd cluster.
+* :ref:`faq`: frequently asked questions.
+* :ref:`client-architecture`: describes etcd client components.
+
+.. toctree::
+   :maxdepth: 3
+   :caption: Set up
+
+   set-up
+
+.. toctree::
+   :maxdepth: 3
+   :caption: Operate
+
+   operate
+
+.. toctree::
+   :maxdepth: 3
+   :caption: Monitor
+
+   monitor
 
 .. toctree::
    :maxdepth: 3

docs/operate.rst

@@ -0,0 +1,22 @@
+.. _operate:
+
+
+Operate
+#######
+
+TODO
+
+
+Introduction
+============
+
+TODO
+
+
+.. _monitor:
+
+
+Monitor
+#######
+
+TODO

docs/set-up.rst

@@ -0,0 +1,13 @@
+.. _set-up:
+
+
+Set up
+######
+
+TODO
+
+
+Introduction
+============
+
+TODO