Add tmp doc for how to use openbmc

docs/source/guides/admin-guides/manage_clusters/index.rst

@@ -11,3 +11,4 @@ The sections are organized based on hardware architecture.
 
    ppc64le/index.rst
    x86_64/index.rst
+   openbmc/index.rst

docs/source/guides/admin-guides/manage_clusters/openbmc/configure.rst

@@ -0,0 +1,9 @@
+Configure passwords
+===================
+
+Configure the passwords for Management modules of the compute nodes.
+
+* For OpenBMC managed systems: ::
+
+    chtab key=openbmc passwd.username=root passwd.password=0penBMC
+

docs/source/guides/admin-guides/manage_clusters/openbmc/index.rst

@@ -0,0 +1,12 @@
+OpenPOWER (OpenBMC managed)
+===========================
+
+The following sections documents the procedures in managing OpenPOWER servers in an xCAT cluster.  
+These are machines use the IBM Power Architecture and is **OpenBMC** managed.
+
+
+.. toctree::
+   :maxdepth: 2
+
+   configure.rst
+   openbmc.rst 

docs/source/guides/admin-guides/manage_clusters/openbmc/openbmc.rst

@@ -0,0 +1,60 @@
+Manually Define Nodes
+=====================
+
+**Manually Define Node** means the admin knows the detailed information of the physical server and manually defines it into xCAT database with ``mkdef`` commands.
+
+In this document, the following configuration is used in the example
+
+Compute Node info::
+
+    CN Hostname: cn1
+    BMC Address: 50.0.101.1
+    OpenBMC username: root
+    OpenBMC Password: 0penBMC
+
+Execute ``mkdef`` command to define the node: ::
+
+    mkdef -t node cn1 groups=openbmc,all mgt=openbmc cons=openbmc bmc=50.0.101.1 bmcusername=root bmcpassword=OpenBMC
+
+The manually defined node will be like this::
+
+    # lsdef cn1
+    Object name: cn1
+        bmc=50.0.101.1
+        bmcpassword=OpenBMC
+        bmcusername=root
+        cons=openbmc
+        groups=openbmc,all
+        mgt=openbmc
+        postbootscripts=otherpkgs
+        postscripts=syslog,remoteshell,syncfiles
+
+Hardware Management
+===================
+
+Remote Power Control
+````````````````````
+
+The next important thing is to control the power of a remote physical machine. For this purpose, ``rpower`` command is involved. ::
+
+    rpower cn1 on
+    rpower cn1 off
+    rpower cn1 boot
+    rpower cn1 reset
+
+Get the current rpower state of a machine, refer to the example below. ::
+
+    # rpower cn1 state
+    cn1: on
+
+Remote Console
+``````````````
+
+In order to get the command line console remotely. xCAT provides the ``rcons`` command.
+
+#. Make sure the ``conserver`` is configured by running ``makeconservercf``.
+
+#. After that, you can get the command line console for a specific machine with the ``rcons`` command ::
+
+    rcons cn1
+