initial code repo

This patch creates initial code repo.

For ceph, luminous stable release will be used for base code,
and next changes and optimization for ceph will be added to it.

For opensds, currently any changes can be upstreamed into original
opensds repo (https://github.com/opensds/opensds), and so stor4nfv
will directly clone opensds code to deploy stor4nfv environment.
And the scripts for deployment based on ceph and opensds will be
put into 'ci' directory.

Change-Id: I46a32218884c75dda2936337604ff03c554648e4
Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com>

1 files changed, 87 insertions, 0 deletions

diff --git a/src/ceph/doc/start/intro.rst b/src/ceph/doc/start/intro.rst
new file mode 100644
index 0000000..95b51dd
--- /dev/null
+++ b/src/ceph/doc/start/intro.rst
@@ -0,0 +1,87 @@
+===============
+ Intro to Ceph
+===============
+
+Whether you want to provide :term:`Ceph Object Storage` and/or
+:term:`Ceph Block Device` services to :term:`Cloud Platforms`, deploy
+a :term:`Ceph Filesystem` or use Ceph for another purpose, all
+:term:`Ceph Storage Cluster` deployments begin with setting up each
+:term:`Ceph Node`, your network, and the Ceph Storage Cluster. A Ceph
+Storage Cluster requires at least one Ceph Monitor, Ceph Manager, and
+Ceph OSD (Object Storage Daemon). The Ceph Metadata Server is also
+required when running Ceph Filesystem clients.
+
+.. ditaa::  +---------------+ +------------+ +------------+ +---------------+
+            |      OSDs     | | Monitors   | |  Managers  | |      MDSs     |
+            +---------------+ +------------+ +------------+ +---------------+
+
+- **Monitors**: A :term:`Ceph Monitor` (``ceph-mon``) maintains maps
+  of the cluster state, including the monitor map, manager map, the
+  OSD map, and the CRUSH map.  These maps are critical cluster state
+  required for Ceph daemons to coordinate with each other.  Monitors
+  are also responsible for managing authentication between daemons and
+  clients.  At least three monitors are normally required for
+  redundancy and high availability.
+
+- **Managers**: A :term:`Ceph Manager` daemon (``ceph-mgr``) is
+  responsible for keeping track of runtime metrics and the current
+  state of the Ceph cluster, including storage utilization, current
+  performance metrics, and system load.  The Ceph Manager daemons also
+  host python-based plugins to manage and expose Ceph cluster
+  information, including a web-based `dashboard`_ and `REST API`_.  At
+  least two managers are normally required for high availability.
+
+- **Ceph OSDs**: A :term:`Ceph OSD` (object storage daemon,
+  ``ceph-osd``) stores data, handles data replication, recovery,
+  rebalancing, and provides some monitoring information to Ceph
+  Monitors and Managers by checking other Ceph OSD Daemons for a
+  heartbeat. At least 3 Ceph OSDs are normally required for redundancy
+  and high availability.
+
+- **MDSs**: A :term:`Ceph Metadata Server` (MDS, ``ceph-mds``) stores
+  metadata on behalf of the :term:`Ceph Filesystem` (i.e., Ceph Block
+  Devices and Ceph Object Storage do not use MDS). Ceph Metadata
+  Servers allow POSIX file system users to execute basic commands (like
+  ``ls``, ``find``, etc.) without placing an enormous burden on the
+  Ceph Storage Cluster.
+
+Ceph stores data as objects within logical storage pools. Using the
+:term:`CRUSH` algorithm, Ceph calculates which placement group should
+contain the object, and further calculates which Ceph OSD Daemon
+should store the placement group.  The CRUSH algorithm enables the
+Ceph Storage Cluster to scale, rebalance, and recover dynamically.
+
+.. _dashboard: ../../mgr/dashboard
+.. _REST API: ../../mgr/restful
+
+.. raw:: html
+
+	<style type="text/css">div.body h3{margin:5px 0px 0px 0px;}</style>
+	<table cellpadding="10"><colgroup><col width="50%"><col width="50%"></colgroup><tbody valign="top"><tr><td><h3>Recommendations</h3>
+	
+To begin using Ceph in production, you should review our hardware
+recommendations and operating system recommendations. 
+
+.. toctree::
+   :maxdepth: 2
+
+   Hardware Recommendations <hardware-recommendations>
+   OS Recommendations <os-recommendations>
+
+
+.. raw:: html 
+
+	</td><td><h3>Get Involved</h3>
+
+   You can avail yourself of help or contribute documentation, source 
+   code or bugs by getting involved in the Ceph community.
+
+.. toctree::
+   :maxdepth: 2
+
+   get-involved
+   documenting-ceph
+
+.. raw:: html
+
+	</td></tr></tbody></table>