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, 56 insertions, 0 deletions

diff --git a/src/ceph/doc/rados/deployment/ceph-deploy-mon.rst b/src/ceph/doc/rados/deployment/ceph-deploy-mon.rst
new file mode 100644
index 0000000..bda34fe
--- /dev/null
+++ b/src/ceph/doc/rados/deployment/ceph-deploy-mon.rst
@@ -0,0 +1,56 @@
+=====================
+ Add/Remove Monitors
+=====================
+
+With ``ceph-deploy``, adding and removing monitors is a simple task. You just
+add or remove one or more monitors on the command line with one command. Before
+``ceph-deploy``,  the process of `adding and removing monitors`_ involved
+numerous manual steps. Using ``ceph-deploy`` imposes a restriction:  **you may
+only install one monitor per host.**
+
+.. note:: We do not recommend comingling monitors and OSDs on 
+   the same host.
+
+For high availability, you should run a production Ceph cluster with **AT
+LEAST** three monitors. Ceph uses the Paxos algorithm, which requires a
+consensus among the majority of monitors in a quorum. With Paxos, the monitors
+cannot determine a majority for establishing a quorum with only two monitors. A
+majority of monitors must be counted as such: 1:1, 2:3, 3:4, 3:5, 4:6, etc.
+
+See `Monitor Config Reference`_ for details on configuring monitors.
+
+
+Add a Monitor
+=============
+
+Once you create a cluster and install Ceph packages to the monitor host(s), you
+may deploy the monitor(s) to the monitor host(s). When using ``ceph-deploy``,
+the tool enforces a single monitor per host. ::
+
+	ceph-deploy mon create {host-name [host-name]...}
+
+
+.. note:: Ensure that you add monitors such that they may arrive at a consensus
+   among a majority of monitors, otherwise other steps (like ``ceph-deploy gatherkeys``)
+   will fail.
+
+.. note::  When adding a monitor on a host that was not in hosts initially defined
+   with the ``ceph-deploy new`` command, a ``public network`` statement needs
+   to be added to the ceph.conf file.
+
+Remove a Monitor
+================
+
+If you have a monitor in your cluster that you'd like to remove, you may use 
+the ``destroy`` option. :: 
+
+	ceph-deploy mon destroy {host-name [host-name]...}
+
+
+.. note:: Ensure that if you remove a monitor, the remaining monitors will be 
+   able to establish a consensus. If that is not possible, consider adding a 
+   monitor before removing the monitor you would like to take offline.
+
+
+.. _adding and removing monitors: ../../operations/add-or-rm-mons
+.. _Monitor Config Reference: ../../configuration/mon-config-ref