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diff --git a/doc/start/index.rst b/doc/start/index.rst index e6e6ed2842b..cee41996627 100644 --- a/doc/start/index.rst +++ b/doc/start/index.rst @@ -2,30 +2,32 @@ Getting Started ================= -Whether you want to provide RESTful object services and/or block devices to a -cloud solution, deploy a CephFS filesystem or use Ceph for another purpose, all -Ceph clusters begin with setting up your host computers, network and the Ceph -Object Store. A Ceph object store cluster has three essential daemons: +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 has three essential daemons: .. ditaa:: +---------------+ +---------------+ +---------------+ | OSDs | | Monitor | | MDS | +---------------+ +---------------+ +---------------+ -- **OSDs**: Object Storage Daemons (OSDs) store data, handle data replication, - recovery, backfilling, rebalancing, and provide some monitoring information - to Ceph monitors by checking other OSDs for a heartbeat. A cluster requires - at least two OSDs to achieve an ``active + clean`` state. +- **OSDs**: A :term:`Ceph OSD Daemon` (OSD) stores data, handles data + replication, recovery, backfilling, rebalancing, and provides some monitoring + information to Ceph Monitors by checking other Ceph OSD Daemons for a + heartbeat. A Ceph Storage Cluster requires at least two Ceph OSD Daemons to + achieve an ``active + clean`` state. -- **Monitors**: Ceph monitors maintain maps of the cluster state, including - the monitor map, the OSD map, the Placement Group (PG) map, and the CRUSH - map. Ceph maintains a history (called an "epoch") of each state change in - the monitors, OSDs, and PGs. +- **Monitors**: A :term:`Ceph Monitor` maintains maps of the cluster state, + including the monitor map, the OSD map, the Placement Group (PG) map, and the + CRUSH map. Ceph maintains a history (called an "epoch") of each state change + in the Ceph Monitors, Ceph OSD Daemons, and PGs. -- **MDSs**: Metadata Servers (MDSs) store metadata on behalf of the CephFS - filesystem (i.e., Ceph block devices and Ceph gateways do not use MDS). - Ceph MDS servers make it feasible for POSIX file system users to execute - basic commands like ``ls``, ``find``, etc. without placing an enormous - burden on the object store. +- **MDSs**: A :term:`Ceph Metadata Server` (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 make it feasible for POSIX file system + users to execute basic commands like ``ls``, ``find``, etc. without placing + an enormous burden on the Ceph Storage Cluster. .. raw:: html @@ -33,9 +35,9 @@ Object Store. A Ceph object store cluster has three essential daemons: <style type="text/css">div.body h3{margin:5px 0px 0px 0px;}</style> <table cellpadding="10"><colgroup><col width="33%"><col width="33%"><col width="33%"></colgroup><tbody valign="top"><tr><td><h3>Step 1: Preflight</h3> -Client and server machines may require some basic configuration work prior to -deploying a Ceph cluster. You can also avail yourself of help from the Ceph -community by getting involved. +A :term:`Ceph Client` and a :term:`Ceph Node` may require some basic +configuration work prior to deploying a Ceph Storage Cluster. You can also +avail yourself of help from the Ceph community by getting involved. .. toctree:: @@ -59,12 +61,12 @@ deploying a Ceph Storage Cluster. </td><td><h3>Step 3: Ceph Client(s)</h3> Most Ceph users don't store objects directly in the Ceph Storage Cluster. They typically use at least one of -Ceph Block Devices, the Ceph FS filesystem, and Ceph Object Storage. +Ceph Block Devices, the Ceph Filesystem, and Ceph Object Storage. .. toctree:: Block Device Quick Start <quick-rbd> - Ceph FS Quick Start <quick-cephfs> + Filesystem Quick Start <quick-cephfs> Object Storage Quick Start <quick-rgw> |