Introduction

Overview

Ceph is a reliable, auto-rebalancing, and auto-recovery distributed storage system. Based on application scenarios, Ceph can be divided into object storage, block device storage, and file system services. Ceph provides unified scale-out storage with self-healing and intelligent fault prediction functions. It has become one of the most widely accepted standards of software-defined storage. Ceph is open-source, which allows many vendors to provide Ceph-based software for defining appropriate storage systems. In the virtualization field, Ceph is the most popular open-source storage solution in the OpenStack ecosystem. One of the design principles of OpenStack project is flexibility and scalability. The background of each member project is different, which causes each project to make different choices when the storage system is involved. In this case, Ceph can be used as an ideal unified storage backend for OpenStack. This document describes how to integrate OpenStack Stein with Ceph.

Recommended Software Versions

Table 1 lists the recommended software versions.

**Table 1** Recommended software versions
Software	Recommended Version
OpenStack	Stein, Queens, Rocky
Ceph	14.2.10

Parent topic: OpenStack and Ceph Integrated Deployment Guide (CentOS 7.6 and openEuler 20.03)