Ceph 术语

Ceph is growing rapidly. As firms deploy Ceph, the technical terms such as “RADOS”, “RBD,” “RGW” and so forth require corresponding marketing terms that explain what each component does. The terms in this glossary are intended to complement the existing technical terminology.

Sometimes more than one term applies to a definition. Generally, the first term reflects a term consistent with Ceph’s marketing, and secondary terms reflect either technical terms or legacy ways of referring to Ceph systems.

Ceph Project
Ceph 项目

关于 Ceph 的团队、软件、任务和基础架构的统称。

cephx

Ceph 的认证协议， Cephx 的运行机制类似 Kerberos ，但它没有单故障点。

Ceph
Ceph Platform
Ceph 平台

所有与 Ceph 相关的软件，包括所有位于 http://github.com/ceph 的源码。

Ceph System
Ceph Stack
Ceph 系统
Ceph 软件栈

Ceph 之中两个或更多组件的组合。

Ceph Node
Node
Host
Ceph 节点
节点
主机

Ceph 系统内的任意单体机器或服务器。

Ceph Storage Cluster
Ceph Object Store
RADOS
RADOS Cluster
Reliable Autonomic Distributed Object Store
Ceph 存储集群
Ceph 对象存储
RADOS 集群
可靠自主的分布式对象存储

The core set of storage software which stores the user’s data (MON+OSD).

Ceph Cluster Map
cluster map
Ceph 集群运行图
集群运行图

The set of maps comprising the monitor map, OSD map, PG map, MDS map and CRUSH map. See Cluster Map for details.

Ceph Object Storage
Ceph 对象存储

The object storage “product”, service or capabilities, which consists essentially of a Ceph Storage Cluster and a Ceph Object Gateway.

Ceph Object Gateway
RADOS Gateway
RGW
Ceph 对象网关
RADOS 网关

The S3/Swift gateway component of Ceph.

Ceph Block Device
RBD
Ceph 块设备
RBD

The block storage component of Ceph.

Ceph Block Storage
Ceph 块存储

The block storage “product,” service or capabilities when used in conjunction with librbd, a hypervisor such as QEMU or Xen, and a hypervisor abstraction layer such as libvirt.

Ceph Filesystem
CephFS
Ceph FS
Ceph 文件系统

The POSIX filesystem components of Ceph.

Cloud Platforms
Cloud Stacks
云平台
云软件栈

Third party cloud provisioning platforms such as OpenStack, CloudStack, OpenNebula, ProxMox, etc.

Object Storage Device
OSD
对象存储设备

A physical or logical storage unit (e.g., LUN). Sometimes, Ceph users use the term “OSD” to refer to Ceph OSD Daemon, though the proper term is “Ceph OSD”.

Ceph OSD Daemon
Ceph OSD
Ceph 对象存储守护进程
Ceph OSD 守护进程

The Ceph OSD software, which interacts with a logical disk (OSD). Sometimes, Ceph users use the term “OSD” to refer to “Ceph OSD Daemon”, though the proper term is “Ceph OSD”.

Ceph Monitor
MON
Ceph 监视器
监视器

The Ceph monitor software.

Ceph Metadata Server
MDS
Ceph 元数据服务器
元数据服务器

The Ceph metadata software.

Ceph Clients
Ceph Client
Ceph 客户端

The collection of Ceph components which can access a Ceph Storage Cluster. These include the Ceph Object Gateway, the Ceph Block Device, the Ceph Filesystem, and their corresponding libraries, kernel modules, and FUSEs.

Ceph Kernel Modules
Ceph 内核模块

The collection of kernel modules which can be used to interact with the Ceph System (e.g,. ceph.ko, rbd.ko).

Ceph Client Libraries
Ceph 客户端库

The collection of libraries that can be used to interact with components of the Ceph System.

Ceph Release
Ceph 发布

Any distinct numbered version of Ceph.

Ceph Point Release
Ceph 修正版

Any ad-hoc release that includes only bug or security fixes.

Ceph Interim Release
Ceph 临时发布

Versions of Ceph that have not yet been put through quality assurance testing, but may contain new features.

Ceph Release Candidate
Ceph 预发布

A major version of Ceph that has undergone initial quality assurance testing and is ready for beta testers.

Ceph Stable Release
Ceph 稳定版

A major version of Ceph where all features from the preceding interim releases have been put through quality assurance testing successfully.

Ceph Test Framework
Teuthology
Ceph 测试框架
测试方法学

The collection of software that performs scripted tests on Ceph.

CRUSH

Controlled Replication Under Scalable Hashing. It is the algorithm Ceph uses to compute object storage locations.

ruleset
规则集

A set of CRUSH data placement rules that applies to a particular pool(s).

Pool
Pools
存储池

池是对象存储的逻辑部分。