Shulou(Shulou.com)06/01 Report--

This article mainly explains "Introduction to the Core Components and Concepts of Ceph". The explanation content in this article is simple and clear, easy to learn and understand. Please follow the ideas of Xiaobian to study and learn "Introduction to the Core Components and Concepts of Ceph" together.

Monitor

A Ceph cluster requires a small cluster of multiple monitors that synchronize data via Paxos to store OSD metadata.

OSD

OSD stands for Object Storage Device, which is the process responsible for returning specific data in response to client requests. A Ceph cluster usually has many ODSs.

MDS

MDS is the full name of Ceph Metadata Server, which is a metadata service on which CephFS service depends.

Object

The lowest storage unit of Ceph is the Object object, and each Object contains metadata and raw data.

PG

PG is a logical concept, a PG contains multiple OSD. PG is introduced to better distribute data and position data.

RADOS

RADOS is the full name of Reliable Autonomous Distributed Object Store, which is the essence of Ceph cluster. Users can realize cluster operations such as data distribution and Failover.

Libradio

Librados is a Rados library, because RADOS is a protocol that is difficult to access directly, so the upper RBD, RGW and CephFS are accessed through librados, currently providing PHP, Ruby, Java, Python, C and C++ support.

CRUSH

CRUSH is a data distribution algorithm used by Ceph, similar to consistent hashing, to distribute data where it is expected.

RBD

RBD is the full name of RADOS block device, which is a block device service provided by Ceph.

RGW

RGW, full name RADOS gateway, is an object storage service provided by Ceph, and its interface is compatible with S3 and Swift.

CephFS

CephFS is a file system service provided by Ceph.

Thank you for reading, the above is the content of "Ceph core components and concept introduction", after learning this article, I believe that everyone has a deeper understanding of Ceph core components and concept introduction, and the specific use needs to be verified by practice. Here is, Xiaobian will push more articles related to knowledge points for everyone, welcome to pay attention!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.