Notice
This document is for a development version of Ceph.
Warning
This document is for an unsupported version of Ceph.
Ceph Storage Cluster
The Ceph Storage Cluster is the foundation for all Ceph deployments.
Based upon RADOS, Ceph
Storage Clusters consist of two types of daemons: a Ceph OSD Daemon
(OSD) stores data as objects on a storage node; and a Ceph Monitor (MON)
maintains a master copy of the cluster map. A Ceph Storage Cluster may contain
thousands of storage nodes. A minimal system will have at least one
Ceph Monitor and two Ceph OSD Daemons for data replication.
The Ceph Filesystem, Ceph Object Storage and Ceph Block Devices read data from
and write data to the Ceph Storage Cluster.
Config and DeployCeph Storage Clusters have a few required settings, but most configuration
settings have default values. A typical deployment uses a deployment tool
to define a cluster and bootstrap a monitor. See Deployment for details
on ceph-deploy.
| OperationsOnce you have a deployed a Ceph Storage Cluster, you may begin operating
your cluster.
| APIsMost Ceph deployments use Ceph Block Devices, Ceph Object Storage and/or the
Ceph Filesystem. You may also develop applications that talk directly to
the Ceph Storage Cluster.
|