Ceph RADOS Gateway is an object storage interface built on top of librgw to provide applications with a RESTful gateway to Ceph Storage Clusters. Ceph Object Storage supports two interfaces:
S3-compatible: Provides object storage functionality with an interface that is compatible with a large subset of the Amazon S3 RESTful API.
Swift-compatible: Provides object storage functionality with an interface that is compatible with a large subset of the OpenStack Swift API.
Ceph Object Storage uses the Ceph RADOS Gateway daemon (radosgw), which uses an embedded HTTP server (CivetWeb) for interacting with a Ceph Storage Cluster. Since it provides interfaces compatible with OpenStack Swift and Amazon S3, the Ceph RADOS Gateway has its own user management. Ceph RADOS Gateway can store data in the same Ceph Storage Cluster used to store data from Ceph File System clients or Ceph Block Device clients. The S3 and Swift APIs share a common name space, so you may write data with one API and retrieve it with the other.
This section helps you install and manage the Ceph RADOS Gateway (RADOS Gateway). You can either choose to use the ceph-deploy tool, or do the installation and management manually.
IMPORTANT: Before installing RADOS Gateway, you need to have the Ceph cluster installed first (see Section 3.0, Introduction for more information).