Ceph Object Storage (RADOS Gateway)
Ceph provides us more abstractions other than RBD images and CephFS to store and access data. One of the most widely used is the object storage system. An object storage system is one where files can be uploaded to and downloaded from storage servers using simple and conventional protocols such as HTTP.
Ceph's RADOS Gateway (RGW) storage service aims to fill this need by presenting Amazon S3-compatible and OpenStack Swift-compatible interfaces atop RADOS objects. There are abundant GUI clients, command line clients, and SDKs for every major programming language that supports Amazon S3. Clients talking to object storage systems need only to know how to leverage these widely-available tools to store and retrieve files.
In order to show how to provision an RGW service, we will again use the sandbox cluster we created in Chapter 5, Deploying a Virtual Sandbox Cluster. When deploying in production you most likely will want to configure the RGW service on dedicated...