Rook-Ceph Object Storage Class

In this article we will set up a Kubernetes object storage class using rook-ceph object storage provisioner.

Requirement & Assumption

Here, we assume that a Ceph cluster is deployed with RGW service. Basic instructions for deploying Ceph and RGW service can be found in these two articles.

• Ceph Cluster Deploy
• Ceph Object Storage

More advanced configurations can be found in the article lists presented in Article on Ceph.

On Kubernetes, we assume that a cephcluster is correctly configured.

The steps for deploying a cephclusters.ceph.rook.io custom resource definition are described here.

Setup on Ceph Cluster

First we need to create a rgw user with the following command.

sudo radosgw-admin user create --uid=rgw-admin-ops-user --display-name="RGW Admin Ops User" --caps="buckets=*;users=*;usage=read;metadata=read;zone=read" --rgw-realm=<realm-name> --rgw-zonegroup=<zonegroup-name> --rgw-zone=<zone-name>

To get names of realms, zonegroups and zones, we can use these commands.

sudo radosgw-admin realm list
sudo radosgw-admin zone list
sudo radosgw-admin zonegroup list

An output of these commands are shown below.