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Version: 5.16.1

How to Provision Application S3 Buckets Using Rook-Ceph

This guide walks you through the steps to provision S3-compatible buckets in a Rook-Ceph environment.

note

These tasks are intended to be completed as an administrator.

Prerequisites​

  • Rook cluster deployed with Ceph Object Storage (RGW)
  • At least 3 OSD pods on separate nodes
  • kubectl configured to interact with your cluster

Step 1: Create a CephObjectStore​

Run the following command to confirm the RGW pods are up:

kubectl -n rook-ceph get pod -l app=rook-ceph-rgw

Apply the CephObjectStore YAML configuration:

kubectl apply -f ceph-object-store.yaml

Your ceph-object-store.yaml should look similar to this:

apiVersion: ceph.rook.io/v1
kind: CephObjectStore
metadata:
  name: my-store
  namespace: rook-ceph
spec:
  metadataPool:
    failureDomain: host
    replicated:
      size: 3
  dataPool:
    failureDomain: host
    erasureCoded:
      dataChunks: 2
      codingChunks: 1
  gateway:
    port: 80
    instances: 1

Step 2: Create a Storage Class​

Create a storage class to enable clients to provision buckets.

Apply the StorageClass YAML configuration:

kubectl apply -f storage-class.yaml

Your storage-class.yaml should look similar to this:

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: rook-ceph-bucket
provisioner: rook-ceph.ceph.rook.io/bucket
parameters:
  objectStoreName: my-store
  objectStoreNamespace: rook-ceph
note

If your Rook operator is in a different namespace, adjust the provisioner value to match that namespace.

Verifying Your Setup​

To ensure everything is set up correctly, run the following:

kubectl get storageclass
kubectl -n rook-ceph describe CephObjectStore my-store

FAQs​

How can I specify different failure domains?​

You can modify the failureDomain field in the CephObjectStore YAML.

What if I have more than 3 OSD Pods?​

You can specify a larger size in the replicated section of the CephObjectStore.

Additional Resources​

By following these steps, you'll be able to provision application S3 buckets using Rook-Ceph. For additional configurations and advanced setups, refer to the official Rook and Ceph documentation.