PLEASE NOTE: This document applies to v0.7 version and not to the latest stable release v1.9
Object storage exposes an S3 API to the storage cluster for applications to put and get data.
This guide assumes you have created a Rook cluster as explained in the main Kubernetes guide
Now we will create the object store, which starts the RGW service in the cluster with the S3 API.
Specify your desired settings for the object store in the
rook-object.yaml. For more details on the settings see the Object Store CRD.
apiVersion: rook.io/v1alpha1 kind: ObjectStore metadata: name: my-store namespace: rook spec: metadataPool: replicated: size: 3 dataPool: erasureCoded: dataChunks: 2 codingChunks: 1 gateway: type: s3 sslCertificateRef: port: 80 securePort: instances: 1 allNodes: false
Kubernetes 1.6 or earlier
If you are using a version of Kubernetes earlier than 1.7, you will need to slightly modify one setting to be compatible with TPRs (deprecated in 1.7). Notice the different casing.
Create the Object Store
Now let’s create the object store. The Rook operator will create all the pools and other resources necessary to start the service. This may take a minute to complete.
# Create the object store kubectl create -f rook-object.yaml # To confirm the object store is configured, wait for the rgw pod to start kubectl -n rook get pod -l app=rook-ceph-rgw
Create a User
Creating an object storage user requires running
rookctl commands with the Rook toolbox pod. This will be simplified in the future with a CRD for the object store users.
rookctl object user create my-store rook-user "A rook rgw User"
The object store is now available by using the creds of
If your s3 client uses environment variables, the client can print them for you
rookctl object connection my-store rook-user --format env-var
See the Object Storage documentation for more steps on consuming the object storage.
Access External to the Cluster
Rook sets up the object storage so pods will have access internal to the cluster. If your applications are running outside the cluster,
you will need to setup an external service through a
First, note the service that exposes RGW internal to the cluster. We will leave this service intact and create a new service for external access.
$ kubectl -n rook get service rook-ceph-rgw-my-store NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE rook-ceph-rgw-my-store 10.3.0.177 <none> 80/TCP 2m
Save the external service as
apiVersion: v1 kind: Service metadata: name: rook-ceph-rgw-my-store-external namespace: rook labels: app: rook-ceph-rgw rook_cluster: rook rook_object_store: my-store spec: ports: - name: rgw port: 53390 protocol: TCP targetPort: 53390 selector: app: rook-ceph-rgw rook_cluster: rook rook_object_store: my-store sessionAffinity: None type: NodePort
Now create the external service.
kubectl create -f rgw-external.yaml
See both rgw services running and notice what port the external service is running on:
$ kubectl -n rook get service rook-ceph-rgw-my-store rook-ceph-rgw-my-store-external NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE rook-ceph-rgw-my-store 10.0.0.83 <none> 80/TCP 21m rook-ceph-rgw-my-store-external 10.0.0.26 <nodes> 53390:30041/TCP 1m
Internally the rgw service is running on port
53390. The external port in this case is
30041. Now you can access the object store from anywhere! All you need is the hostname for any machine in the cluster, the external port, and the user credentials.