How to enable gluster-block provisioning after OCS installation in Converged Mode.

Resolution

• Follow the steps to create to enable gluster-block provisioner:

  1. Extract the key value of the heketi admin key:

     # oc get secret heketi-storage-admin-secret -o yaml | grep key
     

  2. Create heketi-admin block secret:

     apiVersion: v1
     data:
     key:  <value of heketi admin key>
     kind: Secret
     metadata:
     name: heketi-storage-admin-secret-block
     namespace: <namepsace>
     type: gluster.org/glusterblock
     

  3. Create glusterblock-provisioner resources from template:

     # oc create -f /usr/share/heketi/templates/glusterblock-provisioner.yaml
     

  4. Edit parameters - IMAGE_NAME and IMAGE_VERSION in gluster-block provisioner template.

     # oc edit template glusterblock-provisioner
     

  5. Create the deployment configuration

     # oc process -p PROVISIONER_NAME=gluster.org/glusterblock-app-storage glusterblock-provisioner -o yaml | oc create -f -
     

  6. Create glusterfs-block storage class and pass the secert "heketi-storage-admin-secret-block" created in above step:

     apiVersion: storage.k8s.io/v1
     kind: StorageClass
     metadata:
     annotations:
      storageclass.kubernetes.io/is-default-class: "false"
     name: glusterfs-storage-block
     parameters:
     chapauthenabled: "true"
     hacount: "3"
     restsecretname: heketi-storage-admin-secret-block
     restsecretnamespace: <namespace>
     resturl: http://heketi-storage.<namespace>.svc:8080
     restuser: admin
     provisioner: gluster.org/glusterblock-storage
     reclaimPolicy: Delete
     volumeBindingMode: Immediate
     

• Verify gluster-block provisioning is enabled by following below steps:

  1. gluster-block provisioner pod is running

     # oc get pods -n <gluster-namespace> 
     

  2. Create a PVC using glusterfs-storage-block storage class.