Storage

Built-in Ceph cluster

External storage

When using an external storage platform, it's important to create to disable Ceph globally by adding the following to your Ansible inventory:

atmosphere_ceph_enabled: false

Dell PowerStore

In order to be able to use Dell PowerStore, you'll need to make sure that you setup the hosts inside of your storage array. You'll also need to make sure that they are not inside a host group or otherwise individual attachments will not work.

CSI

You'll need to enable the Kubernetes cluster to use the PowerStore driver by using adding the following YAML to your Ansible inventory:

csi_driver: powerstore
powerstore_csi_config:
  arrays:
    - endpoint: https://<FILL IN>/api/rest
      globalID: <FILL IN>
      username: <FILL IN>
      password: <FILL IN>
      skipCertificateValidation: true
      isDefault: true
      blockProtocol: <FILL IN> # FC or iSCSI

Glance

Since Glance does not have a native PowerStore driver, you'll need to enable the use of the Cinder driver by adding the following to your Ansible inventory:

glance_helm_values:
  storage: cinder
  conf:
    glance:
      glance_store:
        stores: cinder
        default_store: cinder
      image_formats:
        disk_formats: raw

Please note that Glance images will not function until the Cinder service is deployed. In addition, we're forcing all images to be raw format in order to avoid any issues with the PowerStore driver having to constantly download and upload the images.

Cinder

You can enable the native PowerStore driver for Cinder with the following configuration inside your Ansible inventory:

cinder_helm_values:
  storage: powerstore
  dependencies:
    static:
      api:
        jobs:
          - cinder-db-sync
          - cinder-ks-user
          - cinder-ks-endpoints
          - cinder-rabbit-init
      scheduler:
        jobs:
          - cinder-db-sync
          - cinder-ks-user
          - cinder-ks-endpoints
          - cinder-rabbit-init
      volume:
        jobs:
          - cinder-db-sync
          - cinder-ks-user
          - cinder-ks-endpoints
          - cinder-rabbit-init
      volume_usage_audit:
        jobs:
          - cinder-db-sync
          - cinder-ks-user
          - cinder-ks-endpoints
          - cinder-rabbit-init
  conf:
    cinder:
      DEFAULT:
        enabled_backends: powerstore
        default_volume_type: powerstore
    backends:
      rbd1: null
      powerstore:
        volume_backend_name: powerstore
        volume_driver: cinder.volume.drivers.dell_emc.powerstore.driver.PowerStoreDriver
        san_ip: <FILL IN>
        san_login: <FILL IN>
        san_password: <FILL IN>
        storage_protocol: <FILL IN> # FC or iSCSI
  manifests:
    deployment_backup: true
    job_backup_storage_init: true
    job_storage_init: false

It's important to note that the configuration above will disable the Cinder backup service. In the future, we'll update this sample configuration to use the Cinder backup service.

Nova

You can enable the native PowerStore driver for Cinder with the following configuration inside your Ansible inventory:

nova_helm_values:
  conf:
    enable_iscsi: true

!!! note

The PowerStore driver will use the storage protocol specified inside Cinder,
even if the above mentions `iscsi`.