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You install the OpenShift API for Data Protection (OADP) with OpenShift Data Foundation by installing the OADP Operator and configuring a backup location and a snapshot location. Then, you install the Data Protection Application.

Starting from OADP 1.0.4, all OADP 1.0.z versions can only be used as a dependency of the MTC Operator and are not available as a standalone Operator.

You can configure Multicloud Object Gateway or any S3-compatible object storage as a backup location.

The CloudStorage API, which automates the creation of a bucket for object storage, is a Technology Preview feature only. Technology Preview features are not supported with Red Hat production service level agreements (SLAs) and might not be functionally complete. Red Hat does not recommend using them in production. These features provide early access to upcoming product features, enabling customers to test functionality and provide feedback during the development process.

For more information about the support scope of Red Hat Technology Preview features, see https://access.redhat.com/support/offerings/techpreview/.

You create a Secret for the backup location and then you install the Data Protection Application.

To install the OADP Operator in a restricted network environment, you must first disable the default OperatorHub sources and mirror the Operator catalog. For details, see Using Operator Lifecycle Manager on restricted networks.

Installing the OADP Operator

You install the OpenShift API for Data Protection (OADP) Operator on OpenShift Container Platform 4.11 by using Operator Lifecycle Manager (OLM).

The OADP Operator installs Velero 1.9.

Prerequisites
  • You must be logged in as a user with cluster-admin privileges.

Procedure
  1. In the OpenShift Container Platform web console, click OperatorsOperatorHub.

  2. Use the Filter by keyword field to find the OADP Operator.

  3. Select the OADP Operator and click Install.

  4. Click Install to install the Operator in the openshift-adp project.

  5. Click OperatorsInstalled Operators to verify the installation.

About backup and snapshot locations and their secrets

You specify backup and snapshot locations and their secrets in the DataProtectionApplication custom resource (CR).

Backup locations

You specify S3-compatible object storage, such as Multicloud Object Gateway, Noobaa, or Minio, as a backup location.

Velero backs up OpenShift Container Platform resources, Kubernetes objects, and internal images as an archive file on object storage.

Snapshot locations

If you use your cloud provider’s native snapshot API to back up persistent volumes, you must specify the cloud provider as the snapshot location.

If you use Container Storage Interface (CSI) snapshots, you do not need to specify a snapshot location because you will create a VolumeSnapshotClass CR to register the CSI driver.

If you use Restic, you do not need to specify a snapshot location because Restic backs up the file system on object storage.

Secrets

If the backup and snapshot locations use the same credentials or if you do not require a snapshot location, you create a default Secret.

If the backup and snapshot locations use different credentials, you create two secret objects:

  • Custom Secret for the backup location, which you specify in the DataProtectionApplication CR.

  • Default Secret for the snapshot location, which is not referenced in the DataProtectionApplication CR.

The Data Protection Application requires a default Secret. Otherwise, the installation will fail.

If you do not want to specify backup or snapshot locations during the installation, you can create a default Secret with an empty credentials-velero file.

Creating a default Secret

You create a default Secret if your backup and snapshot locations use the same credentials or if you do not require a snapshot location.

The default name of the Secret is cloud-credentials, unless your backup storage provider has a default plugin, such as aws, azure, or gcp. In that case, the default name is specified in the provider-specific OADP installation procedure.

The DataProtectionApplication custom resource (CR) requires a default Secret. Otherwise, the installation will fail. If the name of the backup location Secret is not specified, the default name is used.

If you do not want to use the backup location credentials during the installation, you can create a Secret with the default name by using an empty credentials-velero file.

Prerequisites
  • Your object storage and cloud storage, if any, must use the same credentials.

  • You must configure object storage for Velero.

  • You must create a credentials-velero file for the object storage in the appropriate format.

Procedure
  • Create a Secret with the default name:

    $ oc create secret generic cloud-credentials -n openshift-adp --from-file cloud=credentials-velero

The Secret is referenced in the spec.backupLocations.credential block of the DataProtectionApplication CR when you install the Data Protection Application.

Creating secrets for different credentials

If your backup and snapshot locations use different credentials, you must create two Secret objects:

  • Backup location Secret with a custom name. The custom name is specified in the spec.backupLocations block of the DataProtectionApplication custom resource (CR).

  • Snapshot location Secret with the default name, cloud-credentials. This Secret is not specified in the DataProtectionApplication CR.

Procedure
  1. Create a credentials-velero file for the snapshot location in the appropriate format for your cloud provider.

  2. Create a Secret for the snapshot location with the default name:

    $ oc create secret generic cloud-credentials -n openshift-adp --from-file cloud=credentials-velero
  3. Create a credentials-velero file for the backup location in the appropriate format for your object storage.

  4. Create a Secret for the backup location with a custom name:

    $ oc create secret generic <custom_secret> -n openshift-adp --from-file cloud=credentials-velero
  5. Add the Secret with the custom name to the DataProtectionApplication CR, as in the following example:

    apiVersion: oadp.openshift.io/v1alpha1
    kind: DataProtectionApplication
    metadata:
      name: <dpa_sample>
      namespace: openshift-adp
    spec:
    ...
      backupLocations:
        - velero:
            provider: <provider>
            default: true
            credential:
              key: cloud
              name: <custom_secret> (1)
            objectStorage:
              bucket: <bucket_name>
              prefix: <prefix>
    1 Backup location Secret with custom name.

Configuring the Data Protection Application

You can configure the Data Protection Application by setting Velero resource allocations or enabling self-signed CA certificates.

Setting Velero CPU and memory resource allocations

You set the CPU and memory resource allocations for the Velero pod by editing the DataProtectionApplication custom resource (CR) manifest.

Prerequisites
  • You must have the OpenShift API for Data Protection (OADP) Operator installed.

Procedure
  • Edit the values in the spec.configuration.velero.podConfig.ResourceAllocations block of the DataProtectionApplication CR manifest, as in the following example:

    apiVersion: oadp.openshift.io/v1alpha1
    kind: DataProtectionApplication
    metadata:
      name: <dpa_sample>
    spec:
    ...
      configuration:
        velero:
          podConfig:
            nodeSelector: <node selector> (1)
            resourceAllocations:
              limits:
                cpu: "1"
                memory: 512Mi
              requests:
                cpu: 500m
                memory: 256Mi
    1 Specify the node selector to be supplied to Velero podSpec

Enabling self-signed CA certificates

You must enable a self-signed CA certificate for object storage by editing the DataProtectionApplication custom resource (CR) manifest to prevent a certificate signed by unknown authority error.

Prerequisites
  • You must have the OpenShift API for Data Protection (OADP) Operator installed.

Procedure
  • Edit the spec.backupLocations.velero.objectStorage.caCert parameter and spec.backupLocations.velero.config parameters of the DataProtectionApplication CR manifest:

    apiVersion: oadp.openshift.io/v1alpha1
    kind: DataProtectionApplication
    metadata:
      name: <dpa_sample>
    spec:
    ...
      backupLocations:
        - name: default
          velero:
            provider: aws
            default: true
            objectStorage:
              bucket: <bucket>
              prefix: <prefix>
              caCert: <base64_encoded_cert_string> (1)
            config:
              insecureSkipTLSVerify: "false" (2)
    ...
    1 Specify the Base46-encoded CA certificate string.
    2 The insecureSkipTLSVerify configuration can be set to either "true" or "false". If set to "true", SSL/TLS security is disabled. If set to "false", SSL/TLS security is enabled.

Installing the Data Protection Application

You install the Data Protection Application (DPA) by creating an instance of the DataProtectionApplication API.

Prerequisites
  • You must install the OADP Operator.

  • You must configure object storage as a backup location.

  • If you use snapshots to back up PVs, your cloud provider must support either a native sna