Configuring the OpenShift API for Data Protection with OpenShift Data Foundation

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.

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

You create a Secret for the backup location and then you install the Data Protection Application. For more details, see Installing the OADP Operator.

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.

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 OKD 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.

Additional resources

• Creating an Object Bucket Claim using the OpenShift Web Console.

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.

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.

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: (2)
            limits:
              cpu: "1"
              memory: 1024Mi
            requests:
              cpu: 200m
              memory: 256Mi

  1	Specify the node selector to be supplied to Velero podSpec.
  2	The resourceAllocations listed are for average usage.

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 Base64-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 snapshot API or Container Storage Interface (CSI) snapshots.

• If the backup and snapshot locations use the same credentials, you must create a Secret with the default name, cloud-credentials.

  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. If there is no default Secret, the installation will fail.

Procedure

1. Click Operators → Installed Operators and select the OADP Operator.

2. Under Provided APIs, click Create instance in the DataProtectionApplication box.

3. Click YAML View and update the parameters of the DataProtectionApplication manifest:

4. Click Create.

5. Verify the installation by viewing the OADP resources:

   $ oc get all -n openshift-adp

   Example output

   NAME                                                     READY   STATUS    RESTARTS   AGE
   pod/oadp-operator-controller-manager-67d9494d47-6l8z8    2/2     Running   0          2m8s
   pod/restic-9cq4q                                         1/1     Running   0          94s
   pod/restic-m4lts                                         1/1     Running   0          94s
   pod/restic-pv4kr                                         1/1     Running   0          95s
   pod/velero-588db7f655-n842v                              1/1     Running   0          95s
   NAME                                                       TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)    AGE
   service/oadp-operator-controller-manager-metrics-service   ClusterIP   172.30.70.140    <none>        8443/TCP   2m8s
   NAME                    DESIRED   CURRENT   READY   UP-TO-DATE   AVAILABLE   NODE SELECTOR   AGE
   daemonset.apps/restic   3         3         3       3            3           <none>          96s
   NAME                                                READY   UP-TO-DATE   AVAILABLE   AGE
   deployment.apps/oadp-operator-controller-manager    1/1     1            1           2m9s
   deployment.apps/velero                              1/1     1            1           96s
   NAME                                                           DESIRED   CURRENT   READY   AGE
   replicaset.apps/oadp-operator-controller-manager-67d9494d47    1         1         1       2m9s
   replicaset.apps/velero-588db7f655                              1         1         1       96s

Creating an Object Bucket Claim for disaster recovery on OpenShift Data Foundation

If you use cluster storage for your NooBaa bucket backupStorageLocation on OpenShift Data Foundation, create an Object Bucket Claim (OBC) using the OpenShift Web Console.

Procedure

• Create an Object Bucket Claim (OBC) using the OpenShift Web Console as described in Creating an Object Bucket Claim using the OpenShift Web Console.

Enabling CSI in the DataProtectionApplication CR

You enable the Container Storage Interface (CSI) in the DataProtectionApplication custom resource (CR) in order to back up persistent volumes with CSI snapshots.

Prerequisites

• The cloud provider must support CSI snapshots.

Procedure

• Edit the DataProtectionApplication CR, as in the following example:

  apiVersion: oadp.openshift.io/v1alpha1
  kind: DataProtectionApplication
  ...
  spec:
    configuration:
      velero:
        defaultPlugins:
        - openshift
        - csi (1)

  1	Add the csi default plugin.