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Installing and configuring the OpenShift API for Data Protection with OpenShift Container Storage

You install the OpenShift API for Data Protection (OADP) with OpenShift Container Storage (OCS) 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 in the DataProtectionApplication custom resource (CR).

The CloudStorage API for S3 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 Technology Preview Features Support Scope.

If the cloud provider has a native snapshot API, you can configure cloud storage as a snapshot location in the DataProtectionApplication CR. You do not need to specify a snapshot location for Restic or Container Storage Interface (CSI) snapshots.

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 4.9 by using Operator Lifecycle Manager (OLM).

The OADP Operator installs Velero 1.7.

Prerequisites

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

Procedure

  1. In the OpenShift Container Platform web console, click Operators → OperatorHub.

  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 Operators → Installed Operators to verify the installation.

After you install the OADP Operator, you configure object storage as a backup location and cloud storage as a snapshot location, if the cloud provider supports a native snapshot API.

If the cloud provider does not support snapshots or if your storage is NFS, you can create backups with Restic. Restic does not require a snapshot location.

Creating a secret for backup and snapshot locations

You create a Secret object for the backup and snapshot locations if they use the same credentials.

Prerequisites

  • Your object storage and cloud storage 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 secrets for different backup and snapshot location credentials

Configuring the Data Protection Application

You can configure Velero resource allocations and enable 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 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

Configuring NooBaa for disaster recovery on OpenShift Container Storage

If you use cluster storage for your NooBaa bucket backupStorageLocation on OpenShift Container Storage, configure NooBaa as an external object store.

Failure to configure NooBaa as an external object store might lead to backups not being available.
Procedure

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.