Installing and configuring OADP

As a cluster administrator, you install the OpenShift API for Data Protection (OADP) by installing the OADP Operator. The Operator installs Velero 1.9.

You create a default Secret for your backup storage provider and then you install the Data Protection Application.

Installing the OADP Operator

You install the OpenShift API for Data Protection (OADP) Operator on OKD 4.12 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 OKD 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.

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.

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:
            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 the backup and snapshot locations use different credentials, you must create two Secrets:

  • Secret with a custom name for the backup location. You add this Secret to the DataProtectionApplication CR.

  • Secret with the default name, cloud-credentials, for the snapshot location. This Secret is not referenced in the DataProtectionApplication CR.

    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:

   apiVersion: oadp.openshift.io/v1alpha1
   kind: DataProtectionApplication
   metadata:
     name: <dpa_sample>
     namespace: openshift-adp
   spec:
     configuration:
       velero:
         defaultPlugins:
           - kubevirt (1)
           - gcp (2)
           - csi (3)
           - openshift (4)
       restic:
         enable: true (5)
         podConfig:
           nodeSelector: <node selector> (6)
     backupLocations:
       - velero:
           provider: gcp (7)
           default: true
           credential:
             key: cloud
             name: <default_secret> (8)
           objectStorage:
             bucket: <bucket_name> (9)
             prefix: <prefix> (10)

   1	The kubevirt plugin is mandatory for OKD Virtualization.
   2	Specify the plugin for the backup provider, for example, gcp, if it exists.
   3	The csi plugin is mandatory for backing up PVs with CSI snapshots. The csi plugin uses the Velero CSI beta snapshot APIs. You do not need to configure a snapshot location.
   4	The openshift plugin is mandatory.
   5	Set to false if you want to disable the Restic installation. Restic deploys a daemon set, which means that each worker node has Restic pods running. You configure Restic for backups by adding spec.defaultVolumesToRestic: true to the Backup CR.
   6	Specify the node selector to be supplied to Restic podSpec
   7	Specify the backup provider.
   8	If you use a default plugin for the backup provider, you must specify the correct default name for the Secret, for example, cloud-credentials-gcp. If you specify a custom name, the custom name is used for the backup location. If you do not specify a Secret name, the default name is used.
   9	Specify a bucket as the backup storage location. If the bucket is not a dedicated bucket for Velero backups, you must specify a prefix.
   10	Specify a prefix for Velero backups, for example, velero, if the bucket is used for multiple purposes.

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/oadp-velero-sample-1-aws-registry-5d6968cbdd-d5w9k   1/1     Running   0          95s
   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
   service/oadp-velero-sample-1-aws-registry-svc              ClusterIP   172.30.130.230   <none>        5000/TCP   95s
   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/oadp-velero-sample-1-aws-registry   1/1     1            1           96s
   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/oadp-velero-sample-1-aws-registry-5d6968cbdd   1         1         1       96s
   replicaset.apps/velero-588db7f655                              1         1         1       96s

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.

Uninstalling OADP

You uninstall the OpenShift API for Data Protection (OADP) by deleting the OADP Operator. See Deleting Operators from a cluster for details.