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Installing and configuring OADP with OCS - Application backup and restore | Backup and restore | OpenShift Container Platform 4.7
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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.

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 https://access.redhat.com/support/offerings/techpreview/.

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 4.7 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.

The default name of the secret is cloud-credentials, unless you specify a default plug-in for the backup storage provider.

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

If your backup and snapshot locations use different credentials, you 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:
  configuration:
    velero:
      defaultPlugins:
        - csi
        - openshift
    featureFlags:
    - EnableCSI
    restic:
      enable: true
  backupLocations:
    - velero:
        provider: gcp
        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 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:
        resourceAllocations:
          limits:
            cpu: "1" (1)
            memory: 512Mi (2)
          requests:
            cpu: 500m (3)
            memory: 256Mi (4)
    1 Specify the value in millicpus or CPU units. Default value is 500m or 1 CPU unit.
    2 Default value is 512Mi.
    3 Default value is 500m or 1 CPU unit.
    4 Default value is 256Mi.

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 Must be false to disable SSL/TLS security.

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:
        - gcp (1)
        - csi (2)
        - openshift (3)
    restic:
      enable: true (4)
  backupLocations:
    - velero:
        provider: gcp (5)
        default: true
        credential:
          key: cloud
          name: <default_secret> (6)
        objectStorage:
          bucket: <bucket_name> (7)
          prefix: <prefix> (8)
    1 Specify the default plug-in for the backup provider, for example, gcp, if appropriate.
    2 Specify the csi default plug-in if you use CSI snapshots to back up PVs. The csi plug-in uses the Velero CSI beta snapshot APIs. You do not need to configure a snapshot location.
    3 The openshift plug-in is mandatory in order to back up and restore namespaces on an OpenShift Container Platform cluster.
    4 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.
    5 Specify the backup provider.
    6 If you use a default plug-in 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.
    7 Specify a bucket as the backup storage location. If the bucket is not a dedicated bucket for Velero backups, you must specify a prefix.
    8 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)
    featureFlags:
    - EnableCSI (2)
    1 Add the csi default plug-in.
    2 Add the EnableCSI feature flag.