Installing and configuring OADP - Backup and restore | Virtualization

Installing the OADP Operator
About backup and snapshot locations and their secrets
- Creating a default Secret
Configuring the Data Protection Application
- Setting Velero CPU and memory resource allocations
- Enabling self-signed CA certificates
Installing the Data Protection Application 1.2 and earlier
Installing the Data Protection Application
- Enabling CSI in the DataProtectionApplication CR
Uninstalling OADP

As a cluster administrator, you install the OpenShift API for Data Protection (OADP) by installing the OADP Operator. The Operator installs Velero 1.14.

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 4.13 by using Operator Lifecycle Manager (OLM).

The OADP Operator installs Velero 1.14.

Prerequisites

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

Procedure

In the OKD web console, click Operators → OperatorHub.
Use the Filter by keyword field to find the OADP Operator.
Select the OADP Operator and click Install.
Click Install to install the Operator in the openshift-adp project.
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 AWS S3-compatible object storage as a backup location, such as Multicloud Object Gateway; Red Hat Container Storage; Ceph RADOS Gateway, also known as Ceph Object Gateway; {odf-full}; or MinIO.

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 File System Backup (FSB), you do not need to specify a snapshot location because FSB 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 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.

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.

Kopia is an option in OADP 1.3 and later releases. You can use Kopia for file system backups, and Kopia is your only option for Data Mover cases with the built-in Data Mover.

Kopia is more resource intensive than Restic, and you might need to adjust the CPU and memory requirements accordingly.

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.

Using CA certificates with the velero command aliased for Velero deployment

You might want to use the Velero CLI without installing it locally on your system by creating an alias for it.

Prerequisites

You must be logged in to the OpenShift Container Platform cluster as a user with the cluster-admin role.

You must have the OpenShift CLI (oc) installed.

To use an aliased Velero command, run the following command:

$ alias velero='oc -n openshift-adp exec deployment/velero -c velero -it -- ./velero'

Check that the alias is working by running the following command:

Example

$ velero version
Client:
	Version: v1.12.1-OADP
	Git commit: -
Server:
	Version: v1.12.1-OADP

To use a CA certificate with this command, you can add a certificate to the Velero deployment by running the following commands:

$ CA_CERT=$(oc -n openshift-adp get dataprotectionapplications.oadp.openshift.io <dpa-name> -o jsonpath='{.spec.backupLocations[0].velero.objectStorage.caCert}')

$ [[ -n $CA_CERT ]] && echo "$CA_CERT" | base64 -d | oc exec -n openshift-adp -i deploy/velero -c velero -- bash -c "cat > /tmp/your-cacert.txt" || echo "DPA BSL has no caCert"

$ velero describe backup <backup_name> --details --cacert /tmp/<your_cacert>.txt

To fetch the backup logs, run the following command:
```
$ velero backup logs  <backup_name>  --cacert /tmp/<your_cacert.txt>
```
You can use these logs to view failures and warnings for the resources that you cannot back up.
If the Velero pod restarts, the /tmp/your-cacert.txt file disappears, and you must re-create the /tmp/your-cacert.txt file by re-running the commands from the previous step.
You can check if the /tmp/your-cacert.txt file still exists, in the file location where you stored it, by running the following command:
```
$ oc exec -n openshift-adp -i deploy/velero -c velero -- bash -c "ls /tmp/your-cacert.txt"
/tmp/your-cacert.txt
```

In a future release of OpenShift API for Data Protection (OADP), we plan to mount the certificate to the Velero pod so that this step is not required.

Installing the Data Protection Application 1.2 and earlier

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.

Velero creates a secret named velero-repo-credentials in the OADP namespace, which contains a default backup repository password. You can update the secret with your own password encoded as base64 before you run your first backup targeted to the backup repository. The value of the key to update is Data[repository-password].

After you create your DPA, the first time that you run a backup targeted to the backup repository, Velero creates a backup repository whose secret is velero-repo-credentials, which contains either the default password or the one you replaced it with. If you update the secret password after the first backup, the new password will not match the password in velero-repo-credentials, and therefore, Velero will not be able to connect with the older backups.

Procedure

Click Operators → Installed Operators and select the OADP Operator.
Under Provided APIs, click Create instance in the DataProtectionApplication box.
Click YAML View and update the parameters of the DataProtectionApplication manifest:
Click Create.

Verification

Verify the installation by viewing the OpenShift API for Data Protection (OADP) resources by running the following command:

$ 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

Verify that the DataProtectionApplication (DPA) is reconciled by running the following command:

$ oc get dpa dpa-sample -n openshift-adp -o jsonpath='{.status}'

Example output

{"conditions":[{"lastTransitionTime":"2023-10-27T01:23:57Z","message":"Reconcile complete","reason":"Complete","status":"True","type":"Reconciled"}]}

Verify the type is set to Reconciled.

Verify the backup storage location and confirm that the PHASE is Available by running the following command:

$ oc get backupstoragelocations.velero.io -n openshift-adp

Example output

NAME           PHASE       LAST VALIDATED   AGE     DEFAULT
dpa-sample-1   Available   1s               3d16h   true

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.

Procedure

Click Operators → Installed Operators and select the OADP Operator.
Under Provided APIs, click Create instance in the DataProtectionApplication box.
Click YAML View and update the parameters of the DataProtectionApplication manifest:
Click Create.

Verification

Verify the installation by viewing the OpenShift API for Data Protection (OADP) resources by running the following command:

$ 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/node-agent-9cq4q                                     1/1     Running   0          94s
pod/node-agent-m4lts                                     1/1     Running   0          94s
pod/node-agent-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/openshift-adp-velero-metrics-svc                   ClusterIP   172.30.10.0      <none>        8085/TCP   8h

NAME                        DESIRED   CURRENT   READY   UP-TO-DATE   AVAILABLE   NODE SELECTOR   AGE
daemonset.apps/node-agent    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

Verify that the DataProtectionApplication (DPA) is reconciled by running the following command:

$ oc get dpa dpa-sample -n openshift-adp -o jsonpath='{.status}'

Example output

{"conditions":[{"lastTransitionTime":"2023-10-27T01:23:57Z","message":"Reconcile complete","reason":"Complete","status":"True","type":"Reconciled"}]}

Verify the type is set to Reconciled.

Verify the backup storage location and confirm that the PHASE is Available by running the following command:

$ oc get backupstoragelocations.velero.io -n openshift-adp

Example output

NAME           PHASE       LAST VALIDATED   AGE     DEFAULT
dpa-sample-1   Available   1s               3d16h   true

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.