OADP features and plugins - OADP Application backup and restore | Backup and restore

OADP features
OADP plugins
About OADP Velero plugins
Supported architectures for OADP
OADP support for IBM Power and IBM Z
- OADP support for target backup locations using IBM Power
- OADP testing and support for target backup locations using IBM Z

OpenShift API for Data Protection (OADP) features provide options for backing up and restoring applications.

The default plugins enable Velero to integrate with certain cloud providers and to back up and restore OpenShift Container Platform resources.

OADP features

OpenShift API for Data Protection (OADP) supports the following features:

Backup

You can use OADP to back up all applications on the OpenShift Platform, or you can filter the resources by type, namespace, or label.

OADP backs up Kubernetes objects and internal images by saving them as an archive file on object storage. OADP backs up persistent volumes (PVs) by creating snapshots with the native cloud snapshot API or with the Container Storage Interface (CSI). For cloud providers that do not support snapshots, OADP backs up resources and PV data with Restic.

You must exclude Operators from the backup of an application for backup and restore to succeed.

Restore

You can restore resources and PVs from a backup. You can restore all objects in a backup or filter the objects by namespace, PV, or label.

You must exclude Operators from the backup of an application for backup and restore to succeed.

Schedule

You can schedule backups at specified intervals.

Hooks

You can use hooks to run commands in a container on a pod, for example, fsfreeze to freeze a file system. You can configure a hook to run before or after a backup or restore. Restore hooks can run in an init container or in the application container.

OADP plugins

The OpenShift API for Data Protection (OADP) provides default Velero plugins that are integrated with storage providers to support backup and snapshot operations. You can create custom plugins based on the Velero plugins.

OADP also provides plugins for OpenShift Container Platform resource backups, OpenShift Virtualization resource backups, and Container Storage Interface (CSI) snapshots.

Table 1. OADP plugins
OADP plugin	Function	Storage location
`aws`	Backs up and restores Kubernetes objects.	AWS S3
`aws`	Backs up and restores volumes with snapshots.	AWS EBS
`azure`	Backs up and restores Kubernetes objects.	Microsoft Azure Blob storage
`azure`	Backs up and restores volumes with snapshots.	Microsoft Azure Managed Disks
`gcp`	Backs up and restores Kubernetes objects.	Google Cloud Storage
`gcp`	Backs up and restores volumes with snapshots.	Google Compute Engine Disks
`openshift`	Backs up and restores OpenShift Container Platform resources. ^[1]	Object store
`kubevirt`	Backs up and restores OpenShift Virtualization resources. ^[2]	Object store
`csi`	Backs up and restores volumes with CSI snapshots. ^[3]	Cloud storage that supports CSI snapshots
`vsm`	VolumeSnapshotMover relocates snapshots from the cluster into an object store to be used during a restore process to recover stateful applications, in situations such as cluster deletion. ^[4]	Object store

Mandatory.
Virtual machine disks are backed up with CSI snapshots or Restic.
The csi plugin uses the Kubernetes CSI snapshot API.
- OADP 1.1 or later uses snapshot.storage.k8s.io/v1
- OADP 1.0 uses snapshot.storage.k8s.io/v1beta1
OADP 1.2 only.

About OADP Velero plugins

You can configure two types of plugins when you install Velero:

Default cloud provider plugins
Custom plugins

Both types of plugin are optional, but most users configure at least one cloud provider plugin.

Default Velero cloud provider plugins

You can install any of the following default Velero cloud provider plugins when you configure the oadp_v1alpha1_dpa.yaml file during deployment:

aws (Amazon Web Services)
gcp (Google Cloud Platform)
azure (Microsoft Azure)
openshift (OpenShift Velero plugin)
csi (Container Storage Interface)
kubevirt (KubeVirt)

You specify the desired default plugins in the oadp_v1alpha1_dpa.yaml file during deployment.

Example file

The following .yaml file installs the openshift, aws, azure, and gcp plugins:

 apiVersion: oadp.openshift.io/v1alpha1
 kind: DataProtectionApplication
 metadata:
   name: dpa-sample
 spec:
   configuration:
     velero:
       defaultPlugins:
       - openshift
       - aws
       - azure
       - gcp

Custom Velero plugins

You can install a custom Velero plugin by specifying the plugin image and name when you configure the oadp_v1alpha1_dpa.yaml file during deployment.

You specify the desired custom plugins in the oadp_v1alpha1_dpa.yaml file during deployment.

Example file

The following .yaml file installs the default openshift, azure, and gcp plugins and a custom plugin that has the name custom-plugin-example and the image quay.io/example-repo/custom-velero-plugin:

apiVersion: oadp.openshift.io/v1alpha1
kind: DataProtectionApplication
metadata:
 name: dpa-sample
spec:
 configuration:
   velero:
     defaultPlugins:
     - openshift
     - azure
     - gcp
     customPlugins:
     - name: custom-plugin-example
       image: quay.io/example-repo/custom-velero-plugin

Velero plugins returning "received EOF, stopping recv loop" message

Velero plugins are started as separate processes. After the Velero operation has completed, either successfully or not, they exit. Receiving a received EOF, stopping recv loop message in the debug logs indicates that a plugin operation has completed. It does not mean that an error has occurred.

Supported architectures for OADP

OpenShift API for Data Protection (OADP) supports the following architectures:

AMD64
ARM64
PPC64le
s390x

OADP 1.2.0 and later versions support the ARM64 architecture.

OADP support for IBM Power and IBM Z

OpenShift API for Data Protection (OADP) is platform neutral. The information that follows relates only to IBM Power and to IBM Z.

OADP 1.1.0 was tested successfully against OpenShift Container Platform 4.11 for both IBM Power and IBM Z. The sections that follow give testing and support information for OADP 1.1.0 in terms of backup locations for these systems.

OADP support for target backup locations using IBM Power

IBM Power running with OpenShift Container Platform 4.11 and 4.12, and OpenShift API for Data Protection (OADP) 1.1.2 was tested successfully against an AWS S3 backup location target. Although the test involved only an AWS S3 target, Red Hat supports running IBM Power with OpenShift Container Platform 4.11 and 4.12, and OADP 1.1.2 against all non-AWS S3 backup location targets as well.

OADP testing and support for target backup locations using IBM Z

IBM Z running with OpenShift Container Platform 4.11 and 4.12, and OpenShift API for Data Protection (OADP) 1.1.2 was tested successfully against an AWS S3 backup location target. Although the test involved only an AWS S3 target, Red Hat supports running IBM Z with OpenShift Container Platform 4.11 and 4.12, and OADP 1.1.2 against all non-AWS S3 backup location targets as well.