VM Backup, Snapshot & Restore

VM Backup & Restore

Available as of v0.3.0

VM backups are created from the Virtual Machines page. The VM backup volumes will be stored in the Backup Target (an NFS or S3 server), and they can be used to either restore a new VM or replace an existing VM.

note

A backup target must be set up. For more information, see Configure Backup Target. If the backup target has not been set, you’ll be prompted with a message to do so.

Configure Backup Target

A backup target is an endpoint used to access a backup store in Harvester. A backup store is an NFS server or S3 compatible server that stores the backups of VM volumes. The backup target can be set at Settings > backup-target.

Parameter	Type	Description
Type	string	Choose S3 or NFS
Endpoint	string	A hostname or an IP address. It can be left empty for AWS S3.
BucketName	string	Name of the bucket
BucketRegion	string	Region of the bucket
AccessKeyID	string	A user-id that uniquely identifies your account
SecretAccessKey	string	The password to your account
Certificate	string	Paste to use a self-signed SSL certificate of your S3 server
VirtualHostedStyle	bool	Use VirtualHostedStyle access only; e.g., Alibaba Cloud (Aliyun) OSS

Create a VM backup

1. Once the backup target is set, go to the Virtual Machines page.
2. Click Take Backup of the VM actions to create a new VM backup.
3. Set a custom backup name and click Create to create a new VM backup.

Result: The backup is created. You will receive a notification message, and you can also go to the Backup & Snapshot > VM Backups page to view all VM backups.

The State will be set to Ready once the backup is complete.

Users can either restore a new VM or replace an existing VM using this backup.

Restore a new VM using a backup

To restore a new VM from a backup, follow these steps:

1. Go to the VM Backups page.
2. Click the Restore Backup button at the top right.
3. Specify the new VM name and click Create.
4. A new VM will be restored using the backup volumes and metadata, and you can access it from the Virtual Machines page.

Replace an existing VM using a backup

You can replace an existing VM using the backup with the same VM backup target.

You can choose to either delete or retain the previous volumes. By default, all previous volumes are deleted.

Requirements: The VM must exist and is required to be in the powered-off status.

1. Go to the VM Backups page.
2. Click the Restore Backup button at the top right.
3. Click Replace Existing.
4. You can view the restore process from the Virtual Machines page.

Restore a new VM on another Harvester cluster

Available as of v1.0.0

Users can now restore a new VM on another cluster by leveraging the VM metadata & content backup feature.

prerequisites

You must manually configure the virtual machine images with the same name on the new cluster first, otherwise the virtual machines will be failed to recover.

Upload the same VM images to a new cluster

1. Check the existing image name (normally starts with image-) and create the same one on the new cluster.

$ kubectl get vmimages -A
NAMESPACE   NAME                               DISPLAY-NAME                              SIZE         AGE
default     image-79hdq                        focal-server-cloudimg-amd64.img           566886400    5h36m
default     image-l7924                        harvester-v1.0.0-rc2-amd64.iso            3964551168   137m
default     image-lvqxn                        opensuse-leap-15.3.x86_64-nocloud.qcow2   568524800    5h35m

2. Apply a VM image YAML with the same name and content in the new cluster.

$ cat <<EOF | kubectl apply -f -
apiVersion: harvesterhci.io/v1beta1
kind: VirtualMachineImage
metadata:
  name: image-lvqxn
  namespace: default
spec:
  displayName: opensuse-leap-15.3.x86_64-nocloud.qcow2
  pvcName: ""
  pvcNamespace: ""
  sourceType: download
  url: http://download.opensuse.org/repositories/Cloud:/Images:/Leap_15.3/images/openSUSE-Leap-15.3.x86_64-NoCloud.qcow2
EOF

Restore a new VM in a new cluster

1. Setup the same backup target in a new cluster. And the backup controller will automatically sync the backup metadata to the new cluster.
2. Go to the VM Backups page.
3. Select the synced VM backup metadata and choose to restore a new VM with a specified VM name.
4. A new VM will be restored using the backup volumes and metadata. You can access it from the Virtual Machines page.

VM Snapshot & Restore

Available as of v1.1.0

VM snapshots are created from the Virtual Machines page. The VM snapshot volumes will be stored in the cluster, and they can be used to either restore a new VM or replace an existing VM.

Create a VM snapshot

1. Go to the Virtual Machines page.
2. Click Take VM Snapshot of the VM actions to create a new VM snapshot.
3. Set a custom snapshot name and click Create to create a new VM snapshot.

Result: The snapshot is created. You can also go to the Backup & Snapshot > VM Snapshots page to view all VM snapshots.

The State will be set to Ready once the snapshot is complete.

Users can either restore a new VM or replace an existing VM using this snapshot.

Restore a new VM using a snapshot

To restore a new VM from a snapshot, follow these steps:

1. Go to the VM Snapshots page.
2. Click the Restore Snapshot button at the top right.
3. Specify the new VM name and click Create.
4. A new VM will be restored using the snapshot volumes and metadata, and you can access it from the Virtual Machines page.

Replace an existing VM using a snapshot

You can replace an existing VM using the snapshot.

note

You can only choose to retain the previous volumes.

1. Go to the VM Snapshots page.
2. Click the Restore Snapshot button at the top right.
3. Click Replace Existing.
4. You can view the restore process from the Virtual Machines page.