Version: release-0.8

Restore data from backup set

KubeBlocks supports restoring clusters from backups with the following instructions.

View backups.
For existing clusters, execute:
```
kbcli cluster list-backups mysql-cluster
```
If the cluster has been deleted, execute:
```
kbcli dataprotection list-backups
```

Restore clusters from a specific backup.

kbcli
kubectl

# Restore new cluster
kbcli cluster restore myrestore --backup mybackup
>
Cluster myrestore created

# View the status of the restored cluster
kbcli cluster list myrestore
NAME        NAMESPACE   CLUSTER-DEFINITION   VERSION           TERMINATION-POLICY   STATUS    CREATED-TIME
myrestore   default     apecloud-mysql       ac-mysql-8.0.30   Delete               Running   Oct 30,2023 16:26 UTC+0800

You can set the connectionPassword.annotations of the restored cluster as that of the original cluster. The password of the original cluster can be accessed by viewing the annotation of dataprotection.kubeblocks.io/connection-password in the backup YAML file.

$ kubectl apply -f - <<-'EOF'
apiVersion: apps.kubeblocks.io/v1alpha1
kind: Cluster
metadata:
  name: myrestore
  namespace: default
  annotations:
    kubeblocks.io/restore-from-backup: '{"mysql":{"name":"mybackup","namespace":"default","connectionPassword": "Bw1cR15mzfldc9hzGuK4m1BZQOzha6aBb1i9nlvoBdoE9to4"}}'
spec:
  clusterDefinitionRef: apecloud-mysql
  clusterVersionRef: ac-mysql-8.0.30
  terminationPolicy: WipeOut
  componentSpecs:
    - name: mysql
      componentDefRef: mysql
      replicas: 1
      volumeClaimTemplates:
        - name: data
          spec:
            accessModes:
              - ReadWriteOnce
            resources:
              requests:
                storage: 20Gi
EOF

Connect to the restored cluster for verification.
Once the cluster status is Running, run the following command to connect to the cluster for verification:
```
kbcli cluster connect myrestore
```