从备份集中恢复数据

KubeBlocks 支持从备份集中恢复数据。

1. 查看备份。

   kbcli

   对已有的集群，执行：

   kbcli cluster list-backups mysql-cluster

   如果集群已经被删除，执行：

   kbcli dataprotection list-backups

   kubectl

   kubectl get backups

2. 从特定的备份中恢复集群。

   kbcli

   # 恢复集群
   kbcli cluster restore myrestore --backup mybackup
   >
   Cluster myrestore created
   
   # 查看被恢复集群的状态
   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

   kubectl

   可使用原集群的 connection password 作为恢复的集群的 connectionPassword.annotations 值。可从备份 YAML 文件中的 dataprotection.kubeblocks.io/connection-password annotation 中获取原集群的 connection password。

   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

3. 连接被恢复集群，进行验证。

   当集群状态为 Running 后，连接集群进行验证。