ApsaraDB for ClickHouse:Data restoration

Feature description

ApsaraDB for ClickHouse supports only data restoration for a cluster. ApsaraDB for ClickHouse does not support data restoration for a database or table. When you restore your data, all data in the backup set of your source cluster is restored to the new cluster. The new cluster is known as a clone cluster.

Prerequisites

Billing rules

Procedure

1. Log on to the ApsaraDB for ClickHouse console.

2. In the upper-left corner of the page, select the region where the cluster that you want to manage is deployed.

3. On the Clusters page, click the Clusters of Community-compatible Edition or Enterprise Edition Cluster tab based on the edition of the cluster that you want to manage, find the cluster, and then click the ID of the cluster.

4. In the left-side navigation pane of the page that appears, click Backup and Restoration.

5. On the Data Backup tab, find the backup you want to restore and click Data Recovery in the Actions column.

6. On the Clone Instance page, view the configurations of the source cluster and configure the following parameters for the clone cluster.

   Community-compatible Edition

   Parameter	Description
   Cluster Type	The edition of the source cluster.
   Clone Source Cluster	The ID of the source cluster.
   Clone Source Type	The data source type of the clone cluster.
   Clone Source Backup Set	The start time of the backup task. Note When the following conditions are met, this parameter is available: The Clone Source Type parameter is set to Backup Set. The Kernel Version of Current Instance parameter is set to a version other than the latest version.
   Region	The region where the clone cluster is deployed. By default, this setting of the clone cluster is the same as that of the source cluster and cannot be changed.
   Zone	The zone where the clone cluster is deployed.
   Network Type	The network type. You can only set the value of this parameter to Virtual Private Cloud. A virtual private cloud (VPC) is an isolated virtual network that provides high security.
   Virtual Private Cloud (VPC)	The VPC where the clone cluster is deployed.
   vSwitch	The vSwitch associated with the clone cluster.
   Kernel Version of Current Instance	If you set the Clone Source Type parameter to Backup Set, the value of this parameter is the kernel version of the clone cluster. By default, the kernel version of the clone cluster is the same as that of the source cluster and cannot be changed. If you set the Clone Source Type parameter to Real-time Replica, the value of this parameter is the kernel version of the source cluster and cannot be changed.
   Kernel Version of Destination Instance	The kernel version of the clone cluster. Note Only when you set the Clone Source Type parameter to Real-time Replica, this parameter is available.
   Edition	The number of replicas in the clone cluster. By default, this setting of the clone cluster is the same as that of the source cluster and cannot be changed. Valid values: High-availability: A shard has two replicas. If a replica in the shard fails, the other replica in the shard can take over services from the failed replica. Single-replica: A shard has only one replica. If the replica fails, the entire cluster becomes unavailable. The cluster can provide stable services only after the replica is recovered.
   Server Specifications	The shard specification of the clone cluster.
   Server Nodes	The number of shards in the clone cluster. By default, this setting of the clone cluster is the same as that of the source cluster and cannot be changed.
   Storage Type	The storage type of the clone cluster. Valid values: ESSD PL1 (Recommended), PL2 ESSD, PL3 ESSD, and PL0 ESSD: ESSDs are high-performance disks that are developed based on the next-generation distributed block storage architecture. ESSDs provide high read and write performance. A PL3 ESSD outperforms a PL2 ESSD. A PL2 ESSD outperforms a PL1 ESSD. A PL1 ESSD outperforms a PL0 ESSD. Ultra Disk: An ultra disk is a cost-effective disk that provides a medium rate of random input/output operations per second (IOPS) and high data reliability.
   Encryption Type	The encryption type of the clone cluster. Valid values: Disable Disk Encryption: Data on the disks of the clone cluster is not encrypted. Enable Disk Encryption: All data on the disks of the clone cluster is encrypted based on block storage. If you set this parameter to Enable Disk Encryption, you must select an encryption key.
   Storage Space	The storage capacity of the clone cluster. By default, this setting of the clone cluster is the same as that of the source cluster and cannot be changed.

   Enterprise Edition

   Parameter	Description
   Cluster Type	The edition of the source cluster.
   Clone Source Cluster	The ID of the source cluster.
   Clone Source Type	The source data type of the clone cluster. The default value is Backup Set.
   Clone Source Backup Set	The start time of the backup task.
   Deployment Method	The deployment method of the clone cluster.
   Region	The region where the clone cluster is deployed. By default, this setting of the clone cluster is the same as that of the source cluster and cannot be changed.
   Zone	The zone where the clone cluster is deployed. If you set the Deployment Method parameter to Multiple zones, you need to select three zones to deploy the cluster.
   Network Type	The network type. You can only set the value of this parameter to Virtual Private Cloud. A VPC is an isolated virtual network that provides high security.
   Virtual Private Cloud (VPC)	The VPC where the clone cluster is deployed.
   vSwitch	The vSwitch associated with the clone cluster.
   Maximum CCUs	The maximum number of ClickHouse Compute Units (CCUs) that is supported for the clone cluster.
   Minimum CCUs	The minimum number of CCUs that is supported for the clone cluster.

7. Read Terms of Service.

8. Click Buy Now.