Manage backup

Backups are managed at the cluster level and are performed without stopping the cluster.

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Currently, backup and restore are available only when cluster mode is disabled.

View backup list

You can view the list of backups created in MemStore for the corresponding project.

1. Go to KakaoCloud Console > Data Store > MemStore menu.

2. Click the Backup menu and select either the Manual backup or Automatic backup tab.

   Manual backup tab

   Item	Description
   Name	Name of the backup
   Status	Check the backup status - For more details, refer to Backup status
   Cluster name	Name of the cluster associated with the backup
   Engine version	Redis OSS engine version of the backup source cluster
   Backup file size	Size of the backup file
   Cache size	Cache size of the backup
   Backup start time	Time when the backup started
   [More]	Restore, Copy, Export, Delete

   Automatic backup tab

   Item	Description
   Name	Name of the backup
   Status	Check the backup status - For more details, refer to Backup status
   Cluster name	Name of the cluster associated with the backup
   Engine version	Redis OSS engine version of the backup source cluster
   Backup file size	Size of the backup file
   Cache size	Cache size of the backup
   Backup start time	Time when the backup started
   Backup expiration time	Time when the backup expires and is deleted according to the backup retention period
   [More]	Restore, Copy, Export

Configure automatic backup

Automatic backups are performed once a day at a specified time in the MemStore service.
They can be configured when creating a cluster or through automatic backup settings.
Automatic backup settings can only be configured when cluster mode is disabled and when the number of nodes is at least 2.

caution

During backup creation, changes to the source cluster nodes (add/delete/promote) or cluster deletion are not allowed.

During cluster creation

1. Go to KakaoCloud Console > Data Store > MemStore menu.

2. Click the [Create cluster] button.

3. Enter the automatic backup setting information in the Create cluster screen, and then click the [Create] button.

   Item	Category	Description
   Automatic backup	Automatic backup option	Select whether to enable the automatic backup option. When enabled, a backup is automatically performed once per day.
   	Backup retention period	Select the backup retention period, from a minimum of 1 day to a maximum of 35 days
   	Automatic backup start time	Select the start time for automatic backup. The backup will begin within 15 minutes of the selected time.

While managing a cluster

1. Go to the MemStore menu on the KakaoCloud Console.

2. In the Cluster menu, select the [More] icon for the cluster with automatic backup enabled, then select Set automatic backup.

3. Configure the necessary values for automatic backup and click the [OK] button.

   Item	Category	Description
   Automatic backup	Automatic backup option	Select whether to enable the automatic backup option. When enabled, a backup is automatically performed once per day.
   	Backup retention period	Select the backup retention period, from a minimum of 1 day to a maximum of 35 days
   	Automatic backup start time	Select the start time for automatic backup. The backup will begin within 15 minutes of the selected time.

Create manual backup

You can manually create a backup in the MemStore service.

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Backups can currently be created only under the following conditions:

• The cluster must be in Running status.
• A Replica must be present.
• No ongoing backup should exist for the cluster.
• Backup is only supported when Cluster Mode is not in use.
• There must be at least 2 nodes.

caution

During backup creation, changes to the source cluster nodes (add/delete/promote) or cluster deletion are not allowed.

1. Go to KakaoCloud Console > Data Store > MemStore menu.
2. In the Cluster menu, select the cluster to create a backup.
3. Click the Backup menu and then click the [Create Backup] button.
4. In the Create Backup popup, enter the required information and click the [Create] button.
5. In the Backup menu, check the created backup file.

Restore

To use the restore function in the MemStore service, a backup must be created in advance. You can create a new cluster using the backup.

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Restoration is available only when cluster mode is disabled.

caution

If the cache size of the source backup is greater than 60% of the memory of the target cluster flavor, the restoration may fail.

Restore from cluster details

1. Go to the MemStore menu on the KakaoCloud Console.

2. In the Cluster menu, select the cluster to use the backup.

3. In the Backup menu, click the [More] icon of the backup you want to restore and select Restore.

4. Enter the required information in the Restore screen and click the [Create] button.

   Category	Item	Description
   Restore information		Information of the backup file used for the restore. A new cluster will be created using the specified information.
   Cluster mode setting		Select whether to enable or disable cluster mode. Currently, only Disabled mode is supported for restoration.
   Basic settings	Cluster name	Name of the cluster - The same cluster name cannot be created within the same project
   	Description (optional)	Enter a description for the cluster (up to 100 characters)
   Redis compatibility settings	Engine version	Set the version of the Redis OSS engine to run on the node - Currently, 6.2.5, 5.0.6 versions are supported. More engine versions will be supported in the future.
   	Port	Set the port to be used for Redis access - Currently, only the default port 6379 is supported. It will be improved to allow users to set custom ports.
   User authentication		Select whether to use user authentication for MemStore resource access If not used, access is possible with the default account. If used, access is possible with the entered ID and password.
   User account settings	ID	Enter when using user authentication - Format: 1 to 32 characters, lowercase letters, and _ only * Reserved account names cannot be used.
   	Password	- Format: 8 to 16 characters - Cannot use Korean, spaces, or special characters /, ', ", @
   Parameter group		Select the parameter group that matches the selected engine version and cluster mode
   Number of nodes	Number of nodes	Number of nodes to be created - When using high availability: Minimum 2 ~ Maximum 6, entered as an integer _ Creates 1 Primary node and 1 to 5 Replica nodes - When not using high availability: 1 ~ 6, entered as an integer _ Creates 1 Primary node and 0 to 5 Replica nodes Example: To create 1 Primary node and 2 Replica nodes, enter 3 in the number of nodes.
   	High availability	Select whether to use high availability in the event of a node failure - If high availability is enabled, a new node is created and the node count is maintained when a node fails.
   Node type		Select a node type that provides sufficient memory for optimal service performance - For more details, refer to Node type
   Network settings	VPC	Select one of the pre-created user VPCs
   	Subnet	Select a pre-created user Subnet
   	Security group	Create a new Security Group or select an existing Security Group to apply to the cluster - Multiple selections possible
   Node placement		Select the Subnet where each node will be created based on the selected network settings
   Automatic backup	Automatic backup option	Select whether to enable the automatic backup option. When enabled, a backup is automatically performed once per day
   	Backup retention period	Select the backup retention period, from a minimum of 1 day to a maximum of 35 days
   	Automatic backup start time	Select the start time for automatic backup. The backup will begin within 15 minutes of the selected time.

Restore from cluster creation

For more details, refer to Create cluster.

Copy

1. Go to the MemStore menu on the KakaoCloud Console.
2. In the Backup menu, select the backup you want to copy.
3. Click the [Copy] button.
4. In the Copy Backup screen, enter the name of the backup to be copied and click the [OK] button.

Export

1. Go to the MemStore menu on the KakaoCloud Console.
2. In the Backup menu, select the backup you want to export to Object Storage.
3. Click the [Export] button.
4. In the Export screen, enter the backup name and path to be exported, then click the [OK] button.

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The total path, including the backup to be exported and the backup file path, can only be up to 396 bytes.

Delete backup

You can delete backups that are no longer needed.

Delete automatic backup

Automatic backups are automatically deleted when the cluster is deleted or when the backup retention period expires.

Manual deletion of automatic backups will be supported in the future.

Delete manual backup

caution

When a backup is deleted, it is completely returned, and the deletion cannot be undone.

1. Go to the MemStore menu on the KakaoCloud Console.
2. In the Cluster menu, select the cluster containing the backup you want to delete.
3. In the Backup menu, click the [More] icon of the backup you want to delete and select Delete backup.
4. In the Delete backup popup, enter the required information and click the [Delete] button.