Manage backup

Backups are managed per cluster and are performed without stopping the cluster.

View backup list

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

1. Go to the KakaoCloud Console > Data Store > MemStore menu.
2. Click the Backup menu, then select either the Manual Backup or Automated Backup tab.

Manual Backup Tab

Item	Description
Name	Name of the backup
Status	Check the backup status - See Backup status values
Cluster name	Name of the associated cluster
Engine version	Redis OSS engine version of the source cluster
Cluster mode	Whether cluster mode was used. Restoration is only possible with the same setting
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

Automated Backup Tab

Item	Description
Name	Name of the backup
Status	Check the backup status - See Backup status values
Cluster name	Name of the associated cluster
Engine version	Redis OSS engine version of the source cluster
Cluster mode	Whether cluster mode was used. Restoration is only possible with the same setting
Backup file size	Size of the backup file
Cache size	Cache size of the backup
Automated backup retention	Retention period set in the associated cluster
Backup expiration	Time when the backup will be deleted based on the retention policy
Backup start time	Time when the backup started
[More]	Restore, Copy, Export, Delete

Configure automated backup

MemStore automatically performs one backup per day at a specified time.
This can be set when creating a cluster or through backup settings.
Automated backups require at least 2 healthy nodes.
Changes to the retention period or start time apply only to newly created backups after the change.

caution

Backup-in-progress blocks changes to source cluster nodes (add/delete/promote) and cluster deletion.

During cluster creation

1. Go to the KakaoCloud Console > Data Store > MemStore.
2. Click the Create Cluster button.
3. Enter automated backup settings and click Create.

Item	Field	Description
Automated backup	Enable backup option	Whether to enable daily backup
	Retention period	Backup retention period, selectable from 1 to 35 days
	Backup start time	Backup begins within 15 minutes from the selected time

While managing a cluster

1. In the KakaoCloud Console, go to the MemStore menu.
2. In the Cluster menu, click [More] on the cluster and select Configure automated backup.
3. Set values for automated backup and click Confirm.

Item	Field	Description
Automated backup	Enable backup option	Whether to enable daily backup
	Retention period	Backup retention period, selectable from 1 to 35 days
	Backup start time	Backup begins within 15 minutes from the selected time

Create manual backup

You can create a manual backup in the MemStore service.

info

Manual backups can only be created under the following conditions:

• Cluster must be in Running state
• At least one Replica must exist
• No ongoing backup operations
• At least 2 nodes must be present

caution

Backup-in-progress blocks changes to source cluster nodes (add/delete/promote) and cluster deletion.

1. Go to the KakaoCloud Console > Data Store > MemStore.
2. In the Cluster menu, select the cluster for backup.
3. Click the Backup menu, then click Create Backup.
4. Fill in the popup form and click Create.
5. Check the backup file under the Backup menu.

Restore

To use the restore feature in MemStore, a backup must already exist. You can create a new cluster using the backup.

info

You can only restore with the same cluster mode and the same or higher Redis engine version as the selected backup.

caution

If the cache size of the source backup exceeds 60% of the target cluster flavor's memory, the restore may fail.

Restore from cluster details

1. In the KakaoCloud Console, go to the MemStore menu.
2. In the Cluster menu, select the cluster to restore from.
3. In the Backup menu, click [More] on the backup and select Restore.
4. Fill in the Restore form and click Create.

Cluster mode enabled

Category	Item	Description
Restore source info		Information about the backup source file used for restoration. A new cluster will be created using this information.
Cluster mode setting		Whether to enable cluster mode
Basic settings	Cluster name	Name of the cluster
	Description (optional)	Description of the cluster, up to 100 characters
Redis compatibility	Engine version	Redis OSS engine version to be run on the nodes - Supported versions: 7.2.7, 7.2.6, 7.0.15, 6.2.17, 6.2.16, 6.2.5
	Port	Port used for Redis access - Default: 6379 - Can be set to any port from 2000 to 50000
User authentication		Whether to use user authentication for MemStore access - Disabled: Access via default account - Enabled: Access using provided ID and password
User account settings	ID	Required if authentication is enabled * Reserved account names are not allowed
	Password	- Format: 8 to 16 characters
Transport encryption (TLS)		Whether to use encrypted connection - Disabled: Plain connection - Enabled: Supports TLS 1.2. ca.crt file can be downloaded from the cluster details after creation
Parameter group		Choose a parameter group matching the engine version and cluster mode
Shard settings	Number of shards	Number of shards to be created - Cannot be modified when restoring with cluster mode enabled
	Nodes per shard	Number of nodes per shard - Minimum: 2, Maximum: 5
Node type		Choose a node type that provides sufficient memory for your environment - See Node types for details
Network settings	VPC	Select one of the pre-created user VPCs
	Subnet	Select one or more user-created subnets
	Security group	Create a new or use an existing security group - Multiple selections allowed
Shard placement		Select subnets where each node within a shard will be created
Automated backup	Backup option	Whether to enable daily automated backups - Requires at least 2 nodes
	Retention period	Choose from 1 to 35 days
	Backup start time	Backup starts within 15 minutes from the selected time

Cluster mode disabled

Category	Item	Description
Restore source info		Information about the backup source file used for restoration. A new cluster will be created using this information.
Cluster mode setting		Whether to enable cluster mode
Basic settings	Cluster name	Name of the cluster - Duplicate names are not allowed within the same project
	Description (optional)	Description of the cluster, up to 100 characters
Redis compatibility	Engine version	Redis OSS engine version to be run on the nodes - Supported: 7.2.7, 7.2.6, 7.0.15, 6.2.17, 6.2.16, 6.2.5, 5.0.6
	Port	Port used for Redis access - Default: 6379 - Can be set to any port from 2000 to 50000
User authentication		Whether to use user authentication for MemStore access - Disabled: Access via default account - Enabled: Access using provided ID and password * Not supported for Redis OSS 5 or lower
User account settings	ID	Required if authentication is enabled - Format: 1 to 32 lowercase letters or _ * Reserved account names are not allowed
	Password	- Format: 8 to 16 characters - Korean, spaces, and special characters /, ', ", @ are not allowed
Transport encryption (TLS)		Whether to use encrypted connection - Disabled: Plain connection - Enabled: Supports TLS 1.2. ca.crt file can be downloaded from the cluster details after creation * Not supported for Redis OSS 5 or lower
Parameter group		Choose a parameter group matching the engine version and cluster mode
Number of nodes	Node count	Desired number of nodes - If high availability is enabled: 2 to 6 * 1 Primary and 1–5 Replica nodes - If high availability is disabled: 1 to 6 * 1 Primary and 0–5 Replica nodes Example: For 1 Primary and 2 Replicas, enter 3
	High availability setting	Whether to enable high availability - If enabled, failed nodes are automatically promoted and replaced to maintain node count
Node type		Choose a node type that provides sufficient memory for your environment - See Node types for details
Network settings	VPC	Select one of the pre-created user VPCs
	Subnet	Select one or more user-created subnets
	Security group	Create a new or use an existing security group - Multiple selections allowed
Node placement		Select subnets for each node based on its role
Automated backup	Backup option	Whether to enable daily automated backups
	Retention period	Choose from 1 to 35 days
	Backup start time	Backup starts within 15 minutes from the selected time

Restore from cluster creation

For more details, see Create cluster.

Copy

1. In the KakaoCloud Console, go to the MemStore menu.
2. In the Backup menu, select the backup to copy.
3. Click Copy.
4. Enter the new backup name in the Copy Backup window and click Confirm.

Export

1. In the KakaoCloud Console, go to the MemStore menu.
2. In the Backup menu, select the backup to export to Object Storage.
3. Click Export.

Item	Field	Description
Selected backup name		Name of the selected backup
Exported backup name		Name of the backup in Object Storage - For cluster mode, add shard number and repeat this for each shard path
Object Storage	S3 connection	Whether to use S3 - If not using, path should be swifta:// format. S3 support will be available later
	Bucket name	Name of the bucket in Object Storage
	Path (optional)	Subdirectory within the bucket - Path must be under 396 bytes
	Full path	Full combined path of bucket and directory

4. In the Export window, enter the backup name and path, then click Confirm.

info

• If export fails, you can check details in Cloud Trail.

Delete backup

You can delete backups (manual or automated) that are no longer needed.

caution

Once deleted, backups are permanently removed and cannot be restored.

1. In the KakaoCloud Console, go to the MemStore menu.
2. In the Cluster menu, select the cluster containing the backup.
3. In the Backup menu, click [More] on the backup and select Delete backup.
4. In the Delete Backup popup, fill in the form and click Delete.