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Create and manage high availability group

High Availability Group is a feature that ensures high availability by grouping load balancer nodes with identical configurations that are deployed in different availability zones.
Group load balancer nodes that meet the High availability group requirements to maintain service continuity even if a failure occurs in one of the availability zones.

Create high availability group​

To create a high availability group, follow these steps:

  1. Go to KakaoCloud Console > Beyond Networking Service > Load Balancing > 고가용성 그룹.
  2. Select the [Create high availability group] button at the top right.
  3. In the Create high availability group screen, select the load balancer type and mode to associate with the high availability group. Then, choose the VPC and select load balancer nodes in each availability zone of that VPC that match the selected type and mode.
  4. After selecting and entering all configuration values, select the [Create] button. You can change the associated load balancer nodes after the group is created. However, the originally specified type and mode must remain unchanged.

View high availability group list​

  1. Go to KakaoCloud Console > Beyond Networking Service > Load Balancing > 고가용성 그룹.

  2. Check the list of high availability groups. You can use filters to search for specific groups.

    CategoryDescription
    NameName entered during creation
    IDID assigned during creation
    DNS nameDNS name generated based on the entered name. If the mode is Internet boundary, communication is possible using this DNS name
    ModePublic IP configuration
    - Internal: Has a private IP and handles internal VPC traffic
    - Internet boundary: Has a public IP and supports communication over internet
    Provisioning statusIndicates whether the group is successfully created or is being modified or deleted
    Operational statusIndicates whether the created group is in available state
    TypeApplication, Network, or Direct Server Return
    VPCVPC specified during group creation
    Availability zoneNumber of availability zones currently in use. Represents the number of associated load balancer nodes
    - Minimum of 1 can be set, but 2 or more are recommended for high availability
    Creation dateDate of group creation
    [More] iconIncludes actions such as modifying description, changing subnet and associated LB nodes, deleting group

View high availability group details​

  1. Go to KakaoCloud Console > Beyond Networking Service > Load Balancing > 고가용성 그룹.

  2. Select the high availability group to view.

  3. In the detail screen, check detailed information and network mapping.

    CategoryDescription
    DetailsView detailed information of the group
    Network mappingView network-related and associated load balancer node information

Modify description of high availability group​

  1. Go to KakaoCloud Console > Beyond Networking Service > Load Balancing > 고가용성 그룹.

  2. In the group list, select the [More] icon of the group whose description you want to modify.

  3. Select Modify description from the [More] menu.

  4. In the Modify description popup, change the description and select the [Apply] button.

Modify association with subnets and LB nodes​

  1. Go to KakaoCloud Console > Beyond Networking Service > Load Balancing > High Availability Group.

  2. In the group list, select the [More] icon of the group to modify subnet and associated load balancer nodes.

  3. Select Modify association with subnets and LB nodes from the [More] menu.

  4. In the popup window, configure the desired associations and select the [Modify] button.

    • Availability zone: Only one can be set per availability zone
    • Subnet: Displays subnets created in the selected availability zone of the specified VPC
    • LB node: Displays list of load balancer nodes in the selected subnet that match the type and mode specified at group creation
info
  • Minimum number of associated load balancer nodes is 1, but 2 or more must be configured to ensure high availability.
  • If the detailed settings (e.g., listener configuration) differ across nodes in different availability zones, the service may not function properly. Ensure consistent settings.
  • The kr-central-2 region supports 3 availability zones.

Delete high availability group​

  1. Go to KakaoCloud Console > Beyond Networking Service > Load Balancing > High Availability Group.

  2. In the group list, select the [More] icon of the group you want to delete.

  3. Select Delete high availability group from the [More] menu.

  4. In the Delete high availability group popup, enter the confirmation phrase and select the [Delete] button.