LB Server Group

You can create an LB Server Group through the Samsung Cloud Platform Console and connect it to a Load Balancer’s Listener.

Creating LB Server Group

Follow these steps to create an LB Server Group:

1. Click the All Services > Networking > Load Balancer menu. You will be navigated to the Load Balancer’s Service Home page.
2. On the Service Home page, click the LB Server Group menu. You will be navigated to the LB Server Group List page.
3. On the LB Server Group List page, click the Create LB Server Group button. You will be navigated to the Create LB Server Group page.
4. On the Create LB Server Group page, enter the information required for service creation and select detailed options.
   • In the Service Information area, enter or select the required information.

     Item	Required	Detailed Description
     LB Server Group Name	Required	LB Server Group resource name Enter 3 to 63 characters using uppercase/lowercase English letters, numbers, and special characters(-_) LB Server Group name cannot be duplicated within an Account
     VPC Name	Required	Select VPC to create LB Server Group Select VPC where the Load Balancer to which the LB Server Group will be connected is created
     Service Subnet Name	Required	Select VPC Subnet to create LB Server Group Select Subnet where the Load Balancer to which the LB Server Group will be connected is created
     Load Balancing	Required	Select load balancing algorithm Round Robin: Distribute sequentially to registered members Weighted round robin: Distribute sequentially in proportion to the weight assigned to each member Least Connection: Distribute to the member with the fewest connections Weighted least connection: Distribute to the member with the highest priority considering the weight assigned to each member and the number of connections IP Hash: Distribute to a specific member according to the client IP address hash value
     Protocol	Required	Select LB Server Group listening protocol Select protocol to forward to members of LB Server Group
     LB Health Check	Required	Select LB Health Check Select from LB Health Checks created in the same Service Subnet as the LB Server Group

     Table. LB Server Group service information input items
   • In the Additional Information area, enter or select the required information.

     Item	Required	Detailed Description
     Description	Optional	Enter resource description
     Tag	Optional	Add tag Can add up to 50 tags per resource

     Table. LB Server Group additional information input items
5. Review the created service information and estimated charges, then click the Create button.
   • When creation is complete, verify the created resource on the LB Server Group List page.

Viewing LB Server Group Detailed Information

You can view and modify resource lists and detailed information from the LB Server Group menu. The LB Server Group Detail page consists of Detailed Information, Connected Resources, Tags, and Task History tabs.

Follow these steps to view detailed information of the LB Server Group:

1. Click the All Services > Networking > Load Balancer menu. You will be navigated to the Load Balancer’s Service Home page.

2. On the Service Home page, click the LB Server Group menu. You will be navigated to the LB Server Group List page.

   • You can modify column display by clicking the Settings button in the upper right of the table.

     Item	Display	Detailed Description
     LB Server Group Name	Default	LB Server Group resource name
     Protocol	Default	LB Server Group protocol
     Load Balancer Name	Default	Load Balancer resource name connected to LB Server Group
     LB Health Check ID	Default	LB Health Check resource name used by LB Server Group
     Member Count	Default	Number of members registered in LB Server Group
     Creation Date	Default	LB Server Group creation date
     Status	Default	LB Server Group resource status

     Table. LB Server Group list items

3. On the LB Server Group List page, click the resource for which you want to view detailed information. You will be navigated to the LB Server Group Detail page.

   • At the top of the LB Server Group Detail page, status information and description of additional features are displayed.

     Item	Detailed Description
     Status	LB Server Group resource status Active: Service is normally activated Deleting: Processing service termination request Creating: Processing service creation request Error: Cannot check current status due to internal error If this status persists, contact Support Center Editing: Processing service modification request
     Delete LB Server Group	Delete LB Server Group resource

     Table. LB Server Group status information and additional feature items

Detailed Information

On the Detailed Information tab, you can view detailed information of the resource from the LB Server Group List and modify information if necessary.

Connected Resources

On the Connected Resources tab, you can view the list of members connected to the LB Server Group and add or delete members.

Tags

You can view, add, modify, or delete tag information for the resource selected from the LB Server Group List page.

Task History

On the Task History tab, you can view the task history of the selected resource.

Managing LB Server Group Resources

You can view the member list of the LB Server Group and add or delete members.

Adding Member

You can add a member to the LB Server Group to register server resources that will process client requests.

Follow these steps to add a member to the LB Server Group:

1. Click the All Services > Networking > Load Balancer menu. You will be navigated to the Load Balancer’s Service Home page.

2. On the Service Home page, click the LB Server Group menu. You will be navigated to the LB Server Group List page.

3. On the LB Server Group List page, click the resource for which you want to modify detailed information. You will be navigated to the LB Server Group Detail page.

4. On the LB Server Group Detail page, click the Connected Resources tab. You will be navigated to the Connected Resources tab page.

5. On the Connected Resources tab page, click the Add Member button in the upper right corner.

6. In the Add Member popup window, enter the required information, then click the OK button.

   Item	Required	Detailed Description
   LB Server Group Name	Default	LB Server Group name to add member to
   Target Server	Required	Server information to add as member Virtual Server/Bare Metal Server: Select from the list of servers created in the same VPC as the LB Server Group Direct IP Input: Enter server IP directly Can add target server by clicking the Add button
   Member Information	Required	Set member port and weight Member Name: Display server name and IP to be added as member Port: Port that the member will listen to Weight: Weight to be applied to load balancing When using Weighted Round Robin, Weighted Least Connection load balancing, must enter a value between 1 and 1000

   Table. LB Server Group member addition items

7. In the notification window, click the OK button.

8. Verify member addition on the Connected Resources tab.

Modifying Member

Clicking the member name in the member list navigates you to the Member Detail page. You can view detailed information of the member and change information by clicking the Edit icon.

Follow these steps to modify member detailed information:

1. Click the All Services > Networking > Load Balancer menu. You will be navigated to the Load Balancer’s Service Home page.
2. On the Service Home page, click the LB Server Group menu. You will be navigated to the LB Server Group List page.
3. On the LB Server Group List page, click the resource for which you want to modify detailed information. You will be navigated to the LB Server Group Detail page.
4. On the LB Server Group Detail page, click the Connected Resources tab. You will be navigated to the Connected Resources tab page.
5. On the Connected Resources tab page, click the member you want to modify. You will be navigated to the Member Detail page.
6. On the Member Detail page, modify the desired member information.

Modifying Weight

Can be modified when using weighted load balancing (Weighted Round Robin, Weighted Least Connection).

• Click the Edit icon on the Weight item. Enter the weight to modify in the modification window and click the OK button.

Modifying Port

To modify the member port, click the Edit icon on the Port item. Enter the port to modify in the modification window and click the OK button.

Modifying Enabled

To modify member enabled status, click the Edit icon on the Enabled item. Set the enabled status in the modification window and click the OK button.

Deleting Member

Follow these steps to delete a member that is not in use:

1. Click the All Services > Networking > Load Balancer menu. You will be navigated to the Load Balancer’s Service Home page.
2. On the Service Home page, click the LB Server Group menu. You will be navigated to the LB Server Group List page.
3. On the LB Server Group List page, click the resource for which you want to modify detailed information. You will be navigated to the LB Server Group Detail page.
4. On the LB Server Group Detail page, click the Connected Resources tab. You will be navigated to the Connected Resources tab page.
5. On the Connected Resources tab page, click the member you want to delete. You will be navigated to the Member Detail page.
6. On the Member Detail page, click the Delete Member button.
7. Verify member deletion on the Connected Resources tab.

Terminating LB Server Group

You can terminate an LB Server Group that is not in use. However, since it may affect application services, request termination after sufficient prior review.

Follow these steps to terminate the LB Server Group:

1. Click the All Services > Networking > Load Balancer menu. You will be navigated to the Load Balancer’s Service Home page.
2. On the Service Home page, click the LB Server Group menu. You will be navigated to the LB Server Group List page.
3. On the LB Server Group List, click the resource you want to terminate. You will be navigated to the LB Server Group Detail page.
4. On the LB Server Group Detail page, click the Delete LB Server Group button.
5. When termination is complete, verify resource termination on the LB Server Group List.