How-to guides

You can create a Load Balancer service by entering essential information and selecting detailed options through the Samsung Cloud Platform Console.

Creating a Load Balancer

You can create and use a Load Balancer service through the Samsung Cloud Platform Console.

Follow these steps to create a Load Balancer:

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 Create Load Balancer button. You will be navigated to the Create Load Balancer page.
3. On the Create Load Balancer page, enter the information required for service creation and select detailed options.
   • In the Service Information area, enter or select the required information.

4. Review the created service information and estimated charges, then click the Create button.
   • When creation is complete, verify the created resource on the Load Balancer List page.
     Notice

     • The Load Balancer service does not provide access control functionality for Service IP and service ports.
       
       • When creating a Load Balancer, we recommend selecting Use Firewall to manage communication between client and Load Balancer, and between Load Balancer and members using Firewall rules, and using Save Firewall Log to store access logs.
     • If you set the Firewall log storage feature when creating a service, you must set up the log storage first. If the log storage setup is not complete, you cannot create the Load Balancer service.
     Caution

     If using Firewall, you must add rules required for Load Balancer communication. Pay attention to the direction for each purpose when registering rules.
     

     • If you do not add rules, the Load Balancer service will not function properly.

     

     Purpose	Source IP	Destination IP	Protocol	Destination Port/Type	Direction
     Client → LB Connection	Client IP	LB Service IP	Listener Protocol	Listener Service Port	Outbound
     LB → Member Connection	LB Source NAT IP	LB Server Group Member IP	LB Server Group Protocol	Member Port	Inbound
     LB → Member Health Check	LB Health Check IP	LB Server Group Member IP	Health Check Protocol	Health Check Port If health check port and member port are different, register member port	Inbound

     Figure and Table. Adding Load Balancer Firewall Rules

Viewing Load Balancer Detailed Information

For Load Balancer services, you can view and modify resource lists and detailed information from the Load Balancer menu. The Load Balancer Detail page consists of Detailed Information, Connected Resources, Tags, and Task History tabs.

Follow these steps to view detailed information about the Load Balancer service:

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 Load Balancer menu. You will be navigated to the Load Balancer List page.
3. On the Load Balancer List page, click the resource for which you want to view detailed information. You will be navigated to the Load Balancer Detail page.
   • The Load Balancer Detail page displays status information and additional feature information, and consists of Detailed Information, Connected Resources, Tags, Task History tabs.

     Item	Detailed Description
     Status	Load Balancer 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 Editing: Processing service modification request
     Service Termination	Delete Load Balancer resource

     Table. Load Balancer status information and additional feature items

Detailed Information

On the Detailed Information tab, you can view and modify the detailed information of the resource selected from the Load Balancer List, and modify necessary information.

Connected Resources

On the Connected Resources tab, you can view the list of Listeners connected to the Load Balancer, and create or terminate Listeners.

• By selecting a Listener item on the Connected Resources tab, you can navigate to the Listener Detail page to view detailed information and modify or delete it.
• By clicking the Edit icon on the Listener Detail page items, you can modify the information.

Tags

You can view, add, modify, or delete tag information for the resource selected from the Load Balancer List page.

Task History

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

Managing Load Balancer Resources

You can manage Load Balancer resources such as creating and deleting Listeners.

Creating a Listener

Create a Listener on the Load Balancer to receive client requests and process traffic according to Listener settings.

Creating a Listener in L4 Load Balancer

Follow these steps to create a Listener in an L4 Load Balancer:

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 Load Balancer menu. You will be navigated to the Load Balancer List page.
3. On the Load Balancer List page, click the Load Balancer resource where you want to create a Listener. You will be navigated to the Load Balancer Detail page.
4. On the Load Balancer 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 Create Listener button in the upper right corner.
6. In the Service Information area, enter or select the required information.
   • The information you can enter varies depending on the Protocol.

7. In the Additional Information area, enter or select the required information.

8. Review the created service information and click the Create button.
   • When creation is complete, verify the created resource on the Connected Resources tab of the Load Balancer Detail page.

Creating a Listener in L7 Load Balancer

Follow these steps to create a Listener in an L7 Load Balancer:

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 Load Balancer menu. You will be navigated to the Load Balancer List page.
3. On the Load Balancer List page, click the Load Balancer resource where you want to create a Listener. You will be navigated to the Load Balancer Detail page.
4. On the Load Balancer 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 Create Listener button in the upper right corner.
6. In the Service Information area, enter or select the required information.
   • The information you can enter varies depending on the Protocol.

7. In the Additional Information area, enter or select the required information.

8. Review the created service information and click the Create button.
   • When creation is complete, verify the created resource on the Connected Resources tab of the Load Balancer Detail page.

Supported Items by SSL Security Level

The list of TLS versions and Cipher Suites supported by SSL security level in the Listener is as follows.

Viewing Listener Detailed Information

You can view and modify detailed information of a Listener by selecting it from the Connected Resources tab on the Load Balancer Detail page.

Follow these steps to view detailed information of the Listener:

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 Load Balancer menu. You will be navigated to the Load Balancer List page.
3. On the Load Balancer List page, click the resource for which you want to view detailed information. You will be navigated to the Load Balancer Detail page.
4. On the Load Balancer Detail page, click the Connected Resources tab.
5. From the connected resources list, click the Listener for which you want to view detailed information. You will be navigated to the Listener Detail page.
   • The Listener Detail page displays status information and additional feature information, and consists of Detailed Information, Tags, Task History tabs.

Detailed Information

On the Detailed Information tab, you can view the detailed information of the Listener and modify necessary information. The detailed information varies depending on the Load Balancer in use.

L4 Load Balancer Detailed Information

L7 Load Balancer Detailed Information

Tags

You can view, add, modify, or delete tag information for the Listener.

Task History

You can view the task history of the Listener.

Modifying Routing Rules

You can modify routing rules of a Listener from the Connected Resources tab on the Load Balancer Detail page.

Follow these steps to modify routing rules of the Listener:

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 Load Balancer menu. You will be navigated to the Load Balancer List page.
3. On the Load Balancer List page, click the resource for which you want to view detailed information. You will be navigated to the Load Balancer Detail page.
4. On the Load Balancer Detail page, click the Connected Resources tab.
5. From the connected resources list, click the Listener for which you want to add routing conditions. You will be navigated to the Listener Detail page.
6. On the Listener Detail page, click the Edit icon on the Routing Rules item. The Modify Routing Rules popup window will open.
7. Modify routing rules according to the routing action, then click the OK button.

   Item	Required	Detailed Description
   Routing Action	-	Currently set routing method (cannot modify)
   Routing Condition	Required	Can modify routing conditions when routing action is LB Server Group Forward URL Path: Modify request URL path and LB Server Group (can add up to 20) Host Header: Modify request host and LB Server Group (can add up to 20)
   Redirection Target	Required	Can modify redirection target when routing action is URL Redirection Path: Can modify change URL path Host: Can modify change host Protocol/Port: Cannot modify (only HTTP → HTTPS redirection possible)

   Table. Listener routing rule modification items

Deleting a Listener

Follow these steps to delete a Listener 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 Load Balancer menu. You will be navigated to the Load Balancer List page.
3. On the Load Balancer List page, click the Load Balancer resource from which you want to delete a Listener. You will be navigated to the Load Balancer Detail page.
4. On the Load Balancer 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 Listener you want to delete. You will be navigated to the Listener Detail page.
6. On the Listener Detail page, click the Delete Listener button.

Terminating Load Balancer

You can terminate a Load Balancer that is not in use to reduce costs. However, since it may affect application services, request termination after sufficient prior review.

Follow these steps to terminate a Load Balancer:

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 Load Balancer menu. You will be navigated to the Load Balancer List page.
3. On the Load Balancer List page, click the resource you want to terminate. You will be navigated to the Load Balancer Detail page.
4. On the Load Balancer Detail page, click the Terminate Service button.
5. When termination is complete, verify resource termination on the Load Balancer List.