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How-to guides

1: LB server group
2: LB health check

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

Create Load Balancer

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

To create a Load Balancer, follow these steps.

All Services > Networking > Load Balancer click the menu. 1. Go to the Load Balancer’s Service Home page.
Service Home on the page, click the Create Load Balancer button. 2. Go to the Load Balancer creation page.
On the Load Balancer creation page, enter the information required to create the service and select detailed options.
- Enter or select the required information in the Service Information Input area.

Category	Required	Detailed description
Load Balancer name	Required	Load Balancer resource name using English uppercase and lowercase letters, numbers, and special characters (`-_`) entered with a length of 3 to 63 characters
Service Category	Required	Load Balancer service type Select L4 or L7 Since the service types are distinguished, you cannot configure TCP and HTTP listeners on a single Load Balancer
VPC name	Required	VPC where the Load Balancer will be created Select from the VPC list + New creation It can be selected after creation
Service Subnet name	Required	VPC Subnet where the Load Balancer will be created Select from the list of Subnets created in the selected VPC Can be selected regardless of Subnet type (Public/Private) or classification (Primary/Secondary) + New Creation can be selected after creation when chosen By default, a Load Balancer can be created in up to three Service Subnets per VPC The number of Service Subnets is calculated based on Primary Subnets If a Load Balancer is created in Secondary Subnet A-1 or A-2 under Primary Subnet A, one Service Subnet is consumed After creating Load Balancers in Primary Subnets A, B, and C, additional creation is possible in Secondary Subnet A-1 If Load Balancers are created in Secondary Subnets A-1, B-1, and C-1, creating a Load Balancer in Primary Subnet D is not allowed Load Balancer creation is prohibited if the number of Service Subnets per VPC exceeds the limit or if the Subnet lacks sufficient available IPs for Load Balancer creation Creating a Load Balancer in a Subnet for the first time requires 4 available IPs If a Load Balancer already exists in the Subnet, only 1 available IP is required If a Load Balancer is already created in the selected Service Subnet, the initially configured Availability Zone, Source NAT IP, health check IP, and Firewall information are displayed
Availability Zone 1	Required	Select the Availability Zone to create the Load Balancer among the Availability Zones where the Service Subnet is created If only Availability Zone 1 is selected in a Multi-AZ Subnet, the Load Balancer is configured as Single-AZ When creating an additional Load Balancer in the same Service Subnet, selecting an Availability Zone other than the initially configured one is not allowed
Availability Zone 2	Required	This is an item provided only when a Multi-AZ Subnet is selected for the Service Subnet, and when configuring the Load Balancer as Multi-AZ, set When configured as Multi-AZ, Availability Zone 1 becomes Active to handle all service requests, and if Availability Zone 1 fails, it automatically switches to Availability Zone 2
Service IP	Required	Select automatic allocation or manual entry for the service IP exposed to the client When manually entering, input one IP from the Service Subnet range in IP address format When automatically allocating, assign automatically from the IP allocation range of the selected Service Subnet
Public NAT IP	Select	When allowing service access from external (Internet), select the Public IP to connect to the Service IP Configurable if the selected VPC is connected to an Internet Gateway + New can be created and selected when chosen The Public NAT IP of a Multi-AZ Load Balancer can be selected from the Public IPs created in Availability Zone 1
Source NAT IP	Required	Select automatic allocation or manual entry for the IP used by the Load Balancer for server communication When manually entering, input one IP from the Service Subnet range in IP address format When automatically allocating, the IP is automatically assigned from the IP allocation range of the selected Service Subnet IP cannot be modified after creating the Load Balancer
Health check IP	Required	Select either automatic allocation or manual entry for the IP used for member health checks in the Load Balancer When entering manually, input two IPs from the Service Subnet range separated by , in IP address format When automatically allocating, the IP is assigned automatically from the IP allocation range of the selected Service Subnet A Multi-AZ Load Balancer requires a total of 4 IPs, with 2 IPs per Availability Zone IP cannot be modified after the Load Balancer is created
Use firewall	Selection	Select whether to enable the firewall for Load Balancer access control Enabled when creating the firewall in an active state Disabled when creating the firewall in an inactive state (can be enabled from the Firewall menu)
Store firewall logs	Select	Select whether to store Firewall logs Enabled stores Firewall logs in the bucket set in the log storage For more details, refer to Firewall 로그 저장 사용하기

Table. Load Balancer service information input items

Reference

Multi-AZ Load Balancer will be subject to additional creation charges after September 2026. Please refer to this for your use.

In the Additional Information Input area, enter or select the required information.
Category
Required status
Detailed description
Explanation Select Enter resource description
tag Select Add tags
Up to 50 tags can be added per resource
Table. Load Balancer additional information input fields

Check the created service information and the estimated billing amount, and click the Create button.

Once creation is complete, check the created resources on the Load Balancer List page.

Information

Load Balancer service does not provide access control for Service IP and service ports.
- When creating a Load Balancer, select Use Firewall to manage communication between the client and the Load Balancer, and between the Load Balancer and members with firewall rules, and enable Save Firewall Logs to store access logs, which is recommended.
When creating a service and using the Firewall log storage feature, you must configure the log repository first. * If the log storage configuration is not completed, you cannot create a Load Balancer service.

Caution

If you use a firewall, you must add the rules required for Load Balancer communication. Register the rules, paying attention to the direction for each purpose.

If you do not add a rule, the Load Balancer service will not operate correctly.

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 When the health check port and member port are different, register the member port	Inbound

Figure and table. Add Load Balancer Firewall rule

Load Balancer View detailed information

The Load Balancer service can be viewed and edited for resource lists and detailed information in the Load Balancer menu. The Load Balancer Details page consists of the Details, Connected Resources, Tags, Operation History tabs.

To view detailed information about the Load Balancer service, follow these steps.

All Services > Networking > Load Balancer Click the menu. 1. Navigate to the Load Balancer’s Service Home page.
On the Service Home page, click the Load Balancer menu. 2. Go to the Load Balancer List page.

On the Load Balancer List page, click the resource for which you want to view detailed information. 3. Go to the Load Balancer Details page.

Load Balancer Details page displays status information and additional feature information, and consists of Detailed Information, Connected Resources, Tags, Operation History tabs.

Category	Detailed description
Status	Load Balancer resource status Active: Service is active and operating normally Deleting: Service termination request is being processed Creating: Service creation request is being processed Error: Unable to determine current status due to internal error Editing: Service modification request is being processed
Service cancellation	Delete Load Balancer resource

Category

Detailed description

Status

Load Balancer resource status

Active: Service is active and operating normally

Deleting: Service termination request is being processed

Creating: Service creation request is being processed

Error: Unable to determine current status due to internal error

Editing: Service modification request is being processed

Service cancellation

Delete Load Balancer resource

Table. Load Balancer status information and additional feature items

Detailed Information

In the Detailed Information tab, you can view the detailed information of the resource selected from the Load Balancer list and edit the necessary information.

Category	Detailed description
service	Service name
Resource Type	Resource Type
SRN	Unique resource ID in Samsung Cloud Platform
Resource name	Resource name
Resource ID	Unique resource ID in the service
Creation Date/Time	Service creation date and time
Modification date	Service modification date and time
Constructor	User requesting service creation
Modifier	Service modification request user
Load Balancer name	Load Balancer name
Service IP	Service IP of the Load Balancer (used for client communication from the Load Balancer)
Service Category	Load Balancer service type
Source NAT IP	Source NAT IP of the Load Balancer (used for server communication from the Load Balancer)
VPC name	Resource name of the VPC where the Load Balancer was created Click the resource name to go to the detail page
Service Subnet name	Subnet where the Load Balancer is created resource name resource name click to go to the detail page
Public NAT IP	Load Balancer’s Public NAT IP Edit Click the icon to modify the settings
Private NAT IP	Load Balancer’s Private NAT IP Use when NATing the Service IP to the customer’s subnet configured on the Private NAT Click the Edit icon to modify the settings
Health check IP	Load Balancer’s health check IP (used by the Load Balancer for member health checks)
Availability Zone 1	Availability Zone information of the created Load Balancer
Availability Zone 2	Information about the Availability Zone where the Load Balancer was created Displayed when configured as a Multi-AZ Load Balancer
Explanation	Additional information or description about the Load Balancer Edit click the icon to edit
Firewall name	Firewall resource name connected to Load Balancer Click the resource name to go to the detail page

Table. Load Balancer detailed information tab items

Connected resource

Connected Resources tab allows you to view the list of Listeners attached to the Load Balancer and to create or delete Listeners.

In the Connected Resources tab, when you select the Listener item, you are taken to the Listener Details page where you can view, edit, and delete the detailed information.
Listener Details page item, clicking the Edit icon lets you modify the information.

Category	Detailed description
Create Listener	Create Listener button
Listener name	Listener resource name
Routing rules	Routing rules set on the Listener Routing Action: Traffic handling method (LB server group forwarding or URL redirection) Setting Value: Setting value applied to the routing action When the routing action is LB server group forwarding, display the name of the associated LB server group If there is more than one associated LB server group, it is shown as a number, and clicking the number reveals the list of LB server groups When the routing action is URL redirection, display the redirection target information
Protocol	Protocol that the Listener receives
Port	The service port that the Listener receives
Creation Date/Time	Listener creation time
Status	Listener resource status
Delete	Listener Delete Button

Table. Load Balancer connected resource list items

Category	Detailed description
Tag list	Tag list You can view the Key, Value information of the tag Up to 50 tags can be added per resource When entering a tag, search the existing list of created Keys and Values and select

Job History

Task History tab allows you to view the task history of the selected resource.

Category	Detailed description
Work History	Task execution details
Work date and time	Task execution date and time
Resource Type	Resource Type
Resource name	Load Balancer name
Work result	Task execution result (success/failure)
Operator Information	User information of the person who performed the task

Table. Load Balancer operation history list items

Load Balancer Resource Management

You can manage resources such as creating and deleting a Load Balancer’s Listener.

Create Listener

Create a Listener on the Load Balancer to receive client requests and handle traffic according to the Listener configuration.

information

The protocol that receives client requests varies depending on the Load Balancer service type.

L4 Load Balancer case: TCP, UDP, TLS, TCP_PROXY protocols
L7 When using an L7 Load Balancer: HTTP, HTTPS protocols

Creating a Listener in L4 Load Balancer

To create a Listener in the L4 Load Balancer, follow these steps.

All Services > Networking > Load Balancer Click the menu. 1. Navigate to the Load Balancer’s Service Home page.
On the Service Home page, click the Load Balancer menu. 2. Navigate to the Load Balancer List page.
Load Balancer List page, click the Load Balancer resource to create a Listener. 3. Load Balancer Details page.
On the Load Balancer Details page, click the Connected Resources tab. 4. Navigate to the Connected Resources tab page.
On the Connected Resources tab page, click the Create Listener button in the upper right.
Enter or select the required information in the Service Information Input area.
- The information that can be entered varies depending on the protocol.

Category	Required status	Detailed description
Load Balancer	Required	Load Balancer resource name where the Listener will be created
Listener name	Required	Listener resource name
Protocol	Required	Select Listener receive protocol TCP, UDP, TLS, TCP_PROXY choose from
Service port	Required	Listener receive port input Enter a value between 1 and 65,534
Routing rules	Required	Routing rule configuration Routing Action: L4 Load Balancer is fixed to LB server group forwarding LB server group: Select an LB server group to handle client requests Can select from LB server groups created in the same Service Subnet as the Load Balancer LB server groups already used by other Load Balancers cannot be selected For more details, refer to LB 서버 그룹 생성하기
Session keep-alive time	Required	Client session timeout setting Default 120 seconds When using TCP, TLS, TCP_PROXY protocols, you can enter values in 60‑second increments between 60 and 3,600 seconds When using UDP protocol, you can enter values in 60‑second increments between 60 and 180 seconds
Proxy Protocol	Selection	When used, the client IP is added to the proxy protocol header and forwarded to the server TCP, TLS, TCP_PROXY protocols can be set when used TCP Proxy Protocol v1 support (client IP is transmitted in plain text) To use this feature properly, the server must also support Proxy Protocol
persistence	Required	Select session persistence (Sticky Session) method (available when using TCP, TLS, TCP_PROXY protocols) Source IP: Fix the connection server based on the client IP address
SSL certificate	Selection	Select the default encryption certificate and security level (TLS protocol can be configured when used) Select the certificate to use for the client and SSL/TLS Handshake Default certificate (required): Choose from certificates registered in the Certificate Manager service SSL security level (required): Choose the security level when encrypting client connections (refer to SSL security level support items for the list of TLS versions and Cipher Suites per level) High: Supports Cipher Suites of TLS 1.3 version Medium: Supports Cipher Suites including TLS 1.2 version
Server SSL security level	Required	When configuring End-to-End SSL, select the security level (available when using the TLS protocol) LB - If communication between servers is not encrypted, select Do not use

Table. Enter Listener service information - when using L4 Load Balancer

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

Category	Required status	Detailed description
Explanation	Select	Enter resource description
tag	Selection	Add tag Up to 50 tags can be added per resource

Table. Listener additional information input items

Check the created service information and click the Create button.
- After creation is complete, check the created resources on the Load Balancer Details page’s Connected Resources tab.

Creating a Listener in L7 Load Balancer

To create a Listener in the L7 Load Balancer, follow these steps.

All Services > Networking > Load Balancer menu, click it. 1. Navigate to the Load Balancer’s Service Home page.
On the Service Home page, click the Load Balancer menu. 2. Navigate to the Load Balancer List page.
Load Balancer List page, click the Load Balancer resource to create a Listener. 3. Go to the Load Balancer Details page.
On the Load Balancer Details page, click the Connected Resources tab. 4. Go to the Connected Resources tab page.
On the Connected Resources tab page, click the Create Listener button in the upper right.
In the Service Information Input area, enter or select the required information.
- According to the Protocol, the information that can be entered varies.

Category	Required status	Detailed description
Load Balancer	Required	Load Balancer resource name where the Listener is created
Listener name	Required	Listener resource name
Protocol	Required	Select Listener receiving protocol HTTP, HTTPS choose between
Service port	Required	Listener receive port input Enter a value between 1 and 65,534
Routing Rules > Routing Action	Required	Select routing processing method LB server group forwarding: Forward traffic to the LB server group URL redirection: LB sends a redirection response to the client
Routing Rules > Routing Conditions	Required	When the routing action is LB server group forwarding, configure the LB server group per routing condition URL path: Configure the LB server group per URL path Host header: Set the LB server group based on the Host value Redirect target: When the routing action is URL redirection, configure the redirect response URL: Enter redirect URL information (full URL including scheme required) Protocol/Port: Enter redirect protocol and port information (configurable when the Listener protocol is HTTP) For detailed information on adding routing rules, see Modify routing rules reference
persistence	Select	Select session persistence (Sticky Session) method (available when the routing action is LB server group forwarding) Source IP: Fixed connection server based on client IP address Cookie: Fixed connection server based on the cookie inserted by the Load Balancer
Listener timeout setting > Session keep-alive time	Select	Session idle-timeout setting Use when enabled, input can be set between 60 and 3,600 seconds Use → Not use: since it cannot be modified, it is recommended to use it selectively for required services
Listener timeout setting > HTTP connection timeout	Select	Client connection keep-alive time, response timeout setting used when input possible between 1 and 120 seconds enabled → disabled; since it cannot be modified, it is recommended to use it only for services that require it
X-Forwarded-For	Select	Set whether to insert client IP information when used, add client IP address to X-Forwarded-For header
X-Forwarded-Proto	Selection	Set whether to insert client request protocol information used when adding the client request protocol to the X-Forwarded-Proto header
X-Forwarded-Port	Selection	Set insertion of client request port information Use when adding the client request port to the X-Forwarded-Port header
HTTP 2.0	Selection	Configure HTTP/2 usage when connecting client and server use when enabled, includes HTTP/2 and also supports lower versions
SSL certificate	Selection	Select encrypted certificate and security level (configurable when the Listener protocol is HTTPS) Select the certificate to use for the client SSL/TLS handshake Default certificate (required): Choose from certificates registered in the Certificate Manager service SSL security level (required): Select the security level when encrypting client connections (refer to SSL security level support items for TLS version and Cipher Suite lists by security level) High: Supports Cipher Suites of TLS 1.3 version Medium: Supports Cipher Suites including TLS 1.2 version If a multi-domain service is required, add domain-specific certificates to the SNI certificate item after creating the Listener
Server SSL security level	Required	Select security level when configuring End-to-End SSL (available when the Listener protocol is HTTPS) LB - Select Not used when communication between servers is not encrypted

Table. Enter Listener service information - when using L7 Load Balancer

Reference

Among routing conditions, the URL path matching method is start-with(prefix match).

If the starting string of the HTTP Request header Path matches the routing condition’s requested URL path, the corresponding routing rule is applied.
Example: Request URL Path when entered as /api,
- Matching cases: /api/users, /api/v1/login, /api/images/logo.png
- When not matched: /auth/api/, /API/users

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

Category	required status	Detailed description
Explanation	Selection	Enter resource description
tag	Selection	Add tags Maximum of 50 tags can be added per resource

Table. Listener additional information input fields

Verify the created service information and click the Create button.
- When creation is complete, verify the created resources on the Load Balancer Details page’s Connected Resources tab.

Supported Items by SSL Security Level

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

Security level	TLS version	Cipher Suite (encryption algorithm)
High	TLS 1.3	TLS13_AES_128_GCM_SHA256 TLS13_AES_256_GCM_SHA384 TLS13_CHACHA20_POLY1305_SHA256
Normal/Low	Normal: TLS 1.3, 1.2 Low: TLS 1.3, 1.2, 1.1	TLS13_AES_128_GCM_SHA256 TLS13_AES_256_GCM_SHA384 TLS13_CHACHA20_POLY1305_SHA256 RC4-MD5 RC4-SHA DES-CBC3-SHA DHE-RSA-AES128-GCM-SHA256 DHE-RSA-AES256-GCM-SHA384 DHE-RSA-CHACHA20-PLY1305 ECDHE-RSA-AES128-SHA ECDHE-RSA-AES256-SHA ECDHE-RSA-AES128-SHA256 ECDHE-RSA-AES256-SHA384 ECDHE-RSA-CHACHA20-POLY135 ECDHE-ECDSA-AES128-SHA ECDHE-ECDSA-AES256-SHA ECDHE-ECDSA-AES128-SHA256 ECDHE-ECDSA-AES256-SHA384 ECDHE-ECDSA-AES128-GCM-SHA256 ECDHE-ECDSA-AES256-GCM-SHA384 ECDHE-ECDSA-CHACHA20-POLY1305

Table. Supported items by SSL security level

Check Listener detailed information

On the Load Balancer Details page, you can select the Listener in the Connected Resources tab to view and edit its detailed information.

To view detailed information about the Listener, follow these steps.

All Services > Networking > Load Balancer menu, click it. 1. Navigate to the Load Balancer’s Service Home page.
On the Service Home page, click the Load Balancer menu. 2. Go to the Load Balancer List page.
On the Load Balancer List page, click the resource to view detailed information. 3. Navigate to the Load Balancer Details page.
Click the Connected Resources tab on the Load Balancer Details page.
Click the Listener to view detailed information in the list of connected resources. 5. Navigate to the Listener Details page.
- Listener Details The page displays status information and additional feature information, and is composed of the Details, Tags, Activity History tabs.

Category	Detailed description
status	Listener 상태 Active: the service is properly activated Deleting: processing a service termination request Creating: processing a service creation request Error: cannot determine the current status due to an internal error Editing: processing a service modification request
Delete Listener	Delete Listener

Category

Detailed description

status

Listener 상태

Active: the service is properly activated

Deleting: processing a service termination request

Creating: processing a service creation request

Error: cannot determine the current status due to an internal error

Editing: processing a service modification request

Delete Listener

Table. Listener status information and additional feature items

Detailed Information

Detailed Information tab allows you to view the Listener’s detailed information and edit necessary details. Detailed information varies depending on the Load Balancer in use.

L4 Load Balancer Detailed Information

Category	Detailed description
service	Service name
Resource Type	Resource Type
SRN	Unique resource ID in Samsung Cloud Platform
Resource name	Resource name
Resource ID	Unique resource ID in the service
Constructor	Listener creation request user
Creation Date/Time	Listener creation time
Modifier	User requesting listener modification
Modification date	Listener modification timestamp
Listener name	Listener name
Protocol	Listener usage protocol
Port	Listener port
Session keep-alive time	TCP session idle-timeout information Edit Click the icon to edit
Proxy Protocol	Whether to insert proxy protocol header Edit Click the icon to edit
persistence	Session stickiness (Sticky Session) status Edit icon can be clicked to edit
Routing rules	Routing action and routing condition information Click the Edit icon to modify the LB server group
SSL certificate	Default certificate and SSL security level, expiration date and time information Edit Click the icon to edit If a registered SNI certificate exists, the default certificate cannot be edited (editable after deleting the SNI certificate)
SNI certificate	SNI certificate details Click the Edit icon to add and reference SNI information and certificates
Server SSL security level	Server connection encryption status Edit icon can be clicked to edit
Explanation	Additional information about the Listener Edit icon can be clicked to edit

Table. Listener Details Tab - When Using L4 Load Balancer

L7 Load Balancer Detailed Information

Category	Detailed description
service	Service name
Resource Type	Resource Type
SRN	Unique resource ID in Samsung Cloud Platform
Resource name	Resource Name
Resource ID	Unique resource ID in the service
Constructor	Listener creation request user
Creation Date/Time	Listener creation time
Modifier	User requesting listener modification
Modification date and time	Listener modification timestamp
Listener name	Listener name
Protocol	Listener usage protocol
Port	Listener port
Session keep-alive time	TCP session idle timeout information Edit Click the icon to change from unused → used and modify the input value
Client connection keep-alive time	HTTP client connection keep-alive time Edit Click the icon to change from unused → used and modify the input value
Server response latency	HTTP server response latency Edit Click the icon to change from unused → used and modify the input value
X-Forwarded-For	Insert X-Forwarded-For header Edit icon can be clicked to edit
X-Forwarded-Proto	X-Forwarded-Proto header insertion option Edit icon can be clicked to edit
X-Forwarded-Port	X-Forwarded-Port header insertion option Edit Click the edit icon to modify
persistence	Sticky Session setting Edit icon can be clicked to edit
HTTP 2.0	HTTP/2 usage Click the Edit icon to modify
Routing rules	Routing action and routing condition settings Edit icon can be clicked to modify routing condition or redirection target
SSL certificate	Default certificate and SSL security level, expiration date and time information Edit icon can be clicked to modify If a registered SNI certificate exists, the default certificate cannot be modified (modification possible after deleting the SNI certificate)
SNI certificate	SNI certificate details Edit Click the icon to add and reference SNI information and certificates
Server SSL security level	Whether the server connection is encrypted Edit click the icon to edit
Add response header	HTTP Response header insertion Edit icon can be clicked to set
Explanation	Additional information about the Listener Edit Click the icon to edit

Table. Listener Details Tab - When Using L7 Load Balancer

Category	Detailed description
Tag list	Tag list You can view the Key, Value information of a tag Up to 50 tags can be added per resource When entering tags, you can search and select from the list of previously created Keys and Values

Job History

You can view the Listener’s operation history.

Category	Detailed description
Work history	Task execution details
Work date and time	Task execution date and time
Resource Type	Resource Type
Resource name	Listener name
Task result	Task execution result (success/failure)
Operator Information	User information of the person who performed the task

Table. Listener Work History Tab Items

Modify routing rules

On the Load Balancer Details page, you can modify the Listener’s routing rules in the Connected Resources tab.

To modify the Listener’s routing rules, follow these steps.

All Services > Networking > Load Balancer menu, click it. 1. Navigate to the Service Home page of the Load Balancer.
On the Service Home page, click the Load Balancer menu. 2. Load Balancer List navigate to the page.
On the Load Balancer list page, click the resource whose detailed information you want to view. 3. Go to the Load Balancer Details page.
On the Load Balancer Details page, click the Connected Resources tab.
In the list of connected resources, click the Listener to modify the routing condition. 5. Go to the Listener Details page.
On the Listener Details page, click the Edit icon for the Routing Rules item. 6. Routing Rule Modification popup opens.

After modifying the routing rule according to the routing action, click the Confirm button.

Category	Required status	Detailed description
Routing action	-	Current routing method (cannot be modified)
Routing condition	Required	If the routing action is LB server group forwarding, you can modify the sub-settings of the routing condition URL path: Modify request URL path and LB server group (up to 20 additions possible) host header: Modify request host and LB server group (up to 20 additions possible)
Redirect target	Required	If the routing action is URL redirection, the redirection target can be modified URL: modify redirection URL Protocol/Port: modify redirection port

Category

Required status

Detailed description

Routing action

Current routing method (cannot be modified)

Routing condition

Required

If the routing action is LB server group forwarding, you can modify the sub-settings of the routing condition

URL path: Modify request URL path and LB server group (up to 20 additions possible)

host header: Modify request host and LB server group (up to 20 additions possible)

Redirect target

Required

If the routing action is URL redirection, the redirection target can be modified

URL: modify redirection URL

Protocol/Port: modify redirection port

Table. Listener routing rule modification items

Add or modify response header

On the Load Balancer Details page, you can modify the addition of response headers for the Listener in the Connected Resources tab.

To modify the Listener’s response header addition, follow these steps.

All Services > Networking > Load Balancer menu, click it. 1. Go to the Load Balancer’s Service Home page.
On the Service Home page, click the Load Balancer menu. 2. Navigate to the Load Balancer List page.
Load Balancer List page, click the resource to view detailed information. 3. Navigate to the Load Balancer Details page.
Click the Connected Resources tab on the Load Balancer Details page.
Click the Listener to edit the response header addition in the list of connected resources. 5. Navigate to the Listener Details page.
On the Listener Details page, click the Edit icon of the Add Response Header item. 6. Response Header Add/Edit The popup window opens.

After setting the header to insert, click the Confirm button.

Category	required status	Detailed description
HTTP Strict Transport Security (HSTS) header	Select	Select whether to insert the HSTS header (enforce HTTPS connections to enhance security) When enabled, set max-age and subdomain applicability max-age: Enter a value between 1 and 63072000 (up to 2 years) Subdomain applicability: enabled applies to all subdomains

Table. Response Header Add/Modify Items

Delete Listener

To delete an unused Listener, follow these steps.

All Services > Networking > Load Balancer menu, click it. 1. Navigate to the Load Balancer’s Service Home page.
On the Service Home page, click the Load Balancer menu. 2. Go to the Load Balancer List page.
On the Load Balancer List page, click the Load Balancer resource from which you want to delete the Listener. 3. Navigate to the Load Balancer Details page.
On the Load Balancer Details page, click the Connected Resources tab. 4. Go to the Connected Resources tab page.
On the Connected Resources tab page, click the Listener you want to delete. 5. Go to the Listener Details page.
On the Listener Details page, click the Delete Listener button.

Terminate Load Balancer

You can terminate unused Load Balancers to reduce costs. However, because it may impact the application service, please request termination only after a thorough prior review.

Caution

In the following cases, the Load Balancer cannot be terminated.

If there is a Listener attached to the Load Balancer: Delete the attached Listener on the Load Balancer Details page under the Connected Resources tab.
If you are using a Public NAT IP with the Load Balancer: Load Balancer details page’s Detailed Information tab, deselect the Public NAT IP in use.
If you are using a Private NAT IP with a Load Balancer: In the Load Balancer Details page’s Details tab, deselect the Private NAT IP in use.
If there are rules registered in the Firewall: Delete the Firewall’s rules in use from the Load Balancer Details page’s Detailed Information tab.
If connected to a PrivateLink Service: Check the connected Load Balancer on the PrivateLink Service Details page.

To cancel the Load Balancer, follow the steps below.

All Services > Networking > Load Balancer click the menu. 1. Go to the Load Balancer’s Service Home page.
On the Service Home page, click the Load Balancer menu. 2. Go to the Load Balancer list page.
Load Balancer List page, click the resource to terminate. 3. Go to the Load Balancer Details page.
On the Load Balancer Details page, click the Cancel Service button.
After termination is complete, verify the resource termination status in the Load Balancer list.

1 - LB server group

Users can create an LB server group through the Samsung Cloud Platform Console and connect it to a Load Balancer’s Listener.

Create LB server group

Reference

You can create up to 1,000 LB server groups per account.

Follow these steps to create an LB server group.

All Services > Networking > Load Balancer click the menu. 1. Navigate to the Load Balancer’s Service Home page.
On the Service Home page, click the LB Server Group menu. 2. Go to the LB server group list page.
Click the Create LB Server Group button on the LB Server Group List page. 3. Go to the Create LB Server Group page.

On the Create LB Server Group page, enter the information required to create a service and select detailed options.

Enter or select the required information in the Service Information Input area.

Category	required status	Detailed description
LB server group name	Required	LB server group resource name using English uppercase and lowercase letters, numbers, special characters(`-_`) to enter 3 ~ 63 characters LB server group name must be unique within the Account
VPC name	Required	Select the VPC to create the LB server group Select the VPC where the Load Balancer that will connect to the LB server group is created
Service Subnet name	Required	Select the VPC Subnet to create the LB server group Select the Subnet where the Load Balancer that will connect to the LB server group is created
Load balancing	Required	Load Balancing Algorithm Selection Round Robin: Distribute sequentially among 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 higher‑priority member considering each member’s weight and connection count Source IP/Port Hash: Distribute to a specific member based on the client IP address and port hash value Source IP Hash: Distribute to a specific member based on the source IP address hash value
Protocol	Required	Select the receiving protocol for the LB server group Select the protocol to forward to members of the LB server group
LB health check	Required	Select LB health check Select an LB health check created in the Service Subnet that is the same as the LB server group

Table. LB server group service information input fields

Additional Information Input in this area, enter or select the required information.
Category
required status
Detailed description
Explanation Selection Enter resource description
tag Selection Add tags
Up to 50 tags can be added per resource
Table. LB server group additional information input fields

Review the created service information and the estimated billing amount, then click the Create button.
- Once creation is complete, verify the created resources on the LB server group list page.

Check detailed information of LB server group

In the LB Server Group menu, you can view and edit the resource list and detailed information. LB Server Group Details page consists of Details, Connected Resources, Tags, Operation History tabs.

To view detailed information of the LB server group, follow these steps.

All Services > Networking > Load Balancer Click the menu. 1. Navigate to the Load Balancer’s Service Home page.

On the Service Home page, click the LB Server Group menu. 2. Go to the LB server group list page.

You can modify column visibility by clicking the Settings button at the top right of the table.

Category	display status	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 the LB server group
LB health check ID	default	The name of the LB health check resource used by the LB server group
Number of members	default	Number of members registered in the LB server group
Creation date and time	default	LB server group creation timestamp
status	default	LB server group resource status

Table. LB server group list items

LB server group list Click the resource to view its detailed information on the page. 3. Navigate to the LB Server Group Details page.

LB Server Group Details page displays status information and descriptions of additional features at the top.

Category	Detailed description
status	LB server group resource status Active: The service is active and functioning normally Deleting: Processing service termination request Creating: Processing service creation request Error: Unable to determine current status due to an internal error If this status persists, contact the Support Center Editing: Processing service modification request
Delete LB server group	Delete LB server group resources

Category

Detailed description

status

LB server group resource status

Active: The service is active and functioning normally

Deleting: Processing service termination request

Creating: Processing service creation request

Error: Unable to determine current status due to an internal error
- If this status persists, contact the Support Center

Editing: Processing service modification request

Delete LB server group

Delete LB server group resources

Table. LB server group status information and additional feature items

Detailed Information

Detailed Information tab allows you to view detailed information of resources from the LB server group list, and modify the information if needed.

Category	Detailed description
service	service name
Resource Type	Resource Type
SRN	Resource unique ID in Samsung Cloud Platform
Resource name	Resource Name
Resource ID	Unique resource ID in the service
Constructor	User requesting service creation
Creation date and time	Service creation date and time
Modifier	Service Modification Request User
Modification date and time	Service modification date and time
Load Balancer name	Load Balancer resource name linked to the LB server group resource name when clicked navigates to the detail page
LB server group name	LB server group name
VPC name	VPC where the LB server group is created resource name resource name click to go to the detail page
Service Subnet name	Subnet where the LB server group is created resource name When clicking the resource name, go to the detail page
Protocol	LB server group forwarding protocol
Load balancing	LB server group traffic distribution method Click the Edit icon to modify
LB health check	LB health check resource name Edit icon can be clicked to modify
Member status by Availability Zone	Summary of member count and health check status by Availability Zone
Explanation	Add description for LB server group Edit Click the icon to edit

Table. LB server group detailed information tab items

Connected resource

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

Category	Detailed description
Add member	Add LB server group member button
Member name	Member name (server name) added to the LB server group Click the member name to go to the detail page Click the Edit icon to modify
IP address	Member IP address
Port	Member receive port
Weight	Load balancing weight Default 1 In an LB server group, when using weighted load balancing (Weighted Round Robin, Weighted Least Connection), values from 1 to 1000 can be entered
Activation	Member activation status Enable: Receiving client requests Disable: Excluded from receiving client requests
Creation date and time	Member addition time
Availability Zone	Information about the Availability Zone where the member (server) was created
Health check status	Health check status information Healthy: Health check is normal Unhealthy: Health check is abnormal Unknown: Health check status cannot be determined
status	Member resource status
Delete	Delete member

Table. Items in the resource list connected to the LB server group

Category	Detailed description
Tag list	Tag list You can view the Key and Value information of the tag Up to 50 tags can be added per resource When entering a tag, you can search and select from the list of previously created Keys and Values

Job History

Job History tab allows you to view the operation history of the selected resource.

Category	Detailed description
Work log	Task execution details
Task date and time	Task execution date and time
Resource Type	Resource Type
Resource name	LB server group name
Result	Task execution result (success/failure)
Operator Information	User information of the person who performed the task

Table. LB server group operation history list items

Managing LB Server Group Resources

You can view the member list of an LB server group and add or remove members.

Add member

You can add members to the LB server group to register server resources that handle client requests.

To add a member to the LB server group, follow the steps below.

All Services > Networking > Load Balancer Click the menu. 1. Navigate to the Load Balancer’s Service Home page.
On the Service Home page, click the LB Server Group menu. 2. Go to the LB server group list page.
On the LB server group list page, click the resource to edit its details. 3. Navigate to the LB Server Group Details page.
On the LB Server Group Details page, click the Connected Resources tab. 4. Go to the Connected Resources tab page.
On the Connected Resources tab page, click the Add Member button at the top right.

In the Add Member popup, after entering the required information, click the Confirm button.

Category	required status	Detailed description
LB server group name	default	LB server group name to add a member
Target server	Required	Server information to add as a member Virtual Server/Bare Metal Server/Multi-Node GPU Cluster: Select from the list of resources created in the same VPC as the LB server group Enter IP directly: Enter the server IP directly Click the Add button to add the target server
Member Information	Required	Member Port and Weight Settings Member Name: Display the server name and IP to be added as a member Port: The port the member will receive Weight: The weight applied for load balancing When using Weighted Round Robin or Weighted Least Connection load balancing, a value between 1 and 1000 must be entered

Category

required status

Detailed description

LB server group name

default

LB server group name to add a member

Target server

Required

Server information to add as a member

Virtual Server/Bare Metal Server/Multi-Node GPU Cluster: Select from the list of resources created in the same VPC as the LB server group

Enter IP directly: Enter the server IP directly

Click the Add button to add the target server

Member Information

Required

Member Port and Weight Settings

Member Name: Display the server name and IP to be added as a member

Port: The port the member will receive

Weight: The weight applied for load balancing
- When using Weighted Round Robin or Weighted Least Connection load balancing, a value between 1 and 1000 must be entered

Table. Add LB server group member item

Click the OK button in the alert dialog.
Check if members have been added in the Connected Resources tab.

Notice

Add the following rule to the Security Group of the server added as a member to enable communication between the Load Balancer and LB server group members.

(Direction) Inbound rule, (Target address) Load Balancer’s Source NAT IP, (Protocol) LB server group protocol, (Allowed port) member port

Reference

If the LB server group is in Creating, Editing, Deleting, Error state, you cannot add members.
If the Account that the LB server group belongs to has exceeded its allowable number of members, you cannot add additional members. * The maximum number of members that can be created in a single Account is 1,000.

Reference

You can add servers created in another VPC as members via VPC Peering. * After adding the target server by direct IP entry, check the Health Check Status of the added member in the Connected Resources tab.
For detailed information, refer to VPC > VPC Peering.

Edit member

When you click a member name in the member list, you go to the Member Details page. You can view member details, and click the Edit icon to change the information.

Follow these steps to edit member details.

All Services > Networking > Load Balancer Click the menu. 1. Navigate to the Load Balancer’s Service Home page.
On the Service Home page, click the LB Server Group menu. 2. Go to the LB server group list page.
On the LB server group list page, click the resource you want to edit details for. 3. Navigate to the LB Server Group Details page.
On the LB Server Group Details page, click the Connected Resources tab. 4. Navigate to the Connected Resources tab page.
On the Connected Resources tab page, click the member to edit. 5. Navigate to the Member Details page.
Edit the desired member information on the Member Details page.

Weight modification

If you use weighted load balancing (Weighted Round Robin, Weighted Least Connection), you can modify it.

Click the Edit icon of the Weight item. * Enter the weight to modify in the edit window and click the Confirm button.

Port modification

To edit a member port, click the Edit icon in the Port field. Enter the port to modify in the edit window and click the Confirm button.

Activate edit

To edit member activation, click the Activate Edit icon. Set the activation status in the edit window and click the Confirm button.

Reference

If you modify the activation to Disable, the member will only process existing connections and will stop new connections.

Delete member

Reference

If the LB server group is in Creating, Editing, Deleting, Error state, members cannot be deleted.

To delete unused members, follow the steps below.

All Services > Networking > Load Balancer Click the menu. 1. Navigate to the Load Balancer’s Service Home page.
On the Service Home page, click the LB Server Group menu. 2. Go to the LB server group list page.
On the LB server group list page, click the resource to edit its details. 3. Navigate to the LB Server Group Details page.
On the LB Server Group Details page, click the Connected Resources tab. 4. Go to the Connected Resources tab page.
On the Connected Resources tab page, click the member to delete. 5. Navigate to the Member Details page.
On the Member Details page, click the Delete Member button.
Check the member deletion status in the Linked Resources tab.

Terminate LB server group

You can terminate LB server groups that are not being used. However, because it may impact the application service, please request termination only after a thorough prior review.

Notice

The LB server group cannot be terminated in the following case.

If the LB server group is being used in a Listener: modify the Listener’s LB server group before deleting the LB server group.
If there are members registered in the LB server group: Delete all resources connected to the LB server group before terminating the LB server group.
When using an LB server group in an Auto-Scaling Group: Set the Load Balancer to disabled in the Auto-Scaling Group or modify it so that the LB server group is not used. * For more details, refer to Auto-Scaling Group > Load Balancer 사용.

To cancel the LB server group, follow the steps below.

All Services > Networking > Load Balancer Click the menu. 1. Navigate to the Load Balancer’s Service Home page.
On the Service Home page, click the LB Server Group menu. 2. Go to the LB server group list page.
Click the resource to be terminated from the LB server group list. 3. Navigate to the LB Server Group Details page.
On the LB Server Group Details page, click the Delete LB Server Group button.
After termination is complete, check the resource termination status in the LB server group list.

2 - LB health check

Users can create an LB health check through the Samsung Cloud Platform Console and use it for an LB server group.

Create LB health check

Reference

You can create up to 500 LB health checks per account.

To create an LB health check, follow these steps.

All Services > Networking > Load Balancer click the menu. 1. Navigate to the Service Home page of the Load Balancer.
On the Service Home page, click the LB Health Check menu. 2. LB health check list Navigate to the page.
On the LB Health Check List page, click the Create LB Health Check button. 3. Go to the LB Health Check Creation page.

On the Create LB health check page, enter the information required to create the service and select detailed options.

Enter or select the required information in the Service Information Input area.

Category	Required status	Detailed description
LB health check name	Required	LB health check resource name Enter using English uppercase and lowercase letters, numbers, and special characters (`-_`) with a length of 3 to 63 characters LB health check name must be unique within the Account
VPC name	Required	Select the VPC to create the LB health check Select the VPC where the LB server group that will use the LB health check is created
Service Subnet name	Required	Select the VPC Subnet to create the LB health check Select the Service Subnet where the LB server group that will use the LB health check is created
Health check method > Protocol	Required	Select TCP or HTTP as the protocol to use for member health checks.
Health check method > Health check port	필수	멤버 헬스 체크에 사용할 포트로 멤버 포트, 직접 입력 중 선택 직접 입력 시 1 ~ 65,534 사이의 값 입력
헬스 체크 방식 > 주기	필수	헬스 체크 주기 기본값 5초, 1 ~ 180초 내에서 입력 가능
Health check method > waiting time	Required	Health check response timeout Default is 5 seconds, input allowed between 1 and 180 seconds Cannot be set to a value larger than the interval
Health check method > Detection count	Required	Number of times to evaluate health check status Default is 3 times, input can be between 1 and 10
Health check method > HTTP method	Required	HTTP request method setting (HTTP protocol usage setting) choose GET or POST
Health check method > URL monitor	required	Enter health check URL path (HTTP protocol when used) Enter using English letters, numbers, and special characters (`/.-_?&=`) within 50 characters
Health check method > response code	Required	Enter the HTTP response code to receive from the server (HTTP protocol setting when used) Enter response codes in the 200 ~ 500 range
Health check method > request string	Required	Health check request string input (HTTP protocol POST method used) Enter the content to include in the Request Body using English letters, numbers, and special characters (`/.-_?&=`) within 255 bytes

Table. LB health check service information input items

In the Additional Information Input area, enter or select the required information.
Category
Required
Detailed description
Explanation Select Enter resource description
tag Select Add tag
Maximum of 50 tags can be added per resource
Table. LB server group additional information input fields

Summary Check the service information and estimated billing amount created in the panel, and click the Create button.
- Once creation is complete, check the created resources on the LB Health Check List page.

information

Add the following rule to the Security Group of the server added as a member for member health checks in the Load Balancer.

(Direction) Inbound rule, (Target address) Load Balancer’s health check IP, (Protocol) health check protocol, (Allowed port) health check port

Information

Set the LB health check to a value that members added to the LB server group can respond to.

Since the Load Balancer determines member status based on health check responses, the LB health check results may differ from the actual service status.

View detailed LB health check information

LB health check menu allows you to view and edit the resource list and detailed information. LB health check details page consists of Details, Connected resources, Tags, Operation history tabs.

Follow these steps to view detailed LB health check information.

All Services > Networking > Load Balancer Click the menu. 1. Navigate to the Load Balancer’s Service Home page.

On the Service Home page, click the LB Health Check menu. 2. Go to the LB health check list page.

Column visibility can be modified by clicking the Settings button at the top right of the table.

Category	display status	Detailed description
LB health check name	basic	LB health check resource name
Service Subnet ID	basic	VPC Subnet name where the LB health check was created
Number of LB server groups	basic	Number of LB server groups using LB health check
type	basic	LB health check type
Protocol	basic	LB health check protocol
Creation timestamp	basic	LB health check creation time
status	basic	LB health check resource status

Table. LB health check list items

LB Health Check List Click the resource to view detailed information on the page. 3. LB Health Check Details navigate to the page.

LB Health Check Details At the top of the page, status information and descriptions of additional features are displayed.

Category	Detailed description
status	LB health check resource status Active: The service is active and functioning normally Deleting: Processing service termination request Creating: Processing service creation request Error: Unable to determine current status due to an internal error If this status persists, contact the Support Center Editing: Processing service modification request
Delete LB health check	Delete LB health check resource

Category

Detailed description

status

LB health check resource status

Active: The service is active and functioning normally

Deleting: Processing service termination request

Creating: Processing service creation request

Error: Unable to determine current status due to an internal error
- If this status persists, contact the Support Center

Editing: Processing service modification request

Delete LB health check

Delete LB health check resource

Table. LB health check status information and additional feature items

Detailed Information

Detailed Information tab allows you to view the resource’s detailed information from the LB health check list, and edit the information when necessary.

Category	Detailed description
service	Service name
Resource Type	Resource Type
SRN	Unique resource ID in Samsung Cloud Platform
Resource name	Resource Name
Resource ID	Unique resource ID in the service
Constructor	Service creation request user
Creation timestamp	Service creation date and time
Modifier	User requesting service modification
Modification date and time	Service modification date and time
LB health check name	LB health check name
type	LB health check type
VPC name	VPC to use for LB health check Click the resource name to go to the detail page
Service Subnet name	VPC Subnet to use for LB health check Click the resource name to go to the detail page
Health check method	LB health check method configuration information Edit Click the icon to edit
Explanation	Additional information about LB health check Edit Click the icon to edit

Table. LB health check detailed information tab items

Connected resource

Connected Resources tab allows you to view detailed information of the LB server group linked to LB Health Check.

Category	Detailed description
LB server group name	LB server group resource name when you click the resource name LB server group navigate to the detail page
Protocol	LB health check protocol
Load Balancer name	Load Balancer resource name linked to the LB server group
Number of members	Number of members added to the LB server group
Creation Date/Time	LB server group creation time
status	LB 서버 그룹 자원 상태 Active: The service is active and functioning normally Deleting: Processing service termination request Creating: Processing service creation request Error: Unable to determine current status due to an internal error If this status persists, contact the Support Center Editing: Processing service modification request

Table. LB health check connected resource list items

Category	Detailed description
Tag list	Tag list You can view the Key and Value information of the tag Up to 50 tags can be added per resource When entering tags, search the existing list of created Keys and Values and select

Job History

Task History tab allows you to view the task history of the selected resource.

Category	Detailed description
Work History	Task execution details
Work date and time	Task execution date and time
Resource Type	Resource Type
Resource name	LB health check name
Task result	Task execution result (success/failure)
Operator Information	User information of the person who performed the operation

Table. LB health check job history list items

Modify LB health check method

On the LB Health Check Details page, you can modify the health check method.

To modify the LB health check method, follow the steps below.

Click the All Services > Networking > Load Balancer menu. 1. Navigate to the Load Balancer’s Service Home page.
On the Service Home page, click the LB Health Check menu. 2. Navigate to the LB health check list page.
On the LB Health Check List page, click the resource to edit its detailed information. 3. LB Health Check Details navigate to the page.
LB Health Check Details page, click the Edit icon of the Health Check Method. 4. Modify Health Check Method Proceed to the popup window.
Health Check Method Modification After editing the required information in the popup window, click the Confirm button.

Cancel LB health check

You can cancel the LB health check service that you are not using.

Caution

default type LB health check resources cannot be deleted.
LB health check resources used in the LB server group cannot be deleted.

To disable the LB health check, follow these steps.

Click the All Services > Networking > Load Balancer menu. 1. Navigate to the Service Home page of the Load Balancer.
On the Service Home page, click the LB Health Check menu. 2. Go to the LB health check list page.
From the LB health check list, click the resource to terminate. 3. Go to the LB Health Check Details page.
On the LB Health Check Details page, click the Delete LB Health Check button.
When the termination is complete, check the resource termination status in the LB health check list.