How-to guides

Users can create the service by entering the required information for the Auto-Scaling Group and selecting detailed options through the Samsung Cloud Platform Console.

Create Auto-Scaling Group

You can create and use the Auto-Scaling Group service from the Samsung Cloud Platform Console.

To create an Auto-Scaling Group, follow the steps below.

1. Click the All Services > Compute > Virtual Server menu. 1. Navigate to the Service Home page of the Virtual Server.

2. Click the Auto-Scaling Group menu. 2. Auto-Scaling Group List Navigate to the page.

3. On the Auto-Scaling Group List page, click the Create Auto-Scaling Group button. 3. Auto-Scaling Group Creation Navigate to the page.

4. On the Auto-Scaling Group creation page, enter the information required to create the service.

   • In the Launch Configuration area, select the Launch Configuration.
     • Click the Launch Configuration creation button to create a new Launch Configuration.
   • Enter or select the required information in the Service Information Input area.

     Category	required status	Detailed description
     Auto-Scaling Group name	Required	Auto-Scaling Group name manage servers of the same type and purpose as a group
     Server name	Required	Server name to be created within the Auto-Scaling Group Automatically assign a server name by combining the entered server name, which serves as an identifier to distinguish servers created within the Auto-Scaling Group, with a sequence
     Number of servers	Required	Number of servers to create in the Auto-Scaling Group Enter a value between 0 and 20 (Min≤Desired≤Max) Min: Set the minimum number of servers the Auto-Scailg Group should maintain Desired: Set the target number of servers within the Auto-Scailg Group; also indicates the number of servers initially created when the Auto-Scailg Group is created Max: Set the maximum number of servers the Auto-Scailg Group can maintain After creating the Auto-Scaling Group, you can adjust the settings using the Edit button. For details, see 서버 수 수정하기
     Desired server count manual setting	Selection	Select whether to manually change the Desired server count Even after creating the Auto-Scaling Group, set it via the Edit button. For details, see Desired 서버 수 수동 설정 수정하기
     Network Settings > Network Settings	Required	Network settings for Auto-Scaling Group Select the desired VPC and standard Subnet IP can only be auto-generated. When you select local Subnet, you can choose the desired local Subnet, and IP can only be auto-generated
     Network Settings > Security Group	Selection	To allow required connections, you need to configure a Security Group If you do not configure a Security Group, all inbound and outbound traffic will be blocked according to the default rule (Any/Deny) For Linux servers, allow SSH traffic For Windows servers, allow RDP traffic Even after creating an Auto-Scaling Group, configure it via the Edit button. For more details, see Security Group 설정하기
     Load Balancer	Selection	Connect the Auto-Scaling Group to a Load Balancer Register the Auto-Scaling Group’s servers as members of the LB server group LB server group: Select the LB server group that exists in the chosen VPC Port: Enter a value between 1 and 65,534 Press the + button to add an LB server group (up to a total of three LB server groups and ports are allowed) LB server groups that use Weighted Round Robin or Weighted Least Connection load balancing cannot be selected Draining Timeout value: After checking Draining Timeout as Enabled, you can set the Draining Timeout value Draining Timeout: The waiting period before removing a server from the Load Balancer Since sessions may remain connected to the server, setting a Draining Timeout and waiting allows safe session cleanup If the Load Balancer is unused, Draining Timeout cannot be configured The default is 300 seconds; you can enter values from a minimum of 1 second up to a maximum of 3,600 seconds. Changes can be made after creating the Auto-Scaling Group; for details, refer to Auto-Scaling Group Load Balancer 사용하기.

     Table. Auto-Scaling Group service information entry items
   • In the Scaling policy configuration area, set the Scaling policy.
     • For detailed information on policy settings, see 정책 추가하기.

       Category	required status	Detailed description
       Current setting	Selection	Set the Scaling policy now Add Policy button click displays policy information input fields
       Set later	Selection	After creating an Auto-Scaling Group, set the policy on the details page

       Table. Auto-Scaling Group Scaling policy configuration items
   • In the Notification Settings area, configure the notification recipients and notification method.
     • For detailed information about notification settings, refer to 알림 추가하기.

       Category	required status	Detailed description
       Current setting	Selection	Set the notification recipients and notification method now Click the Add Notification button to open the Add Notification popup For detailed information on notification settings, refer to the details You can modify notification information by clicking the Edit button in the notification recipients list
       Set later	Selection	After creating an Auto-Scaling Group, set the notification recipients and notification method on the details page.

       Table. Auto-Scaling Group notification configuration items
   • In the Additional Information Input area, enter or select the required information.

     Category	required status	Detailed description
     Status check	Selection	Check the status of Virtual Server and Load Balancer and replace servers that are in an Unhealthy state Virtual Server status check: Enabled is the default and cannot be changed Load Balancer status check: Enabled only when a Load Balancer is connected in the service information input area Grace period: Set the time to defer status checks until the newly added server operates normally Enter 0 to disable the status check grace period
     tag	Selection	Add Tag Up to 50 per resource can be added Add Tag button after clicking, enter or select Key, Value values

     Table. Auto-Scaling Group additional information input fields

     Caution

     A server that the user changes to Stop is not considered Unhealthy, so even when using the health check feature, the server will not be replaced.

5. Summary Check the detailed information and estimated billing amount generated in the panel, and click the Create button.

   • When creation is complete, verify the created Auto-Scaling Group on the Auto-Scaling Group list page.

Auto-Scaling Group Check detailed information

The Auto-Scaling Group service allows you to view and edit the full resource list and detailed information. Auto-Scaling Group Details page is organized into Detailed Information, Policies, Schedule, Virtual Server, Load Balancer, Tags, Operation History tabs.

To view detailed information about the Auto-Scaling Group, follow these steps.

1. All Services > Compute > Virtual Server menu, click. 1. Navigate to the Service Home page of the Virtual Server.
2. Click the Auto-Scaling Group menu. 2. Navigate to the Auto-Scaling Group List page.
3. Auto-Scaling Group List page, click the resource to view detailed information. 3. Go to the Auto-Scaling Group Details page.
   • Auto-Scaling Group Details The page displays status information and additional feature information, and Details, Policies, Schedule, Virtual Server, Load Balancer, Tags, Operation History are organized as tabs.

     Category	Detailed description
     Auto-Scaling Group status	Status of the Auto-Scaling Group created by the user Creating: Creating Auto-Scaling Group In Service: In Service Scale In: Scale In in progress Scale Out: Scale Out in progress Cool Down: Cooling down Terminating: Terminating Auto-Scaling Group Attach to LB: Attaching to Load Balancer Detach from LB: Detaching from Load Balancer
     Delete Auto-Scaling Group	Button to delete Auto-Scaling Group

     Table. Auto-Scaling Group status information and additional features

Detailed Information

Auto-Scaling Group list page allows you to view detailed information of the selected resource and, if needed, modify the information.

Policy

On the Auto-Scaling Group List page, you can view the list of policies for the selected resource and, if needed, add or manage policies.

Schedule

Auto-Scaling Group List page allows you to view the schedule list of the selected resources and, if necessary, add or manage schedules.

Virtual Server

On the Auto-Scaling Group List page, you can view the Virtual Server list of the selected resource.

Load Balancer

Auto-Scaling Group List page allows you to view the Load Balancer list of the selected resources, and, if necessary, you can add or manage Load Balancers.

Notification

On the Auto-Scaling Group List page, you can view the notification recipients and notification methods for the selected resource.

Tag

On the Auto-Scaling Group List page, you can view the tag information of the selected resource, and you can add, modify, or delete it.

Operation History

Auto-Scaling Group List page allows you to view the operation history of the selected resource.

Auto-Scaling Group Managing Resources

If you need management functions for the created Auto-Scaling Group, you can perform tasks on the Auto-Scaling Group Details page.

Edit Launch Configuration

You can modify the Launch Configuration of an Auto-Scaling Group.

To modify the Launch Configuration of an Auto-Scaling Group, follow these steps.

1. All Services > Compute > Virtual Server Click the menu. 1. Navigate to the Service Home page of the Virtual Server.

2. Click the Auto-Scaling Group menu. 2. Go to the Auto-Scaling Group List page.

3. On the Auto-Scaling Group List page, click the resource to edit the Launch Configuration. 3. Auto-Scaling Group Details Navigate to the page.

4. Click the Edit button for the Launch Configuration name. 4. Launch Configuration Edit The popup window opens. 4. You can view the list of selectable Launch Configurations.

   Category	Detailed description
   Launch Configuration name	Launch Configuration name
   Image	Launch Configuration OS Image
   Server type	Launch Configuration server type
   Block Storage	Launch Configuration Block Storage Settings
   Auto-Scaling Group count	Number of Auto-Scaling Groups with a Launch Configuration applied
   View Details	Button to view Launch Configuration details

   Table. Launch Configuration list items

5. Launch Configuration Edit In the popup window, select the Launch Configuration to change, then click the Confirm button. 5. Launch Configuration Modification Notification A popup window opens. 5. Launch Configuration Modification Notification Check the message in the popup window and click the Confirm button.

Modify server count

You can modify the number of servers in the Auto-Scaling Group.

To modify the number of servers in an Auto-Scaling Group, follow these steps.

1. All Services > Compute > Virtual Server Click the menu. 1. Navigate to the Service Home page of the Virtual Server.
2. Click the Auto-Scaling Group menu. 2. Navigate to the Auto-Scaling Group List page.
3. On the Auto-Scaling Group List page, click the resource to modify the server count. 3. Go to the Auto-Scaling Group Details page.
4. Click the Edit server count button. 4. Edit Server Count popup window opens.
5. Edit Server Count After entering the required fields in the popup window, click the Confirm button.

   Category	required status	Detailed description
   Number of servers > Min	Required	Minimum number of servers to modify Set the number of servers that the Auto-Scaling Group maintains at a minimum
   Number of servers > Desired	Required	Number of target servers to modify Set the number of target servers within the Auto-Scaling Group Desired server count manual setting is disabled, you cannot modify the Desired server count. To modify the Desired server count, refer to Desired server count manual setting modification
   Number of servers > Max	Required	Target number of servers to modify Set the number of servers that the Auto-Scailg Group can maintain at maximum

   Table. Auto-Scailg Group server count modification items

Terminate Virtual Server Created by Auto-Scaling Group

Virtual Server created in the Auto-Scaling Group can be terminated by clicking the Terminate button on its detail page or by modifying the server count.

Cancel on the Virtual Server detail page

To cancel a Virtual Server on the Virtual Server detail page, follow these steps.

1. Click the All Services > Compute > Virtual Server menu. 1. Navigate to the Service Home page of the Virtual Server.
2. On the Service Home page, click the Virtual Server menu. 2. Go to the Virtual Server List page.
3. On the Virtual Server List page, select the Virtual Server created by the Auto-Scaling Group. 3. Navigate to the Virtual Server Details page.
4. On the Virtual Server Details page, click the Service Cancellation button. 4. A popup window announcing the server termination opens.
5. Confirm Click the button. 5. Server termination is complete.

Terminate by adjusting the server count

To terminate a Virtual Server by adjusting the server count, follow the steps below.

1. All Services > Compute > Virtual Server Click the menu. 1. Navigate to the Service Home page of the Virtual Server.
2. Click the Auto-Scaling Group menu. 2. Go to the Auto-Scaling Group List page.
3. Auto-Scaling Group List page, click the resource to terminate the Virtual Server. 3. Auto-Scaling Group Details page.
4. Click the Edit button for the Server Count item. 4. Edit Server Count popup window opens.
5. Server Count Modification In the popup window, after reducing the Desired count, click the Confirm button. 5. When the desired number of servers is adjusted, the Virtual Server is terminated.

Manually modify the desired number of servers

You can manually change the Desired server count setting of the Auto-Scaling Group.

To modify the manual setting of the Desired server count for an Auto-Scaling Group, follow these steps.

1. All Services > Compute > Virtual Server Click the menu. 1. Navigate to the Service Home page of the Virtual Server.
2. Click the Auto-Scaling Group menu. 2. Navigate to the Auto-Scaling Group List page.
3. Auto-Scaling Group List page, click the resource to manually change the Desired server count. 3. Auto-Scaling Group Details Navigate to the page.
4. Click the Edit server count button. 4. Desired server count manual setting The popup window opens.
5. Desired server count manual setting After selecting whether to use it in the popup window, click the Confirm button.

Setting up Security Group

You can configure the Security Group of an Auto-Scaling Group.

Follow these steps to configure the Security Group of an Auto-Scaling Group.

1. All Services > Compute > Virtual Server Click the menu. 1. Navigate to the Service Home page of the Virtual Server.

2. Click the Auto-Scaling Group menu. 2. Go to the Auto-Scaling Group List page.

3. Auto-Scaling Group List page, click the resource to configure the Security Group. 3. Go to the Auto-Scaling Group Details page.

4. Click the Edit button for Security Group. 4. Security Group Edit The popup window opens. 4. You can view the list of selectable Security Groups.

   Category	Detailed description
   Security Group name	Security Group name

   Table. Security Group list items

5. Security Group Edit In the popup window, after selecting the Security Group, click the Confirm button. 5. Security Group Modification Notification A popup window opens. 5. Security Group Modification Alert Check the message in the popup window and click the Confirm button.

Change status check

You can configure it to automatically replace servers that are in an Unhealthy state by checking the status of Virtual Server and Load Balancer.

1. All Services > Compute > Virtual Server Click the menu. 1. Navigate to the Service Home page of the Virtual Server.
2. Click the Auto-Scaling Group menu. 2. Go to the Auto-Scaling Group List page.
3. On the Auto-Scaling Group List page, click the resource to modify the Load Balancer health check feature. 3. Navigate to the Auto-Scaling Group Details page.
4. Click the Edit button of Status Check. 4. Edit Status Check The popup window opens.
5. Status Check Edit In the popup, choose whether to enable Load Balancer Status Check.
6. After entering the Grace period, click the Confirm button.
   • If you do not want to use the grace period, set the grace period to 0.

Auto-Scaling Group Manage Additional Information

You can set the Auto-Scaling Group’s Load Balancer to enabled and select the LB server group. For an Auto-Scaling Group that uses a Load Balancer, you can set it to unused.

Load Balancer Draining Timeout Edit

You can set the Load Balancer Draining Timeout of an Auto-Scaling Group.

To set the Load Balancer Draining Timeout for an Auto-Scaling Group, follow these steps.

1. All Services > Compute > Virtual Server menu, click it. 1. Navigate to the Service Home page of the Virtual Server.
2. Click the Auto-Scaling Group menu. 2. Go to the Auto-Scaling Group List page.
3. Auto-Scaling Group List page, click the resource to configure the Load Balancer Draining Timeout. 3. Auto-Scaling Group Details Navigate to the page.
4. Load Balancer Click the tab. 4. Load Balancer Navigate to the list page.
5. Click the Edit button of Draining Timeout. 5. Draining Timeout Edit A popup window opens.
6. Edit Draining Timeout In the popup window, select whether to use Draining Timeout, and enter the Draining Timeout duration (seconds).
7. Draining Timeout Edit After checking the input value in the popup window, click the Confirm button. 7. Draining Timeout Modification Notification A popup window opens. 7. Check the message in the notification popup and click the Confirm button.

Using Load Balancer

You can modify the Load Balancer of an Auto-Scaling Group. To configure the Load Balancer of an Auto-Scaling Group, follow these steps.

1. All Services > Compute > Virtual Server Click the menu. 1. Navigate to the Service Home page of the Virtual Server.
2. Click the Auto-Scaling Group menu. 2. Navigate to the Auto-Scaling Group List page.
3. Auto-Scaling Group List page, click the resource to use with Load Balancer. 3. Go to the Auto-Scaling Group Details page.
4. Load Balancer Click the tab. 3. Load Balancer Navigate to the list page.
5. Click the Edit button of the Load Balancer. 4. Load Balancer Edit The popup window opens.
6. Edit Load Balancer Please select whether to use it in the popup window. 5. If you select Use, you can select a Load Balancer.

   Category	Detailed description
   LB server group	LB server group name Select the LB server group that is created in the selected VPC LB server groups that use Weighted Round Robin or Weighted Least Connection load balancing cannot be selected
   Port	Port information of the LB server group When registering as a member of the LB server group, enter the required port information in the registration details. Enter a value between 1 and 65,534

   Table. Load Balancer list items
   • Click the + button to add an LB server group. * A maximum of three is allowed. * You can remove the Load Balancer you added by clicking the X button.
7. Check the Load Balancer list and click the Confirm button. 6. Load Balancer Modification Notification A popup window opens. 6. Check the message in the notification popup and click the Confirm button.

Load Balancer Not Used

You can modify the Auto-Scaling Group’s Load Balancer to be disabled. To configure an Auto-Scaling Group without using a Load Balancer, follow these steps.

1. All Services > Compute > Virtual Server Click the menu. 1. Navigate to the Service Home page of the Virtual Server.
2. Click the Auto-Scaling Group menu. 2. Auto-Scaling Group List Navigate to the page.
3. On the Auto-Scaling Group List page, click the resource to set the Load Balancer to unused. 3. Auto-Scaling Group Details page.
4. Load Balancer Click the tab. 4. Load Balancer Navigate to the list page.
5. Click the Edit button of Load Balancer. 5. Load Balancer Edit The popup window opens.
6. Edit Load Balancer Select whether to use it in the popup window. 6. If you deselect 사용, you will no longer use the Load Balancer.
7. Uncheck the Use option and click the Confirm button. 7. Load Balancer Modification Notification A popup window opens. 7. Check the notification popup message and click the Confirm button.

Delete Auto-Scaling Group

Deleting unused Auto-Scaling Groups can reduce operating costs. However, if you terminate the Auto-Scaling Group, the running service may be stopped immediately, so you should proceed with the termination only after fully considering the impact of service interruption.

To terminate the Auto-Scaling Group, follow these steps.

1. All Services > Compute > Virtual Server menu, click it. 1. Navigate to the Service Home page of the Virtual Server.
2. Click the Auto-Scaling Group menu. 2. Go to the Auto-Scaling Group List page.
3. Auto-Scaling Group List page, click the resource to terminate. 3. Go to the Auto-Scaling Group Details page.
4. Click the Auto-Scaling Group Delete button.
5. After the deletion is complete, verify on the Auto-Scaling Group List page that the resource has been deleted.