How-to guides

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

Creating an Auto-Scaling Group

You can create an Auto-Scaling Group service through the Samsung Cloud Platform Console.

To create an Auto-Scaling Group, follow these steps:

1. Click All Services > Compute > Virtual Server menu. It will move to the Virtual Server’s Service Home page.

2. Click the Auto-Scaling Group menu. It will move to the Auto-Scaling Group list page.

3. On the Auto-Scaling Group list page, click the Create Auto-Scaling Group button. It will move to the Create Auto-Scaling Group page.

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

   • In the Launch Configuration section, select a Launch Configuration.
     • You can create a new Launch Configuration by clicking the Create Launch Configuration button.
   • In the Service Information Input section, enter or select the required information.

     Category	Required	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 within the Auto-Scaling Group An identifier to distinguish servers created within the Auto-Scaling Group, automatically assigned based on the input server name and 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 for the Auto-Scaling Group to maintain Desired: Set the target number of servers within the Auto-Scaling Group, also meaning the initial number of servers created when the Auto-Scaling Group is created Max: Set the maximum number of servers that the Auto-Scaling Group can maintain After creating the Auto-Scaling Group, you can modify the settings using the Modify button. For more information, refer to Modifying the Number of Servers
     Manual Desired Server Count Setting	Optional	Choose whether to manually change the Desired server count After creating the Auto-Scaling Group, you can modify the settings using the Modify button. For more information, refer to Modifying Manual Desired Server Count Setting
     Network Settings > Network Settings	Required	Network settings for the Auto-Scaling Group Select the desired VPC and general Subnet IP can only be automatically generated If you select a local Subnet, you can choose the desired local Subnet, and IP can only be automatically generated
     Network Settings > Security Group	Optional	Set a Security Group to allow necessary access If you don’t set a Security Group, it will follow the default rule (Any/Deny) and block all inbound and outbound traffic For Linux servers, allow SSH traffic For Windows servers, allow RDP traffic After creating the Auto-Scaling Group, you can modify the settings using the Modify button. For more information, refer to Setting Security Group
     Load Balancer	Optional	Connect the Auto-Scaling Group to a Load Balancer Register the servers in the Auto-Scaling Group as members of the LB server group LB server group: Select an existing LB server group in the chosen VPC Port: Enter a value between 1 and 65,534 Click the + button to add an LB server group (up to 3 LB server groups and ports can be added) Weighted Round Robin or Weighted Least Connection load balancing LB server groups cannot be selected Draining Timeout value: If Draining Timeout is checked as used, set the Draining Timeout value Draining Timeout: The time to wait before disconnecting the server from the Load Balancer This allows for safe session cleanup, as sessions connected to the server may still exist If Load Balancer is not used, Draining Timeout setting is not available The default value is 300 seconds, and you can enter a value between 1 second and 3,600 seconds After creating the Auto-Scaling Group, you can modify the settings, and for more information, refer to Using Load Balancer in Auto-Scaling Group

     Table. Auto-Scaling Group Service Information Input Items
   • In the Scaling Policy Settings section, set the scaling policy.
     • For more information on policy settings, refer to Adding a Policy.

       Category	Required	Detailed Description
       Set Now	Optional	Set the scaling policy now Click the Add Policy button to display the policy information input items
       Set Later	Optional	Set the policy after creating the Auto-Scaling Group, on the detailed information page

       Table. Auto-Scaling Group Scaling Policy Settings Items
   • In the Notification Settings section, set the notification recipient and method.
     • For more information on notification settings, refer to Adding a Notification.

       Category	Required	Detailed Description
       Set Now	Optional	Set the notification recipient and method now Click the Add Notification button to open the Add Notification popup window For more information on notification settings, refer to the detailed information Click the Modify button in the notification recipient list to change the notification information
       Set Later	Optional	Set the notification recipient and method after creating the Auto-Scaling Group, on the detailed information page

       Table. Auto-Scaling Group Notification Settings Items
   • In the Additional Information Input section, enter or select the required information.

     Category	Required	Detailed Description
     Tag	Optional	Add a tag Up to 50 tags can be added per resource Click the Add Tag button, then enter or select the Key and Value

     Table. Auto-Scaling Group Additional Information Input Items

5. In the Summary panel, review the created details and estimated billing amount, then click the Complete button.

   • After creation is complete, you can find the created Auto-Scaling Group on the Auto-Scaling Group list page.

Checking Auto-Scaling Group Details

The Auto-Scaling Group service allows you to view and modify the overall resource list and detailed information. The Auto-Scaling Group details page consists of Details, Policy, Schedule, Virtual Server, Load Balancer, Tag, and Work History tabs.

To check the Auto-Scaling Group details, follow these steps:

1. Click All Services > Compute > Virtual Server menu. It will move to the Virtual Server’s Service Home page.
2. Click the Auto-Scaling Group menu. It will move to the Auto-Scaling Group list page.
3. On the Auto-Scaling Group list page, click the resource you want to check the details for. It will move to the Auto-Scaling Group details page.
   • The Auto-Scaling Group details page displays status information and additional feature information, and consists of Details, Policy, Schedule, Virtual Server, Load Balancer, Tag, and Work History tabs.

     Category	Detailed Description
     Auto-Scaling Group Status	The status of the Auto-Scaling Group created by the user Creating: Auto-Scaling Group creation in progress In Service: Serviceable state Scale In: Scale In in progress Scale Out: Scale Out in progress Cool Down: Cool-down wait in progress Terminating: Auto-Scaling Group deletion in progress Attach to LB: Connecting to Load Balancer in progress Detach from LB: Detaching from Load Balancer in progress
     Auto-Scaling Group Deletion	Button to delete the Auto-Scaling Group

     Table. Auto-Scaling Group Status Information and Additional Features

Details

… (rest of the content remains the same) Auto-Scaling Group Details page where you can check the detailed information of the selected resource and modify the information if necessary.

Policy

On the Auto-Scaling Group List page, you can check the policy list of the selected resource and add or manage policies if necessary.

For more information on policy management and policy examples, see Policy Management.

Schedule

On the Auto-Scaling Group List page, you can check the schedule list of the selected resource and add or manage schedules if necessary.

For more information on schedule management, see Adding Schedule and Deleting Schedule.

Virtual Server

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

Load Balancer

On the Auto-Scaling Group List page, you can check the Load Balancer list of the selected resource and add or manage Load Balancers if necessary.

Notification

You can check the notification recipient information and notification method for the selected resource on the Auto-Scaling Group List page.

For more information on notification settings, refer to Managing Notifications.

Tag

You can check the tag information of the selected resource on the Auto-Scaling Group List page and add, modify, or delete tags.

Work History

You can check the work history of the selected resource on the Auto-Scaling Group List page.

Managing Auto-Scaling Group Resources

If you need to manage the created Auto-Scaling Group, you can perform tasks on the Auto-Scaling Group Details page.

Modifying Launch Configuration

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

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

1. Click All Services > Compute > Virtual Server. The Virtual Server Service Home page opens.

2. Click Auto-Scaling Group. The Auto-Scaling Group List page opens.

3. On the Auto-Scaling Group List page, click the resource for which you want to modify the Launch Configuration. The Auto-Scaling Group Details page opens.

4. Click the Modify button next to the Launch Configuration name. The Modify Launch Configuration popup window opens, where you can view the list of available 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 to which the Launch Configuration is applied
   Detailed View	Button to view detailed Launch Configuration information

   Table. Launch Configuration List Items

5. In the Modify Launch Configuration popup window, select the Launch Configuration you want to modify and click OK. The Launch Configuration Modification Notification popup window opens. Check the message and click OK.

Modifying Server Count

You can modify the server count of the Auto-Scaling Group.

To modify the server count of the Auto-Scaling Group, follow these steps:

1. Click All Services > Compute > Virtual Server. The Virtual Server Service Home page opens.
2. Click Auto-Scaling Group. The Auto-Scaling Group List page opens.
3. On the Auto-Scaling Group List page, click the resource for which you want to modify the server count. The Auto-Scaling Group Details page opens.
4. Click the Edit Server Count button. The Edit Server Count popup window opens.
5. In the Edit Server Count popup window, enter the required items and click the Confirm button.

   Classification	Required	Detailed Description
   Server Count > Min	Required	Modify the minimum number of servers Set the minimum number of servers that the Auto-Scaling Group will maintain
   Server Count > Desired	Required	Modify the target server count Set the target server count in the Auto-Scaling Group If Desired Server Count Manual Setting is Not Used, you cannot modify the Desired server count. To modify the Desired server count, refer to Modifying Desired Server Count Manual Setting
   Server Count > Max	Required	Modify the maximum server count Set the maximum number of servers that the Auto-Scaling Group can maintain

   Table. Auto-Scaling Group Server Count Modification Items

Canceling a Virtual Server Created in an Auto-Scaling Group

A Virtual Server created in an Auto-Scaling Group can be canceled by reducing the desired number of servers.

To cancel a Virtual Server created in an Auto-Scaling Group, follow these steps:

1. Click All Services > Compute > Virtual Server. You will be taken to the Virtual Server’s Service Home page.
2. Click Auto-Scaling Group. You will be taken to the Auto-Scaling Group List page.
3. On the Auto-Scaling Group List page, click the resource you want to cancel. You will be taken to the Auto-Scaling Group Details page.
4. Click the Edit button in the Server Count section. The Edit Server Count popup window will open.
5. In the Edit Server Count popup window, reduce the Desired count and click the Confirm button. The Desired server count will be adjusted, and the Virtual Server will be canceled.

Modifying Desired Server Count Manual Setting

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

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

1. Click the All Services > Compute > Virtual Server menu. The Virtual Server Service Home page opens.
2. Click the Auto-Scaling Group menu. The Auto-Scaling Group List page opens.
3. On the Auto-Scaling Group List page, click the resource for which you want to change the Desired server count manual setting. The Auto-Scaling Group Details page opens.
4. Click the Edit button for the server count. The Desired Server Count Manual Setting popup window opens.
5. In the Desired Server Count Manual Setting popup window, select whether to use it and click the Confirm button.

Setting Security Group

You can set the Security Group for the Auto-Scaling Group.

To set the Security Group for the Auto-Scaling Group, follow these steps:

1. Click the All Services > Compute > Virtual Server menu. The Virtual Server Service Home page opens.

2. Click the Auto-Scaling Group menu. The Auto-Scaling Group List page opens.

3. On the Auto-Scaling Group List page, click the resource for which you want to set the Security Group. The Auto-Scaling Group Details page opens.

4. Click the Edit button for the Security Group. The Security Group Modification popup window opens, where you can view the list of available Security Groups.

   Classification	Detailed Description
   Security Group Name	Security Group name

   Table. Security Group List Items

5. In the Security Group Modification popup window, select the Security Group and click the Confirm button. The Security Group Modification Notification popup window opens. Check the message in the notification popup window and click the Confirm button.

Managing Additional Auto-Scaling Group Information

You can set the Load Balancer to use and select the LB server group for the Auto-Scaling Group. For an Auto-Scaling Group that is using a Load Balancer, you can change it to not use it.

Modifying Load Balancer Draining Timeout

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

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

1. Click the All Services > Compute > Virtual Server menu. The Virtual Server Service Home page opens.
2. Click the Auto-Scaling Group menu. The Auto-Scaling Group List page opens.
3. On the Auto-Scaling Group List page, click the resource for which you want to set the Load Balancer Draining Timeout. The Auto-Scaling Group Details page opens.
4. Click the Load Balancer tab. The Load Balancer list page opens.
5. Click the Edit button for the Draining Timeout. The Draining Timeout Modification popup window opens.
6. In the Draining Timeout Modification popup window, select whether to use the Draining Timeout and enter the Draining Timeout time (in seconds).
7. In the Draining Timeout Modification popup window, check the input values and click the Confirm button. The Draining Timeout Modification Notification popup window opens. Check the message in the notification popup window and click the Confirm button.

Using Load Balancer

You can modify the Load Balancer for the Auto-Scaling Group. To set the Load Balancer for the Auto-Scaling Group, follow these steps:

1. Click the All Services > Compute > Virtual Server menu. The Virtual Server Service Home page opens.
2. Click the Auto-Scaling Group menu. The Auto-Scaling Group List page opens.
3. On the Auto-Scaling Group List page, click the resource for which you want to set the Load Balancer. The Auto-Scaling Group Details page opens.
4. Click the Load Balancer tab. The Load Balancer list page opens.
5. Click the Edit button for the Load Balancer. The Load Balancer Modification popup window opens.
6. In the Load Balancer Modification popup window, select whether to use it. If you select Use, you can select the Load Balancer.

   Classification	Detailed Description
   LB Server Group	LB server group name Select the LB server group created in the selected VPC LB server groups using Weighted Round Robin or Weighted Least Connection load balancing cannot be selected
   Port	LB server group port information Enter the port information required for registering the LB server group member Enter a value between 1 and 65,534

   Table. Load Balancer List Items
   • You can add an LB server group by clicking the + button. Up to 3 can be added. You can remove the added Load Balancer by clicking the X button.
7. Check the Load Balancer list and click the Confirm button. The Load Balancer Modification Notification popup window opens. Check the message in the notification popup window and click the Confirm button.
   Caution

   • Be cautious when detaching/attaching servers from Load Balancer, as it may affect the service.
   • If Draining Timeout is in use, setting Load Balancer to not in use or removing some connected Load Balancers using the X button will not immediately detach the server. The server will be detached from Load Balancer after waiting for the Draining Timeout (seconds). At this time, Auto-Scaling Group will be in Detach from LB state.

Not using Load Balancer

You can modify the Load Balancer of Auto-Scaling Group to not in use. To set Load Balancer to not in use in Auto-Scaling Group, follow the procedure below.

1. Click All Services > Compute > Virtual Server menu. Move to the Service Home page of Virtual Server.
2. Click Auto-Scaling Group menu. Move to the Auto-Scaling Group list page.
3. Click the resource to set Load Balancer in the Auto-Scaling Group list page. Move to the Auto-Scaling Group details page.
4. Click the Load Balancer tab. Move to the Load Balancer list page.
5. Click the Modify button of Load Balancer. The Load Balancer modification popup window opens.
6. Select whether to use Load Balancer in the Load Balancer modification popup window. If you deselect Use, Load Balancer will not be used.
7. Confirm the deselection of Use and click the OK button. The Load Balancer modification notification popup window opens. Check the message in the notification popup window and click the OK button.

Deleting Auto-Scaling Group

Deleting unused Auto-Scaling Groups can reduce operating costs. However, deleting an Auto-Scaling Group may immediately stop the service in operation, so you must consider the impact of service termination before proceeding with the deletion.

To delete an Auto-Scaling Group, follow the procedure below.

1. Click All Services > Compute > Virtual Server menu. Move to the Service Home page of Virtual Server.
2. Click Auto-Scaling Group menu. Move to the Auto-Scaling Group list page.
3. Click the resource to delete in the Auto-Scaling Group list page. Move to the Auto-Scaling Group details page.
4. Click the Delete Auto-Scaling Group button.
5. After deletion is complete, check if the resource has been deleted in the Auto-Scaling Group list page.