How-to guides

Users can create the service by entering the required information for an 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 these steps.

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

2. Click the Auto-Scaling Group menu. You will be taken to the Auto-Scaling Group List page.

3. On the Auto-Scaling Group List page, click the Create Auto-Scaling Group button. You will be taken to the Create Auto-Scaling Group 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.
     • Launch Configuration creation button can be clicked to create a new Launch Configuration.
   • Enter or select the required information in the Service Information Input area.

     Category	Whether 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 to be created within the Auto-Scaling Group The server name is automatically assigned as a combination of the entered server name and a sequence, serving as an identifier to distinguish servers created within the Auto-Scaling Group.
     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-Scaling Group should maintain Desired: Set the target number of servers within the Auto-Scaling Group; also indicates the number of servers initially created when the Auto-Scaling Group is created Max: Set the maximum number of servers the Auto-Scaling Group can maintain After creating the Auto-Scaling Group, you can adjust the settings using the Edit button. For details, see Modify Server Count
     Desired server count manual setting	Selection	Select whether to manually change the Desired number of servers Even after creating the Auto-Scaling Group, configure it via the Edit button. For details, refer to Manually edit Desired server count
     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 using the modify button. For details, refer to Configure Security Group
     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 a 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 termination If the Load Balancer is unused, Draining Timeout cannot be set The default is 300 seconds; you can enter a value from 1 second up to 3,600 seconds. Changes can be made after creating the Auto-Scaling Group; for details, see Using Auto-Scaling Group Load Balancer

     Table. Auto-Scaling Group service information input items
   • In the Scaling policy setting area, set the scaling policy.
     • For detailed information on policy settings, refer to Add Policy.

       Category	Required	Detailed description
       Current setting	Selection	Set scaling policy now Add Policy button click shows policy information input fields
       Set later	Selection	After creating an Auto-Scaling Group, set policies on the detail information page

       Table. Auto-Scaling Group scaling policy configuration items
   • In the Notification Settings area, configure the notification recipients and notification method.
     • For detailed information on notification settings, see Add Notification.

       Category	Required?	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 about notification settings, see the details In the notification recipients list, click the Edit button to modify the notification information
       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 Unhealthy 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 After clicking the Add Tag button, 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, check the created Auto-Scaling Group on the Auto-Scaling Group list page.

Check detailed information of Auto-Scaling Group

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

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

1. Click the All Services > Compute > Virtual Server menu. Navigate to the Service Home page of Virtual Server.
2. Click the Auto-Scaling Group menu. You will be taken to the Auto-Scaling Group List page.
3. On the Auto-Scaling Group List page, click the resource to view detailed information. You will be taken to the Auto-Scaling Group Details page.
   • Auto-Scaling Group Details page displays status information and additional feature information, and consists of Details, Policies, Schedule, Virtual Server, Load Balancer, Tags, Activity History 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: Serviceable state 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 lets you view detailed information of the selected resource and modify it if necessary.

Policy

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

Schedule

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

Virtual Server

Auto-Scaling Group List You can view the Virtual Server list of the selected resource on the page.

Load Balancer

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

Notification

Auto-Scaling Group List page allows you to view the notification recipients and notification methods for the selected resource.

tag

Auto-Scaling Group List page lets you view the tag information of selected resources, and add, modify, or delete them.

Work History

You can view the operation history of the selected resource on the Auto-Scaling Group List page.

Auto-Scaling Group Managing Resources

If you need to manage a created Auto-Scaling Group, you can perform actions 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. Click the All Services > Compute > Virtual Server menu. Navigate to the Service Home page of Virtual Server.

2. Click the Auto-Scaling Group menu. 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 edit the Launch Configuration for. You will be taken to the Auto-Scaling Group Details page.

4. Launch Configuration name. Click the Edit button. The Launch Configuration Edit popup opens. 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
   Number of Auto-Scaling Groups	Number of Auto-Scailg Groups with Launch Configuration applied
   View Details	Button to view Launch Configuration details

   Table. Launch Configuration list items

5. In the Launch Configuration Edit popup, select the Launch Configuration to modify, then click the Confirm button. The Launch Configuration Edit Notification popup opens. Check the message in the Launch Configuration Edit Notification popup and click the Confirm button.

Edit 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. Click the All Services > Compute > Virtual Server menu. Navigate to the Service Home page of Virtual Server.
2. Click the Auto-Scaling Group menu. You will be taken to the Auto-Scaling Group list page.
3. On the Auto-Scaling Group List page, click the resource to edit the server count. You will be taken to the Auto-Scaling Group Details page.
4. Click the Edit button for server count. The Edit Server Count popup opens.
5. Modify Server Count In the popup window, after entering the required fields, click the Confirm button.

   Category	Required	Detailed description
   Number of servers > Min	Required	Minimum number of servers to modify Set the number of servers that the Auto-Scaling Group should maintain at a minimum
   Number of servers > Desired	Required	Target server count to modify Set the target server count 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, see Desired server count manual setting modification
   Number of servers > Max	Required	Target number of servers to modify Set the maximum number of servers the Auto-Scailg Group can maintain

   Table. Auto-Scailg Group server count modification items

Terminate Virtual Server Created by Auto-Scaling Group

Virtual Servers created in an Auto-Scaling Group can be terminated by clicking the terminate button on the Virtual Server’s 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. Navigate to the Service Home page of Virtual Server.
2. On the Service Home page, click the Virtual Server menu. You will be taken to the Virtual Server List page.
3. On the Virtual Server List page, select the Virtual Server created by the Auto-Scaling Group. Navigate to the Virtual Server Details page.
4. Click the Cancel Service button on the Virtual Server Details page. A popup confirming the server termination will appear.
5. Click the Confirm button. Server termination is complete.

Cancel by adjusting the server count

To cancel a Virtual Server by modifying the server count, follow the steps below.

1. Click the All Services > Compute > Virtual Server menu. Navigate to the Service Home page of Virtual Server.
2. Click the Auto-Scaling Group menu. Navigate to the Auto-Scaling Group List page.
3. On the Auto-Scaling Group List page, click the resource to terminate the Virtual Server. You will be taken to the Auto-Scaling Group Details page.
4. Click the Edit button of the Server Count item. The Server Count Edit popup opens.
5. Server Count Edit In the popup window, after reducing the Desired number, click the Confirm button. As the Desired server count is adjusted, the Virtual Server will be terminated.

Modify manual setting of desired server count

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

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

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

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

2. Click the Auto-Scaling Group menu. You will be taken to the Auto-Scaling Group List page.

3. On the Auto-Scaling Group List page, click the resource to configure the Security Group. You will be taken to the Auto-Scaling Group Details page.

4. Click the Edit button for Security Group. Security Group Edit popup opens. 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. Security Group edit notification popup opens. Check the message of the Security Group edit notification popup and click the Confirm button.

Change status check

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

1. Click the All Services > Compute > Virtual Server menu. Go to the Service Home page of Virtual Server.
2. Click the Auto-Scaling Group menu. Go to the Auto-Scaling Group list page.
3. On the Auto-Scaling Group List page, click the resource for which you want to change the Load Balancer health check function. You will be taken to the Auto-Scaling Group Details page.
4. Click the Edit button of Status Check. Status Check Edit 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.

Manage Additional Information for Auto-Scaling Group

You can set the Load Balancer of an Auto-Scaling Group to enabled and select the LB server group. For an Auto-Scaling Group that is using a Load Balancer, you can change it to disabled.

Modify Load Balancer Draining Timeout

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

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

1. Click the All Services > Compute > Virtual Server menu. Navigate to the Service Home page of Virtual Server.
2. Click the Auto-Scaling Group menu. You will be taken to the Auto-Scaling Group List page.
3. Auto-Scaling Group List page, click the resource to set the Load Balancer Draining Timeout. You will be taken to the Auto-Scaling Group Details page.
4. Click the Load Balancer tab. You will be taken to the Load Balancer list page.
5. Click the Edit button for Draining Timeout. The Draining Timeout Edit popup opens.
6. Draining Timeout Edit In the popup window, select whether to use Draining Timeout, and enter the Draining Timeout duration (seconds).
7. Draining Timeout Edit After verifying the input values in the popup window, click the Confirm button. Draining Timeout Edit Notification popup window opens. 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. Click the All Services > Compute > Virtual Server menu. Navigate to the Service Home page of Virtual Server.
2. Click the Auto-Scaling Group menu. Navigate to the Auto-Scaling Group List page.
3. On the Auto-Scaling Group List page, click the resource that will use the Load Balancer. Navigate to the Auto-Scaling Group Details page.
4. Click the Load Balancer tab. You will be taken to the Load Balancer list page.
5. Click the Edit button of the Load Balancer. The Load Balancer Edit popup opens.
6. Load Balancer Edit Please select whether to use it in the popup. Selecting Use allows you to choose 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. Up to three are allowed. Click the X button to remove the added Load Balancer.
7. Check the Load Balancer list and click the Confirm button. Load Balancer Modification Notification popup opens. Verify the message in the notification popup and click the Confirm button.

Not Using Load Balancer

You can modify the Auto-Scaling Group’s Load Balancer to be unused. To set the Auto-Scaling Group’s Load Balancer to unused, follow these steps.

1. Click the All Services > Compute > Virtual Server menu. Go to the Service Home page of Virtual Server.
2. Click the Auto-Scaling Group menu. You will be taken to the Auto-Scaling Group List page.
3. On the Auto-Scaling Group List page, click the resource to change the Load Balancer to unused. You will be taken to the Auto-Scaling Group Details page.
4. Click the Load Balancer tab. You will be taken to the Load Balancer list page.
5. Click the Edit button of the Load Balancer. The Load Balancer Edit popup opens.
6. Load Balancer edit Choose whether to use it in the popup window. If you deselect Use, Load Balancer will no longer be used.
7. Use deselection, and click the Confirm button. Load Balancer Modification Notification popup opens. Verify the message in the notification popup and click the Confirm button.

Delete Auto-Scaling Group

Deleting an unused Auto-Scaling Group can reduce operational costs. However, terminating an Auto-Scaling Group may cause the running service to stop immediately, so you should thoroughly consider the impact of service interruption before proceeding with the termination.

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

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