Create and Manage Network Load Balancer

The latest service changes have not yet been reflected in this content. We will update the content as soon as possible. Please refer to the Korean version for information on the latest updates.

Available in VPC

Network Load Balancer is a Load Balancer specialized in load distribution for large-capacity TCP layers. It logs the client IP as is and provides 2 types of Load Balancing algorithm.(Round Robin and Hash)

Create Network Load Balancer

The following is how to create a Network Load Balancer.

1. Access the NAVER Cloud Platform console.
2. Click the Services > Networking > Load Balancer menu, in that order.
3. Click the Load Balancer menu.
4. Click the [Create Load Balancer] > [Create Network Load Balancer] button in that order.
   
5. When the Create Load Balancer window appears, proceed with the following steps.
   • 1. Create Load Balancer
   • 2. Create Load Balancer (set listener)
   • 3. Select Target Group
   • 4. View setting information

1. Create Load Balancer

Enter the information for the Network Load Balancer you wish to create and click the [Next] button.

• Network: select the network type for Load Balancer.

  • Private IP: it processes the load division from the internal server using a Private IP within VPC. It cannot be accessed from outside.
  • Public IP: the Public IP is set to allow calling from outside VPC or Internet. It processes the load division. You can utilize it by connecting with domains or CDN services of the customers using the random domain provided with the Public IP.

• Load control capacity: select the size of the Load Balancer depending on the load control capacity.

  • You can select Small/Medium/Large considering the load control capacity.
  • Each size can handle at least 100,000/200,000/400,000 loads, respectively, based on connections per minute (CPS).
  • If you created a Private Network Load Balancer, only Small is available.

• Target VPC: select the VPC to create a Load Balancer in.

• Select Subnet: select the zone and subnet to use to create the Load Balancer.

  Caution

  • The selected zone and subnet cannot be changed after creating the Load Balancer.
  • Create and select a dedicated subnet. If the Load Balancer is located in the same Subnet with the server, it does not process the load to the server.
  • You can only select the Subnet included in the selected VPC you chose as Target VPC.
  • For the Singapore Region, you can select the Subnet by the selected network type.
    • If you chose Private IP, you can only select the Subnet created with a Private Load Balancer Subnet.
    • If you chose Public IP, you can only select the Subnet created with Public Load Balancer Subnet.
    • For more information about creating Subnets, see Create Subnet.
  • You do not need to create separate Subnets for each Load Balancer, however, we recommend a Subnet in the C Class (255.255.255.0) scale.

• If you are in the Singapore Region and set the Network to Public IP, you can designate a fixed Public IP.

  • Official Certified IP: select the same zone as the subnet and select the unused IP among the IPs you requested in the Public IP menu to assign it to Load Balancer. If you have no requested IP, you can select Request Public IP to request anew.
  • You cannot select the same Public IP for different zones.
  Caution

  Once a public IP is set, it is fixed and can be used semi-permanently, but cannot be changed.

2. Create Load Balancer (set listener)

1. Set up the port that the basic listener of Load Balancer will operate in.
   • For the Korea Region, you can only select TCP.
   • For the Singapore Region, you can select from TCP or UDP protocol.
2. Set up the port that the basic listener of Load Balancer will bind to.
3. Click the [Add] button.
   • A listener is added.
   • Repeat steps 1 to 3 to add multiple listeners.
   • For the Singapore Region, you can add only one listener when creating a Load Balancer. If you need to add listeners, create a Load Balancer and see Add listener to add a listener.
   • In order to delete an added listener, click the [Delete] button.
4. Click the [Next] button.

3. Select Target Group

Select the Target Group to apply load division and click the [Next] button.

• To do this, the target group need to be created in advance. If there is no created Target Group, click the [Create Target Group] button to create a Target Group. (See Create Target Group)
• Among target groups created, only target groups that can be connected are displayed.
  • The Target Groups for Network Load Balancer varies by the protocol type of the listener.
    • For the Korea Region, the supported listener protocols are only TCP and you can only select the Target Groups created with TCP protocols.
    • For the Singapore Region, the supported listener protocols are TCP and UDP and you can select the Target Groups created with the same protocol as the listener’s protocol only.

4. View setting information

Check the setting information for Load Balancer and click the [Create Load Balancer] button.

Manage Network Load Balancer

You can change the Load Balancer and set listeners for the created Network Load Balancer and check the monitoring information as a graph.

Set Network Load Balancer

The following is how to check the setting information and change the setting for Load Balancer.

1. Click the Services > Networking > Load Balancer menu on the NAVER Cloud Platform console, in that order.

2. Click the Load Balancer menu.

3. Select the Load Balancer to check or change the setting information and click the [Change Load Balancer Settings] button.

   • The Change Load Balancer Settings window appears and you can view the setting information of the Load Balancer.

4. After applying changes, click the [OK] button.

   

   • Load balancing performance can be changed.
     • You can select Small/Medium/Large considering the load control capacity.
     • Each size can handle at least 100,000/200,000/400,000 loads, respectively, based on connections per minute (CPS).

Set listener

You can check the registered listeners on the Change listener settings screen and add/change/delete them. You can view and change the rules.

The following describes how to move listeners to the change settings page.

1. Click the Services > Networking > Load Balancer menu on the NAVER Cloud Platform console, in that order.
2. Click the Load Balancer menu.
3. Select the Load Balancer to change the listener setting and click the [Change listener settings] button.
   • When you move to the Change listener settings screen, the listeners you set upon creating the Load Balancer show up as a default.

Add listener

The following describes how to add listeners.

1. Click the [Add listener] button on the Change listener settings screen.
2. Select the protocol for the listener you wish to add.
   • For the Korea Region, you can only select TCP.
   • For the Singapore Region, you can select from TCP or UDP protocol.
3. Enter the port number that the listener will bind to.
4. Select the Target Group the listener's traffic will be forwarded to.
5. Click the [OK] button.

Change listeners

The following describes how to change listeners.

1. Click the [Change listener] button on the Change listener settings screen.
2. See Add listener to apply the changes.
3. Click the [OK] button.

Delete listeners

The following describes how to delete a listener.

1. Select the listener you wish to delete on the Set listener screen.
2. Click the [Delete listener] button.
3. Check the content on the Delete listener window and click the [Delete] button.
   • The selected listener is deleted.

View rules

You can view the registered rules on the View/Change rules screen.

Rules have the following characteristics.

• Each rule consists of actions (Network Load Balancers do not take conditions)
• You cannot delete the Default rules.
• The rules are applied in the priority order and the unapplied traffic operates following the Default rules.

The following describes how to view registered rules.

1. Select the listener you wish to view on the Set listener screen.
2. Click the [View/Change rules] button.
   • Move to the View/Change rules screen.

Change rules

The following describes how to change rules.

1. Select the listener to make a rule change to on the Set listener screen and click the [View/Change rules] button.
2. Select the rule to change on the View/Change rules screen and click the [Change rules] button.
3. Apply the changes.
   • Change the Target Group at Action and click the [Add] button.
     • Weights can't be changed.
   • Click the [X] button to delete the added target group.
4. Click the [OK] button.

Network Load Balancer Monitoring

You can check the regularly collected information for Concurrent connection, Connection per Second, Traffic In, Available Host Count and Unavailable Host Count for the selected period each as a graph.

The following is how to check the monitoring information of the Network Load Balancer.

1. Click the Services > Networking > Load Balancer menu on the NAVER Cloud Platform console, in that order.
2. Click the Load Balancer menu.
3. Select a Load Balancer to monitor and click the [Monitoring] button.
   • The basic monitoring window for the Load Balancer pops up and shows the monitoring information as graphs.
   • Select the period to check the monitoring information collected for the selected period.
   • Click the [Refresh] button to refresh the graphs.
   • Click to view an extended graph and click the [x] button to download the collected monitoring information as an Excel file.

Delete Network Load Balancer

The following is how to delete a Network Load Balancer.

1. Click the Services > Networking > Load Balancer menu on the NAVER Cloud Platform console, in that order.
2. Click the Load Balancer menu.
3. Select a Load Balancer to delete and click the [Delete Load Balancer] button.
4. Check the content in the Delete Load Balancer pop-up window and click the [Delete] button.
   • The selected Load Balancer is deleted.