Load Balancer overview

Available in Classic and VPC

Load Balancer is a service that distributes received traffic to multiple servers. It distributes received traffic to registered member servers to increase availability and adjust system utilization rate. This increases the workload's availability to support responding to unexpected server failures or scheduled change tasks without interruption.
Classic Load Balancer is provided in Classic environment, and each of Application Load Balancer, Network Load Balancer, Network Proxy Load Balancer is provided in VPC environment, selecting a suitable Load Balancer for customer service.

Load Balancer features

Features provided by each Load Balancer type and environment are different.
See VPC for features provided in VPC environment, and Classic for features provided in Classic environment.

VPC environment

The various features that Load Balancer offers in the VPC environment are the following:

• High-performance load balancing (Network Load Balancer): specialized in decentralizing high-capacity loads, automatically adjusts performance based on the scale of customer's service
• TCP session management (Network Proxy Load Balancer): provides communications with proxy methods that can be used in TCP-based applications
• SSL authentication and encryption settings (Application Load Balancer and Network Proxy Load Balancer): provides the SSL protocols, including TLSv1/TLSv1.1/TLS1.2. You can manage the certificates by connecting with Certificate Manager
• Various server load control methods (Application Load Balancer, Network Proxy Load Balancer): provides 3 server load distribution methods
  • Round robin (rounding order)
  • Least Connection (minimum connection)
  • Source IP Hash (IP hash)
• L7 (Application Layer) feature provision (Application Load Balancer): this is a rule supported by Load Balancer. It segments client's requests and forward to servers
• Providing Inline mode (Inline Load Balancer): operates in an Inline manner in which network packets must be transferred without tampering, used to ensure the stability of security appliances in SFC
• Load Balancer monitoring: provides the collected monitoring information by scheduled intervals
• Load Balancer port settings: multiple Load Balancer rules can be applied at once

Classic environment

The various features that Load Balancer offers in the Classic environment are the following:

• SSL authentication and encryption settings: you can manage and apply the certificates to Load Balancers by connecting with Certificate Manager
• Load Balancer port settings: multiple Load Balancer rules can be applied at once
• Load Balancer monitoring: provides the collected monitoring information by scheduled intervals
• Load Balancer management: after creating a Load Balancer, you can change the Connection Idle Time (maintaining the connection with Load Balancer) and Keep-Alive (reusing the existing connection) settings
• Various server load balancing methods: provides 3 server load balancing methods
  • Round robin (rounding order)
  • Least Connection (minimum connection)
  • Source IP Hash (IP hash)

Load Balancer user guide

Load Balancer provides services in Korea, Singapore, U.S. West, Japan, and Germany Regions. Since service details vary in each Region, we provide the user guide by different Regions as the following:

• Korea, Singapore, and Japan Regions
• U.S. West, Japan, and Germany Regions

Korea, Singapore, and Japan Regions

See the following table of contents and their details for best use in Korea, Singapore, and Japan Regions:

• Load Balancer overview: Load Balancer introduction, helpful resources, and FAQ
• Load Balancer specifications: the supported specifications, service limits and pricing information for Load Balancer
• Load Balancer scenarios: the entire process of using Load Balancer
• Getting started with Load Balancer (VPC): the preparation to use Load Balancer, creating Target Groups and Load Balancers
• Using Load Balancer (VPC): how to use Load Balancer in the VPC environment
  • Target Group screen: introducing the Target Group screen
  • Create and manage Target Group: how to create, delete and manage Target Groups
  • Load Balancer screen: introducing the Load Balancer screen in VPC environment
  • Create and manage Application Load Balancer: how to create, delete and manage Application Load Balancers
  • Create and manage Network Load Balancer: how to create, delete and manage Network Load Balancers
  • Create and manage Network Proxy Load Balancer: how to create, delete and manage Network Proxy Load Balancer
  • Using multiple certificates: how to use multiple TLS/SSL certificates
• Managing Load Balancer permissions (VPC): how to manage the permissions for Load Balancer using Sub Account
• Getting started with Load Balancer (Classic): the preparation to use Load Balancer, creating and changing the status of Load Balancers
• Using Load Balancer (Classic): how to use Load Balancer in the Classic environment
  • Load Balancer screen: introducing the Load Balancer screen in the Classic environment
  • Create and manage Load Balancer: how to create, delete and manage Load Balancers in the Classic environment
• Load Balancer glossary: terms you must know when using Load Balancer
• Load Balancer release notes: update history for Load Balancer guide

U.S. West and Germany Regions

See the following table of contents and their details for best use in the U.S. West and Germany Regions:

• Load Balancer overview: Load Balancer introduction, helpful resources, and FAQ
• Load Balancer specifications: the supported specifications, service limits and pricing information for Load Balancer
• Load Balancer scenarios: the entire process of using Load Balancer
• Getting started with Load Balancer (Classic): the preparation to use Load Balancer, creating and changing the status of Load Balancers
• Using Load Balancer (Classic): how to use Load Balancer in the Classic environment
  • Load Balancer screen: introducing the Load Balancer screen in the Classic environment
  • Create and manage Load Balancer: how to create, delete and manage Load Balancers in the Classic environment
• Load Balancer glossary: terms you must know when using Load Balancer
• Load Balancer release notes: update history for Load Balancer guide

Load Balancer related resources

NAVER Cloud Platform provides various related resources as well as the guide to help customers better understand Load Balancer. If you're a developer or marketer in need of detailed information while you're considering adopting Load Balancer or establishing data related policies, please make good use of the resources below:

• Improving the understanding and usage methods for Load Balancer

  • Load Balancer (VPC) API Guide: how to use API in VPC environment for Load Balancer developers
  • Load Balancer (Classic) API Guide: how to use API in Classic environment for Load Balancer developers
  • Load Balancer CLI Guide: how to use CLI for Load Balancer developers
  • Ncloud use environment guide: guide on VPC and Classic environments and supported features
  • Price introduction, characteristics and detailed features: Load Balancer’s price structure, the characteristics of Load Balancer and summary of detailed features
  • Recent service news: Load Balancer-related recent news
  • Frequently Asked Questions: the questions that Load Balancer users frequently ask
  • Contact us: send direct inquiries in case of any unresolved questions that aren't answered by the user guide

• User guides for integrated services required to use Load Balancer

  • Server Creation Guide: how to create a Server to bind to Load Balancer
  • VPC/Subnet user guide: how to create VPC/Subnet for Servers
  • ACG user guide: how to set ACG for Servers
  • Sub Account user guide: how to use Sub Account that helps managing Load Balancer and the managing permissions
  • Cloud Log Analytics user guide: how to use Cloud Load Analytics that manages logs of Load Balancer
  • Object Storage user guide: how to use Object Storage where you can pertinently store the Logs saved in Cloud Load Analytics
  • Certificate Manager user guide: how to register SSL certificates for Load Balancer

Check FAQs first.

Q. How many Load Balancers can I create?
A. You can create up to 50 Load Balancers per Region.

Q. How many servers can I bind to a Load Balancer?
A. A Load balancer can bind up to 100 servers.

Q. Can multiple servers be applied to a Load Balancer?
A. All servers in multiple zones can be applied to a Load Balancer. Also, you can apply the servers applied to other Load Balancers.

Q. How do I set a Load Balancer domain name to the service domain?
A. Follow the procedures below to set the domain name:

1. Click the Load Balancer to view the access information.
2. Click Services > Networking > Global DNS> Record, in order.
3. Click the [Add domain] button to add the domain.
4. Click the [Add record] button.
5. Enter the record name and enter the record value according to the following cases:
   • If it is added as A record, enter the Load Balancer IP provided as A record for your service's domain name.
   • If it is added as CNAME record, enter the Load Balancer domain provided as CNAME record for your service’s domain name.
     • <example> If the customer owns example.com domain,
       
     • <example> the CNAME for zone apex (-root domain) cannot be registered. (RFC1033)
       
6. Click the [Add] button.
   • The IP viewed from the Load Balancer DNS name can change based on scale changes and multi-zone use status. Make sure not to use the viewed IP instead of the provided DNS name to register to the service directly.
   • The DNS names provided through Load Balancer does not change. The service does not get affected when registered with DNS names.

Q. If I wish to define the permissions by action units through the User Created policy, do I need to be aware of the relations between actions?
A. When you select specific actions to grant to a sub account, the system offers a feature to automatically select the related actions as well.