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 adjusts the system operation 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 the Classic environment, and Application Load Balancer, Network Load Balancer, and Network Proxy Load Balancer is provided respectively in the VPC environment, so you can select a suitable Load Balancer for customer service.

Load Balancer features

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

VPC environment

Load Balancer provides the following features in the VPC environment:

• High-performance load balancing (Network Load Balancer): Specialized in high-capacity load balancing. Automatically adjusts performance based on the scale of your 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 integrating them with Certificate Manager.
• Various server load balancing methods (Application Load Balancer and Network Proxy Load Balancer): Provides 3 server load balancing 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 requests and forwards them to servers.
• Inline mode provision (Inline Load Balancer): Operates in an Inline manner in which network packets must be transferred without tampering, and used to ensure the stability of security appliances in SFC.
• Load Balancer monitoring: Provides the collected monitoring information by scheduled cycle.
• Load Balancer port configuration: Multiple Load Balancer rules can be applied at once.

Classic environment

Load Balancer provides the following features in the Classic environment:

• SSL authentication and encryption settings: You can manage and apply the certificates to Load Balancers by integrating with Certificate Manager.
• Load Balancer port configuration: Multiple Load Balancer rules can be applied at once.
• Load Balancer monitoring: Provides the collected monitoring information by scheduled cycle.
• Load Balancer management: After creating a Load Balancer, you can change the Connection Idle Time (connection hold time 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 is available in Korea, Singapore, U.S. West, Japan, and Germany Regions. Because the services provided differ by Region, the user guide contents are provided separately for each Region as follows:

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

Korea, Singapore, and Japan Regions

Use this guide to get the most out of Load Balancer in the Korea, Singapore, and Japan Regions.

• Load Balancer overview: Learn about the service and find helpful resources and FAQs.
• Load Balancer specifications: View specifications, service limits, and pricing information.
• Load Balancer quickstart: Follow a step-by-step guide through the entire process.
• Getting started with Load Balancer (VPC): Learn the preliminary tasks for using Load Balancer, how to create target groups, and how to create Load Balancers.
• Using Load Balancer (VPC): Learn how to access Load Balancer in the VPC environment.
  • Target Group interface: Target Group interface guide.
  • Create and manage target groups: Learn how to create, delete, and manage Target Groups.
  • Load Balancer interface: Learn about the Load Balancer interface provided in the VPC environment.
  • Create and manage Application Load Balancer: Learn how to create, delete, and manage Application Load Balancers.
  • Create and manage Network Load Balancer: Learn how to create, delete, and manage Network Load Balancers.
  • Create and manage Network Proxy Load Balancer: Learn how to create, delete, and manage Network Proxy Load Balancers.
  • Use multiple authentication: Learn how to use multiple TLS/SSL certificates.
• Load Balancer permissions management (VPC): Manage accounts using NAVER Cloud Platform's Sub Account.
• Getting started with Load Balancer (Classic): Learn the preliminary tasks for using Load Balancer, how to create Load Balancers, and how to change the status of Load Balancers.
• Using Load Balancer (Classic): Learn how to access Load Balancer in the Classic environment.
  • Load Balancer interface: Learn about the Load Balancer interface provided in the Classic environment.
  • Create and manage Load Balancer: Learn how to create, delete, and manage Load Balancers in the Classic environment.
• Load Balancer glossary: Find key terms and definitions.
• Load Balancer release notes: See documentation updates.

U.S. West and Germany Regions

Use this guide to get the most out Load Balancer in the U.S. West, Hong Kong, and Germany Regions.

• Load Balancer overview: Learn about the service and find helpful resources and FAQs.
• Load Balancer specifications: View specifications, service limits, and pricing information.
• Load Balancer quickstart: Follow a step-by-step guide through the entire process.
• Getting started with Load Balancer (Classic): Learn the preliminary tasks for using Load Balancer, how to create Load Balancers, and how to change the status of Load Balancers.
• Using Load Balancer (Classic): Learn how to access Load Balancer in the Classic environment.
  • Load Balancer interface: Learn about the Load Balancer interface provided in the Classic environment.
  • Create and manage Load Balancer: Learn how to create, delete, and manage Load Balancers in the Classic environment.
• Load Balancer glossary: Find key terms and definitions.
• Load Balancer release notes: See documentation updates.

Load Balancer related resources

Beyond the user guide, these resources provide additional context and support for Load Balancer. Whether you're considering Load Balancer or need in-depth information for development, marketing, and other purposes while establishing data related policies, these resources can help:

• Learn more about Load Balancer

  • Load Balancer (VPC) API guide: Learn how to use the Load Balancer API in the VPC environment.
  • Load Balancer (Classic) API guide: Learn how to use the Load Balancer API in the Classic environment.
  • Load Balancer CLI guide: Learn how to use the Load Balancer CLI.
  • Load Balancer quickstart guide: Learn how to distribute web service traffic using Auto Scaling and Load Balancer.
  • Ncloud user environment guide: Explore VPC and Classic environments and supported services.
  • Pricing and features: View pricing details and key capabilities.
  • Latest announcements: Stay informed about service updates and news.
  • FAQs: Get answers to common Load Balancer questions.
  • Contact Support: Get help if you can't find what you need in the user guide.

• Learn about integrated services

  • Server creation guide: Learn how to create a Server to bind to a Load Balancer.
  • VPC/Subnet user guides: Learn how to create a VPC/Subnet for a Server.
  • ACG user guide: Learn how to configure an ACG for a Server.
  • Sub Account user guide: Manage team access for Load Balancer.
  • Cloud Log Analytics user guide: Learn how to use Cloud Load Analytics that manages logs of Load Balancer.
  • Object Storage user guide: Learn how to use Object Storage where you can permanently store the logs saved in Cloud Load Analytics.
  • Certificate Manager user guide: Learn how to register SSL certificates for Load Balancer.

FAQs

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 1 Load Balancer?
A. A Load balancer can bind up to 100 servers.

Q. Can multiple servers be applied to 1 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 where you want to set the domain and view the access information.
2. In the NAVER Cloud Platform console, navigate to Menu > All Services > Networking > Global DNS > Record.
3. Click [Add domain] to add the domain.
4. Click [Add record].
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 [Add].
   • 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 do not change, so the service does not get affected when registered with DNS names.

Q. If I want 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 the main account selects specific actions to grant to a sub account, the system offers a feature to automatically select the related actions as well.