Tencent Cloud offers two methods for purchasing Cloud Load Balancer: through the official website and via API. This section will provide a detailed explanation of both purchasing options.
Purchasing a CLB instance on the official purchase page
All users can purchase a Cloud Load Balancer on the Tencent Cloud official website. Tencent Cloud accounts are divided into standard and traditional account types. Accounts registered after 00:00:00 on June 17, 2020, are of the standard account type. For accounts registered before this time, please check your account type in the console as instructed in Determining Account Type.
2. Select the following CLB configuration items as needed:
Standard Account Type
Category
Note
Billing
Both monthly subscription and pay-as-you-go billing modes are supported.
Regions
Select a region. For more information on the regions supported by CLB, see Region List.
Instance Type
Supports the CLB instance type only. Starting from October 20, 2021, classic CLB instances can no longer be purchased. For more information, see Classic CLB End-of-Sale Notice.
Network
Supports two network types: public network and private network. For more information, see Network Types.
Public network: CLB is used to distribute requests from the public network.
Private network: CLB is used to distribute requests from the Tencent Cloud private network. A private network instance does not support the following configuration items, and therefore they are not displayed by default: EIP, IP version, ISP, instance specification, network billing mode, and bandwidth cap.
The supported network types vary by billing mode:
In the monthly subscription mode, only the public network type is supported.
In pay-as-you-go billing mode, both the public and private network types are supported.
Elastic IP (EIP)
If EIP is not selected, Tencent Cloud will assign you a public network CLB instance whose public IP address cannot be changed. (By default, only non-EIP selection is supported for public network CLB instances with monthly or yearly subscription plans.)
If EIP is selected, Tencent Cloud will assign you an EIP and a private network CLB instance, which has the similar features of public network CLB. (Only pay-as-you-go public network CLB instances allow you to select an EIP.)
Supports the following CLB IP versions: IPv4, IPv6, and IPv6 NAT64. Only pay-as-you-go instances support the IPv6 version. For more information about other restrictions, see IP Versions. IPv6 CLB is currently in beta. To use it, submit a ticket.
Network
CLB supports two types of networks: Virtual Private Cloud (VPC) and Classic Network.
By contrast, the VPC is a logically isolated network space in Tencent Cloud. In a VPC, you can customize IP ranges, IP addresses, and routing policies.
The classic network is a public network resource pool shared by all Tencent Cloud users. The private IPs of all CVM instances are assigned by Tencent Cloud. You cannot customize IP ranges or IP addresses.
Compared to the classic network, a Virtual Private Cloud (VPC) is more suitable for scenarios requiring custom network configurations. Additionally, the classic network products will be officially discontinued on December 31, 2022. For more information, please refer to Classic Network End-of-Support Notice. We recommend choosing a VPC.
ISP Type
Supports the following ISP types: BGP (multi-line), China Mobile, China Telecom, and China Unicom.
In the pay-as-you-go mode, only the multi-line BGP ISP type is supported, and this configuration item is not displayed by default.
In pay-as-you-go billing mode, all of the above four options are supported. Currently, the static single-line IP is supported only in Guangzhou, Shanghai, Nanjing, Jinan, Hangzhou, Fuzhou, Beijing, Shijiazhuang, Wuhan, Changsha, Chengdu, and Chongqing. For the support information in other regions, see the console. If you want to try it out, contact the sales rep for application. Once your application is approved, you can select an ISP (China Mobile, China Unicom, or China Telecom) on the purchase page.
Primary/Secondary Availability Zone
The primary availability zone (AZ) is an AZ that currently sustains the traffic. The secondary AZ does not sustain traffic by default and will be used only when the primary AZ is unavailable. Currently, only IPv4 CLB instances in the Guangzhou, Shanghai, Nanjing, Beijing, Hong Kong (China), and Seoul regions support primary/secondary AZs.
Instance Specification
Shared and LCU-supported instances are supported.
Shared instances provide performance guarantees based on their specifications. A single shared instance can support up to 50,000 concurrent connections, 5,000 new connections per second, and 5,000 queries per second (QPS).
Performance-guaranteed instances provide performance assurance based on their specifications. A single instance can support up to 1 million concurrent connections, 100,000 new connections per second, and 50,000 queries per second (QPS). If you require a larger specification, you can submit a ticket to request it.
Network Billing Mode
The following network billing modes are supported: bill-by-bandwidth (monthly subscription and hourly bandwidth), bill-by-traffic, and bandwidth package.
For instances with a Monthly Subscription billing mode, only the bandwidth-based billing (monthly bandwidth) network billing mode is supported.
A pay-as-you-go instance supports three network billing modes: bill-by-bandwidth (hourly bandwidth), bill-by-traffic, and bandwidth package.
Bandwidth cap
The bandwidth cap for shared public network CLB instances is 2 Gbps, while the recommended bandwidth cap for shared private network CLB instances should not exceed 5 Gbps.
The bandwidth cap for LCU-supported CLB instances depends on the selected specifications. For more information, please refer to Instance Specification Comparison.
The name can contain up to 60 characters, including letters, numbers, hyphens, underscores, and dots. If it is not specified, a name will be automatically generated by default.
Bill-by-CVM account
Category
Note
Billing
Supports pay-as-you-go billing only.
Regions
Select a region. For more information on the regions supported by CLB, see Region List.
Instance Type
Supports the CLB instance type only. Starting from October 20, 2021, classic CLB instances can no longer be purchased. For more information, see Classic CLB End-of-Sale Notice.
Network
Supports two network types: public network and private network. For more information, see Network Types.
Public network: CLB is used to distribute requests from the public network.
Private network: CLB is used to distribute requests from the Tencent Cloud private network. A private network instance does not support the following configuration items, and therefore they are not displayed by default: IP version, ISP, and instance specification.
IP Version
Supports the following CLB IP versions: IPv4, IPv6, and IPv6 NAT64. For more information about use limits, see IP Versions. IPv6 CLB is currently in beta. To use it, submit a ticket.
Network
CLB supports two types of networks: Virtual Private Cloud (VPC) and Classic Network.
By contrast, the VPC is a logically isolated network space in Tencent Cloud. In a VPC, you can customize IP ranges, IP addresses, and routing policies.
The classic network is a public network resource pool shared by all Tencent Cloud users. The private IPs of all CVM instances are assigned by Tencent Cloud. You cannot customize IP ranges or IP addresses.
Compared to the classic network, a Virtual Private Cloud (VPC) is more suitable for scenarios requiring custom network configurations. Additionally, the classic network products will be officially discontinued on December 31, 2022. For more information, please refer to Classic Network End-of-Support Notice. We recommend choosing a VPC.
ISP Type
Supports the following ISP types: BGP (multi-line), China Mobile, China Telecom, and China Unicom.
Currently, the static single-line IP is supported only in Guangzhou, Shanghai, Nanjing, Jinan, Hangzhou, Fuzhou, Beijing, Shijiazhuang, Wuhan, Changsha, Chengdu, and Chongqing. For the support information in other regions, see the console. If you want to try it out, contact the sales rep for application. Once your application is approved, you can select an ISP (China Mobile, China Unicom, or China Telecom) on the purchase page.
Instance Specification
Shared and LCU-supported instances are supported.
Shared instances provide performance guarantees based on their specifications. A single shared instance can support up to 50,000 concurrent connections, 5,000 new connections per second, and 5,000 queries per second (QPS).
Performance-guaranteed instances provide performance assurance based on their specifications. A single instance can support up to 1 million concurrent connections, 100,000 new connections per second, and 50,000 queries per second (QPS). If you require a larger specification, you can submit a ticket to request it.
The name can contain up to 60 characters, including letters, numbers, hyphens, underscores, and dots. If it is not specified, a name will be automatically generated by default.
3. After completing the above configuration, confirm the purchase duration (supported only for the monthly/yearly subscription mode), quantity, and fees, then click Buy Now.
For the Monthly Subscription Plan: Proceed to the confirmation page, and if you have a product voucher, select the option to use it. Verify the information is correct and click Submit Order. Choose your preferred payment method on the payment page and complete the transaction.
For the Pay-as-you-go model: In the pop-up "Load Balancer Order Confirmation" dialog box, click Confirm Order.
4. After successful purchase, CLB will be activated and you can configure and use the CLB instance.
2. Refer to the above Official Website Purchase operation steps, select the shared load balancing instance configuration as needed, and choose Shared under "Instance Specifications".
