- Release Notes and Announcements
- CLB Release Notes
- [April 15, 2024] Domain Name Upgrade for Domain Name-based Public Network CLB
- [July 25, 2023] Adding Rate Limits on Shared CLB Instances
- [July 3, 2023] CLB API Authentication Upgrade
- [June 9, 2023] Adjusting the Grace Period for Pay-as-you-go CLB Instances
- [March 6, 2023] Launching Domain Name-Based Public CLBs
- [Feb. 24, 2023] Changing Health Check Source IP to 100.64.0.0/10 IP Range
- Product Introduction
- Purchase Guide
- Getting Started
- Operation Guide
- CLB Instance
- Directions for Upgrading to Domain Name-Based CLB
- Creating CLB Instances
- Creating an IPv6 CLB Instance
- Creating IPv6 NAT64 CLB Instances
- Configure CLB Forwarding Domain Name
- Configuring CLB Security Group
- Binding Private Network CLB to EIP
- Enabling or Disabling a CLB Instance
- Cloning CLB Instances
- Exporting CLB Instances
- Upgrade to a LCU-supported instances
- Adjusting Specification of LCU-supported CLBs
- Deleting CLB Instances
- Releasing Idle CLB Instances
- Configuring Deletion Protection
- Adjusting Instance Public Network Configurations
- CLB Listener
- CLB Listener Overview
- Configuring TCP Listener
- Configuring a UDP Listener
- Configuring TCP SSL Listener
- Configuring a QUIC Listener
- Configuring an HTTP Listener
- Configuring HTTPS Listener
- Load Balancing Methods
- Session Persistence
- Layer-7 Redirection Configuration
- Layer-7 Custom Configuration
- Layer-7 Domain Name Forwarding and URL Rules
- Using QUIC Protocol on CLB
- SNI Support for Binding Multiple Certificates to a CLB Instance
- Configuring gRPC Support for Layer-7 Protocols
- Real Server
- Health Check
- Certificate Management
- Log Management
- Monitoring and Alarm
- Cloud Access Management
- Classic CLB
- CLB Instance
- Practical Tutorial
- Enabling Gzip Compression & Testing
- HTTPS Forwarding Configurations
- Obtaining Real Client IPs
- Best Practices for Configuring Load Balancing Monitoring Alerts
- Implementing HA Across Multiple AZs
- Load Balancing Algorithm Selection and Weight Configuration Examples
- Configuring WAF protection for CLB listening domain names
- Configure IAP to authenticate web access to the CLB domain and path
- Configure IAP to authenticate programmatic access to CLB's domain and path
- Ops Guide
- Troubleshooting
- API Documentation
- History
- Introduction
- API Category
- Instance APIs
- Listener APIs
- Backend Service APIs
- Target Group APIs
- Redirection APIs
- Other APIs
- DescribeClsLogSet
- CreateLoadBalancerSnatIps
- DeleteLoadBalancerSnatIps
- DescribeLoadBalancerListByCertId
- DescribeQuota
- ModifyLoadBalancersProject
- ReplaceCertForLoadBalancers
- SetLoadBalancerClsLog
- SetLoadBalancerSecurityGroups
- SetLoadBalancerStartStatus
- SetSecurityGroupForLoadbalancers
- CreateClsLogSet
- CreateTopic
- DescribeLoadBalancerTraffic
- DescribeResources
- DescribeTaskStatus
- InquiryPriceCreateLoadBalancer
- InquiryPriceModifyLoadBalancer
- InquiryPriceRenewLoadBalancer
- Classic CLB APIs
- Making API Requests
- Load Balancing APIs
- Data Types
- Error Codes
- CLB API 2017
- FAQs
- Service Level Agreement
- Contact Us
- Glossary
- Release Notes and Announcements
- CLB Release Notes
- [April 15, 2024] Domain Name Upgrade for Domain Name-based Public Network CLB
- [July 25, 2023] Adding Rate Limits on Shared CLB Instances
- [July 3, 2023] CLB API Authentication Upgrade
- [June 9, 2023] Adjusting the Grace Period for Pay-as-you-go CLB Instances
- [March 6, 2023] Launching Domain Name-Based Public CLBs
- [Feb. 24, 2023] Changing Health Check Source IP to 100.64.0.0/10 IP Range
- Product Introduction
- Purchase Guide
- Getting Started
- Operation Guide
- CLB Instance
- Directions for Upgrading to Domain Name-Based CLB
- Creating CLB Instances
- Creating an IPv6 CLB Instance
- Creating IPv6 NAT64 CLB Instances
- Configure CLB Forwarding Domain Name
- Configuring CLB Security Group
- Binding Private Network CLB to EIP
- Enabling or Disabling a CLB Instance
- Cloning CLB Instances
- Exporting CLB Instances
- Upgrade to a LCU-supported instances
- Adjusting Specification of LCU-supported CLBs
- Deleting CLB Instances
- Releasing Idle CLB Instances
- Configuring Deletion Protection
- Adjusting Instance Public Network Configurations
- CLB Listener
- CLB Listener Overview
- Configuring TCP Listener
- Configuring a UDP Listener
- Configuring TCP SSL Listener
- Configuring a QUIC Listener
- Configuring an HTTP Listener
- Configuring HTTPS Listener
- Load Balancing Methods
- Session Persistence
- Layer-7 Redirection Configuration
- Layer-7 Custom Configuration
- Layer-7 Domain Name Forwarding and URL Rules
- Using QUIC Protocol on CLB
- SNI Support for Binding Multiple Certificates to a CLB Instance
- Configuring gRPC Support for Layer-7 Protocols
- Real Server
- Health Check
- Certificate Management
- Log Management
- Monitoring and Alarm
- Cloud Access Management
- Classic CLB
- CLB Instance
- Practical Tutorial
- Enabling Gzip Compression & Testing
- HTTPS Forwarding Configurations
- Obtaining Real Client IPs
- Best Practices for Configuring Load Balancing Monitoring Alerts
- Implementing HA Across Multiple AZs
- Load Balancing Algorithm Selection and Weight Configuration Examples
- Configuring WAF protection for CLB listening domain names
- Configure IAP to authenticate web access to the CLB domain and path
- Configure IAP to authenticate programmatic access to CLB's domain and path
- Ops Guide
- Troubleshooting
- API Documentation
- History
- Introduction
- API Category
- Instance APIs
- Listener APIs
- Backend Service APIs
- Target Group APIs
- Redirection APIs
- Other APIs
- DescribeClsLogSet
- CreateLoadBalancerSnatIps
- DeleteLoadBalancerSnatIps
- DescribeLoadBalancerListByCertId
- DescribeQuota
- ModifyLoadBalancersProject
- ReplaceCertForLoadBalancers
- SetLoadBalancerClsLog
- SetLoadBalancerSecurityGroups
- SetLoadBalancerStartStatus
- SetSecurityGroupForLoadbalancers
- CreateClsLogSet
- CreateTopic
- DescribeLoadBalancerTraffic
- DescribeResources
- DescribeTaskStatus
- InquiryPriceCreateLoadBalancer
- InquiryPriceModifyLoadBalancer
- InquiryPriceRenewLoadBalancer
- Classic CLB APIs
- Making API Requests
- Load Balancing APIs
- Data Types
- Error Codes
- CLB API 2017
- FAQs
- Service Level Agreement
- Contact Us
- Glossary
[Feb. 24, 2023] Changing Health Check Source IP to 100.64.0.0/10 IP Range
Last updated: 2024-01-04 09:44:16
Dear user,
Starting from February 24, 2023 at 12:00:00 (UTC+8), the health check source IP address of each Tencent Cloud Load Balancer (CLB) instance will be upgraded from a CLB VIP to the 100.64.0.0/10 IP range. This can help prevent IP conflicts and better control the real server policies.
For new CLB users after the upgrade, 100.64.0.0/10 IP range is used by default. Existing users can choose to remain the current VIP unchanged, or change to 100.64.0.0/10 in the console or by using API.
User Type | Description |
New users | Users who do not have any CLB instances by 12:00:00 (UTC+8) February 24, 2023. |
Existing users | Users who have CLB instances by 12:00:00 (UTC+8) February 24, 2023. |
Reminders
For CLB instances whose health check source IP address falls into the 100.64.0.0/10 IP range, you do not need to add this IP range to the allowlist of the security group of the associated real servers. If the real servers are configured with other security policies (such as iptables), this IP range must be added to the allowlist. Otherwise, health check failures may be caused.
If the associated real servers are under the same account as the CLB instances, 100.64.0.0/10 is added to the allowlist of the security group of the real servers by default. For real servers under a different account from the CLB instances, you need to log in with the related account and upgrade the CLB configurations.
Console Operations
API Operations
For layer-4 listeners, call ModifyListener and set
SourceIpType to 1.For layer-7 listeners, call ModifyRule and set
SourceIpType to 1.
Yes
No
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