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DocumentationCloud Load BalancerRelease Notes and Announcements[Feb. 24, 2023] Changing Health Check Source IP to 100.64.0.0/10 IP Range
[Feb. 24, 2023] Changing Health Check Source IP to 100.64.0.0/10 IP Range
Last updated: 2024-01-04 09:44:16
[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.
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