ALB Ingresses are developed based on Application Load Balancer (ALB) and serve as unified ingresses for Services in Container Service for Kubernetes (ACK) clusters. This topic describes the usage notes and release notes for the ALB Ingress controller.
Usage notes
For more information about the ALB Ingress controller, see ALB Ingress overview.
For more information about how to install the ALB Ingress controller, see Manage the ALB Ingress controller and Create an ALB Ingress.
Due to the security limits of ACK managed clusters, you cannot install ALB Ingress controller v2.12.0-aliyun.1 or earlier versions in ACK managed clusters created after May 2024. Install the latest version of the component at the earliest opportunity for improved experience and stability.
Release notes
September 2024
Version number | Release date | Description | Impact |
v2.14.0-aliyun.1 | 2024-09-10 | The Google Remote Procedure Call (gRPC) protocol is supported by the health check for server groups. Slow start is supported. Connection draining is supported. Session persistence between server groups is supported. The issue that the status of ReadinessGate cannot be updated correctly in certain scenarios is fixed. Error messages for Secrets is optimized. The reconciliation logic for configuring state in server groups is optimized. AlbConfig fields are case-insensitive.
| No impact on workloads. |
July 2024
Version number | Release date | Description | Impact |
v2.13.2-aliyun.1 | 2024-07-23 | The issue that the ALB Ingress controller may crash due to invalid AlbConfig format is fixed. The issue that weights may be set incorrectly when the cluster uses both Elastic Compute Service (ECS) instances and elastic container instances is fixed for the Flannel network plug-in.
| No impact on workloads. |
May 2024
Version number | Release date | Description | Impact |
v2.13.1-aliyun.1 | 2024-05-10 | A new event is supported. This event is generated when an AlbConfig is not associated with an Ingress. The issue that weights may be set incorrectly after endpoint updates is fixed for the Flannel network plug-in. The issue that server group creation fails when the namespace name starts with a number or when the namespace or Service name is excessively long is fixed.
| No impact on workloads. |
February 2024
Version number | Release date | Description | Impact |
v2.12.0-aliyun.1 | 2024-02-05 | The alb.ingress.kubernetes.io/server-group-type: Ip annotation can be used to specify IP type server groups. The alb.ingress.kubernetes.io/server-group-resource-group-id annotation can be used to specify the resource group used by a server group. The Flannel plug-in can automatically configure the weight of a node based on the number of pods on the node. Queries per second (QPS) throttling is supported by custom forwarding rules. ALB instances can be created without specifying an IP address allocation mode (addressAllocateMode). Trusted IP addresses can be configured for the X-Forwarded-For request header. The issue that some fields in an AlbConfig do not take effect after their values change from NULL to false is fixed.
| No impact on workloads. |
November 2023
Version number | Release date | Description | Impact |
v2.11.1-aliyun.1 | 2023-11-20 | The issue that the ALB Ingress controller may crash when no IngressClass is specified is fixed. | No impact on workloads. |
October 2023
Version number | Release date | Description | Impact |
v2.11.0-aliyun.1 | 2023-10-31 |
Important ALB Ingress controller v2.11.0-aliyun.1 and later do not automatically update the port information in an AlbConfig. You need to manually specify the port to be used when you create the AlbConfig. For more information about how to create an AlbConfig, see Access Services by using an ALB Ingress. Rate limiting for source IP addresses is supported. Managed Service for OpenTelemetry is supported. Custom headers are supported by access logs. Mutual authentication is supported. The AlbConfig is no longer automatically updated when Ingress rules are updated. You cannot remove listeners that are configured with Ingress rules from the AlbConfig. Resource deletion in scenarios where the ALB instance is reused is optimized. The certificate association logic is optimized and multiple certificates are supported. The error that occurs when you enable HTTP/2 is fixed. The issue that the ALB Ingress controller may crash when forwarding actions are not properly configured is fixed. The issue that backend server groups may not be updated promptly when the ALB Ingress controller restarts is fixed.
| No impact on workloads. |
August 2023
Version number | Release date | Description | Impact |
v2.10.0-aliyun.1 | 2023-08-15 | Hash values can be added to Ingresses and the AlbConfig to ensure that no unexpected changes occur when the ALB Ingress controller restarts. The exposure of abnormal events is optimized. The reconciliation process is optimized for scenarios in which reserved fields are used. The issue that the cache is not synchronized after Ingress resources are deleted is fixed. The issue that node event handling is interrupted is fixed. The synchronization logic of server groups is optimized.
| No impact on workloads. |
July 2023
Version number | Release date | Description | Impact |
v2.9.0-aliyun.1 | 2023-07-11 | API throttling can be avoided when multiple server groups are reconciled with a Service. Service reconciliation events are exposed. The use of the ssl-redirect annotation is optimized. ShangMi (SM) certificates can be automatically discovered and filtered. The issue related to the reconciliation of CookieConfig in custom forwarding rules is fixed. The following issue is fixed: The ALB Ingress controller crashes if the http field of an Ingress is not configured. The following issue is fixed: Configuration updates fail if multiple actions are specified in the configuration of an Ingress.
| No impact on workloads. |
June 2023
Version number | Release date | Description | Impact |
v2.8.3-aliyun.1 | 2023-06-05 | | No impact on workloads. |
May 2023
Version number | Release date | Description | Impact |
v2.8.2-aliyun.1 | 2023-05-25 | The issue that forwarding rules may be deleted when the pods of the component are restarted is fixed. Internet Shared Bandwidth instances are no longer deleted during the reconciliation process. The network type of the ALB instance used by the component cannot be changed. This is a temporary change.
| No impact on workloads. |
v2.8.1-aliyun.1 | 2023-05-09 | By default, the managed ALB Ingress controller is deployed in multiple replicated pods to ensure high availability. Resource groups can be specified when you create ALB instances. Multiple status codes are supported by health checks. Consistent hashing is supported for distributing traffic to backend server groups. The use-regex annotation is supported. The ALB Ingress controller can be deployed in a single zone. The network types of ALB instances can be changed. Internet Shared Bandwidth instances can be associated with ALB instances. Asynchronous API operations are optimized. Error messages are optimized. The issue that the default certificates displayed in the console are different from the actual default certificates used by ALB instances and the issue that the default certificates used by ALB instances are repeatedly specified are fixed.
| No impact on workloads. |
March 2023
Version number | Release date | Description | Impact |
v2.7.0-aliyun.1 | 2023-03-14 | The reconciliation process and rule priorities are optimized to accelerate rule synchronization. Event notifications are optimized. Services can be reconciled with backend server groups. Network access control lists (ACLs) can be associated with ALB instances by specifying the IDs of the network ACLs. HTTPS and QUIC services can be deployed on the same port. Multiple server groups, rewrites, and uppercase and lowercase letters are supported by custom actions. Certificates that are configured by using Secrets have higher priorities than AlbConfigs. Hard-coded timeout values are removed. Configuration errors of Gzip compression are fixed.
| No impact on workloads. |
December 2022
Version number | Release date | Description | Impact |
v2.6.0-aliyun.1 | 2022-12-23 | Custom tags can be added to ALB instances. Event notifications are optimized. No finalizers are configured for Ingress deletions. This fixes the issue that Ingresses are stuck when you delete them. Issues that occur when you switch the network type of an ALB instance to IPv6 are fixed. The issue that Ingress certificates are repeatedly discovered is fixed. The issue that the tags of backend server groups become invalid during canary releases is fixed.
| No impact on workloads. |
November 2022
Version number | Release date | Description | Impact |
v2.5.0-aliyun.1 | 2022-11-23 | Secret certificates can be uploaded. Custom headers and cookies are supported. Network ACLs can be configured as whitelists. The processing logic of listeners is optimized. Errors that occur on listening port 443 do not affect reconciliations of port 80.
| No impact on workloads. |
August 2022
Version number | Release date | Description | Impact |
v2.4.0-aliyun.1 | 2022-08-10 | Cross-origin resource sharing (CORS) is supported. Persistent connections to backend servers are supported. The processing logic of listener deletion is optimized.
| No impact on workloads. |
June 2022
Version number | Release date | Description | Impact |
v2.3.0-aliyun.1 | 2022-06-23 | | No impact on workloads. |
April 2022
Version number | Release date | Description | Impact |
v2.2.0-aliyun.1 | 2022-04-13 | Rewrite rules are supported. You can add annotations to configure rewrite rules. For more information, see Configure rewrite rules. TCP can be specified as the health check protocol. The ALB instance sends SYN packets to a backend server to check whether the port of the backend server is available to receive requests. For more information, see Configure health checks. TLS security policies are supported. When you use an AlbConfig to configure HTTPS listeners, you can specify a TLS security policy. For more information, see Specify a custom TLS security policy.
| No impact on workloads. |