Automated cherry pick of #1214: doc/service: describe supported target group attributes#1314
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k8s-ci-robot merged 4 commits intokubernetes:release-1.34from Dec 10, 2025
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Document the new annotation for NLB to handle target group attributes, with examples and restrictions.
Implementing the hairpin connection test cases, and exposing an issue on NLB with internal scheme which fails when the client is trying to access a service loadbalancer which is hosted in the same node. The hairpin connection is caused by the client IP preservation attribute is set to true (default), and the service does not provide an interface to prevent the issue. The e2e is expecting to pass to prevent permanent failures in CI, but it is tracked by an issue kubernetes#1160.
Introduce pre-flight validations adding pre-flight checks for EnsureLoadBalancer with tasks to validate Service object constraints prior making calls to the provider. This aims to prevent changes to the resources when invalid configuration is provided. Currently only NLB target group attributes validations is added as part of this change. feat/tg-attr: support target group attrib annotation on NLB
Introduce the target group annotation[1] for all listeners on a Service type-loadBalancer NLB. [1] Annotation service.beta.kubernetes.io/aws-load-balancer-target-group-attributes The annotation provides a interface for users to opt into non-default configurations of a target group when creating or updating a Service. This change also provides a fix for a critical hairpin bug impacting NLB default configuration (using target type instance), which disables the 'preserve source ip configuration' attribute, leading to timeouts in such scenario.
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Cherry pick of #1214 on release-1.34.
#1214: doc/service: describe supported target group attributes
For details on the cherry pick process, see the cherry pick requests page.