feat: promote native sidecars to GA and enable by default#15267
Merged
Conversation
Advances [native sidecars](https://kubernetes.io/docs/concepts/workloads/pods/sidecar-containers/) support from beta to GA, and makes them the default injection mode for the proxy. This requires Kubernetes v1.29 or later, which is below our current minimum supported version (v1.31). The cluster must also have the `SidecarContainers` feature gate enabled, which is the default in all recent Kubernetes versions. You can verify the feature gate is enabled with: ``` $ kubectl get --raw /metrics | grep feature.*SidecarContainers kubernetes_feature_enabled{name="SidecarContainers",stage=""} 1 ``` Changes: - `proxy.nativeSidecar` now defaults to `true` - The `config.beta.linkerd.io/proxy-enable-native-sidecar` annotation is deprecated in favor of `config.linkerd.io/proxy-enable-native-sidecar`
adleong
approved these changes
May 12, 2026
alpeb
added a commit
that referenced
this pull request
May 14, 2026
Now that native sidecars are enabled by default since #15267, repurpose the `deep-native-sidecar` test into `deep-non-native-sidecar`, so that it runs the deep suite using the now non-default non-native-sidecar mode.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Advances native sidecars support from beta to GA, and makes them the default injection mode for the proxy.
This requires Kubernetes v1.29 or later, which is below our current minimum supported version (v1.31). The cluster must also have the
SidecarContainersfeature gate enabled, which is the default in all recent Kubernetes versions.You can verify the feature gate is enabled with:
Changes:
proxy.nativeSidecarnow defaults totrueconfig.beta.linkerd.io/proxy-enable-native-sidecarannotation is deprecated in favor ofconfig.linkerd.io/proxy-enable-native-sidecar