K3s v1.34.10+k3s1: Traefik Provider Rename And Build Fix

K3s v1.34.10+k3s1 was published on August 4, 2026. Its main operator visible change is a breaking Traefik chart v40 provider rename for clusters using the ingress-nginx migration path. The release also moves the embedded Kubernetes baseline to v1.34.10.

The full release notes and downloads are on the GitHub release page.

The bundled Traefik release is v3.7.8, delivered through chart v40. For the ingress-nginx migration provider, kubernetesIngressNginx becomes kubernetesIngressNGINX. Capitalization is configuration here, so existing values must use the new provider name after the chart update.

Before upgrading, search Helm values, GitOps manifests, and generated configuration for the old key. The change is narrow, but it is explicitly breaking for the migration path. Clusters that do not use that provider still receive the Traefik update, yet they do not have this setting to rename. The Traefik chart v40 release notes contain the upstream details referenced by K3s.

This release updates Kubernetes from the prior K3s baseline to v1.34.10. The linked Kubernetes changelog is the source for changes between Kubernetes v1.34.9 and v1.34.10; the K3s notes do not restate those fixes.

Etcd is bumped to v3.6.14-k3s1. The published component table also pins Kine at v0.16.3, SQLite at 3.53.2, and containerd at v2.2.5-k3s2. For stateful pipeline clusters, this is a coordinated control plane and local state baseline change, not only an API server binary update. The release notes list no separate schema migration procedure.

The image set changes as well. The mirrored pause image is bumped to 3.10.2, CoreDNS is v1.14.6, and metrics server is v0.9.0. Air gapped clusters and clusters with allowlisted registries need those artifacts before rollout. Compare the target image set with the private registry inventory before draining the first node.

Helm controller and klipper-helm were updated with support for --force-conflicts. That flag matters when field ownership conflicts prevent managed charts from converging. The notes describe support for the flag, but do not claim that conflict forcing is enabled by default. Operators should therefore inspect their controller arguments instead of assuming behavior changed automatically.

PR #14468 fixes production builds that always enabled Go coverage instrumentation. This is build correctness work, not a new runtime feature, and the notes provide no performance measurements. Teams producing their own binaries should remove any assumptions based on the accidental instrumentation.

Snapshot pruning also gets a correction to a typo in its event text. That is small, but consumers that match event messages literally should compare their rules after the upgrade. The release does not document the old and new strings, so broad event matching remains safer than guessing at either value.

This is a stable release, not a prerelease. The documented breaking item is the Traefik provider rename. Validate the chart values before rollout, then stage the upgrade on a cluster that exercises ingress migration and managed Helm charts. Review the complete K3s v1.34.10+k3s1 release notes for the backport and component references included in the tag.