Add the Serval API and controller for the non-cluster host gateway#5067
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The cluster-scoped Serval resource supersedes the deprecated NonClusterHost. The serval controller renders the gateway Deployment (combined calico image, controlPlaneReplicas, service links disabled), Service, TLS keypair with the endpoint SAN, RBAC for the impersonating proxy and token/access reviews, and network policies. The fluent-bit input policy admits serval as a source, the host ClusterRole gains read on servals, and NonClusterHost reconciles log a deprecation warning. Design: tigera/designs 2026/serval-non-cluster-host-gateway. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Picks up the BPFOverlayHostSourceIP field via make gen-versions. Drop this commit if the CRD sync lands on master separately. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Description
New feature. Adds the
ServalAPI (operator.tigera.io/v1) and controller. Serval is a layer-7 gateway that becomes the single entrypoint for non-cluster hosts: one HTTPS endpoint serving the impersonating kube-apiserver proxy, the log ingestion routes, and a WebSocket tunnel that carries the felix-typha sync connection. It supersedes the deprecatedNonClusterHostresource;NonClusterHostkeeps working unchanged as a legacy mode until a later removal release.The controller renders the gateway Deployment (combined calico image,
controlPlaneReplicaswith pod anti-affinity,enableServiceLinks: false), a ClusterIP Service, an operator-issued TLS keypair including the external endpoint SAN, RBAC (impersonation, TokenReview/SubjectAccessReview create,geton serviceaccounts for the Tigera-JWT authenticator), and allow-tigera network policies. The fluent-bit input policy admits serval as a source, and the host ClusterRole gains read onservals.Testing: render unit tests, plus end-to-end validation of the rendered object shapes on a kubeadm Enterprise cluster with a Rocky 9 non-cluster host (felix in sync through the tunnel, apiserver proxy serving the cert-init and token-minting flows, logs flowing to linseed).
Companion PR (calico-private): https://github.com/tigera/calico-private/pull/12765
Design: tigera/designs
2026/serval-non-cluster-host-gatewayRelease Note
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