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feat(chart): Add grpcRoute support for hubble-relay #2394

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feat(chart): Add grpcRoute support for hubble-relay #2394

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db2bc92
feat(chart): Add grpcRoute support for hubble-relay
slariviere May 28, 2026
22c603a
fix: Add tpl to httproute hostnames
slariviere May 29, 2026
7232498
Merge branch 'main' into feat/hubble-relay-grpcroute
slariviere Jun 5, 2026
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39 changes: 39 additions & 0 deletions deploy/hubble/manifests/controller/helm/retina/templates/hubble-relay/grpcroute.yaml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,39 @@
{{- if and (or .Values.hubble.enabled .Values.hubble.relay.standalone.enabled) .Values.hubble.relay.enabled .Values.hubble.relay.grpcRoute.enabled }}
{{- $port := .Values.hubble.relay.grpcRoute.port | default .Values.hubble.relay.servicePort | default (.Values.hubble.relay.tls.server.enabled | ternary 443 80) -}}
apiVersion: gateway.networking.k8s.io/v1
kind: GRPCRoute
metadata:
name: hubble-relay
namespace: {{ .Values.namespace }}
labels:
k8s-app: hubble-relay
app.kubernetes.io/name: hubble-relay
app.kubernetes.io/part-of: cilium
{{- with .Values.hubble.relay.grpcRoute.labels }}
{{- toYaml . | nindent 4 }}
{{- end }}
{{- if or .Values.hubble.relay.grpcRoute.annotations .Values.hubble.relay.annotations }}
annotations:
{{- with .Values.hubble.relay.annotations }}
{{- toYaml . | nindent 4 }}
{{- end }}
{{- with .Values.hubble.relay.grpcRoute.annotations }}
{{- toYaml . | nindent 4 }}
{{- end }}
{{- end }}
spec:
{{- if .Values.hubble.relay.grpcRoute.parentRefs }}
parentRefs:
{{- toYaml .Values.hubble.relay.grpcRoute.parentRefs | nindent 4 }}
{{- end }}
{{- if .Values.hubble.relay.grpcRoute.hostnames }}
hostnames:
{{- range .Values.hubble.relay.grpcRoute.hostnames }}
- {{ tpl . $ | quote }}
{{- end }}
{{- end }}
rules:
- backendRefs:
- name: hubble-relay
port: {{ $port }}
{{- end }}
4 changes: 4 additions & 0 deletions deploy/hubble/manifests/controller/helm/retina/templates/hubble-relay/service.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@ spec:
k8s-app: hubble-relay
ports:
- protocol: TCP
name: grpc
{{- if .Values.hubble.relay.servicePort }}
port: {{ .Values.hubble.relay.servicePort }}
{{- else }}
Expand All @@ -30,4 +31,7 @@ spec:
{{- if and (eq "NodePort" .Values.hubble.relay.service.type) .Values.hubble.relay.service.nodePort }}
nodePort: {{ .Values.hubble.relay.service.nodePort }}
{{- end }}
{{- with .Values.hubble.relay.service.appProtocol }}
appProtocol: {{ . }}
{{- end }}
{{- end }}
2 changes: 1 addition & 1 deletion deploy/hubble/manifests/controller/helm/retina/templates/hubble-ui/httproute.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -30,7 +30,7 @@ spec:
{{- if .Values.hubble.ui.httpRoute.hostnames }}
hostnames:
{{- range .Values.hubble.ui.httpRoute.hostnames }}
- {{ . }}
- {{ tpl (. | toString) $ }}
{{- end }}
{{- end }}
rules:
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18 changes: 18 additions & 0 deletions deploy/hubble/manifests/controller/helm/retina/values.yaml
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Expand Up @@ -534,6 +534,24 @@ hubble:
# by being built into the Service API and offering more predictable routing behavior.
# See https://kubernetes.io/docs/concepts/services-networking/service/#traffic-distribution
trafficDistribution: ""
appProtocol: "grpc"

# -- hubble-relay GRPCRoute configuration (Gateway API).
# Requires Kubernetes 1.26+ or Gateway API CRDs to be pre-installed.
grpcRoute:
enabled: false
annotations: {}
labels: {}
# -- Parent Gateways that this route is attached to.
parentRefs:
- name: example-gateway
namespace: default
sectionName: example-listener
# -- Hostnames for this GRPCRoute.
hostnames:
- chart-example.local
# -- Backend port number. Defaults to the service port (80 for plain, 443 for TLS).
port: ~

# -- Host to listen to. Specify an empty string to bind to all the interfaces.
listenHost: ""
Expand Down