[kube-prometheus-stack] set explicit HTTPRoute backendRef defaults#6719
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jkroepke merged 3 commits intoprometheus-community:mainfrom Mar 15, 2026
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Signed-off-by: Firas Mosbehi <firas.mosbehi@insat.ucar.tn>
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Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>
Signed-off-by: Ilia Lazebnik <Ilia.lazebnik@gmail.com>
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Summary
This PR explicitly sets default backendRef fields (
group,kind,weight) in kube-prometheus-stack HTTPRoute templates, addressing #6441.Problem
Gateway API defaulting adds backendRef fields server-side. Because the chart omitted these fields, GitOps tools (for example Argo CD) can observe perpetual diff churn: desired manifests omit fields while live objects include defaulted values.
Root cause
Route templates only rendered backendRef
nameandportfor Prometheus, Alertmanager, and Thanos Ruler HTTPRoutes.Fix
Updated all three route templates to explicitly render:
group: ""kind: Serviceweight: 1alongside existing
nameandport.Files updated:
templates/prometheus/route.yamltemplates/alertmanager/route.yamltemplates/thanos-ruler/route.yaml82.9.0 -> 82.9.1Validation
helm lint charts/kube-prometheus-stackhelm template test charts/kube-prometheus-stack --set prometheus.route.main.enabled=truegroup,kind, andweight.Compatibility
No functional behavior change for routing semantics; this aligns rendered manifests with Kubernetes-defaulted live state.