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core/v1: add comments about why Service internalTrafficPolicy is not forbidden when type is ExternalName

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Signed-off-by: Andrew Sy Kim <kim.andrewsy@gmail.com>
This commit is contained in:
Andrew Sy Kim 2021-09-08 16:15:18 -04:00
parent 99cb5d2f21
commit 5d2702b0fd
1 changed files with 2 additions and 0 deletions
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2
pkg/apis/core/validation/validation.go
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@ -4809,6 +4809,8 @@ func validateServiceInternalTrafficFieldsValue(service *core.Service) field.Erro
if utilfeature.DefaultFeatureGate.Enabled(features.ServiceInternalTrafficPolicy) {
if service.Spec.InternalTrafficPolicy == nil {
// We do not forbid internalTrafficPolicy on other Service types because of historical reasons.
// We did not check that before it went beta and we don't want to invalidate existing stored objects.
if service.Spec.Type == core.ServiceTypeNodePort ||
service.Spec.Type == core.ServiceTypeLoadBalancer || service.Spec.Type == core.ServiceTypeClusterIP {
allErrs = append(allErrs, field.Required(field.NewPath("spec").Child("internalTrafficPolicy"), ""))