api gateway ratelimit problem.

k8s: v1.19.7 image: ambassador:1.12.4 installation: helm3 Follow the doc https://www.getambassador.io/docs/edge-stack/latest/howtos/rate-limiting-tutorial/

simple limit service deployed and running. when create the mapping:

---
apiVersion: getambassador.io/v2
kind: Mapping
metadata:
  name: service-backend
spec:
  prefix: /backend/
  service: quote
  labels:
    ambassador:    
      - request_label_group:      
        - x-ambassador-test-allow:        
          header: "x-ambassador-test-allow"
          omit_if_not_present: true

ambassador pod report error, pod log:

could not validate the envoy configuration above after 5 retries, failed with error 
[2021-04-23 06:10:45.637][117][info][main] [source/server/server.cc:555] runtime: layers:
  - name: static_layer
    static_layer:
      envoy.deprecated_features:envoy.api.v2.route.HeaderMatcher.regex_match: true
      envoy.deprecated_features:envoy.config.filter.http.ext_authz.v2.ExtAuthz.use_alpha: true
      envoy.reloadable_features.ext_authz_http_service_enable_case_sensitive_string_matcher: false
      envoy.deprecated_features:envoy.config.trace.v2.ZipkinConfig.HTTP_JSON_V1: true
      envoy.deprecated_features:envoy.api.v2.route.RouteMatch.regex: true
[2021-04-23 06:10:45.637][117][info][config] [source/server/configuration_impl.cc:103] loading tracing configuration
[2021-04-23 06:10:45.637][117][info][config] [source/server/configuration_impl.cc:69] loading 0 static secret(s)
[2021-04-23 06:10:45.637][117][info][config] [source/server/configuration_impl.cc:75] loading 6 cluster(s)
[2021-04-23 06:10:45.638][117][info][config] [source/server/configuration_impl.cc:79] loading 1 listener(s)
[2021-04-23 06:10:45.643][117][critical][main] [source/server/config_validation/server.cc:60] error initializing configuration '/ambassador/snapshots/econf-tmp.json': Proto constraint validation failed (HttpConnectionManagerValidationError.RouteConfig: ["embedded message failed validation"] | caused by RouteConfigurationValidationError.VirtualHosts[i]: ["embedded message failed validation"] | caused by VirtualHostValidationError.Routes[i]: ["embedded message failed validation"] | caused by RouteValidationError.Route: ["embedded message failed validation"] | caused by RouteActionValidationError.RateLimits[i]: ["embedded message failed validation"] | caused by RateLimitValidationError.Actions[i]: ["embedded message failed validation"] | caused by ActionValidationError.GenericKey: ["embedded message failed validation"] | caused by GenericKeyValidationError.DescriptorValue: ["value length must be at least " '\x01' " bytes"]): stat_prefix: "ingress_http"

[balazs92117]

Almost 1 year later, it still doesn’t work…

[attilaersek]

I also tested the RateLimitService with the latest and 2.0 versions and I can confirm that the functionality is not working. Any update on this?