skywalking-java/docs/en/setup/envoy/als_setting.md

Observe service mesh through ALS

Envoy ALS(access log service) provides fully logs about RPC routed, including HTTP and TCP.

You need three steps to open ALS.

1. Right now, Istio pilot hasn't supported to open ALS, so you have to change pilot codes.
2. Open SkyWalking envoy receiver.
3. Active ALS k8s-mesh analysis

envoy-metric:
  default:
    alsHTTPAnalysis:
      - k8s-mesh

Notice, only use this when using envoy under Istio controlled. Otherwise, you need to implement your own ALSHTTPAnalysis and register it to receiver.