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add istioctl ALS command for document (#5066) 

* add istioctl ALS command

* add note
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wangwei 2020-07-09 15:06:45 +08:00 committed by GitHub
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docs/en/setup/envoy/als_setting.md
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@ -11,6 +11,13 @@ SkyWalking is the first open source project introducing this ALS based solution
You need three steps to open ALS.
1. Open envoyAccessLogService in istio by [enabling **envoyAccessLogService** in ProxyConfig](https://istio.io/docs/reference/config/istio.mesh.v1alpha1/#ProxyConfig).
Upper istio 1.6.0, if istio installed by demo profile, you can open ALS ues command:
```
istioctl manifest apply --set profile=demo --set meshConfig.defaultConfig.envoyAccessLogService.address=skywalking-oap.skywalking.svc:11800 --set meshConfig.enableEnvoyAccessLogService=true
```
Note:Skywalking oap service is at skywalking namespace, and the port of gRPC service is 11800
2. Open SkyWalking [envoy receiver](../backend/backend-receivers.md).
3. Active ALS k8s-mesh analysis
```yaml
@ -21,3 +28,5 @@ envoy-metric:
Note multiple value，please use `,` symbol split
Notice, only use this when envoy under Istio controlled, also in k8s env. The OAP requires the read right to k8s API server for all pods IPs.
You can use `kubectl logs ${You-OAP-Pod} | grep "K8sALSServiceMeshHTTPAnalysis"` to ensure OAP ALS k8s-mesh analysis has been active.