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Update als_setting.md (#5562)

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14
docs/en/setup/envoy/als_setting.md
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@ -1,8 +1,8 @@
# Observe service mesh through ALS
Envoy [ALS(access log service)](https://www.envoyproxy.io/docs/envoy/latest/api-v2/service/accesslog/v2/als.proto) provides
fully logs about RPC routed, including HTTP and TCP.
full logs about RPC routed, including HTTP and TCP.
If solution initialized and first implemented by [Sheng Wu](https://github.com/wu-sheng), [Hongtao Gao](https://github.com/hanahmily), [Lizan Zhou](https://github.com/lizan),
The solution is initialized and firstly implemented by [Sheng Wu](https://github.com/wu-sheng), [Hongtao Gao](https://github.com/hanahmily), [Lizan Zhou](https://github.com/lizan),
and [Dhi Aurrahman](https://github.com/dio) at 17 May. 2019,
and presented on [KubeCon China 2019](https://kccncosschn19eng.sched.com/event/NroB/observability-in-service-mesh-powered-by-envoy-and-apache-skywalking-sheng-wu-lizan-zhou-tetrate).
Here is the recorded [Video](https://www.youtube.com/watch?v=tERm39ju9ew).
@ -16,7 +16,7 @@ You need three steps to open ALS.
```
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
Note: SkyWalking OAP service is at skywalking namespace, and the port of gRPC service is 11800
2. (Default is ACTIVATED) Activate SkyWalking [envoy receiver](../backend/backend-receivers.md).
3. Active ALS k8s-mesh analysis, set system env variable `SW_ENVOY_METRIC_ALS_HTTP_ANALYSIS`=`k8s-mesh`
@ -27,14 +27,14 @@ envoy-metric:
acceptMetricsService: ${SW_ENVOY_METRIC_SERVICE:true}
alsHTTPAnalysis: ${SW_ENVOY_METRIC_ALS_HTTP_ANALYSIS:""} # Setting the system env variable would override this.
```
Note multiple value，please use `,` symbol split
For multiple values，please use `,` symbol to concatenate.
Here's an example to deploy SkyWalking by Helm chart.
```
istioctl install --set profile=demo --set meshConfig.defaultConfig.envoyAccessLogService.address=skywalking-oap.istio-system:11800 --set meshConfig.enableEnvoyAccessLogService=true
git checkout https://github.com/apache/skywalking-kubernetes.git
git clone https://github.com/apache/skywalking-kubernetes.git
cd skywalking-kubernetes/chart
helm repo add elastic https://helm.elastic.co
@ -44,6 +44,6 @@ helm dep up skywalking
helm install 8.1.0 skywalking -n istio-system --set oap.env.SW_ENVOY_METRIC_ALS_HTTP_ANALYSIS=k8s-mesh --set fullnameOverride=skywalking --set oap.envoy.als.enabled=true
```
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.
Notice, only use this when Envoy is under Istio's control, and they are in k8s environment. 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.
You can use `kubectl -n istio-system logs -l app=skywalking | grep "K8sALSServiceMeshHTTPAnalysis"` to ensure OAP ALS k8s-mesh analysis has been active.