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本文介紹如何通過(guò)ARMS Go探針和ASM對(duì)Go應(yīng)用進(jìn)行全鏈路灰度并實(shí)時(shí)監(jiān)控。

Demo應(yīng)用

Demo應(yīng)用部署架構(gòu)：

Demo應(yīng)用YAML：

說(shuō)明

所有應(yīng)用均部署在go-gray命名空間下。

入口應(yīng)用

apiVersion: apps/v1
kind: Deployment
metadata:
  name: requestsender
  namespace: go-gray
spec:
  replicas: 1
  selector:
    matchLabels:
      app: requestsender
  template:
    metadata:
      labels:
        app: requestsender
        ASM_TRAFFIC_TAG: v1
        version: v1
        armsPilotCreateAppName: requestsender
        armsPilotAutoEnable: 'on'
        aliyun.com/app-language: golang
    spec:
      containers:
        - name: requestsender
          image: registry.cn-hangzhou.aliyuncs.com/private-mesh/hellob:requestsender-demo
          imagePullPolicy: Always
          ports:
            - containerPort: 8080

---
apiVersion: v1
kind: Service
metadata:
  name: requestsender
  namespace: go-gray
spec:
  selector:
    app: requestsender
  ports:
    - protocol: TCP
      port: 80
      targetPort: 8080
  type: ClusterIP

應(yīng)用A

apiVersion: apps/v1
kind: Deployment
metadata:
  name: go-demo-a-base
  namespace: go-gray
spec:
  replicas: 1
  selector:
    matchLabels:
      app: go-demo-a
  template:
    metadata:
      labels:
        app: go-demo-a
        armsPilotAutoEnable: "on"
        ASM_TRAFFIC_TAG: v1
        version: v1
        armsPilotCreateAppName: "go-demo-a"
        aliyun.com/app-language: golang
    spec:
      containers:
        - name: go-demo-a
          image: registry.cn-hangzhou.aliyuncs.com/private-mesh/hellob:a-demo
          imagePullPolicy: Always
          ports:
            - containerPort: 8080
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: go-demo-a-gray
  namespace: go-gray
spec:
  replicas: 1
  selector:
    matchLabels:
      app: go-demo-a
  template:
    metadata:
      labels:
        app: go-demo-a
        ASM_TRAFFIC_TAG: v2
        version: v2
        armsPilotCreateAppName: go-demo-a
        armsPilotAutoEnable: 'on'
        aliyun.com/app-language: golang
    spec:
      containers:
        - name: go-demo-a-base
          image: registry.cn-hangzhou.aliyuncs.com/private-mesh/hellob:a-demo-gray
          imagePullPolicy: Always
          ports:
            - containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
  name: go-demo-a
  namespace: go-gray
spec:
  selector:
    app: go-demo-a
  ports:
    - protocol: TCP
      port: 80
      targetPort: 8080
  type: ClusterIP

應(yīng)用B

apiVersion: apps/v1
kind: Deployment
metadata:
  name: go-demo-b-base
  namespace: go-gray
spec:
  replicas: 1
  selector:
    matchLabels:
      app: go-demo-b
  template:
    metadata:
      labels:
        app: go-demo-b
        ASM_TRAFFIC_TAG: v1
        version: v1
        armsPilotCreateAppName: go-demo-b
        armsPilotAutoEnable: 'on'
        aliyun.com/app-language: golang
    spec:
      containers:
        - name: go-demo-b
          image: registry.cn-hangzhou.aliyuncs.com/private-mesh/hellob:b-demo
          imagePullPolicy: Always
          ports:
            - containerPort: 8080
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: go-demo-b-gray
  namespace: go-gray
spec:
  replicas: 1
  selector:
    matchLabels:
      app: go-demo-b
  template:
    metadata:
      labels:
        app: go-demo-b
        ASM_TRAFFIC_TAG: v2
        version: v2
        armsPilotCreateAppName: go-demo-b
        armsPilotAutoEnable: 'on'
        aliyun.com/app-language: golang
    spec:
      containers:
        - name: go-demo-b
          image: registry.cn-hangzhou.aliyuncs.com/private-mesh/hellob:b-demo-gray
          imagePullPolicy: Always
          ports:
            - containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
  name: go-demo-b
  namespace: go-gray
spec:
  selector:
    app: go-demo-b
  ports:
    - protocol: TCP
      port: 80
      targetPort: 8080
  type: ClusterIP

應(yīng)用C

apiVersion: apps/v1
kind: Deployment
metadata:
  name: go-demo-c-base
  namespace: go-gray
spec:
  replicas: 1
  selector:
    matchLabels:
      app: go-demo-c
  template:
    metadata:
      labels:
        app: go-demo-c
        ASM_TRAFFIC_TAG: v1
        version: v1
        armsPilotCreateAppName: go-demo-c
        armsPilotAutoEnable: 'on'
        aliyun.com/app-language: golang
    spec:
      containers:
        - name: go-demo-c
          image: registry.cn-hangzhou.aliyuncs.com/private-mesh/hellob:c-demo
          imagePullPolicy: Always
          ports:
            - containerPort: 8080
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: go-demo-c-gray
  namespace: go-gray
spec:
  replicas: 1
  selector:
    matchLabels:
      app: go-demo-c
  template:
    metadata:
      labels:
        app: go-demo-c
        ASM_TRAFFIC_TAG: v2
        version: v2
        armsPilotCreateAppName: go-demo-c
        armsPilotAutoEnable: 'on'
        aliyun.com/app-language: golang
    spec:
      containers:
        - name: go-demo-c
          image: registry.cn-hangzhou.aliyuncs.com/private-mesh/hellob:c-demo-gray
          imagePullPolicy: Always
          ports:
            - containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
  name: go-demo-c
  namespace: go-gray
spec:
  selector:
    app: go-demo-c
  ports:
    - protocol: TCP
      port: 80
      targetPort: 8080
  type: ClusterIP

使用ARMS監(jiān)控Golang應(yīng)用

通過(guò)Golang探針將Go應(yīng)用接入ARMS應(yīng)用監(jiān)控，即可在ARMS中查看對(duì)應(yīng)應(yīng)用的應(yīng)用拓?fù)洹⒔涌谡{(diào)用、數(shù)據(jù)庫(kù)分析等相關(guān)監(jiān)控?cái)?shù)據(jù)。

容器環(huán)境：容器服務(wù)ACK通過(guò)ack-onepilot組件安裝Go探針
自建集群：通用Kubernetes環(huán)境自動(dòng)安裝Golang探針

使用ASM進(jìn)行全鏈路灰度

創(chuàng)建ASM實(shí)例并添加集群。
創(chuàng)建入口網(wǎng)關(guān)。
使用以下內(nèi)容創(chuàng)建命名空間為istio-system的ingressgateway網(wǎng)關(guān)規(guī)則。具體操作，請(qǐng)參見(jiàn)創(chuàng)建ingressgateway網(wǎng)關(guān)規(guī)則。
展開(kāi)查看網(wǎng)關(guān)規(guī)則YAML示例
```
apiVersion: networking.istio.io/v1beta1
kind: Gateway
metadata:
  name: ingressgateway
  namespace: istio-system
spec:
  selector:
    istio: ingressgateway
  servers:
    - port:
        number: 80
        name: http
        protocol: HTTP
      hosts:
        - '*'
```
給Demo的所有應(yīng)用注入Sidecar并重啟。具體操作，請(qǐng)參見(jiàn)安裝Sidecar代理。
配置鏈路追蹤。
1. 創(chuàng)建opentelemetry-operator-system命名空間。
```
kubectl create namespace opentelemetry-operator-system
```
2. 創(chuàng)建鏈路追蹤的Service。
```
apiVersion: v1
kind: Service
metadata:
  name: default-collector
  namespace: opentelemetry-operator-system
spec:
  ports:
    - port: 4317
      protocol: TCP
      targetPort: 4317
  selector:
    app: default-collector
  sessionAffinity: None
  type: ClusterIP
```
3. 在ASM控制臺(tái)開(kāi)啟鏈路追蹤。
  - OpenTelemetry服務(wù)域名（完整FQDN）：default-collector.opentelemetry-operator-system.svc.cluster.local
  - OpenTelemetry服務(wù)端口：4317
4. 在可觀測(cè)配置頁(yè)面的鏈路追蹤設(shè)置區(qū)域，啟用鏈路追蹤，并按需配置采樣率。

創(chuàng)建泳道。

創(chuàng)建泳道組test。
配置項(xiàng)
說(shuō)明
trace id請(qǐng)求頭
traceparent
引流請(qǐng)求頭
x-asm-prefer-tag
泳道服務(wù)
requestsender、go-demo-a、go-demo-b、go-demo-c

創(chuàng)建v1和v2泳道。

配置項(xiàng)	說(shuō)明
泳道名稱	分別配置為v1、v2
配置服務(wù)標(biāo)簽	標(biāo)簽名稱：選擇ASM_TRAFFIC_TAG 標(biāo)簽值：分別選擇v1、v2
添加服務(wù)	v1泳道：選擇requestsender、go-demo-a、go-demo-b、go-demo-c v2泳道：選擇go-demo-a、go-demo-c

分別為v1和v2泳道添加引流規(guī)則。
配置項(xiàng)
說(shuō)明
入口服務(wù)
選擇requestsender.go-gray.svc.cluster.local
引流規(guī)則
名稱：分別輸入v1、v2
域名：*
匹配方式：精確
匹配內(nèi)容：/greetinit
創(chuàng)建完成示例：

驗(yàn)證結(jié)果

在ASM網(wǎng)關(guān) > 入口網(wǎng)關(guān)頁(yè)面獲取ASM網(wǎng)關(guān)的公網(wǎng)IP。
執(zhí)行以下命令，設(shè)置環(huán)境變量。
xxx.xxx.xxx.xxx為上一步獲取的IP。
```
export ASM_GATEWAY_IP=xxx.xxx.xxx.xxx
```

驗(yàn)證全鏈路灰度功能是否生效。

基線：

for i in {1..100};  do curl   -H 'x-asm-prefer-tag: v1' http://${ASM_GATEWAY_IP}/greetinit;  echo ''; sleep 1; done;

預(yù)期輸出：

{"code":0,"data":{"greeting":"Hello ","callChain":"Init:base:172.30.208.29 - A:base:172.30.208.114 - B:base:172.30.208.116 - C:base:172.30.208.120"},"message":"success"}
{"code":0,"data":{"greeting":"Hello ","callChain":"Init:base:172.30.208.29 - A:base:172.30.208.114 - B:base:172.30.208.116 - C:base:172.30.208.120"},"message":"success"}

灰度：

for i in {1..100};  do curl   -H 'x-asm-prefer-tag: v2' http://${ASM_GATEWAY_IP}/greetinit;  echo ''; sleep 1; done;

預(yù)期輸出：

{"code":0,"data":{"greeting":"Hello ","callChain":"Init:base:172.30.208.29 - A:gray:172.30.208.115 - B:base:172.30.208.116 - C:gray:172.30.208.122"},"message":"success"}
{"code":0,"data":{"greeting":"Hello ","callChain":"Init:base:172.30.208.29 - A:gray:172.30.208.115 - B:base:172.30.208.116 - C:gray:172.30.208.122"},"message":"success"}

查看監(jiān)控?cái)?shù)據(jù)

在ARMS控制臺(tái)的應(yīng)用監(jiān)控 > 應(yīng)用列表頁(yè)面查看對(duì)應(yīng)的Go應(yīng)用監(jiān)控。

配置項(xiàng)	說(shuō)明
trace id請(qǐng)求頭	traceparent
引流請(qǐng)求頭	x-asm-prefer-tag
泳道服務(wù)	requestsender、go-demo-a、go-demo-b、go-demo-c

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Demo應(yīng)用

使用ARMS監(jiān)控Golang應(yīng)用

使用ASM進(jìn)行全鏈路灰度

驗(yàn)證結(jié)果

查看監(jiān)控?cái)?shù)據(jù)