结合Prometheus指标进行analysis

sum(irate(istio_requests_total{reporter="source",destination_service=~"{{spring-boot-helloworld}}",response_code!~"5.*"}[1m])) / 
sum(irate(istio_requests_total{reporter="source",destination_service=~"{{spring-boot-helloworld}}"}[1m]))

[root@master 08-argo-rollouts]# kubectl apply -f 03-argo-rollouts-with-analysis.yaml 
[root@master 08-argo-rollouts]# cat 03-argo-rollouts-with-analysis.yaml 
# CopyRight: MageEdu <http://www.magedu.com>
---
apiVersion: argoproj.io/v1alpha1
kind: AnalysisTemplate
metadata:
  name: success-rate
spec:
  args:
  - name: service-name
  metrics:
  - name: success-rate
    # NOTE: prometheus queries return results in the form of a vector.
    # So it is common to access the index 0 of the returned array to obtain the value
    successCondition: result[0] >= 0.95
    interval: 20s 
    #count: 3
    failureLimit: 3
    provider:
      prometheus:
        address: http://prometheus.istio-system.svc.cluster.local:9090
        query: |
          sum(irate(
            istio_requests_total{reporter="source",destination_service=~"{{args.service-name}}",response_code!~"5.*"}[1m]
          )) / 
          sum(irate(
            istio_requests_total{reporter="source",destination_service=~"{{args.service-name}}"}[1m]
          ))
---
apiVersion: argoproj.io/v1alpha1
kind: Rollout
metadata:
  name: rollouts-helloworld-with-analysis
spec:
  replicas: 10 
  strategy:
    canary:
      trafficRouting:
        istio:
          virtualService: 
            name: helloworld-rollout-vsvc
            routes:
            - primary
          destinationRule:
            name: helloworld-rollout-destrule
            canarySubsetName: canary
            stableSubsetName: stable
      analysis:
        templates:
        - templateName: success-rate
        args:
        - name: service-name
          # change this value to your service name
          value: spring-boot-helloworld.demo.svc.cluster.local
        startingStep: 2
      steps:
      - setWeight: 5
      - pause: {duration: 1m}
      - setWeight: 10
      - pause: {duration: 1m}
      - setWeight: 30
      - pause: {duration: 1m}
      - setWeight: 60
      - pause: {duration: 1m}
  revisionHistoryLimit: 5
  selector:
    matchLabels:
      app: spring-boot-helloworld
  template:
    metadata:
      labels:
        app: spring-boot-helloworld
    spec:
      containers:
      - name: spring-boot-helloworld
        image: ikubernetes/spring-boot-helloworld:v0.9.5
        ports:
        - name: http
          containerPort: 80
          protocol: TCP
        resources:
          requests:
            memory: 32Mi
            cpu: 50m
        livenessProbe:
          httpGet:
            path: '/'
            port: 80
            scheme: HTTP
        readinessProbe:
          httpGet:
            path: '/'
            port: 80
            scheme: HTTP
          initialDelaySeconds: 5
---
apiVersion: v1
kind: Service
metadata:
  name: spring-boot-helloworld
spec:
  ports:
  - port: 80
    targetPort: http
    protocol: TCP
    name: http
  selector:
    app: spring-boot-helloworld
---
apiVersion: networking.istio.io/v1beta1
kind: VirtualService
metadata:
  name: helloworld-rollout-vsvc
spec:
  #gateways:
  #- istio-rollout-gateway
  hosts:
  - spring-boot-helloworld
  http:
  - name: primary
    route:
    - destination:
        host: spring-boot-helloworld
        subset: stable
      weight: 100
    - destination:
        host: spring-boot-helloworld
        subset: canary
      weight: 0
---
apiVersion: networking.istio.io/v1beta1
kind: DestinationRule
metadata:
  name: helloworld-rollout-destrule
spec:
  host: spring-boot-helloworld
  subsets:
  - name: canary
    labels:
      app: spring-boot-helloworld
  - name: stable
    labels:
      app: spring-boot-helloworld
---

查看vs

[root@master 08-argo-rollouts]# kubectl get vs
NAME                      GATEWAYS   HOSTS                        AGE
helloworld-rollout-vsvc              ["spring-boot-helloworld"]   15m
[root@master 08-argo-rollouts]# kubectl get vs -o yaml -w

 修改03-argo-rollouts-with-analysis.yaml的image为0.9.3

[root@master 08-argo-rollouts]# vim 03-argo-rollouts-with-analysis.yaml 

分析成功就继续，分析失败就回滚

[root@master 08-argo-rollouts]# cat 04-argo-rollouts-with-analysis.yaml 
# CopyRight: MageEdu <http://www.magedu.com>
---
apiVersion: argoproj.io/v1alpha1
kind: AnalysisTemplate
metadata:
  name: success-rate
spec:
  args:
  - name: service-name
  metrics:
  - name: success-rate
    # NOTE: prometheus queries return results in the form of a vector.
    # So it is common to access the index 0 of the returned array to obtain the value
    successCondition: result[0] >= 0.95
    interval: 20s 
    count: 3
    failureLimit: 3
    provider:
      prometheus:
        address: http://prometheus.istio-system.svc.cluster.local:9090
        query: |
          sum(irate(
            istio_requests_total{reporter="source",destination_service=~"{{args.service-name}}",response_code!~"5.*"}[1m]
          )) / 
          sum(irate(
            istio_requests_total{reporter="source",destination_service=~"{{args.service-name}}"}[1m]
          ))
---
apiVersion: argoproj.io/v1alpha1
kind: Rollout
metadata:
  name: rollouts-helloworld-with-analysis
spec:
  replicas: 10 
  strategy:
    canary:
      trafficRouting:
        istio:
          virtualService: 
            name: helloworld-rollout-vsvc
            routes:
            - primary
          destinationRule:
            name: helloworld-rollout-destrule
            canarySubsetName: canary
            stableSubsetName: stable
      steps:
      - setWeight: 5
      - pause: {duration: 2m}
      - analysis:
          templates:
          - templateName: success-rate
          args:
          - name: service-name
            value: spring-boot-helloworld.demo.svc.cluster.local
      - setWeight: 10
      - pause: {duration: 1m}
      - setWeight: 30
      - pause: {duration: 1m}
      - setWeight: 60
      - pause: {duration: 1m}
  revisionHistoryLimit: 5
  selector:
    matchLabels:
      app: spring-boot-helloworld
  template:
    metadata:
      labels:
        app: spring-boot-helloworld
    spec:
      containers:
      - name: spring-boot-helloworld
        image: ikubernetes/spring-boot-helloworld:v0.9.5
        ports:
        - name: http
          containerPort: 80
          protocol: TCP
        resources:
          requests:
            memory: 32Mi
            cpu: 50m
        livenessProbe:
          httpGet:
            path: '/'
            port: 80
            scheme: HTTP
        readinessProbe:
          httpGet:
            path: '/'
            port: 80
            scheme: HTTP
          initialDelaySeconds: 5
---
apiVersion: v1
kind: Service
metadata:
  name: spring-boot-helloworld
spec:
  ports:
  - port: 80
    targetPort: http
    protocol: TCP
    name: http
  selector:
    app: spring-boot-helloworld
---
apiVersion: networking.istio.io/v1beta1
kind: VirtualService
metadata:
  name: helloworld-rollout-vsvc
spec:
  #gateways:
  #- istio-rollout-gateway
  hosts:
  - spring-boot-helloworld
  http:
  - name: primary
    route:
    - destination:
        host: spring-boot-helloworld
        subset: stable
      weight: 100
    - destination:
        host: spring-boot-helloworld
        subset: canary
      weight: 0
---
apiVersion: networking.istio.io/v1beta1
kind: DestinationRule
metadata:
  name: helloworld-rollout-destrule
spec:
  host: spring-boot-helloworld
  subsets:
  - name: canary
    labels:
      app: spring-boot-helloworld
  - name: stable
    labels:
      app: spring-boot-helloworld
---

03 是在第二步启动基于对过去一分钟的数据进行分析

04 是把analysis定义成一个步骤只执行一次