From ee55791594e0bde0f3304284ed685e6b02989f07 Mon Sep 17 00:00:00 2001 From: rootsongjc Date: Wed, 20 Jun 2018 14:59:08 +0800 Subject: [PATCH] using vistio to visualize your istio mesh --- SUMMARY.md | 1 + manifests/vistio/vistio-mesh-only.yaml | 208 +++++++++++++++++++ practice/vistio-visualize-your-istio-mesh.md | 137 ++++++++++++ 3 files changed, 346 insertions(+) create mode 100644 manifests/vistio/vistio-mesh-only.yaml create mode 100644 practice/vistio-visualize-your-istio-mesh.md diff --git a/SUMMARY.md b/SUMMARY.md index a1c4e1f0d..9d46cf1b9 100644 --- a/SUMMARY.md +++ b/SUMMARY.md @@ -165,6 +165,7 @@ - [使用Heapster获取集群和对象的metric数据](practice/using-heapster-to-get-object-metrics.md) - [Prometheus](practice/prometheus.md) - [使用Prometheus监控kubernetes集群](practice/using-prometheus-to-monitor-kuberentes-cluster.md) + - [使用Vistio监控Istio服务网格中的流量](practice/vistio-visualize-your-istio-mesh.md) - [服务编排管理](practice/services-management-tool.md) - [使用Helm管理kubernetes应用](practice/helm.md) - [构建私有Chart仓库](practice/create-private-charts-repo.md) diff --git a/manifests/vistio/vistio-mesh-only.yaml b/manifests/vistio/vistio-mesh-only.yaml new file mode 100644 index 000000000..9812f8055 --- /dev/null +++ b/manifests/vistio/vistio-mesh-only.yaml @@ -0,0 +1,208 @@ +--- +# Source: vistio/templates/configmap.yaml +apiVersion: v1 +kind: ConfigMap +metadata: + name: vistio-api-config + labels: + heritage: Tiller + chart: "vistio-0.1.0" + app: vistio + release: vistio +data: + vistio.yaml: |- + clusterLevel: + - cluster: istio-mesh + maxVolume: 100 + serviceConnections: + - notices: + - name: HighErrorRate + severityThreshold: + error: 0.05 + warning: 0.01 + statusType: danger + title: '[{{ .value }}] High Error Rate' + prometheusURL: http://prometheus.istio-system:9090 + query: sum(rate(istio_request_count[1m])) by (source_service,destination_service,response_code) + source: + label: source_service + status: + dangerRegex: ^5..$ + label: response_code + warningRegex: ^4..$ + target: + label: destination_service + globalLevel: + clusterConnections: + - prometheusURL: http://prometheus.istio-system:9090 + query: sum(rate(istio_request_count[1m])) by (response_code) + source: + replacement: Total Mesh Requests + status: + dangerRegex: ^5..$ + label: response_code + warningRegex: ^4..$ + target: + replacement: istio-mesh + maxVolume: 100 + graphName: Vistio + +--- +# Source: vistio/templates/service.yaml +apiVersion: v1 +kind: Service +metadata: + name: vistio-api + labels: + heritage: Tiller + chart: "vistio-0.1.0" + app: vistio-api + release: vistio +spec: + type: ClusterIP + selector: + app: vistio-api + release: vistio + ports: + - name: http + port: 9091 + targetPort: 9091 + protocol: TCP +--- +apiVersion: v1 +kind: Service +metadata: + name: vistio-web + labels: + heritage: Tiller + chart: "vistio-0.1.0" + app: vistio-web + release: vistio +spec: + type: ClusterIP + selector: + app: vistio-web + release: vistio + ports: + - name: http + port: 8080 + targetPort: 8080 + protocol: TCP + +--- +# Source: vistio/templates/deployment.yaml +apiVersion: extensions/v1beta1 +kind: Deployment +metadata: + name: vistio-web + labels: + heritage: Tiller + chart: "vistio-0.1.0" + app: vistio-web + release: vistio +spec: + replicas: 1 + template: + metadata: + labels: + app: vistio-web + release: vistio + spec: + containers: + - name: vistio + image: "nmnellis/vistio-web:v0.1.0" + imagePullPolicy: Always + ports: + - containerPort: 8080 + env: + - name: UPDATE_URL + value: http://localhost:9091/graph + - name: INTERVAL + value: "1000" + - name: MAX_REPLAY_OFFSET + value: "43200" + resources: + {} + + +--- +# Source: vistio/templates/statefulset.yaml +apiVersion: apps/v1beta1 +kind: StatefulSet +metadata: + name: vistio-api + labels: + heritage: Tiller + chart: "vistio-0.1.0" + app: vistio-api + release: vistio +spec: + replicas: 1 + serviceName: vistio + template: + metadata: + labels: + app: vistio-api + release: vistio + spec: + containers: + - name: vistio-api + image: nmnellis/vistio-api:v0.1.0 + imagePullPolicy: IfNotPresent + args: + - --config.file=/etc/vistio/vistio.yaml + - --log.level=info + - --storage.path=/var/vistio/data + - --storage.retention=24h + - --cache.size=100 + - --retrieval.scrape-interval=10s + - --retrieval.scrape-timeout=8s + - --api.port=9091 + ports: + - containerPort: 9091 + livenessProbe: + httpGet: + path: / + port: 9091 + initialDelaySeconds: 30 + timeoutSeconds: 30 + readinessProbe: + httpGet: + path: / + port: 9091 + initialDelaySeconds: 30 + timeoutSeconds: 30 + resources: + {} + + volumeMounts: + - name: config + mountPath: /etc/vistio + - name: vistio-db + mountPath: /var/vistio/data + subPath: vistio-db + - name: reloader + image: nghialv2607/k8s-config-reloader:v0.1.0 + imagePullPolicy: IfNotPresent + args: + - --config.promviz-reload-url=http://localhost:9091/reload + - --config.promviz-config-dir=/etc/vistio + - --config.log-level=info + resources: + limits: + cpu: 50m + memory: 64Mi + requests: + cpu: 20m + memory: 32Mi + + volumeMounts: + - name: config + mountPath: /etc/vistio + volumes: + - name: config + configMap: + name: vistio-api-config + - name: vistio-db + emptyDir: {} + diff --git a/practice/vistio-visualize-your-istio-mesh.md b/practice/vistio-visualize-your-istio-mesh.md new file mode 100644 index 000000000..0099ecf88 --- /dev/null +++ b/practice/vistio-visualize-your-istio-mesh.md @@ -0,0 +1,137 @@ +# 使用Vistio监控Istio服务网格中的流量 + +Vistio GitHub地址: + +[Vizceral](https://github.com/Netflix/vizceral)是Netflix发布的一个开源项目,用于近乎实时地监控应用程序和集群之间的网络流量。Vistio是使用Vizceral对Istio和网格监控的改进。它利用Istio Mixer生成的指标,然后将其输入Prometheus。Vistio查询Prometheus并将数据存储在本地以允许重播流量。 + +Vizceral有两个可视化级别,全局可视化和集群级别可视化。在全局范围内(如上所示),您可以通过Istio Ingress Gateway等入口点将从Internet到Istio服务网格网络的网络流量可视化,或者您可以在Istio服务网格网络中显示总网络流量。 + +在集群级别(如下所示),您可以可视化内部网格的流量。通过设置警告和错误级别警报,当应用程序出现问题时可以被快速检测出来。 + +![Vistio的集群级别可视化](https://ws1.sinaimg.cn/large/00704eQkgy1fshft5oxlwj318g0pe0wp.jpg) + +### 在Istio服务网格中安装Vistio + +**依赖** + +- Prometheus +- Istio 0.7或更高版本 + +**假设** + +以下Demo使得这些假设更容易部署。如果您的环境设置不同,则可能需要将代码下载到本地并编辑一些文件。 + +- Prometheus部署在`istio-system` namespace下,可以通过[http://prometheus.istio-system:9090](http://prometheus.istio-system:9090/)地址访问 +- Istio mixer启用了`istio_request_count` metric +- Kubernetes集群包含有`standard` StorageClass +- 为了便于部署已安装了Helm(可选) + +**前言** + +如果您还尚未部署服务网格,可以按照此[Istio Bookinfo Demo](https://istio.io/docs/guides/bookinfo/)中的说明部署Istio及其示例应用程序。您需要能够在应用程序之间生成流量。要测试指标是否从Mixer正确发送到Prometheus,您可以运行以下Prometheus查询`istio_request_count`,应该会看到多个条目。 + +![Prometheus查询](https://ws1.sinaimg.cn/large/00704eQkgy1fshg0vw25ij318g0jzqjq.jpg) + +### 部署Vistio + +我们直接使用kubectl命令来部署。 + +**使用kubectl部署** + +```bash +kubectl apply -f https://raw.githubusercontent.com/rootsongjc/kubernetes-handbook/master/manifests/vistio/vistio-mesh-only.yaml -n default +``` + +### 验证和暴露Vistio Web/API + +验证应用程序已经启动并在运行。使用`kubectl port-forward`命令暴露应用程序。 + +**验证vistio-api** + +```bash +kubectl describe statefulset vistio-api -n default +``` + +**日志检查(可选的)** + +您应该能够从vistio-api的日志中查看是否存在与Prometheus的连接/查询相关的错误。 + +```bash +kubectl logs -n default -c vistio-api $(kubectl -n default get pod -l app=vistio-api -o jsonpath='{.items[0].metadata.name}') +``` + +**验证vistio-web** + +```bash +kubectl describe deployment vistio-web -n default +``` + +**暴露vistio-api** + +我们使用`kubectl port-forward`将vistio-api暴露到[http://localhost:9191](http://localhost:9191/)。 + +```bash +kubectl -n default port-forward $(kubectl -n default get pod -l app=vistio-api -o jsonpath='{.items[0].metadata.name}') 9091:9091 & +``` + +**验证visito-api** + +vistio-web调用vistio-api来渲染服务网格。访问您应该会看到类似下列的输出。 + +![vistio-api的期望输出](https://ws1.sinaimg.cn/large/00704eQkgy1fshi61t04oj310q17c0y1.jpg) + +**暴露Vistio** + +在另一个命令行终端中,暴露Vizcera UI到[http://localhost:8080](http://localhost:8080/)。 + +```bash +kubectl -n default port-forward $(kubectl -n default get pod -l app=vistio-web -o jsonpath='{.items[0].metadata.name}') 8080:8080 & +``` + +**访问Vistio** + +如果一切都已经启动并准备就绪,您就可以访问Vistio UI,开始探索服务网格网络,访问[http://localhost:8080](http://localhost:8080/)您将会看到类似下图的输出。 + +![Vistio主页面](https://ws1.sinaimg.cn/large/00704eQkgy1fshi98duzgj318g0l2406.jpg) + +### 探索 + +在全局范围内,您将看到Istio网格内所有请求的总和。如果您部署了istio-ingressgateway,则可以选择显示通过其他配置从网格外部接收的流量,参考[使用Ingress Gateway部署Vistio](https://github.com/nmnellis/vistio#deploy-vistio-with-istio-ingress-gateway-helm)。 + +如果您点击istio-mesh气泡,您将能够查看您的网状网络。 + +![istio mesh的网络流量](https://ws1.sinaimg.cn/large/00704eQkgy1fshibdwcj3j318g0p8th1.jpg) + +在您的Istio网格中,您可以使用许多可视化工具来帮助您查明故障的应用程序。 + +![查明网络问题](https://ws1.sinaimg.cn/large/00704eQkgy1fshicc7or1j318g0p8ahr.jpg) + +使用屏幕右上方的过滤器可以快速过滤出错误率较高的应用程序。通过高级配置,当错误率超过特定值时,也可以触发警报。警报将显示给定应用程序的当前错误率趋势。 + +### 问题排查 + +访问,如果您从vistio-api中看到以下输出,表示某些功能无法正常工作。正确的输出显示在教程上面。 + +![vistio api的不正确输出](https://ws1.sinaimg.cn/large/00704eQkgy1fshie7wxkyj30ks0f4myd.jpg) + +**1.** 检查vistio-api日志中是否有错误——在大多数情况下,vistio-api将记录与Prometheus通信时遇到的任何问题。 + +```bash +kubectl logs -n default -c vistio-api $(kubectl -n default get pod -l app=vistio-api -o jsonpath='{.items[0].metadata.name}') +``` + +**2.** 验证Prometheus查询——vistio-api使用以下查询检索其数据。您应该确保Prometheus内部的数据都存在。 + +```bash +# Global Level Query +sum(rate(istio_request_count[1m])) by (response_code) +# Cluster Level Query +sum(rate(istio_request_count[1m])) by (source_service,destination_service,response_code) +``` + +**3.** 提交Issue——如果遇到问题无法解决请提交Issue: + +## 参考 + +- https://github.com/nmnellis/vistio +- [Vistio—使用Netflix的Vizceral可视化Istio service mesh](https://servicemesher.github.io/blog/vistio-visualize-your-istio-mesh-using-netflixs-vizceral/) \ No newline at end of file