prometheus（九）收集kube-state-metrics指标信息

佚名 4年前 (2020-03-30) Cloud 2105人围观抢沙发百度已收录

安装kube-state-metrics

下载

$ cd /opt/k8s/work/
$ wget -O kube-state-metrics.zip  https://github.com/kubernetes/kube-state-metrics/archive/master.zip
$ unzip kube-state-metrics.tar.gz
$ cd kube-state-metrics-master/examples/standard
$ ls
cluster-role-binding.yaml  cluster-role.yaml  deployment.yaml  service-account.yaml  service.yaml

修改namespace
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将默认的namespace从kube-system修改成monitoring
```
$ cd /opt/k8s/work/kube-state-metrics-master/examples/standard
$ ls | xargs -I {} sed -i "s/namespace: kube-system/namespace: monitoring/g" {}
```

在service.yaml追加如下annotation

annotations:
  prometheus.io/scraped: "true"

修改后的server.yml文件

cat service.yaml
 apiVersion: v1
 kind: Service
 metadata:
   annotations:
     prometheus.io/scraped: "true"
   labels:
     app.kubernetes.io/name: kube-state-metrics
     app.kubernetes.io/version: 1.9.5
   name: kube-state-metrics
   namespace: monitoring
 spec:
   clusterIP: None
   ports:
   - name: http-metrics
     port: 8080
     targetPort: http-metrics
   - name: telemetry
     port: 8081
     targetPort: telemetry
   selector:
     app.kubernetes.io/name: kube-state-metrics

启动服务

$ cd /opt/k8s/work/kube-state-metrics-master/examples/standard
$ kubectl create -f .

prometheus 收集指标

prometheus 追加配置，仅抓取带有prometheus.io/scraped: "true" 注解的endpoint

- job_name: "kubernetes-service-endpoints"
  kubernetes_sd_configs:
  - role: endpoints
  relabel_configs:
  - source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scraped]
    action: keep
    regex: true
  - action: labelmap
    regex: __meta_kubernetes_service_label_(.+)
  - source_labels: [__meta_kubernetes_namespace]
    action: replace
    target_label: kubernetes_namespace
  - source_labels: [__meta_kubernetes_service_name]
    action: replace
    target_label: service_name