prometheus之五：kube-state-metrics

一、下载

1、下载文件

$ 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

2、修改service.yaml

annotations:
  prometheus.io/scraped: "true"

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

二、修改prometheus配置文件

1、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

2、prometheus重新加载配置后，查看对应的target