kubernetes1.18.8 安装kube-prometheus

kube-prometheus 是一整套监控解决方案，它使用 Prometheus 采集集群指标，Grafana 做展示，包含如下组件：

• The Prometheus Operator
• Highly available Prometheus
• Highly available Alertmanager
• Prometheus node-exporter
• Prometheus Adapter for Kubernetes Metrics APIs （k8s-prometheus-adapter）
• kube-state-metrics
• Grafana

其中 k8s-prometheus-adapter使用 Prometheus 实现了 metrics.k8s.io和 custom.metrics.k8s.io API，所以不需要再部署 metrics-server。

#下载

https://github.com/prometheus-operator/kube-prometheus.git

#修改service类型为NodePort

prometheus service

$ cat prometheus-service.yaml
apiVersion: v1
kind: Service
metadata:
  labels:
    prometheus: k8s
  name: prometheus-k8s
  namespace: monitoring
spec:
  type: NodePort
  ports:
  - name: web
    port: 9090
    targetPort: web
    nodePort: 30090
  selector:
    app: prometheus
    prometheus: k8s
  sessionAffinity: ClientIP

alertmanager service

$ cat alertmanager-service.yaml 
apiVersion: v1
kind: Service
metadata:
  labels:
    alertmanager: main
  name: alertmanager-main
  namespace: monitoring
spec:
  type: NodePort
  ports:
  - name: web
    port: 9093
    targetPort: web
    nodePort: 30093
  selector:
    alertmanager: main
    app: alertmanager
  sessionAffinity: ClientIP

grafana service

$ cat grafana-service.yaml
apiVersion: v1
kind: Service
metadata:
  labels:
    app: grafana
  name: grafana
  namespace: monitoring
spec:
  type: NodePort
  ports:
  - name: http
    port: 3000
    targetPort: http
    nodePort: 32000
  selector:
    app: grafana

#安装

cd kube-prometheus/
kubectl apply -f manifests/setup # 安装 prometheus-operator
kubectl apply -f manifests/      # 安装 promethes metric adapter

#访问地址

http://NodeIP:32000/           # grafana
http://NodeIP:30090/           # prometheus
http://NodeIP:30093/           # alertmanager 

#相关文档

https://blog.csdn.net/guoxiaobo2010/article/details/106532357/
https://k8s-install.opsnull.com/08-4.kube-prometheus%E6%8F%92%E4%BB%B6.html
https://github.com/prometheus-operator/kube-prometheus