kube-prometheus监控Nacos集群

nacos配置

nacos默认是没有开启指标，需要修改application.properties配置文件，暴露metrics数据

management.endpoints.web.exposure.include=*

重启服务，可成功访问返回数据则是正常。

kube-prometheus配置

方法一：使用ServiceMonitor

集群内使用,推荐此方法。

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  labels:
    app: nacos-sm
  name: nacos-sm
  namespace: monitoring
spec:
  endpoints:
    - port: server
      interval: 30s
      path: /nacos/actuator/prometheus
  namespaceSelector:
    any: true
  selector:
    matchLabels:
      name: nacos-svc
      app: nacos

方法二：使用prometheus-additional.yaml

编辑prometheus-additional.yaml，添加

- job_name: 'nacos-cluster'
  scrape_interval: 60s
  metrics_path: '/nacos/actuator/prometheus'
  static_configs:
    - targets: ['nacos-svc.nacos.svc.cluster.local:8848']
      labels:
        instance: nacos

执行命令更新配置

kubectl delete secret additional-configs -n monitoring >/dev/null 2>&1
kubectl create secret generic additional-configs --from-file=prometheus-additional.yaml -n monitoring

检查prometheus配置是否正常

kubectl exec -it prometheus-k8s-1 -n monitoring -- promtool check config /etc/prometheus/config_out/prometheus.env.yaml

重启kube-prometheus

curl -XPOST `kubectl get svc -n monitoring prometheus-k8s|grep -v NAME |awk '{print $3}'`:9090/-/reload

grafana配置nacos监控图表

图表地址参考：https://grafana.com/grafana/dashboards/13221-nacos/

告警规则

参考官网指标参数：https://nacos.io/zh-cn/docs/monitor-guide.html