前言

在前面的文章优雅的使用Prometheus Operator中我们搭建好了基础的监控平台和图表. 现在我们可以将etcd也纳入监控范围内了。

监控ETCD

etcd.service.yaml

由于我们的etcd是自行跑在kubernetes外部的，想要监控到，我们需要手动的创建Endpoints以及Service。在下面的Endpoints中我们填写上我们的etcd的ip地址

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#etcd.service.yaml
apiVersion: v1
kind: Service
metadata:
  name: etcd-k8s
  namespace: kube-system
  labels:
    k8s-app: etcd
spec:
  type: ClusterIP
  clusterIP: None
  ports:
    - name: port
      port: 2379
      protocol: TCP
---
apiVersion: v1
kind: Endpoints
metadata:
  name: etcd-k8s
  namespace: kube-system
  labels:
    k8s-app: etcd
subsets:
  - addresses:
      - ip: 192.168.0.1
        nodeName: etc-master1
      - ip: 192.168.1.1
        nodeName: etc-master2
      - ip: 192.168.2.1
        nodeName: etc-master3
    ports:
      - name: port
        port: 2379
        protocol: TCP

创建endpoint和service

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kubectl apply -f etcd.service.yaml

查看endpoints

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$ kubectl get ep -nkube-system | grep etcd
etcd-k8s                                       192.168.0.1:2379,192.168.1.1:2379,192.168.2.1:2379                       21h

查看service

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$ kubectl get -nkube-system svc | grep etcd
etcd-k8s                                       ClusterIP   None            <none>        2379/TCP                 21h

etcd.monitoring.yaml

编写监控的yaml

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---
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: etcd-k8s
  namespace: monitoring
  labels:
    k8s-app: etcd-k8s
spec:
  jobLabel: k8s-app
  endpoints:
    - port: port
      interval: 15s
      scheme: http
  selector:
    matchLabels:
      k8s-app: etcd
  namespaceSelector:
    matchNames:
      - kube-system

部署监控

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kubectl apply -f etcd.monitoring.yaml

查看

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$ kubectl get ServiceMonitor -nmonitoring | grep etcd
etcd-k8s                  21h
  • 查看promethus上的情况
  • 然后配置grafana的仪表盘，选择import填入id10322，然后load即可，然后选择ETCD的dashboard。