Prometheus监控神器-Kubernetes篇（九）

icegoblin

发布于 2022-7-4 17:02

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创建Prometheus联邦的statefulse文件

cat prometheus-federate-statefulset.yaml
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: prometheus-federate
  namespace: kube-system
  labels:
    k8s-app: prometheus-federate
    kubernetes.io/cluster-service: "true"
spec:
  serviceName: "prometheus-federate"
  podManagementPolicy: "Parallel"
  replicas: 1
  selector:
    matchLabels:
      k8s-app: prometheus-federate
  template:
    metadata:
      labels:
        k8s-app: prometheus-federate
      annotations:
        scheduler.alpha.kubernetes.io/critical-pod: ''
    spec:
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
          - labelSelector:
              matchExpressions:
              - key: k8s-app
                operator: In
                values:
                - prometheus-federate
            topologyKey: "kubernetes.io/hostname"
      priorityClassName: system-cluster-critical
      hostNetwork: true
      dnsPolicy: ClusterFirstWithHostNet
      containers:
      - name: prometheus-federate-configmap-reload
        image: "jimmidyson/configmap-reload:v0.4.0"
        imagePullPolicy: "IfNotPresent"
        args:
          - --volume-dir=/etc/config
          - --webhook-url=http://localhost:9091/-/reload
        volumeMounts:
          - name: config-volume
            mountPath: /etc/config
            readOnly: true
        resources:
          limits:
            cpu: 10m
            memory: 10Mi
          requests:
            cpu: 10m
            memory: 10Mi
        securityContext:
            runAsUser: 0
            privileged: true
      - image: prom/prometheus:v2.20.0
        imagePullPolicy: IfNotPresent
        name: prometheus
        command:
          - "/bin/prometheus"
        args:
          - "--web.listen-address=0.0.0.0:9091"
          - "--config.file=/etc/prometheus/prometheus.yml"
          - "--storage.tsdb.path=/prometheus"
          - "--storage.tsdb.retention=24h"
          - "--web.console.libraries=/etc/prometheus/console_libraries"
          - "--web.console.templates=/etc/prometheus/consoles"
          - "--web.enable-lifecycle"
        ports:
          - containerPort: 9091
            protocol: TCP
        volumeMounts:
          - mountPath: "/prometheus"
            name: prometheus-federate-data
          - mountPath: "/etc/prometheus"
            name: config-volume
        readinessProbe:
          httpGet:
            path: /-/ready
            port: 9091
          initialDelaySeconds: 30
          timeoutSeconds: 30
        livenessProbe:
          httpGet:
            path: /-/healthy
            port: 9091
          initialDelaySeconds: 30
          timeoutSeconds: 30
        resources:
          requests:
            cpu: 100m
            memory: 100Mi
          limits:
            cpu: 1000m
            memory: 2500Mi
        securityContext:
            runAsUser: 0
            privileged: true
      serviceAccountName: prometheus
      volumes:
        - name: config-volume
          configMap:
            name: prometheus-federate-config
  volumeClaimTemplates:
    - metadata:
        name: prometheus-federate-data
      spec:
        accessModes: [ "ReadWriteOnce" ]
        storageClassName: "prometheus-federate-lpv"
        resources:
          requests:
            storage: 5Gi

创建Prometheus联邦的svc文件

cat prometheus-service-statefulset.yaml
apiVersion: v1
kind: Service
metadata:
  name: prometheus
  namespace: kube-system
spec:
  ports:
    - name: prometheus
      port: 9090
      targetPort: 9090
  selector:
    k8s-app: prometheus
  clusterIP: None

部署

cd /data/manual-deploy/prometheus/
prometheus-federate-configmap.yaml
prometheus-federate-pv.yaml
prometheus-federate-service-statefulset.yaml
prometheus-federate-statefulset.yaml
prometheus-federate-storageclass.yaml
kubectl apply -f prometheus-federate-storageclass.yaml
kubectl apply -f prometheus-federate-pv.yaml
kubectl apply -f prometheus-federate-configmap.yaml
kubectl apply -f prometheus-federate-statefulset.yaml
kubectl apply -f prometheus-federate-service-statefulset.yaml

验证

# pv
kubectl -n kube-system get pvc |grep federate
prometheus-federate-data-prometheus-federate-0   Bound    prometheus-federate-lpv-0   10Gi RWO   prometheus-federate-lpv 4h
kubectl -n kube-system get pod |grep federate
prometheus-federate-0                      2/2     Running   0          2d4h

对此，联邦的配置就完成了，可以在浏览器中访问192.168.1.151:9091查看相应的targets信息，以及配置的rules规则，触发下警报，看看Alertmanager集群已经部署成功了。

Prometheus监控神器-Kubernetes篇（九）-鸿蒙开发者社区