Flask Kubernetes上的非持久普罗米修斯度量

我正在从Kubernetes上托管的uwsgi应用程序中收集普罗米修斯度量，删除POD后这些度量不会保留。Prometheus服务器托管在同一个kubernetes集群上，我为它分配了一个持久性存储

即使删除了POD，我如何保留POD中的指标

普罗米修斯部署yaml：

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: prometheus
  namespace: default
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: prometheus
    spec:
      containers:
        - name: prometheus
          image: prom/prometheus
          args:
            - "--config.file=/etc/prometheus/prometheus.yml"
            - "--storage.tsdb.path=/prometheus/"
            - "--storage.tsdb.retention=2200h"
          ports:
            - containerPort: 9090
          volumeMounts:
            - name: prometheus-config-volume
              mountPath: /etc/prometheus/
            - name: prometheus-storage-volume
              mountPath: /prometheus/
      volumes:
        - name: prometheus-config-volume
          configMap:
            defaultMode: 420
            name: prometheus-server-conf
        - name: prometheus-storage-volume
          persistentVolumeClaim:
            claimName: azurefile
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: prometheus
  name: prometheus
spec:
  type: LoadBalancer
  loadBalancerIP: ...
  ports:
    - port: 80
      protocol: TCP
      targetPort: 9090
  selector:
    app: prometheus

apiVersion: apps/v1
kind: Deployment
metadata:
  name: api-app
spec:
  replicas: 2
  selector:
    matchLabels:
      app: api-app
  template:
    metadata:
      labels:
        app: api-app
    spec:
      containers:
      - name: nginx
        image: nginx
        lifecycle:
          preStop:
            exec:
              command: ["/usr/sbin/nginx","-s","quit"]
        ports:
          - containerPort: 80
            protocol: TCP
        resources:
          limits:
            cpu: 50m
            memory: 100Mi
          requests:
            cpu: 10m
            memory: 50Mi
        volumeMounts:
          - name: app-api
            mountPath: /var/run/app
          - name: nginx-conf
            mountPath: /etc/nginx/conf.d
      - name: api-app
        image: azurecr.io/app_api_se:opencv
        workingDir: /app
        command: ["/usr/local/bin/uwsgi"]
        args:
          - "--die-on-term"
          - "--manage-script-name"
          - "--mount=/=api:app_dispatch"
          - "--socket=/var/run/app/uwsgi.sock"
          - "--chmod-socket=777"
          - "--pyargv=se"
          - "--metrics-dir=/storage"
          - "--metrics-dir-restore"
        resources:
          requests:
            cpu: 150m
            memory: 1Gi
        volumeMounts:
          - name: app-api
            mountPath: /var/run/app
          - name: storage
            mountPath: /storage
      volumes:
        - name: app-api
          emptyDir: {}
        - name: storage  
          persistentVolumeClaim:
            claimName: app-storage
        - name: nginx-conf
          configMap:
            name: app
      tolerations:
      - key: "sku"
        operator: "Equal"
        value: "test"
        effect: "NoSchedule"
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: api-app
  name: api-app
spec:
  ports:
    - port: 80
      protocol: TCP
      targetPort: 80
  selector:
    app: api-app

应用程序部署yaml：

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: prometheus
  namespace: default
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: prometheus
    spec:
      containers:
        - name: prometheus
          image: prom/prometheus
          args:
            - "--config.file=/etc/prometheus/prometheus.yml"
            - "--storage.tsdb.path=/prometheus/"
            - "--storage.tsdb.retention=2200h"
          ports:
            - containerPort: 9090
          volumeMounts:
            - name: prometheus-config-volume
              mountPath: /etc/prometheus/
            - name: prometheus-storage-volume
              mountPath: /prometheus/
      volumes:
        - name: prometheus-config-volume
          configMap:
            defaultMode: 420
            name: prometheus-server-conf
        - name: prometheus-storage-volume
          persistentVolumeClaim:
            claimName: azurefile
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: prometheus
  name: prometheus
spec:
  type: LoadBalancer
  loadBalancerIP: ...
  ports:
    - port: 80
      protocol: TCP
      targetPort: 9090
  selector:
    app: prometheus

apiVersion: apps/v1
kind: Deployment
metadata:
  name: api-app
spec:
  replicas: 2
  selector:
    matchLabels:
      app: api-app
  template:
    metadata:
      labels:
        app: api-app
    spec:
      containers:
      - name: nginx
        image: nginx
        lifecycle:
          preStop:
            exec:
              command: ["/usr/sbin/nginx","-s","quit"]
        ports:
          - containerPort: 80
            protocol: TCP
        resources:
          limits:
            cpu: 50m
            memory: 100Mi
          requests:
            cpu: 10m
            memory: 50Mi
        volumeMounts:
          - name: app-api
            mountPath: /var/run/app
          - name: nginx-conf
            mountPath: /etc/nginx/conf.d
      - name: api-app
        image: azurecr.io/app_api_se:opencv
        workingDir: /app
        command: ["/usr/local/bin/uwsgi"]
        args:
          - "--die-on-term"
          - "--manage-script-name"
          - "--mount=/=api:app_dispatch"
          - "--socket=/var/run/app/uwsgi.sock"
          - "--chmod-socket=777"
          - "--pyargv=se"
          - "--metrics-dir=/storage"
          - "--metrics-dir-restore"
        resources:
          requests:
            cpu: 150m
            memory: 1Gi
        volumeMounts:
          - name: app-api
            mountPath: /var/run/app
          - name: storage
            mountPath: /storage
      volumes:
        - name: app-api
          emptyDir: {}
        - name: storage  
          persistentVolumeClaim:
            claimName: app-storage
        - name: nginx-conf
          configMap:
            name: app
      tolerations:
      - key: "sku"
        operator: "Equal"
        value: "test"
        effect: "NoSchedule"
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: api-app
  name: api-app
spec:
  ports:
    - port: 80
      protocol: TCP
      targetPort: 80
  selector:
    app: api-app

---

对于卷的此配置，当您释放pod时，它将被删除。您基本上是在寻找PersistentVolume

---

另外，请检查。

您的问题在于用于部署Prometheus的控制器类型错误。
在这种情况下，部署控制器的选择是错误的（它适用于无状态应用程序，不需要在POD之间维护任何持久性标识符，如重新调度持久性数据）

如果您需要在Pod（重新）调度过程中持久化数据（普罗米修斯收集的度量值），您应该切换到kind*

---

*这是普罗米修斯默认的部署方式。

如果可以，请共享

yaml

文件。您应该使用

PersistentVolumeClaim

@Vishrant我通过添加应用程序和prometheus服务器的yaml文件编辑了我的问题。我已为应用程序分配了两个卷，其中一个卷名为“storage”，这是一个持久卷，如下所示：```apiVersion:v1种类：PersistentVolumeClaim元数据：名称：alpr存储规范：accessModes:-ReadWriteMany存储类名称：api存储资源：请求：存储：100Gi```