即使在指定 VolumeClaimTemplate 之后，kube-prometheus-stack 也使用 EmptyDir 作為存儲

Question

我正在嘗試使用 helm 安裝 kube-prometheus-stack 並嘗試將持久卷與 hospath 一起使用，即使在指定 VolumeClaimTemplate 之后，創建的 emptyDir 也是存儲類型。

這些是我遵循的步驟：

1. 創建了一個 PV

kind: PersistentVolume
metadata:
  name: prometheus-pv
  labels:
    app: prometheus
spec:
  capacity:
    storage: 50Gi
  hostPath:
    path: /data/prometheus/pv4
    type: ''
  accessModes:
    - ReadWriteOnce

2. 修改存儲部分中的默認值文件：

    resources: {}
    # requests:
    #   memory: 400Mi

    ## Prometheus StorageSpec for persistent data
    ## ref: https://github.com/prometheus-operator/prometheus-operator/blob/master/Documentation/user-guides/storage.md
    ##
    storageSpec:
    ## Using PersistentVolumeClaim
    ##
    volumeClaimTemplate:
      spec:
        storageClassName: ""
        accessModes: ["ReadWriteOnce"]
        resources:
          requests:
            storage: 50Gi
      selector:
          matchLabels:
            app: prometheus

3. 使用 helm 安裝 kube-prometheus-stack

helm install  --values Prometheus.yaml promethes  prometheus-community/kube-prometheus-stack --namespace prometheusstack

4. 部署成功，但存儲創建為emptyDir pod 存儲片段

spec:
  volumes:
    - name: config
      secret:
        secretName: prometheus-promethes-kube-prometheus-prometheus
        defaultMode: 420
    - name: tls-assets
      secret:
        secretName: prometheus-promethes-kube-prometheus-prometheus-tls-assets
        defaultMode: 420
    - name: config-out
      emptyDir: {}
    - name: prometheus-promethes-kube-prometheus-prometheus-rulefiles-0
      configMap:
        name: prometheus-promethes-kube-prometheus-prometheus-rulefiles-0
        defaultMode: 420
    - name: prometheus-promethes-kube-prometheus-prometheus-db
      emptyDir: {}
    - name: promethes-kube-prometheus-prometheus-token-nwwxv
      secret:
        secretName: promethes-kube-prometheus-prometheus-token-nwwxv
        defaultMode: 420

Answer 1

你缺少身份。 正確的值應該是：

    storageSpec:
      ## Using PersistentVolumeClaim
      ##
      volumeClaimTemplate:
        spec:
          storageClassName: ""
          accessModes: ["ReadWriteOnce"]
          resources:
            requests:
              storage: 50Gi
        selector:
          matchLabels:
            app: prometheus