我有一个K8s 1.7集群，使用vSphere作为持久存储提供商。我还部署了Prometheus、node_exporter和kube状态度量
我正在尝试使用Prometheus来监控持久卷的使用情况。我已经为一些PV添加了自定义标签，例如app=rabbitmq-0等
如何将kube_persistentvolume_labels和node_filesystem_size指标结合起来，以便使用自定义标签查询PV使用情况？
PS
我知道K8S1.8直接从kubelet公开了这些指标，如How to monitor disk usage of kubernetes persistent volumes？但目前集群升级不是一种选择。
从kube状态度量中的(v1.3.0-rc.0/2018-03-23(开始，添加了两个可以相应地将PersistentVolume和PersistenVolumeClaims标签转换为Prometheus标签的度量：
kube_persistentvolume_labels
kube_persistentvolumeclaim_lables
要获得有关实现基于标签的度量聚合的更多详细信息，请考虑阅读以下文章：
- 使用Prometheus聚合任意标签的Pod资源(CPU、内存(使用情况
- 向普罗米修斯展示软件版本
在某些情况下，主机路径无法装载到pod，或者项目(命名空间(无法访问节点。在这种情况下，无法部署节点导出器，在这种情况中，volume_exporter会很有用。
你可以将其添加为侧车
- name: volume-exporter
image: mnadeem/volume_exporter
imagePullPolicy: "Always"
args:
- --volume-dir=prometheus:/prometheus
ports:
- name: metrics-volume
containerPort: 9888
volumeMounts:
- mountPath: /prometheus
name: prometheus-data
readOnly: true
它将生成度量
# HELP volume_bytes_free Free size of the volume/disk
# TYPE volume_bytes_free gauge
volume_bytes_free{volume_name="bin",volume_path="/bin"} 4.341569536e+10
volume_bytes_free{volume_name="etc",volume_path="/etc"} 4.341569536e+10
# HELP volume_bytes_total Total size of the volume/disk
# TYPE volume_bytes_total gauge
volume_bytes_total{volume_name="bin",volume_path="/bin"} 6.391887872e+10
volume_bytes_total{volume_name="etc",volume_path="/etc"} 6.391887872e+10
# HELP volume_bytes_used Used size of volume/disk
# TYPE volume_bytes_used gauge
volume_bytes_used{volume_name="bin",volume_path="/bin"} 2.050318336e+10
volume_bytes_used{volume_name="etc",volume_path="/etc"} 2.050318336e+10
# HELP volume_exporter_build_info A metric with a constant '1' value labeled by version, revision, branch, and goversion from which volume_exporter was built.
# TYPE volume_exporter_build_info gauge
volume_exporter_build_info{branch="",goversion="go1.15",revision="",version=""} 1
# HELP volume_percentage_used Percentage of volume/disk Utilization
# TYPE volume_percentage_used gauge
volume_percentage_used{volume_name="bin",volume_path="/bin"} 32.07688208958619
volume_percentage_used{volume_name="etc",volume_path="/etc"} 32.07688208958619
有关的更多详细信息，请参阅此
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