HPE CSI Info Metrics Provider for Prometheus¶

The HPE CSI Driver for Kubernetes may be accompanied by a Prometheus metrics endpoint to provide metadata about the volumes provisioned by the CSI driver and supporting backends. It's conventionally deployed with HPE Storage Array Exporter for Prometheus to provide a richer set of metrics from the backend storage systems.

Metrics Provided¶

The exporter provides two metrics, "hpestoragecsi_volume_info" and "hpestoragecsi_backend_info".

Volume Info¶

Metric	Type	Description	Value
hpestoragecsi_volume_info	Gauge	Indicates a volume whose provisioner is the HPE CSI Driver.	1

This metric includes the following labels.

Label	Description
backend	Backend hostname or IP address as defined in the Secret.
pv	PersistentVolume name.
pvc	PersistentVolumeClaim name.
pvc_namespace	PersistentVolumeClaim Namespace.
storage_class	StorageClass used to provision the PersistentVolume.
volume	Volume handle used by the backend storage system.

Backend Info¶

Metric	Type	Description	Value
hpestoragecsi_backend_info	Gauge	Indicates a storage system for which the HPE CSI driver is a provisioner.	1

This metric includes the following labels.

Label	Description
backend	Backend hostname or IP address as defined in the Secret.

Deployment¶

The exporter may be installed either via Helm or through YAML manifests with the object definitions. It's recommended to use Helm as it's more convenient to manage the configuration of the deployment.

Helm¶

The Helm chart is available on Artifact Hub. Instructions on how to manage and install the chart is available within the chart documentation.

• HPE CSI Info Metrics Provider for Prometheus Helm chart

Rancher¶

Since Rancher v2.7 and HPE CSI Driver for Kubernetes v2.3.0 it's possible to install the HPE CSI Info Metrics Provider through the Apps interface in Rancher to use with Rancher Monitoring. Please see the Rancher partner page for more information.

Advanced Install¶

Before beginning an advanced install, determine how Prometheus will be deployed on the Kubernetes cluster as it will dictate how the scrape target will be configured with either a Service annotation or a ServiceMonitor CRD.

Start by downloading the manifest, which needs to be modified before applying to the cluster.

Version 1.0.2¶

Supports HPE CSI Driver for Kubernetes 2.0.0 and later.

wget https://raw.githubusercontent.com/hpe-storage/co-deployments/master/yaml/csi-info-metrics/v1.0.2/hpe-csi-info-metrics.yaml

Optional ServiceMonitor definition:

wget https://raw.githubusercontent.com/hpe-storage/co-deployments/master/yaml/csi-info-metrics/v1.0.2/hpe-csi-info-metrics-service-monitor.yaml

Configuring Advanced Install¶

Update the main container parameters and optionally add service labels and annotations.

In the "hpe-csi-info-metrics" Deployment at .spec.template.spec.containers[0].args in "hpe-csi-info-metrics.yaml":

          args:
            - "--telemetry.addr=:9099"
            - "--telemetry.path=/metrics"
            # IMPORTANT: Uncomment this argument to confirm your
            # acceptance of the HPE End User License Agreement at
            # https://www.hpe.com/us/en/software/licensing.html
            #- "--accept-eula"

Remove the # in front of --accept-eula to accept the HPE license restrictions.

In the "hpe-csi-info-metrics-service" Service:

metadata:
  name: hpe-csi-info-metrics-service
  namespace: hpe-storage
  labels:
    app: hpe-csi-info-metrics
    # Optionally add labels, for example to be included in Prometheus
    # metrics via a targetLabels setting in a ServiceMonitor spec
    #cluster: my-cluster
  # Optionally add annotations, for example to configure it as a
  # scrape target when using the Prometheus Helm chart's default
  # configuration.
  #annotations:
  #  "prometheus.io/scrape": "true"

• Apply and uncomment any custom labels. It's recommended to use a "cluster" label to use the provided Grafana dashboards.
• If Prometheus has been deployed without the Operator, uncomment the annotation.

Apply the manifest:

kubectl apply -f hpe-csi-info-metrics.yaml

Optionally, if using the Prometheus Operator, add any additional labels in "hpe-csi-info-metrics-service-monitor.yaml":

  # Corresponding labels on the CSI Info Metrics service are added to
  # the scraped metrics
  #targetLabels:
  #  - cluster

Apply the manifest:

kubectl apply -f hpe-csi-info-metrics-service-monitor.yaml

Grafana Dashboards¶

Example Grafana dashboards, provided as is, are hosted on grafana.com.