See current filesystem utilization - Kubernetes

This topic describes how to monitor Zesty Disk for K8s. You can monitor from the Zesty platform, Prometheus, or Grafana.

Click the link for the desired monitoring method:

• Monitor Zesty Disk for K8s from the Zesty platform

• Monitor Zesty Disk for K8s from Prometheus

• Monitor Zesty Disk for K8s from Grafana

Monitor Zesty Disk for K8s from the Zesty platform

Prerequisites

• Access to the Zesty platform, described in Access the Zesty platform

To monitor Zesty Disk from the Zesty platform:

1. Log in to the Zesty platform at https://app.zesty.co

2. From the main menu, select Zesty Disk.

3. From the Managed filesystems tab, review the filesystems that are managed by Zesty Disk, marked as

4. Select a filesystem and review filesystem data:
   

   • In the Metrics tab, you can see the capacity, IOPS, and Throughput changes.

   • In the Tags tab, you can see instance and volume tags.

     Note the

     “kubernetes.io/created-for/pvc/name” tag whose value is the Zesty PVC name.

Monitor Zesty Disk for K8s from Prometheus

To monitor using Prometheus you need to install the Zesty Disk for K8s with the Prometheus exporter option. Once installed, Zesty automatically adds the annotations below to the Zesty Storage Agent so it can be discovered by Prometheus.

For more details, see Deploy Zesty Disk for K8s.

prometheus.io/port=<PORT_FROM_HELM_VALUES>
prometheus.io/scrape=true

Available queries

You can query the following utilization parameters:

• Total PVC capacity
  label_replace(sum(kubelet_volume_stats_capacity_bytes) / 1024 / 1024 / 1024, "metric", "Total PVC's capacity", "", "")

• Total PVC used size
  label_replace(sum(kubelet_volume_stats_used_bytes) / 1024 / 1024 / 1024, "metric", "Total PVC's used size", "", "")

• PVC average utilization
  label_replace(avg(kubelet_volume_stats_used_bytes / kubelet_volume_stats_capacity_bytes) * 100, "metric", "PVC's avg utilization", "", "")

• Amount of PV in cluster
  label_replace(count(kube_persistentvolume_info{csi_driver="ebs.csi.aws.com", job="kubernetes-services"}), "metric", "Amount of PV's in cluster", "", "")

• Average PV size
  label_replace(avg(kubelet_volume_stats_capacity_bytes) / 1024 / 1024 / 1024, "metric", "Average PV Size", "", "")

• Amount of StatefulSets in cluster
  label_replace(count(kube_statefulset_persistentvolumeclaim_retention_policy{job="kubernetes-services"}), "metric", "Amount of StatefulSets in cluster", "", "")

Monitor Zesty Disk for K8s from Grafana

Zesty provides a custom Grafana dashboard that shows Zesty Disk for K8s PVCs metrics.

To import the dashboard to your Grafana, use the following link: https://static.zesty.co/ZestyDiskPVC/zesty-pvc-grafana-dashboard.json