Mirantis Container Cloud (MCC) becomes part of Mirantis OpenStack for Kubernetes (MOSK)!

Starting with MOSK 25.2, the MOSK documentation set will cover all product layers, including MOSK management (formerly MCC). This means everything you need will be in one place. The separate MCC documentation site will be retired, so please update your bookmarks for continued easy access to the latest content.

Kubernetes storage

This section lists the alerts for Kubernetes storage.

For troubleshooting guidelines, see Troubleshoot Kubernetes storage alerts.

Caution

Due to the upstream bug in Kubernetes, metrics for the KubePersistentVolumeUsageCritical and KubePersistentVolumeFullInFourDays alerts that are collected for persistent volumes provisioned by cinder-csi-plugin are not available.


KubePersistentVolumeUsageCritical

Severity

Critical

Summary

PersistentVolume {{ $labels.persistentvolumeclaim }} has less than 3% of free space.

Description

The PersistentVolume claimed by {{ $labels.persistentvolumeclaim }} in the {{ $labels.namespace }} namespace is only {{ printf "%0.2f" $value }}% free.

KubePersistentVolumeFullInFourDays

Severity

Warning

Summary

PersistentVolume {{ $labels.persistentvolumeclaim }} is expected to fill up in 4 days.

Description

The PersistentVolume claimed by {{ $labels.persistentvolumeclaim }} in the {{ $labels.namespace }} namespace is expected to fill up within four days. Currently, {{ printf "%0.2f" $value }}% of free space is available.

KubePersistentVolumeErrors

Severity

Critical

Summary

PersistentVolume {{ $labels.persistentvolume }} is in the failed or pending state.

Description

The PersistentVolume {{ $labels.persistentvolume }} is in the failed or pending state.