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

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

Nova

This section lists the alerts for Nova:

• NovaDataDirectoryMountedRO

• NovaOrphanedAllocationsDetected

• NovaServiceDisabled

• NovaServiceDown

• NovaServiceOutage

NovaDataDirectoryMountedRO

Available since MOSK 25.2

Severity	Critical
Summary	Nova data directory is mounted as read-only.
Description	Nova data directory (/var/lib/nova) on the compute node {{ $labels.node }} is mounted as read-only. This may indicate disk failures. Investigate the disk health.

NovaOrphanedAllocationsDetected

Available since MOSK 24.3

Severity	Major
Summary	Openstack Nova orphaned allocations detected.
Description	Orphaned resource allocations are detected on compute nodes.

NovaServiceDisabled

Severity	Critical
Summary	{{ $labels.binary }} service is disabled.
Description	The {{ $labels.binary }} service is disabled in the {{ $labels.zone }} zone on all hosts.

NovaServiceDown

Severity	Critical
Summary	{{ $labels.binary }} service is down.
Description	The {{ $labels.binary }} service is in the down state in the {{ $labels.zone }} zone on the {{ $labels.host }} host.

NovaServiceOutage

Severity	Critical
Summary	{{ $labels.binary }} service outage.
Description	The {{ $labels.binary }} service is down in the {{ $labels.zone }} zone on all hosts where it is enabled.