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.

Prometheus

This section describes the alerts for the Prometheus service.

• PrometheusConfigReloadFailed

• PrometheusNotificationQueueRunningFull

• PrometheusErrorSendingAlertsWarning

• PrometheusErrorSendingAlertsMajor

• PrometheusNotConnectedToAlertmanagers

• PrometheusTSDBReloadsFailing

• PrometheusTSDBCompactionsFailing

• PrometheusTSDBWALCorruptions

• PrometheusNotIngestingSamples

• PrometheusTargetScrapesDuplicate

• PrometheusRuleEvaluationsFailed

• PrometheusServerTargetDown

• PrometheusServerTargetsOutage

---

PrometheusConfigReloadFailed

Severity	Warning
Summary	Failure to reload the Prometheus configuration.
Description	Reloading of the Prometheus configuration has failed.

PrometheusNotificationQueueRunningFull

Severity	Warning
Summary	Prometheus alert notification queue is running full.
Description	The Prometheus alert notification queue is running full for the {{ $labels.namespace }}/{{ $labels.pod }} Pod.

PrometheusErrorSendingAlertsWarning

Severity	Warning
Summary	Errors while sending alerts from Prometheus.
Description	Errors while sending alerts from the {{ $labels.namespace }}/{{ $labels.pod }} Prometheus Pod to the {{ $labels.Alertmanager }} Alertmanager.

PrometheusErrorSendingAlertsMajor

Severity	Major
Summary	Errors while sending alerts from Prometheus.
Description	Errors while sending alerts from the {{ $labels.namespace }}/{{ $labels.pod }} Prometheus Pod to the {{ $labels.alertmanager }} Alertmanager.

PrometheusNotConnectedToAlertmanagers

Severity	Warning
Summary	Prometheus is not connected to any Alertmanager.
Description	The {{ $labels.namespace }}/{{ $labels.pod }} Prometheus Pod is not connected to any Alertmanager instance.

PrometheusTSDBReloadsFailing

Severity	Warning
Summary	Prometheus has issues reloading data blocks from disk.
Description	The {{ $labels.namespace }}/{{ $labels.pod }} Prometheus Pod had {{ $value | humanize }} reload failures over the last 12 hours.

PrometheusTSDBCompactionsFailing

Severity	Warning
Summary	Prometheus has issues compacting sample blocks.
Description	The {{ $labels.namespace }}/{{ $labels.pod }} Prometheus Pod had {{ $value | humanize }} compaction failures over the last 12 hours.

PrometheusTSDBWALCorruptions

Severity	Warning
Summary	Prometheus encountered WAL corruptions.
Description	The {{ $labels.namespace }}/{{ $labels.pod }} Prometheus Pod has write-ahead log (WAL) corruptions in the time series database (TSDB) for the last 5 minutes.

PrometheusNotIngestingSamples

Severity	Major
Summary	Prometheus does not ingest samples.
Description	The {{ $labels.namespace }}/{{ $labels.pod }} Prometheus Pod does not ingest samples.

PrometheusTargetScrapesDuplicate

Severity	Warning
Summary	Prometheus has many samples rejected.
Description	The {{ $labels.namespace }}/{{ $labels.pod }} Prometheus Pod has many samples rejected due to duplicate timestamps but different values.

PrometheusRuleEvaluationsFailed

Severity	Warning
Summary	Prometheus failed to evaluate recording rules.
Description	The {{ $labels.namespace }}/{{ $labels.pod }} Prometheus Pod has failed evaluations for recording rules. Verify the rules state in the Status/Rules section of the Prometheus web UI.

PrometheusServerTargetDown

Since MCC 2.25.0 (17.0.0 and 16.0.0) to replace PrometheusServerTargetsOutage

Severity	Critical
Summary	Prometheus server target down.
Description	Prometheus fails to scrape metrics from the {{ $labels.pod }} Pod on the {{ $labels.node }} node.

PrometheusServerTargetsOutage

Replaced with PrometheusServerTargetDown in MCC 2.25.0 (17.0.0 and 16.0.0)

Severity	Critical
Summary	Prometheus server targets outage.
Description	Prometheus fails to scrape metrics from all of its endpoints (more than 1/10 failed scrapes).