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第6章 OpenShift Container Storage のアラートおよびエラーのトラブルシューティング

6.1. アラートとエラーの解決

Red Hat OpenShift Container Storage は、多くの共通する障害シナリオを検出し、これらを自動的に解決できます。ただし、一部の問題には管理者の介入が必要です。

現在発生しているエラーを確認するには、以下のいずれかの場所を確認します。

  • MonitoringAlertingFiring オプション
  • HomeOverviewOverview タブ
  • HomeOverviewPersistent Storage タブ
  • HomeOverviewObject Service タブ

表示されるエラーをコピーして、これを以下のセクションで検索し、その重大度と解決策を確認します。

Name: CephMonVersionMismatch

Message: There are multiple versions of storage services running.

Description: There are {{ $value }} different versions of Ceph Mon components running.

Severity: Warning

Resolution: Fix

Procedure: Inspect the user interface and log, and verify if an update is in progress.

  • If an update in progress, this alert is temporary.
  • If an update is not in progress, restart the upgrade process.

Name: CephOSDVersionMismatch

Message: There are multiple versions of storage services running.

Description: There are {{ $value }} different versions of Ceph OSD components running.

Severity: Warning

Resolution: Fix

Procedure: Inspect the user interface and log, and verify if an update is in progress.

  • If an update in progress, this alert is temporary.
  • If an update is not in progress, restart the upgrade process.

Name: CephClusterCriticallyFull

Message: Storage cluster is critically full and needs immediate expansion

Description: Storage cluster utilization has crossed 85%.

Severity: Crtical

Resolution: Fix

Procedure: Remove unnecessary data or expand the cluster.

Name: CephClusterNearFull

Fixed: Storage cluster is nearing full.Expansion is required.

Description: Storage cluster utilization has crossed 75%.

Severity: Warning

Resolution: Fix

Procedure: Remove unnecessary data or expand the cluster.

Name: NooBaaBucketErrorState

Message: A NooBaa Bucket Is In Error State

Description: A NooBaa bucket {{ $labels.bucket_name }} is in error state for more than 6m

Severity: Warning

Resolution: Workaround

Procedure: Resolving NooBaa Bucket Error State

Name: NooBaaNamespaceResourceErrorState

Message: A NooBaa Namespace Resource Is In Error State

Description: A NooBaa namespace resource {{ $labels.namespace_resource_name }} is in error state for more than 5m

Severity: Warning

Resolution: Fix

Procedure: Resolving NooBaa Bucket Error State

Name: NooBaaNamespaceBucketErrorState

Message: A NooBaa Namespace Bucket Is In Error State

Description: A NooBaa namespace bucket {{ $labels.bucket_name }} is in error state for more than 5m

Severity: Warning

Resolution: Fix

Procedure: Resolving NooBaa Bucket Error State

Name: NooBaaBucketExceedingQuotaState

Message: A NooBaa Bucket Is In Exceeding Quota State

Description: A NooBaa bucket {{ $labels.bucket_name }} is exceeding its quota - {{ printf "%0.0f" $value }}% used message: A NooBaa Bucket Is In Exceeding Quota State

Severity: Warning

Resolution: Fix

Procedure: Resolving NooBaa Bucket Exceeding Quota State

Name: NooBaaBucketLowCapacityState

Message: A NooBaa Bucket Is In Low Capacity State

Description: A NooBaa bucket {{ $labels.bucket_name }} is using {{ printf "%0.0f" $value }}% of its capacity

Severity: Warning

Resolution: Fix

Procedure: Resolving NooBaa Bucket Capacity or Quota State

Name: NooBaaBucketNoCapacityState

Message: A NooBaa Bucket Is In No Capacity State

Description: A NooBaa bucket {{ $labels.bucket_name }} is using all of its capacity

Severity: Warning

Resolution: Fix

Procedure: Resolving NooBaa Bucket Capacity or Quota State

Name: NooBaaBucketReachingQuotaState

Message: A NooBaa Bucket Is In Reaching Quota State

Description: A NooBaa bucket {{ $labels.bucket_name }} is using {{ printf "%0.0f" $value }}% of its quota

Severity: Warning

Resolution: Fix

Procedure: Resolving NooBaa Bucket Capacity or Quota State

Name: NooBaaResourceErrorState

Message: A NooBaa Resource Is In Error State

Description: A NooBaa resource {{ $labels.resource_name }} is in error state for more than 6m

Severity: Warning

Resolution: Workaround

Procedure: Resolving NooBaa Bucket Error State

Name: NooBaaSystemCapacityWarning100

Message: A NooBaa System Approached Its Capacity

Description: A NooBaa system approached its capacity, usage is at 100%

Severity: Warning

Resolution: Fix

Procedure: Resolving NooBaa Bucket Capacity or Quota State

Name: NooBaaSystemCapacityWarning85

Message: A NooBaa System Is Approaching Its Capacity

Description: A NooBaa system is approaching its capacity, usage is more than 85%

Severity: Warning

Resolution: Fix

Procedure: Resolving NooBaa Bucket Capacity or Quota State

Name: NooBaaSystemCapacityWarning95

Message: A NooBaa System Is Approaching Its Capacity

Description: A NooBaa system is approaching its capacity, usage is more than 95%

Severity: Warning

Resolution: Fix

Procedure: Resolving NooBaa Bucket Capacity or Quota State

Name: CephMdsMissingReplicas

Message: Insufficient replicas for storage metadata service.

Description: `Minimum required replicas for storage metadata service not available.

Might affect the working of storage cluster.`

Severity: Warning

Resolution: Contact Red Hat support

Procedure:

  1. Check for alerts and operator status.
  2. If the issue cannot be identified, contact Red Hat support.

Name: CephMgrIsAbsent

Message: Storage metrics collector service not available anymore.

Description: Ceph Manager has disappeared from Prometheus target discovery.

Severity: Critical

Resolution: Contact Red Hat support

Procedure:

  1. Inspect the user interface and log, and verify if an update is in progress.

    • If an update in progress, this alert is temporary.
    • If an update is not in progress, restart the upgrade process.
  2. Once the upgrade is complete, check for alerts and operator status.
  3. If the issue persistents or cannot be identified, contact Red Hat support.

Name: CephNodeDown

Message: Storage node {{ $labels.node }} went down

Description: Storage node {{ $labels.node }} went down.Please check the node immediately.

Severity: Critical

Resolution: Contact Red Hat support

Procedure:

  1. Check which node stopped functioning and its cause.
  2. Take appropriate actions to recover the node.If node cannot be recovered:

Name: CephClusterErrorState

Message: Storage cluster is in error state

Description: Storage cluster is in error state for more than 10m.

Severity: Critical

Resolution: Contact Red Hat support

Procedure:

  1. Check for alerts and operator status.
  2. If the issue cannot be identified, download log files and diagnostic information using must-gather.
  3. Open a Support Ticket with Red Hat Support with an attachment of the output of must-gather.

Name: CephClusterWarningState

Message: Storage cluster is in degraded state

Description: Storage cluster is in warning state for more than 10m.

Severity: Warning

Resolution: Contact Red Hat support

Procedure:

  1. Check for alerts and operator status.
  2. If the issue cannot be identified, download log files and diagnostic information using must-gather.
  3. Open a Support Ticket with Red Hat Support with an attachment of the output of must-gather.

Name: CephDataRecoveryTakingTooLong

Message: Data recovery is slow

Description: Data recovery has been active for too long.

Severity: Warning

Resolution: Contact Red Hat support

Name: CephOSDDiskNotResponding

Message: Disk not responding

Description: Disk device {{ $labels.device }} not responding, on host {{ $labels.host }}.

Severity: Critical

Resolution: Contact Red Hat support

Name: CephOSDDiskUnavailable

Message: Disk not accessible

Description: Disk device {{ $labels.device }} not accessible on host {{ $labels.host }}.

Severity: Critical

Resolution: Contact Red Hat support

Name: CephPGRepairTakingTooLong

Message: Self heal problems detected

Description: Self heal operations taking too long.

Severity: Warning

Resolution: Contact Red Hat support

Name: CephMonHighNumberOfLeaderChanges

Message: Storage Cluster has seen many leader changes recently.

Description: 'Ceph Monitor "{{ $labels.job }}": instance {{ $labels.instance }} has seen {{ $value printf "%.2f" }} leader changes per minute recently.'

Severity: Warning

Resolution: Contact Red Hat support

Name: CephMonQuorumAtRisk

Message: Storage quorum at risk

Description: Storage cluster quorum is low.

Severity: Critical

Resolution: Contact Red Hat support

Name: ClusterObjectStoreState

Message: Cluster Object Store is in unhealthy state.Please check Ceph cluster health.

Description: Cluster Object Store is in unhealthy state for more than 15s.Please check Ceph cluster health.

Severity: Critical

Resolution: Contact Red Hat support

Procedure:

Name: CephOSDFlapping

Message: Storage daemon osd.x has restarted 5 times in the last 5 minutes.Please check the pod events or Ceph status to find out the cause.

Description: Storage OSD restarts more than 5 times in 5 minutes.

Severity: Critical

Resolution: Contact Red Hat support