[ALERT] Alertname:LonghornVolumeStatusWarning Container:longhorn-manager Endpoint:manager Instance:10.42.2.6:9500 Issue:Longhorn Volume Pvc-b9e5c8f4-edf9-473b-ade5-544848e1db96 Is Degraded. Job:longhorn-backend Namespace:longhorn-system Node:hive02 Pod:longhorn-manager-4jss5 Prometheus:kube-prometheus-stack/kube-prometheus-stack-prometheus Pvc:kanister-pvc-rm4xc Pvc_namespace:kasten-io Service:longhorn-backend Severity:warning Volume:pvc-b9e5c8f4-edf9-473b-ade5-544848e1db96

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Warning: Longhorn Volume Degradation

A critical alert has been triggered in your Longhorn system, indicating a degraded state of a volume. This alert is a warning sign that requires immediate attention to prevent potential data loss or system instability.

Alert Details

  • Alert Name: LonghornVolumeStatusWarning
  • Container: longhorn-manager
  • Endpoint: manager
  • Instance: 10.42.2.6:9500
  • Issue: Longhorn volume pvc-b9e5c8f4-edf9-473b-ade5-544848e1db96 is Degraded
  • Job: longhorn-backend
  • Namespace: longhorn-system
  • Node: hive02
  • Pod: longhorn-manager-4jss5
  • Prometheus: kube-prometheus-stack/kube-prometheus-stack-prometheus
  • PVC: kanister-pvc-rm4xc
  • PVC Namespace: kasten-io
  • Service: longhorn-backend
  • Severity: warning
  • Volume: pvc-b9e5c8f4-edf9-473b-ade5-544848e1db96

Common Labels

Label Value
alertname LonghornVolumeStatusWarning
container longhorn-manager
endpoint manager
instance 10.42.2.6:9500
issue Longhorn volume pvc-b9e5c8f4-edf9-473b-ade5-544848e1db96 is Degraded
job longhorn-backend
namespace longhorn-system
node hive02
pod longhorn-manager-4jss5
prometheus kube-prometheus-stack/kube-prometheus-stack-prometheus
pvc kanister-pvc-rm4xc
pvc_namespace kasten-io
service longhorn-backend
severity warning
volume pvc-b9e5c8f4-edf9-473b-ade5-544848e1db96

Common Annotations

Annotation Value
description Longhorn volume pvc-b9e5c8f4-edf9-473b-ade5-544848e1db96 on hive02 is Degraded for more than 10 minutes.
summary Longhorn volume pvc-b9e5c8f4-edf9-473b-ade5-544848e1db96 is Degraded

Alerts

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2025-04-25 20:55:15.019 +0000 UTC GeneratorURL

Understanding the Alert

The Longhorn Volume Status Warning alert is triggered when a volume is in a degraded state for more than 10 minutes. This can be caused by various factors such as disk errors, network issues, or software bugs. It is essential to investigate and resolve the issue promptly to prevent data loss or system instability.

Investigating the Alert

To investigate the alert, follow these steps:

  1. Check the volume status: Verify the status of the volume pvc-b9e5c8f4-edf9-473b-ade5-544848e1db96 using the Longhorn UI or CLI.
  2. Check the node status: Verify the status of the node hive02 using the Longhorn UI or CLI.
  3. Check the pod status: Verify the status of the pod longhorn-manager-4jss5 using the Longhorn UI or CLI.
  4. Check the PVC status: Verify the status of the PVC kanister-pvc-rm4xc using the Longhorn UI or CLI.
  5. Check the Prometheus metrics: Verify the Prometheus metrics for the volume, node, pod, and PVC using the Prometheus UI or CLI.

Resolving the Alert

To resolve the alert, follow these steps:

  1. Identify the root cause: Identify the root cause of the volume degradation using the investigation steps above.
  2. Fix the issue: Fix the issue causing the volume degradation.
  3. Verify the fix: Verify that the fix has resolved the issue by checking the volume status, node status, pod status, PVC status, and Prometheus metrics.
  4. Clear the alert: Clear the alert once the issue has been resolved.

Preventing Future Alerts

To prevent future alerts, follow these best practices:

  1. Regularly monitor the system: Regularly monitor the system for any issues or degradation.
  2. Implement automated monitoring: Implement automated monitoring using tools like Prometheus and Grafana.
  3. Implement automated alerting: Implement automated alerting using tools like Alertmanager.
  4. Regularly update and patch the system: Regularly update and patch the system to prevent known issues.
  5. Implement backup and recovery procedures: Implement backup and recovery procedures to prevent data loss in case of a disaster.

Frequently Asked Questions

Q: What is the Longhorn Volume Status Warning alert? A: The Longhorn Volume Status Warning alert is triggered when a volume is in a degraded state for more than 10 minutes. This can be caused by various factors such as disk errors, network issues, or software bugs.

Q: What are the common labels associated with this alert? A: The common labels associated with this alert are:

  • alertname: LonghornVolumeStatusWarning
  • container: longhorn-manager
  • endpoint: manager
  • instance: 10.42.2.6:9500
  • issue: Longhorn volume pvc-b9e5c8f4-edf9-473b-ade5-544848e1db96 is Degraded
  • job: longhorn-backend
  • namespace: longhorn-system
  • node: hive02
  • pod: longhorn-manager-4jss5
  • prometheus: kube-prometheus-stack/kube-prometheus-stack-prometheus
  • pvc: kanister-pvc-rm4xc
  • pvc_namespace: kasten-io
  • service: longhorn-backend
  • severity: warning
  • volume: pvc-b9e5c8f4-edf9-473b-ade5-544848e1db96

Q: What are the common annotations associated with this alert? A: The common annotations associated with this alert are:

  • description: Longhorn volume pvc-b9e5c8f4-edf9-473b-ade5-544848e1db96 on hive02 is Degraded for more than 10 minutes.
  • summary: Longhorn volume pvc-b9e5c8f4-edf9-473b-ade5-544848e1db96 is Degraded

Q: How can I investigate this alert? A: To investigate this alert, follow these steps:

  1. Check the volume status: Verify the status of the volume pvc-b9e5c8f4-edf9-473b-ade5-544848e1db96 using the Longhorn UI or CLI.
  2. Check the node status: Verify the status of the node hive02 using the Longhorn UI or CLI.
  3. Check the pod status: Verify the status of the pod longhorn-manager-4jss5 using the Longhorn UI or CLI.
  4. Check the PVC status: Verify the status of the PVC kanister-pvc-rm4xc using the Longhorn UI or CLI.
  5. Check the Prometheus metrics: Verify the Prometheus metrics for the volume, node, pod, and PVC using the Prometheus UI or CLI.

Q: How can I resolve this alert? A: To resolve this alert, follow these steps:

  1. Identify the root cause: Identify the root cause of the volume degradation using the investigation steps above.
  2. Fix the issue: Fix the issue causing the volume degradation.
  3. Verify the fix: Verify that the fix has resolved the issue by checking the volume status, node status, pod status, PVC status, and Prometheus metrics.
  4. Clear the alert: Clear the alert once the issue has been resolved.

Q: How can I prevent alerts? A: To prevent future alerts, follow these best practices:

  1. Regularly monitor the system: Regularly monitor the system for any issues or degradation.
  2. Implement automated monitoring: Implement automated monitoring using tools like Prometheus and Grafana.
  3. Implement automated alerting: Implement automated alerting using tools like Alertmanager.
  4. Regularly update and patch the system: Regularly update and patch the system to prevent known issues.
  5. Implement backup and recovery procedures: Implement backup and recovery procedures to prevent data loss in case of a disaster.

Q: What are the common causes of this alert? A: The common causes of this alert are:

  • Disk errors: Disk errors can cause the volume to become degraded.
  • Network issues: Network issues can cause the volume to become degraded.
  • Software bugs: Software bugs can cause the volume to become degraded.

Q: How can I troubleshoot this alert? A: To troubleshoot this alert, follow these steps:

  1. Check the system logs: Check the system logs for any errors or warnings related to the volume.
  2. Check the Prometheus metrics: Check the Prometheus metrics for the volume, node, pod, and PVC.
  3. Check the Longhorn UI or CLI: Check the Longhorn UI or CLI for any issues or degradation related to the volume.

By following these steps and best practices, you can troubleshoot and resolve the Longhorn Volume Status Warning alert and prevent future alerts.