ProxmoxBackupPoolDiskOutOfSpace

ProxmoxBackupPoolDiskOutOfSpace #

Disk is almost full (< 10% left)

Alert Rule
alert: ProxmoxBackupPoolDiskOutOfSpace
annotations:
  description: |-
    Disk is almost full (&lt; 10% left)
      VALUE = {{ $value }}    
  runbook: https://srerun.github.io/prometheus-alerts/runbooks/pbs-exporter/proxmoxbackuppooldiskoutofspace/
  summary: Proxmox datastore out of space (datastore {{ $labels.datastore }})
expr: pbs_used / pbs_size * 100 &gt; 90
for: 2m
labels:
  severity: warning

Here is a sample runbook for the Prometheus alert rule:

Meaning #

This alert is triggered when a Proxmox backup pool disk is almost out of space, with less than 10% of free space left. This can cause backups to fail, leading to potential data loss.

Impact #

The impact of this alert is not addressed, backups may fail, resulting in:

  • Data loss due to failed backups
  • Increased risk of data corruption
  • Inability to restore data in case of a disaster

Diagnosis #

To diagnose the issue, follow these steps:

  1. Check the Proxmox backup pool disk usage using the pbs_used and pbs_size metrics in Prometheus.
  2. Verify that the disk is indeed running low on space.
  3. Check the backup pool configuration to ensure it is set up correctly.

Mitigation #

To mitigate the issue, follow these steps:

  1. Increase the size of the Proxmox backup pool disk.
  2. Remove unnecessary files or backups to free up space on the disk.
  3. Consider implementing a more efficient backup retention policy to minimize storage usage.
  4. Verify that backups are completing successfully and that data is being properly stored.

Additional Resources:

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