Alert thresholds depend on the nature of your applications. Some queries may have arbitrary tolerance thresholds. Building an efficient monitoring platform takes time. 😉
3 Prometheus alerting rules for Minio. Exported via Embedded exporter. These rules cover critical and warning conditions — copy and paste the YAML into your Prometheus configuration.
groups:
- name: EmbeddedExporter
rules:
- alert: MinioClusterDiskOffline
expr: minio_cluster_drive_offline_total > 0
for: 0m
labels:
severity: critical
annotations:
summary: Minio cluster disk offline (instance {{ $labels.instance }})
description: "Minio cluster disk is offline\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
- alert: MinioNodeDiskOffline
expr: minio_cluster_nodes_offline_total > 0
for: 0m
labels:
severity: critical
annotations:
summary: Minio node disk offline (instance {{ $labels.instance }})
description: "Minio cluster node disk is offline\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
- alert: MinioDiskSpaceUsage
expr: minio_cluster_capacity_raw_free_bytes / minio_cluster_capacity_raw_total_bytes * 100 < 10 and minio_cluster_capacity_raw_total_bytes > 0
for: 0m
labels:
severity: warning
annotations:
summary: Minio disk space usage (instance {{ $labels.instance }})
description: "Minio available free space is low (< 10%)\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" wget https://raw.githubusercontent.com/samber/awesome-prometheus-alerts/refs/heads/master/dist/rules/minio/embedded-exporter.yml
Minio cluster disk is offline
- alert: MinioClusterDiskOffline
expr: minio_cluster_drive_offline_total > 0
for: 0m
labels:
severity: critical
annotations:
summary: Minio cluster disk offline (instance {{ $labels.instance }})
description: "Minio cluster disk is offline\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" Minio cluster node disk is offline
- alert: MinioNodeDiskOffline
expr: minio_cluster_nodes_offline_total > 0
for: 0m
labels:
severity: critical
annotations:
summary: Minio node disk offline (instance {{ $labels.instance }})
description: "Minio cluster node disk is offline\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" Minio available free space is low (< 10%)
- alert: MinioDiskSpaceUsage
expr: minio_cluster_capacity_raw_free_bytes / minio_cluster_capacity_raw_total_bytes * 100 < 10 and minio_cluster_capacity_raw_total_bytes > 0
for: 0m
labels:
severity: warning
annotations:
summary: Minio disk space usage (instance {{ $labels.instance }})
description: "Minio available free space is low (< 10%)\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"