2b0aba205f
The error rate formula (errors/total*100) produces NaN when there's zero traffic (0/0). Grafana treats NaN as a firing condition. Use clamp_min on the denominator to return 0% instead. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
89 lines
2.5 KiB
YAML
89 lines
2.5 KiB
YAML
apiVersion: 1
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groups:
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- orgId: 1
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name: trails.cool alerts
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folder: trails.cool
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interval: 1m
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rules:
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- uid: disk-usage-high
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title: Disk usage > 80%
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condition: B
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data:
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- refId: A
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relativeTimeRange: { from: 600, to: 0 }
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datasourceUid: prometheus
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model:
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expr: (1 - node_filesystem_avail_bytes{mountpoint="/"} / node_filesystem_size_bytes{mountpoint="/"}) * 100
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instant: true
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- refId: B
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datasourceUid: __expr__
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model:
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type: threshold
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expression: A
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conditions:
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- evaluator: { params: [80], type: gt }
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operator: { type: and }
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reducer: { type: last }
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for: 15m
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annotations:
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summary: "Disk usage is above 80%"
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- uid: app-health-failing
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title: App health check failing
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condition: B
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data:
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- refId: A
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relativeTimeRange: { from: 300, to: 0 }
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datasourceUid: prometheus
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model:
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expr: up{job=~"journal|planner"}
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instant: true
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- refId: B
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datasourceUid: __expr__
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model:
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type: threshold
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expression: A
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conditions:
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- evaluator: { params: [1], type: lt }
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operator: { type: and }
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reducer: { type: last }
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for: 2m
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annotations:
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summary: "{{ $labels.job }} is down"
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- uid: error-rate-high
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title: Error rate > 5%
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condition: B
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data:
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- refId: A
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relativeTimeRange: { from: 600, to: 0 }
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datasourceUid: prometheus
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model:
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expr: sum(rate(http_request_duration_seconds_count{status=~"5.."}[5m])) / clamp_min(sum(rate(http_request_duration_seconds_count[5m])), 0.001) * 100
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instant: true
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- refId: B
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datasourceUid: __expr__
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model:
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type: threshold
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expression: A
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conditions:
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- evaluator: { params: [5], type: gt }
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operator: { type: and }
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reducer: { type: last }
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for: 5m
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annotations:
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summary: "Error rate is above 5%"
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contactPoints:
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- orgId: 1
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name: email
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receivers:
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- uid: email-default
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type: email
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settings:
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addresses: admin@trails.cool
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policies:
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- orgId: 1
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receiver: email
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