traefik-prometheus-rules

groups:
- name: traefik
  rules:
  - alert: TraefikBackendDown
    expr: count(traefik_backend_server_up) by (backend) == 0
    for: 5m
    labels:
      severity: critical
    annotations:
      summary: Traefik backend down (instance {{ $labels.instance }})
      description: All Traefik backends are down

  - alert: TraefikHighHttp4xxErrorRateBackend
    expr: sum(rate(traefik_backend_requests_total{code=~"4.*"}[3m])) by (backend) / sum(rate(traefik_backend_requests_total[3m])) by (backend) * 100 > 5
    for: 5m
    labels:
      severity: critical
    annotations:
      summary: Traefik high HTTP 4xx error rate backend (instance {{ $labels.instance }})
      description: Traefik backend 4xx error rate is above 5%

  - alert: TraefikHighHttp5xxErrorRateBackend
    expr: sum(rate(traefik_backend_requests_total{code=~"5.*"}[3m])) by (backend) / sum(rate(traefik_backend_requests_total[3m])) by (backend) * 100 > 5
    for: 5m
    labels:
      severity: critical
    annotations:
      summary: Traefik high HTTP 5xx error rate backend (instance {{ $labels.instance }})
      description: Traefik backend 5xx error rate is above 5%

  - alert: TraefikServiceDown
    expr: count(traefik_service_server_up) by (service) == 0
    for: 5m
    labels:
      severity: critical
    annotations:
      summary: Traefik service down (instance {{ $labels.instance }})
      description: All Traefik services are down

  - alert: TraefikHighHttp4xxErrorRateService
    expr: sum(rate(traefik_service_requests_total{code=~"4.*"}[3m])) by (service) / sum(rate(traefik_service_requests_total[3m])) by (service) * 100 > 5
    for: 5m
    labels:
      severity: critical
    annotations:
      summary: Traefik high HTTP 4xx error rate service (instance {{ $labels.instance }})
      description: Traefik service 4xx error rate is above 5%

  - alert: TraefikHighHttp5xxErrorRateService
    expr: sum(rate(traefik_service_requests_total{code=~"5.*"}[3m])) by (service) / sum(rate(traefik_service_requests_total[3m])) by (service) * 100 > 5
    for: 5m
    labels:
      severity: critical
    annotations:
      summary: Traefik high HTTP 5xx error rate service (instance {{ $labels.instance }})
      description: Traefik service 5xx error rate is above 5%