6 Istio : Embedded exporter

Embedded exporter

1. Istio Kubernetes gateway availability drop

Gateway pods have dropped. Inbound traffic will likely be affected.

  - alert: IstioKubernetesGatewayAvailabilityDrop
    expr: min(kube_deployment_status_replicas_available{deployment="istio-ingressgateway", namespace="istio-system"}) without (instance, pod) < 2
    for: 1m
    labels:
      severity: warning
    annotations:
      summary: Istio Kubernetes gateway availability drop (instance {{ $labels.instance }})
      description: "Gateway pods have dropped. Inbound traffic will likely be affected.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

2. Istio Pilot high total request rate

Number of Istio Pilot push errors is too high (> 5%). Envoy sidecars might have outdated configuration.

  - alert: IstioPilotHighTotalRequestRate
    expr: sum(rate(pilot_xds_push_errors[1m])) / sum(rate(pilot_xds_pushes[1m])) * 100 > 5
    for: 1m
    labels:
      severity: warning
    annotations:
      summary: Istio Pilot high total request rate (instance {{ $labels.instance }})
      description: "Number of Istio Pilot push errors is too high (> 5%). Envoy sidecars might have outdated configuration.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

3. Istio Mixer Prometheus dispatches low

Number of Mixer dispatches to Prometheus is too low. Istio metrics might not be being exported properly.

  - alert: IstioMixerPrometheusDispatchesLow
    expr: sum(rate(mixer_runtime_dispatches_total{adapter=~"prometheus"}[1m])) < 180
    for: 1m
    labels:
      severity: warning
    annotations:
      summary: Istio Mixer Prometheus dispatches low (instance {{ $labels.instance }})
      description: "Number of Mixer dispatches to Prometheus is too low. Istio metrics might not be being exported properly.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

4. Istio high total request rate

Global request rate in the service mesh is unusually high.

  - alert: IstioHighTotalRequestRate
    expr: sum(rate(istio_requests_total{reporter="destination"}[5m])) > 1000
    for: 2m
    labels:
      severity: warning
    annotations:
      summary: Istio high total request rate (instance {{ $labels.instance }})
      description: "Global request rate in the service mesh is unusually high.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

5. Istio low total request rate

Global request rate in the service mesh is unusually low.

  - alert: IstioLowTotalRequestRate
    expr: sum(rate(istio_requests_total{reporter="destination"}[5m])) < 100
    for: 2m
    labels:
      severity: warning
    annotations:
      summary: Istio low total request rate (instance {{ $labels.instance }})
      description: "Global request rate in the service mesh is unusually low.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

6. Istio high 4xx error rate

High percentage of HTTP 5xx responses in Istio (> 5%).

  - alert: IstioHigh4xxErrorRate
    expr: sum(rate(istio_requests_total{reporter="destination", response_code=~"4.*"}[5m])) / sum(rate(istio_requests_total{reporter="destination"}[5m])) * 100 > 5
    for: 1m
    labels:
      severity: warning
    annotations:
      summary: Istio high 4xx error rate (instance {{ $labels.instance }})
      description: "High percentage of HTTP 5xx responses in Istio (> 5%).\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

7. Istio high 5xx error rate****

High percentage of HTTP 5xx responses in Istio (> 5%).

  - alert: IstioHigh5xxErrorRate
    expr: sum(rate(istio_requests_total{reporter="destination", response_code=~"5.*"}[5m])) / sum(rate(istio_requests_total{reporter="destination"}[5m])) * 100 > 5
    for: 1m
    labels:
      severity: warning
    annotations:
      summary: Istio high 5xx error rate (instance {{ $labels.instance }})
      description: "High percentage of HTTP 5xx responses in Istio (> 5%).\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

8. Istio high request latency

Istio average requests execution is longer than 100ms.

  - alert: IstioHighRequestLatency
    expr: rate(istio_request_duration_milliseconds_sum[1m]) / rate(istio_request_duration_milliseconds_count[1m]) > 0.1
    for: 1m
    labels:
      severity: warning
    annotations:
      summary: Istio high request latency (instance {{ $labels.instance }})
      description: "Istio average requests execution is longer than 100ms.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

9. Istio latency 99 percentile

Istio 1% slowest requests are longer than 1s.

  - alert: IstioLatency99Percentile
    expr: histogram_quantile(0.99, rate(istio_request_duration_milliseconds_bucket[1m])) > 1
    for: 1m
    labels:
      severity: warning
    annotations:
      summary: Istio latency 99 percentile (instance {{ $labels.instance }})
      description: "Istio 1% slowest requests are longer than 1s.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

10. Istio Pilot Duplicate Entry

Istio pilot duplicate entry error.

  - alert: IstioPilotDuplicateEntry
    expr: sum(rate(pilot_duplicate_envoy_clusters{}[5m])) > 0
    for: 0m
    labels:
      severity: critical
    annotations:
      summary: Istio Pilot Duplicate Entry (instance {{ $labels.instance }})
      description: "Istio pilot duplicate entry error.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"