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Merged
wirwolf merged 2 commits into from
Mar 17, 2026
Merged

filter out fluentd false positive alerts (inf division, internal plug… #29

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85b0688
fix: eliminate false positive fluentd alerts (inf division, internal …
Mar 17, 2026
707a513
bump chart version
Mar 17, 2026
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4 changes: 2 additions & 2 deletions charts/banzaicloud-logging-operator-monitoring/Chart.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,8 @@ apiVersion: v2
name: banzaicloud-logging-operator-monitoring
description: Monitor logging-operator
type: application
version: 2.3.2
appVersion: 2.3.2
version: 2.3.3
appVersion: 2.3.3
icon: https://raw.githubusercontent.com/SomeBlackMagic/helm-charts/master/charts/banzaicloud-logging-operator-monitoring/icon.png
keywords:
- banzaicloud
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20 changes: 16 additions & 4 deletions .../banzaicloud-logging-operator-monitoring/templates/prometheus/prometheusrule-fluentd.yaml
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Expand Up @@ -42,7 +42,7 @@ spec:

{{- if .Values.prometheus.rule.alerts.fluentd.outputRetryWarning.enabled }}
- alert: FluentdOutputRetryWarning
expr: rate(fluentd_output_status_retry_count[{{ $.Values.prometheus.rule.alerts.fluentd.outputRetryWarning.rateTime }}]) > {{ $.Values.prometheus.rule.alerts.fluentd.outputRetryWarning.threshold }}
expr: rate(fluentd_output_status_retry_count{plugin_id!~"{{ $.Values.prometheus.rule.alerts.fluentd.excludePluginIdRegex }}"}[{{ $.Values.prometheus.rule.alerts.fluentd.outputRetryWarning.rateTime }}]) > {{ $.Values.prometheus.rule.alerts.fluentd.outputRetryWarning.threshold }}
for: {{ $.Values.prometheus.rule.alerts.fluentd.outputRetryWarning.for }}
labels:
severity: "{{ $.Values.prometheus.rule.alerts.fluentd.outputRetryWarning.severity }}"
Expand All @@ -66,7 +66,13 @@ spec:
{{- if $.Values.prometheus.rule.alerts.fluentd.highErrorRatio.enabled }}
- alert: FluentdHighErrorRatio
expr: |
sum by (type, plugin_id)(rate(fluentd_output_status_num_errors[{{ $.Values.prometheus.rule.alerts.fluentd.highErrorRatio.rateTime }}])) / sum by (type, plugin_id)(rate(fluentd_output_status_emit_count[{{ $.Values.prometheus.rule.alerts.fluentd.highErrorRatio.rateTime }}])) > {{ $.Values.prometheus.rule.alerts.fluentd.highErrorRatio.threshold }}
(
sum by (type, plugin_id)(rate(fluentd_output_status_num_errors{plugin_id!~"{{ $.Values.prometheus.rule.alerts.fluentd.excludePluginIdRegex }}"}[{{ $.Values.prometheus.rule.alerts.fluentd.highErrorRatio.rateTime }}]))
/
sum by (type, plugin_id)(rate(fluentd_output_status_emit_count{plugin_id!~"{{ $.Values.prometheus.rule.alerts.fluentd.excludePluginIdRegex }}"}[{{ $.Values.prometheus.rule.alerts.fluentd.highErrorRatio.rateTime }}]))
) > {{ $.Values.prometheus.rule.alerts.fluentd.highErrorRatio.threshold }}
and
sum by (type, plugin_id)(rate(fluentd_output_status_emit_count{plugin_id!~"{{ $.Values.prometheus.rule.alerts.fluentd.excludePluginIdRegex }}"}[{{ $.Values.prometheus.rule.alerts.fluentd.highErrorRatio.rateTime }}])) > 0
for: {{ $.Values.prometheus.rule.alerts.fluentd.highErrorRatio.for }}
labels:
severity: "{{ $.Values.prometheus.rule.alerts.fluentd.highErrorRatio.severity }}"
Expand All @@ -78,7 +84,13 @@ spec:
{{- if $.Values.prometheus.rule.alerts.fluentd.highRetryRatio.enabled }}
- alert: FluentdHighRetryRatio
expr: |
sum by (type, plugin_id)(rate(fluentd_output_status_retry_count[{{ $.Values.prometheus.rule.alerts.fluentd.highRetryRatio.rateTime }}])) / sum by (type, plugin_id)(rate(fluentd_output_status_emit_count[{{ $.Values.prometheus.rule.alerts.fluentd.highRetryRatio.rateTime }}])) > {{ $.Values.prometheus.rule.alerts.fluentd.highRetryRatio.threshold }}
(
sum by (type, plugin_id)(rate(fluentd_output_status_retry_count{plugin_id!~"{{ $.Values.prometheus.rule.alerts.fluentd.excludePluginIdRegex }}"}[{{ $.Values.prometheus.rule.alerts.fluentd.highRetryRatio.rateTime }}]))
/
sum by (type, plugin_id)(rate(fluentd_output_status_emit_count{plugin_id!~"{{ $.Values.prometheus.rule.alerts.fluentd.excludePluginIdRegex }}"}[{{ $.Values.prometheus.rule.alerts.fluentd.highRetryRatio.rateTime }}]))
) > {{ $.Values.prometheus.rule.alerts.fluentd.highRetryRatio.threshold }}
and
sum by (type, plugin_id)(rate(fluentd_output_status_emit_count{plugin_id!~"{{ $.Values.prometheus.rule.alerts.fluentd.excludePluginIdRegex }}"}[{{ $.Values.prometheus.rule.alerts.fluentd.highRetryRatio.rateTime }}])) > 0
for: {{ $.Values.prometheus.rule.alerts.fluentd.highRetryRatio.for }}
labels:
severity: "{{ $.Values.prometheus.rule.alerts.fluentd.highRetryRatio.severity }}"
Expand All @@ -90,7 +102,7 @@ spec:

{{- if $.Values.prometheus.rule.alerts.fluentd.outputRetryErrors.enabled }}
- alert: FluentdOutputRetryErrors
expr: rate(fluentd_output_status_num_errors[{{ $.Values.prometheus.rule.alerts.fluentd.outputRetryErrors.rateTime }}]) > {{ $.Values.prometheus.rule.alerts.fluentd.outputRetryErrors.threshold }}
expr: rate(fluentd_output_status_num_errors{plugin_id!~"{{ $.Values.prometheus.rule.alerts.fluentd.excludePluginIdRegex }}"}[{{ $.Values.prometheus.rule.alerts.fluentd.outputRetryErrors.rateTime }}]) > {{ $.Values.prometheus.rule.alerts.fluentd.outputRetryErrors.threshold }}
for: {{ $.Values.prometheus.rule.alerts.fluentd.outputRetryErrors.for }}
labels:
severity: "{{ $.Values.prometheus.rule.alerts.fluentd.outputRetryErrors.severity }}"
Expand Down
3 changes: 3 additions & 0 deletions charts/banzaicloud-logging-operator-monitoring/values.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,9 @@ prometheus:


fluentd:
#Regex to exclude internal Fluentd plugins from alerts
excludePluginIdRegex: "main.*"

serviceDown:
enabled: true
severity: critical
Expand Down
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