feat: add prometheus-rules Chart

charts/prometheus-rules/.helmignore

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+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

charts/prometheus-rules/Chart.yaml

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+apiVersion: v2
+name: prometheus-rules
+description: A Helm chart for Prometheus Operator PrometheusRule custom resources
+type: application
+version: 0.0.1
+maintainers:
+  - name: 0xDones

charts/prometheus-rules/README.md

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+
+# prometheus-rules
+
+![Version: 0.0.1](https://img.shields.io/badge/Version-0.0.1-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square)
+
+A Helm chart for Prometheus Operator PrometheusRule custom resources
+
+## Values
+
+| Key | Type | Default | Description |
+|-----|------|---------|-------------|
+| defaultAlertLabels | object | `{}` |  |
+| spec.groups[0].name | string | `"./example.rules"` |  |
+| spec.groups[0].rules[0].alert | string | `"ExampleAlert"` |  |
+| spec.groups[0].rules[0].expr | string | `"Vector(1)"` |  |
+| spec.groups[0].rules[0].for | string | `"5m"` |  |
+| spec.groups[0].rules[0].labels.severity | string | `"warning"` |  |
+
+----------------------------------------------
+Autogenerated from chart metadata using [helm-docs v1.14.2](https://github.com/norwoodj/helm-docs/releases/v1.14.2)

charts/prometheus-rules/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "prometheus-rules.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "prometheus-rules.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "prometheus-rules.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "prometheus-rules.labels" -}}
+helm.sh/chart: {{ include "prometheus-rules.chart" . }}
+{{ include "prometheus-rules.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "prometheus-rules.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "prometheus-rules.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "prometheus-rules.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "prometheus-rules.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}
+
+{{- define "prometheus-rules.defaultAlertLabels" -}}
+{{ .Values.defaultAlertLabels | toYaml }}
+{{- end }}

charts/prometheus-rules/templates/prometheus-rules.yaml

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+---
+apiVersion: monitoring.coreos.com/v1
+kind: PrometheusRule
+metadata:
+  name: {{ include "prometheus-rules.fullname" . }}
+  labels:
+    {{- include "prometheus-rules.labels" . | nindent 4 }}
+spec:
+  groups:
+  {{- range .Values.spec.groups }}
+  - name: {{ .name }}
+    rules:
+    {{- range .rules }}
+    - expr: {{ .expr }}
+      {{- with .for }}
+      for: {{ . }}
+      {{- end }}
+      {{- with .alert }}
+      alert: {{ . }}
+      {{- end }}
+      {{- with .record }}
+      record: {{ . }}
+      {{- end }}
+      annotations: {{- .annotations | toYaml | nindent 8 }}
+      labels:
+        {{- $defaultLabels := $.Values.defaultAlertLabels | default (dict) }}
+        {{- $customLabels := .labels | default (dict) }}
+        {{- $labels := merge $defaultLabels $customLabels }}
+        {{- with $labels }}
+        {{- toYaml . | nindent 8 }}
+        {{- end }}
+    {{- end }}
+  {{- end }}

charts/prometheus-rules/values.yaml

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+defaultAlertLabels: {}
+
+spec:
+  groups:
+  - name: ./example.rules
+    rules:
+    - alert: ExampleAlert
+      expr: Vector(1)
+      for: 5m
+      labels:
+        severity: warning