Add a management helm chart

charts/helmrelease/.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/helmrelease/Chart.yaml

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+apiVersion: v2
+name: helmrelease
+description: A Helm chart for Kubernetes
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "1.16.0"

charts/helmrelease/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "helmrelease.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 "helmrelease.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 "helmrelease.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "helmrelease.labels" -}}
+helm.sh/chart: {{ include "helmrelease.chart" . }}
+{{ include "helmrelease.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "helmrelease.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "helmrelease.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "helmrelease.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "helmrelease.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

charts/helmrelease/templates/helmrelease.yaml

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+{{- if .Values.config.plain }}
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "helmrelease.fullname" . }}-config
+  labels:
+    {{- include "helmrelease.labels" $ | nindent 4 }}
+data: 
+  config: |-
+    {{- .Values.config | toYaml | nindent 6 }}
+{{- end }}
+
+{{- if .Values.config.sensitive }}
+---
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ include "helmrelease.fullname" . }}-config
+  labels:
+    {{- include "helmrelease.labels" $ | nindent 4 }}
+stringData: 
+  config: |-
+    {{- .Values.config | toYaml | nindent 6 }}
+{{- end }}
+
+---
+apiVersion: source.toolkit.fluxcd.io/v1beta2
+kind: HelmRepository
+metadata:
+  name: {{ include "helmrelease.fullname" . }}-repo
+  labels:
+    {{- include "helmrelease.labels" $ | nindent 4 }}
+spec:
+  interval: 5m
+  url: {{ .Values.helm.repo }}
+---
+apiVersion: helm.toolkit.fluxcd.io/v2beta2
+kind: HelmRelease
+metadata:
+  name: {{ include "helmrelease.fullname" . }}
+  labels:
+    {{- include "helmrelease.labels" $ | nindent 4 }}
+spec:
+  interval: 10m
+  timeout: 5m
+  chart:
+    spec:
+      chart: {{ .Values.helm.chart.name }}
+      version: {{ .Values.helm.chart.version }}
+      sourceRef:
+        kind: HelmRepository
+        name: {{ include "helmrelease.fullname" . }}-repo
+      interval: 5m
+  releaseName: {{ .Values.helm.release }}
+  install:
+    remediation:
+      retries: 3
+  upgrade:
+    remediation:
+      retries: 3
+  test:
+    enable: true
+  driftDetection:
+    mode: enabled
+  {{- if or .Values.config.plain .Values.config.sensitive }}
+  valuesFrom:
+    {{- if .Values.config.plain }}
+    - kind: ConfigMap
+      name: {{ include "helmrelease.fullname" . }}-config
+      valuesKey: config
+    {{- end }}
+    {{- if .Values.config.sensitive }}
+    - kind: Secret
+      name: {{ include "helmrelease.fullname" . }}-config
+      valuesKey: config
+    {{- end }}
+  {{- end }}

charts/helmrelease/values.yaml

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+helm: 
+  release: test
+  chart:
+    name: test
+    version: test
+  repo: test
+config:
+  plain:
+    test: test
+    test2: test2
+  secret:
+    test: test
+    test2: test2