Add namespace chart

charts/namespace/.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/namespace/Chart.yaml

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+apiVersion: v2
+name: namespace
+description: A Helm chart to manage Kubernetes namespace.
+home: https://github.com/tedilabs/helm-charts
+# icon:
+sources:
+- https://github.com/tedilabs/helm-charts
+type: application
+version: "0.1.0"
+appVersion: "0.1.0"
+kubeVersion: ">=1.23.0-0"
+keywords:
+- cluster
+maintainers:
+- name: Byungjin Park
+  email: posquit0.bj@gmail.com
+annotations:
+  "artifacthub.io/license": Apache-2.0
+  "artifacthub.io/links": |
+    - name: Chart Source
+      url: https://github.com/tedilabs/helm-charts

charts/namespace/templates/_helpers.tpl

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

charts/namespace/templates/limit-range.yaml

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+{{- if .Values.limitRange.enabled }}
+{{- $commonLabels := default (dict) .Values.commonLabels }}
+{{- $commonAnnotations := default (dict) .Values.commonAnnotations }}
+{{- $limitRangeLabels := default (dict) .Values.limitRange.labels }}
+{{- $limitRangeAnnotations := default (dict) .Values.limitRange.annotations }}
+{{- $labels := merge (dict) $commonLabels $limitRangeLabels }}
+{{- $annotations := merge (dict) $commonAnnotations $limitRangeAnnotations }}
+apiVersion: v1
+kind: LimitRange
+metadata:
+  name: {{ .Values.name | quote }}
+  namespace: {{ .Values.name | quote }}
+  {{- if $labels }}
+  labels:
+    {{- include "namespace.labels" . | nindent 4 }}
+    {{- range $key, $val := $labels }}
+      {{- $key | nindent 4 }}: {{ $val | quote }}
+    {{- end }}
+  {{- end }}
+  {{- if $annotations }}
+  annotations:
+    {{- range $key, $val := $annotations }}
+      {{- $key | nindent 4 }}: {{ $val | quote }}
+    {{- end }}
+  {{- end }}
+spec:
+  {{- with .Values.limitRange.limits }}
+  limits:
+    {{- toYaml . | nindent 2 }}
+  {{- end }}
+{{- end }}

charts/namespace/templates/namespace.yaml

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+{{- $commonLabels := default (dict) .Values.commonLabels }}
+{{- $commonAnnotations := default (dict) .Values.commonAnnotations }}
+{{- $namespaceLabels := default (dict) .Values.labels }}
+{{- $namespaceAnnotations := default (dict) .Values.annotations }}
+{{- $labels := merge (dict) $commonLabels $namespaceLabels }}
+{{- $annotations := merge (dict) $commonAnnotations $namespaceAnnotations }}
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: {{ required "A valid `.Values.name` is required." .Values.name | quote }}
+  {{- if $labels }}
+  labels:
+    {{- include "namespace.labels" . | nindent 4 }}
+    {{- range $key, $val := $labels }}
+      {{- $key | nindent 4 }}: {{ $val | quote }}
+    {{- end }}
+  {{- end }}
+  {{- if $annotations }}
+  annotations:
+    {{- range $key, $val := $annotations }}
+      {{- $key | nindent 4 }}: {{ $val | quote }}
+    {{- end }}
+  {{- end }}

charts/namespace/templates/resource-quotas.yaml

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+{{- if .Values.resourceQuotas }}
+{{- $root := . }}
+{{- $commonLabels := default (dict) .Values.commonLabels }}
+{{- $commonAnnotations := default (dict) .Values.commonAnnotations }}
+apiVersion: v1
+kind: List
+items:
+{{- range $quota := .Values.resourceQuotas }}
+{{- $resourceQuotaLabels := default (dict) $quota.labels }}
+{{- $resourceQuotaAnnotations := default (dict) $quota.annotations }}
+{{- $labels := merge (dict) $commonLabels $resourceQuotaLabels }}
+{{- $annotations := merge (dict) $commonAnnotations $resourceQuotaAnnotations }}
+- apiVersion: v1
+  kind: ResourceQuota
+  metadata:
+    name: {{ required "A valid `name` is required." $quota.name | quote }}
+    {{- if $labels }}
+    labels:
+      {{- include "namespace.labels" $root | nindent 6 }}
+      {{- range $key, $val := $labels }}
+        {{- $key | nindent 6 }}: {{ $val | quote }}
+      {{- end }}
+    {{- end }}
+    {{- if $annotations }}
+    annotations:
+      {{- range $key, $val := $annotations }}
+        {{- $key | nindent 6 }}: {{ $val | quote }}
+      {{- end }}
+    {{- end }}
+  spec:
+    hard:
+      {{- range $key, $val := $quota.hard }}
+        {{- $key | nindent 6 }}: {{ $val }}
+      {{- end }}
+    {{- if $quota.scopeSelector }}
+    scopeSelector:
+      {{- toYaml $quota.scopeSelector | nindent 6 }}
+    {{- end }}
+    {{- if $quota.scopes }}
+    scopes:
+      {{- toYaml $quota.scopes | nindent 6 }}
+    {{- end }}
+{{- end }}
+{{- end }}

charts/namespace/values.yaml

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+# Default values for namespace.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+name: default
+
+labels: {}
+annotations: {}
+
+commonLabels: {}
+commonAnnotations: {}
+
+limitRange:
+  enabled: false
+  limits: {}
+  # limits:
+  # - type: Container
+  # - type: Pod
+  # - type: PersistentVolumeClaim
+  #   min:
+  #     storage: 100Mi
+  #   max:
+  #     storage: 100Gi
+
+resourceQuotas: []
+# resourceQuota:
+# - name: object-count-quota
+#   hard:
+#     count/pods: 0
+#   scopeSelector:
+#     matchExpressions:
+#     - operator: In
+#       scopeName: PriorityClass
+#       values:
+#       - system-node-critical
+#       - system-cluster-critical