Helm 图表标签和选择器

Question

我使用helm createHelm v3 命令创建了一个 helm 图表，它为我创建了标准模板。由于我是使用 Helm 的新手，所以我对使用选择器和标签感到有些困惑。

那么应该如何使用deployment.yaml和services.yaml之间的标签呢？

使用include-road-dashboard.labels命令已经执行与下面相同的操作，或者我需要单独指定标签，如下例命令所示。我的问题对于命令来说也是一样的{{ include "road-dashboard.selectorLabels" . }}。

更新模板

apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ include "road-dashboard.fullname" . }}
  labels:
    app.kubernetes.io/name: {{ include "road-dashboard.name" . }}
    helm.sh/chart: {{ include "road-dashboard.chart" . }}
    app.kubernetes.io/instance: {{ .Release.Name }}
    app.kubernetes.io/managed-by: {{ .Release.Service }}

---

Helm 标准模板

部署.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ include "road-dashboard.fullname" . }}
  labels:
    {{- include "road-dashboard.labels" . | nindent 4 }}
spec:
  replicas: {{ .Values.replicaCount }}
  selector:
    matchLabels:
      {{- include "road-dashboard.selectorLabels" . | nindent 6 }}
  template:
    metadata:
      labels:
        {{- include "road-dashboard.selectorLabels" . | nindent 8 }}
    spec:

服务.yaml

apiVersion: v1
kind: Service
metadata:
  name: {{ include "road-dashboard.fullname" . }}
  labels:
    {{- include "road-dashboard.labels" . | nindent 4 }}
spec:
  type: {{ .Values.service.type }}
  ports:
    - port: {{ .Values.service.port }}
      targetPort: http
      protocol: TCP
      name: http
  selector:
    {{- include "road-dashboard.selectorLabels" . | nindent 4 }}

-helpers.tpl

  {{/*
Common labels
*/}}
{{- define "road-dashboard.labels" -}}
helm.sh/chart: {{ include "road-dashboard.chart" . }}
{{ include "road-dashboard.selectorLabels" . }}
{{- if .Chart.AppVersion }}
app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
{{- end }}
app.kubernetes.io/managed-by: {{ .Release.Service }}
{{- end -}}

{{/*
Selector labels
*/}}
{{- define "road-dashboard.selectorLabels" -}}
app.kubernetes.io/name: {{ include "road-dashboard.name" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
{{- end -}}

Answer 1

您可以继续使用您在 中创建的资源helpers.tpl并使用部署/服务/任何资源，或者使用您在开始时发布的资源。

只是您的注释中helpers.tpl 缺少define "road-dashboard.labels"了app.kubernetes.io/name，app.kubernetes.io/instance您也应该添加到那里，否则选择器将无法工作

您还可以查看此文档以获取指南：https://github.com/helm/charts/blob/master/REVIEW_GUIDELINES.md#names-and-labels