我有一个模板,可以通过range
迭代多次渲染,并且可以毫无问题地访问变量$.Release.Name
等外部变量。但是,当我包含模板时,无法使其正常工作:
{{ range $key, $val := $.Values.resources }}
...
annotations:
checksum/config: {{ include (print $.Template.BasePath "/secrets.yaml") . | sha256sum }}
{{ end }}
在secrets.yaml
中:
apiVersion: "v1"
kind: "Secret"
metadata:
name: {{ $.Release.Name }}-secrets
我收到此错误:
Error: render error in "botfront-project/templates/deployment.yaml": template: [filename] :19:28: executing [filename] at <include (print $.Template.BasePath "/secrets.yaml") .>: error calling include: template: .../secrets.yaml:4:19: executing ".../secrets.yaml" at <$.Release.Name>: nil pointer evaluating interface {}.Name
如何访问包含的模板中的变量?
答案 0 :(得分:7)
只需将.
替换为$
,以使用全局范围而不是您创建的本地范围。
示例:
{{- include "my-chart.labels" $ | nindent 4 }}
根据文档https://helm.sh/docs/chart_template_guide/control_structures/#modifying-scope-using-with:
我们可以使用$从父级访问对象Release.Name 范围。 开始执行模板时,$映射到根作用域 并且它在模板执行期间不会改变
使用range
,我们可以在循环内更改范围。实际上,{{- include "my-chart.labels" . | nindent 4 }}
会调用当前范围.
。
因此,如果您在掌舵文档中深入研究“范围”一词,最终您会找到以下部分:https://helm.sh/docs/chart_template_guide/variables/
在此示例中:
{{- range .Values.tlsSecrets }}
apiVersion: v1
kind: Secret
metadata:
name: {{ .name }}
labels:
# Many helm templates would use `.` below, but that will not work,
# however `$` will work here
app.kubernetes.io/name: {{ template "fullname" $ }}
# I cannot reference .Chart.Name, but I can do $.Chart.Name
helm.sh/chart: "{{ $.Chart.Name }}-{{ $.Chart.Version }}"
app.kubernetes.io/instance: "{{ $.Release.Name }}"
# Value from appVersion in Chart.yaml
app.kubernetes.io/version: "{{ $.Chart.AppVersion }}"
app.kubernetes.io/managed-by: "{{ $.Release.Service }}"
type: kubernetes.io/tls
data:
tls.crt: {{ .certificate }}
tls.key: {{ .key }}
---
{{- end }}