Helm _helpers.tpl:在其他模板定义中调用已定义的模板 [英] Helm _helpers.tpl: Calling defined templates in other template definitions
问题描述
Helm允许在Kubernetes的资源文件中使用转到模板.
Helm allows for the use of Go templating in resource files for Kubernetes.
名为_helpers.tpl
的文件通常用于使用以下语法定义Go模板助手:
A file named _helpers.tpl
is usually used to define Go template helpers with this syntax:
{{- define "yourFnName" -}}
{{- printf "%s-%s" .Values.name .Values.version | trunc 63 -}}
{{- end -}}
然后您可以像这样在*.yaml
资源文件中使用它:
Which you can then use in your *.yaml
resource files like so:
{{ template "yourFnName" . }}
问题
如何在其他帮助程序定义中使用定义的帮助程序?
The Question
How can I use the helpers I define, in other helper definitions?
例如,如果我有一个用于应用程序名称的助手,并想在定义入口主机名的助手的定义中使用该助手,该怎么办?
For example, what if I have a helper for the application name, and want to use that in the definition for a helper which determines the ingress host name?
我尝试了几种其他方式来调用其他定义中的帮助器.有了这个基本的辅助功能:
I have tried calling helpers in other definitions a couple different ways. Given this basic helper function:
{{- define "host" -}}
{{- printf "%.example.com" <Somehow get result of "name" helper here> -}}
{{- end -}}
我尝试了以下操作:
{{- printf "%.example.com" {{ template "name" . }} -}}
{{- printf "%.example.com" {{- template "name" . -}} -}}
{{- printf "%.example.com" ( template "name" . ) -}}
{{- printf "%.example.com" template "name" . -}}
# Separator
{{- $name := {{ template "environment" . }} -}}
{{- printf "%.example.com" $name -}}
# Separator
{{- $name := template "environment" . -}}
{{- printf "%.example.com" $name -}}
# Separator
{{- $name := environment -}}
{{- printf "%.example.com" $name -}}
是否有可能做到这一点?如果可以,怎么办?
Is it possible to even do this? If so, how?
推荐答案
您应使用嵌套模板定义.
在您的特定情况下是:
{{- define "host" -}}
{{ template "name" . }}.example.com
{{- end -}}
这篇关于Helm _helpers.tpl:在其他模板定义中调用已定义的模板的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!