舵-以编程方式覆盖子图表values.yaml [英] helm - programmatically override subchart values.yaml

问题描述

我正在写一个使用稳定/redis 图表作为子图表.

I'm writing a helm chart that uses the stable/redis chart as a subchart.

我需要覆盖图表中和Redis图表中用于两种微服务的存储类名称.

I need to override the storage class name used for both microservices within my chart, and within the redis chart.

我正在使用头盔2.12.3

I'm using helm 2.12.3

我希望能够像这样指定模板来指定redis.master.persistence.storageClass

I would like to be able to specify redis.master.persistence.storageClass in terms of a template, like so

storage:
  storageClasses:
    name: azurefile

redis:
  usePassword: false
  master:
    persistence:
      storageClass: {{ $.Values.storage.storageClasses.name }}

据我了解，values.yaml中不支持模板

Except, as I understand, templates aren't supported within values.yaml

由于这是一个公共图表，因此我无法按照

As this is a public chart, I'm not able to modify it to depend on a global value as described here in the documentation

我考虑在图表的其他位置使用{{ $.Values.redis.master.persistence.storageClass }}而不是{{ $.Values.storage.storageClasses.name }}，但这将:

I considered using {{ $.Values.redis.master.persistence.storageClass }} elsewhere in my chart rather than {{ $.Values.storage.storageClasses.name }}, but this would:

• 不掩盖我图表的依赖关系的复杂性
• 如果要添加另一个子图依赖项，则无法缩放

在我的values.yaml文件中，我有:

In my values.yaml file I have:

storage:
  storageClasses:
    name: azurefile

redis:
  master:
    persistence:
      storageClass: azurefile

我想在values.yaml中指定一个值，该值可以在图表部署时覆盖.

I would like to specify a single value in values.yaml that can be overwritten at chart deploy time.

例如像这样

helm install --set storage.storageClasses.name=foo mychart

而不是

helm install --set storage.storageClasses.name=foo --set redis.master.persistence.storageClass mychart

推荐答案

正如您正确提到的那样，掌舵值文件是纯Yaml文件，不能包含任何模板.对于您的用例，您还需要对价值文件使用模板系统，这基本上意味着您还在旅途中生成价值文件.我建议您看看 helmfile .这使您可以在多个图表和应用程序环境之间共享值文件.

As you correctly mentioned, helm value files are plain yaml files which cannot contain any templates. For your use case, you'd need to use a templating system for your values files also which basically means you are also generating your value files on the go. I'd suggest taking a look at helmfile. This lets you share values file across multiple charts and application environments.

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