如何在Helm多子Chart中用对象数组配置依赖的condition字段

问题背景 #

你希望通过父Chart的condition字段控制子Chart的安装，当前设计了如下values.schema.yaml：

{
  "$schema": "https://json-schema.org/draft-07/schema#",
  "properties": {
    "global": {
      "type": "object",
      "properties": {
        "deploy": {
          "description": "Controls which subcharts (not) to deploy. Provide a separate values file to enable them.",
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "name": {
                "description": "Name of the subchart",
                "type": "string"
              },
              "enabled": {
                "description": "Whether to install the subchart or not",
                "type": "boolean"
              }
            }
          }
        }
      }
    }
  }
}

对应的父Chart values.yaml 配置示例：

global:
  deploy:
  - name: "subchart01"
    enabled: false
  - name: "subchart02"
    enabled: true

但无法在Chart.yaml的condition字段中通过数组匹配子Chart名称来引用对应的enabled值：

dependencies:
- name: subchart01
  version: 0.1.0
  repository: "file://charts/subchart01"
  condition: global.deploy. ??? .enabled

核心问题 #

Helm的condition字段仅支持固定YAML路径的布尔值引用，无法通过数组元素的name字段进行动态匹配取值，因此当前数组结构的global.deploy无法直接满足需求。

解决方案 #

方案一：调整为对象结构（推荐）

将global.deploy从数组改为对象，以子Chart名称作为对象的key，直接存储对应enabled状态，这样就能通过固定路径引用。

修改后的values.schema.yaml：

{
  "$schema": "https://json-schema.org/draft-07/schema#",
  "properties": {
    "global": {
      "type": "object",
      "properties": {
        "deploy": {
          "description": "Controls which subcharts (not) to deploy. Provide a separate values file to enable them.",
          "type": "object",
          "additionalProperties": {
            "type": "object",
            "properties": {
              "enabled": {
                "description": "Whether to install the subchart or not",
                "type": "boolean"
              }
            }
          }
        }
      }
    }
  }
}

对应的values.yaml配置：

global:
  deploy:
    subchart01:
      enabled: false
    subchart02:
      enabled: true

此时Chart.yaml的condition字段可直接写固定路径：

dependencies:
- name: subchart01
  version: 0.1.0
  repository: "file://charts/subchart01"
  condition: global.deploy.subchart01.enabled
- name: subchart02
  version: 0.1.0
  repository: "file://charts/subchart02"
  condition: global.deploy.subchart02.enabled

方案二：采用Helm常规模式（更简洁）

直接在父Chart的顶层values中为每个子Chart设置独立的enabled字段，这是Helm社区的常规做法，无需嵌套在global.deploy下：

修改后的values.schema.yaml：

{
  "$schema": "https://json-schema.org/draft-07/schema#",
  "properties": {
    "subchart01": {
      "type": "object",
      "properties": {
        "enabled": {
          "description": "Whether to install subchart01",
          "type": "boolean",
          "default": false
        }
      }
    },
    "subchart02": {
      "type": "object",
      "properties": {
        "enabled": {
          "description": "Whether to install subchart02",
          "type": "boolean",
          "default": false
        }
      }
    }
  }
}

对应的values.yaml：

subchart01:
  enabled: false
subchart02:
  enabled: true

Chart.yaml的condition配置更简洁：

dependencies:
- name: subchart01
  version: 0.1.0
  repository: "file://charts/subchart01"
  condition: subchart01.enabled
- name: subchart02
  version: 0.1.0
  repository: "file://charts/subchart02"
  condition: subchart02.enabled

内容的提问来源于stack exchange，提问作者BdN3504