Terraform for-each 包含对象列表

Question

我在 Variables.tf 文件中有以下变量：

variable tenants {
  description = "Map of project names to configuration."
  type = list(object({
    name  = string
    dname = string
    desc  = string
    site  = list(string)
  }))
  default = [{
      name  = "Tenant-1",
      dname = "Tenant-1",
      desc  = "Test Tenant 1",
      site  = ["site1", "site2"]
    },
    {
      name  = "Tenant-2",
      dname = "Tenant-2",
      desc  = "Test Tenant 2",
      site  = ["site1"]
    }]
}

在我的 main.tf 文件中，我想循环遍历这个列表。我在 main.tf 文件中有以下代码：

resource "mso_tenant" "restenant" {
  for_each = {for i, v in var.tenants:  i => v}
    name         = each.value.name
    display_name = each.value.dname
    description  = each.value.desc
    site_associations {
      site_id =  each.value.site
  }
}

因此，最终结果应该是使用变量文件中指定的属性创建 2 个租户。因此，一旦创建，tenant1 将有 2 个 site_associations，tenant2 将有 1 个关联。

结果应该是：

name         = "Tenant-1"
display_name = "Tenant-1"
description  = "Test Tenant 1"
site_associations {
  site_id = site1
  site_id = site2
}

和

name         = "Tenant-2"
display_name = "Tenant-2"
description  = "Test Tenant 2"
site_associations {
   site_id = site1
}

我尝试了以下方法：

resource "mso_tenant" "restenant" {
  for_each = {for i, v in var.tenants:  i => v}
    name         = each.value.name
    display_name = each.value.dname
    description  = each.value.desc
    site_associations {
      site_id =  each.value.site
  }
}

这适用于name，dname但desc它不会迭代站点变量（这是一个列表）。这会导致错误消息：

each.value.site 是具有 1 个元素的字符串列表，属性“site_id”的值不合适：需要字符串。

尝试解决如下：

resource "mso_tenant" "restenant" {
  for_each = {for i, v in var.tenants:  i => v}
    
    name         = each.value.name
    display_name = each.value.dname
    description  = each.value.desc
    site_associations {
      site_id = [for site in each.value.site: site]
  }
}

但这也给出了：

each.value.site 是包含 2 个元素的字符串列表，属性“site_id”的值不合适：需要字符串。

Answer 1

您正在寻找的是动态块：https://www.terraform.io/docs/configuration/expressions.html#dynamic-blocks

原来的：

site_associations {
    site_id =  each.value.site
}

动态的：

dynamic "site_associations"{
    for_each = each.value.site
    content {
        site_id = site_associations.value
    }
}

该dynamic块允许您for_each在each.value.site.

注意：动态块内的值是使用块名称引用的site_associations.value

整个main.tf：

variable tenants {
  description = "Map of project names to configuration."
  type = list(object({
    name  = string
    dname = string
    desc  = string
    site  = list(string)
  }))
  default = [{
      name  = "Tenant-1",
      dname = "Tenant-1",
      desc  = "Test Tenant 1",
      site  = ["site1", "site2"]
    },
    {
      name  = "Tenant-2",
      dname = "Tenant-2",
      desc  = "Test Tenant 2",
      site  = ["site1"]
    }]
}

resource "mso_tenant" "restenant" {
  for_each = {for i, v in var.tenants:  i => v}
    name         = each.value.name
    display_name = each.value.dname
    description  = each.value.desc
    dynamic "site_associations"{
    for_each = each.value.site
    content {
      site_id = site_associations.value
    }
    }

}

计划输出：

  # mso_tenant.restenant["0"] will be created
  + resource "mso_tenant" "restenant" {
      + description  = "Test Tenant 1"
      + display_name = "Tenant-1"
      + id           = (known after apply)
      + name         = "Tenant-1"

      + site_associations {
          + aws_access_key_id         = (known after apply)
          + aws_account_id            = (known after apply)
          + aws_secret_key            = (known after apply)
          + azure_access_type         = (known after apply)
          + azure_active_directory_id = (known after apply)
          + azure_application_id      = (known after apply)
          + azure_client_secret       = (known after apply)
          + azure_subscription_id     = (known after apply)
          + is_aws_account_trusted    = (known after apply)
          + site_id                   = "site1"
          + vendor                    = (known after apply)
        }
      + site_associations {
          + aws_access_key_id         = (known after apply)
          + aws_account_id            = (known after apply)
          + aws_secret_key            = (known after apply)
          + azure_access_type         = (known after apply)
          + azure_active_directory_id = (known after apply)
          + azure_application_id      = (known after apply)
          + azure_client_secret       = (known after apply)
          + azure_subscription_id     = (known after apply)
          + is_aws_account_trusted    = (known after apply)
          + site_id                   = "site2"
          + vendor                    = (known after apply)
        }

      + user_associations {
          + user_id = (known after apply)
        }
    }

  # mso_tenant.restenant["1"] will be created
  + resource "mso_tenant" "restenant" {
      + description  = "Test Tenant 2"
      + display_name = "Tenant-2"
      + id           = (known after apply)
      + name         = "Tenant-2"

      + site_associations {
          + aws_access_key_id         = (known after apply)
          + aws_account_id            = (known after apply)
          + aws_secret_key            = (known after apply)
          + azure_access_type         = (known after apply)
          + azure_active_directory_id = (known after apply)
          + azure_application_id      = (known after apply)
          + azure_client_secret       = (known after apply)
          + azure_subscription_id     = (known after apply)
          + is_aws_account_trusted    = (known after apply)
          + site_id                   = "site1"
          + vendor                    = (known after apply)
        }

      + user_associations {
          + user_id = (known after apply)
        }
    }

Plan: 2 to add, 0 to change, 0 to destroy.