Terraform for-each z listą obiektów

Nov 20 2020

Mam następującą zmienną w pliku variable.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"]
    }]
}

W moim pliku main.tf chciałbym zapętlić tę listę. Mam następujący kod w pliku main.tf:

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
  }
}

Zatem końcowy rezultat powinien być taki, że 2 dzierżawców zostanie utworzonych z atrybutami określonymi w pliku zmiennych. Tak więc tenant1 będzie miał 2 site_associations, a tenant2 będzie miał jedno skojarzenie po utworzeniu.

Wynik powinien być:

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

i

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

Próbowałem następujących rzeczy:

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
  }
}

Działa to dla osób name, dnamea descjednak nie iteracyjne nad zmienną strony (co jest lista). Powoduje to wyświetlenie komunikatu o błędzie:

each.value.site to lista łańcuchów zawierających 1 element Niewłaściwa wartość atrybutu „site_id”: wymagany jest ciąg.

Próbowałem rozwiązać w następujący sposób:

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]
  }
}

ale to również daje:

each.value.site to lista łańcuchów z 2 elementami Niewłaściwa wartość atrybutu „site_id”: wymagany jest ciąg.

Odpowiedzi

2 ElijahRoberts Nov 20 2020 at 20:48

To, czego szukasz, to blok dynamiczny: https://www.terraform.io/docs/configuration/expressions.html#dynamic-blocks

Oryginalny:

site_associations {
    site_id =  each.value.site
}

Dynamiczny:

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

dynamicBlok pozwala utworzyć kolejną for_eachpętlę nad each.value.site.

Uwaga: do wartości wewnątrz bloku dynamicznego odwołuje się nazwa bloku site_associations.value

Cały 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
    }
    }

}

Planowanie wyników:


  # 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.