Skip to main content

Terrafom

Versions Pinning​

version = "~> 1.0" allows only the rightmost version component to increment.

For example, to allow new patch releases within a specific minor release, use the full version number: ~> 1.0.4 will allow installation of 1.0.5 and 1.0.10 but not 1.1.0. This is usually called the pessimistic constraint operator (пессимистический оператор ограничения).

terraform {
  required_providers {
    mycloud = {
      source  = "mycorp/mycloud"
      version = "~> 1.0"
    }
  }
}
  • != meaning “exactly not equal to”
  • = meaning “exactly equal to”
  • < meaning “less than”
terraform {
  required_version = ">= 0.12"
}

Ternary Operators​

In this case, the value of the “example_variable” variable will be “value_if_true” if the “condition_met” variable is true, and “value_if_false” otherwise.

variable "example_variable" {
  default = var.condition_met ? "value_if_true" : "value_if_false"
}
locals {
  files       = { for i in fileset("${path.module}/alert_rules/", "*.y*ml") : replace(basename(i), "/\\.y[a]?ml$/", "") => i }
  decoded_contents = [for file in local.files : try(yamldecode(file("${path.module}/rules/${file}")), [])]
}

Functions​

flatten​

Парсинг файлов

lookup​

yamldecode​

coalesce​

Принимает любое количество аргументов и возвращает первый из них, который не является нулевым значением или пустой строкой.

> coalesce("a", "b")
a
> coalesce("", "b")
b
> coalesce(1,2)
1

CMD's​

terraform validate​

Убедитесь, что файлы конфигурации Terraform синтаксически верны.

terraform validate