Difference between revisions of "Terraform variables: variables.tf"

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{{Draft}}
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TOMERGE [[Terraform variables]]
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* https://www.terraform.io/docs/language/values/variables.html
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* https://learn.hashicorp.com/tutorials/terraform/aws-variables
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https://cloud.google.com/docs/terraform/best-practices-for-terraform#variables
  
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string
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number
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bool
  
* {{Terraform}}
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== Variable declaration ==
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Definition in <code>[[variables.tf]]</code>
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[[variable]] "YourVarName" {}
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variable "YourVarName" { default = "your_default_value" }
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variable "your_subnets" { default = ["subnet-0d68d399b6cf9c2b3", "subnet-055f2f0b4de211111"] }
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[[variable]] "YourVarName" {
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  default = "your_default_value"
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}
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variable "YourVarName" {
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  [[Terraform variable types|type]] = [[string]]
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  description = "Description of your variable"
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  default = "your_default_value"
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}
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== Variable usage ==
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Usage in any terraform file (<code>[[main.tf]]</code>), using <code>[[var.]]</code> prefix:
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<code>AnyFieldToAssingAValue = [[var.]]YourVarName</code>
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<code>[[AnyFieldToAssingAValue]] = "${var.YourVarName}-yourtext-here"</code>
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yourvar = "${aws_lb.your_lb_resource_name.dns_name}"
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== Errors ==
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* <code>[[Error: No value for required variable]]</code>
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* <code>[[Error: Reference to undeclared input variable]]</code>
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* <code>[[Error: Variables not allowed]]</code>
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== Related term ==
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* <code>[[main.tf]]</code>
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* <code>[[variable.tfvars]]</code>
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* <code>[[terraform.tfvars]]</code>
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* <code>[[terraform apply]] -var 'myvar=football'</code>
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* <code>[[terraform plan]]</code>
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* <code>[[local.]]</code>
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* <code>[[module.]]</code>
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* <code>[[data.]]</code>
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* <code>[[.name]]</code>
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* <code>[[.dns_name]]</code>
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* <code>[[.arn]]</code>
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* [[Terraform best practices]]
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* [[random_string.suffix.result]]
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* [[context.tf]]
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== See also ==
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* {{tf files}}
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* {{Terraform variables}}
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[[Category:Terraform]]

Latest revision as of 03:33, 11 July 2024

TOMERGE Terraform variables

https://cloud.google.com/docs/terraform/best-practices-for-terraform#variables

string
number
bool

Variable declaration[edit]

Definition in variables.tf

variable "YourVarName" {}
variable "YourVarName" { default = "your_default_value" }
variable "your_subnets" { default = ["subnet-0d68d399b6cf9c2b3", "subnet-055f2f0b4de211111"] }
variable "YourVarName" {
  default = "your_default_value"
}
variable "YourVarName" {
  type = string
  description = "Description of your variable"
  default = "your_default_value"
}

Variable usage[edit]

Usage in any terraform file (main.tf), using var. prefix:

AnyFieldToAssingAValue = var.YourVarName
AnyFieldToAssingAValue = "${var.YourVarName}-yourtext-here"
yourvar = "${aws_lb.your_lb_resource_name.dns_name}"

Errors[edit]

Related term[edit]

See also[edit]

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