Hashicorp Configuration Language: Difference between revisions
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This is also an expression | This is also an [[#Interpolation_Expression|interpolation expression]], prefixed with “var.” | ||
Variables can be assigned in multiples way, and this is the descending order of precedence: | Variables can be assigned in multiples way, and this is the descending order of precedence: | ||
* command-line flags (-var = ‘region=something’) | |||
* from a file (.tfvars, -var-file=…) terraform.tfvars or *.auto.tfvars in the current directory are automatically loaded. Multiple -var-file can be used. | |||
* From environment variables: TF_VAR_name. This can only be used for string variables. | |||
* UI Input | |||
* Variable defaults (“default” keyword). | |||
Lists | ==Lists== | ||
{{External|https://learn.hashicorp.com/terraform/getting-started/variables#lists}} | |||
==Maps== | |||
{{External|https://learn.hashicorp.com/terraform/getting-started/variables#maps}} | |||
Maps | |||
https://learn.hashicorp.com/terraform/getting-started/variables#maps | |||
=Output Variable= | =Output Variable= | ||
Revision as of 23:08, 13 November 2019
External
Internal
Overview
Block
Interpolation Expression
Input Variable
variable "region" {
default = "us-east-1"
}
To use the variable:
region= var.region
This is also an interpolation expression, prefixed with “var.”
Variables can be assigned in multiples way, and this is the descending order of precedence:
- command-line flags (-var = ‘region=something’)
- from a file (.tfvars, -var-file=…) terraform.tfvars or *.auto.tfvars in the current directory are automatically loaded. Multiple -var-file can be used.
- From environment variables: TF_VAR_name. This can only be used for string variables.
- UI Input
- Variable defaults (“default” keyword).