Terraform Shell (Data)

This module provides a wrapper for running shell scripts as data sources (re-run on every plan/apply) and capturing the output. Unlike Terraform's standard External Data Source, this module supports:

• Environment variables
• Capturing stdout, stderr, and exitstatus of the command
• Built-in support for both Linux and Windows
• Optional Terraform failure when an error in the given command occurs

For a similar module that runs as a resource (only re-runs the command on resource re-create or on a change in a trigger), see this module on the Terraform Registry.

Usage

module "shell_data_hello" {
  source  = "Invicton-Labs/shell-data/external"
  command_unix         = "echo \"$TEXT - $MORETEXT\""
  command_windows = "Write-Host \"$env:TEXT - $env:MORETEXT\""
  working_dir     = path.module
  fail_on_error   = true
  environment = {
    TEXT     = "hello world"
    MORETEXT = "goodbye world"
  }
}
output "stdout" {
  value = module.shell-data-hello.stdout
}
output "stderr" {
  value = module.shell-data-hello.stderr
}
output "exitstatus" {
  value = module.shell-data-hello.exitstatus
}

Apply complete! Resources: 0 added, 0 changed, 0 destroyed.

Outputs:

exitstatus = 0
stderr = ""
stdout = "hello world - goodbye world"