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Terragurnt Support

Terragrunt is a thin wrapper that provides extra tools for keeping your configurations DRY, working with multiple Terraform modules, and managing remote state.

Failed to parse the output of Terragrunt​

#1972 #1541

By default, tfcmt can't parse the output of Terragrunt. This isn't a bug. The log of terragrunt includes the prefix timestamp STDOUT terraform:.

e.g.

09:32:46.963 STDOUT terraform: data.aws_caller_identity.current: Reading...
09:32:46.963 STDOUT terraform: module.cwlogs1.aws_cloudwatch_log_group.this: Refreshing state... [id=test-2]
09:32:47.088 STDOUT terraform:

Due to the prefix, tfcmt can't parse the output. You can suppress the preifx by the environment variable `TERRAGRUNT_LOG_DISABLE=true, then tfcmt can parse the output.

terragrunt run-all​

#843 #1923

Terragrunt supports deploying multiple Terraform modules in a single command by terragrunt run-all command, but tfcmt doesn't support the output.

❌ This doesn't work.

tfcmt plan -- terragrunt run-all plan

You can solve the issue by Terragrunt's --terragrunt-tfpath option.

  1. Create a wrapper script of terraform and make it executable
vi tfwrapper.sh
chmod a+x tfwrapper.sh

tfwrapper.sh

#!/bin/bash

set -euo pipefail

command=$1

base_dir=$(git rev-parse --show-toplevel) # Please fix if necessary
target=${PWD#"$base_dir"/}

if [ "$command" == "plan" ]; then
  tfcmt -var "target:${target}" plan -- terraform "$@"
elif [ "$command" == "apply" ]; then
  tfcmt -var "target:${target}" apply -- terraform "$@"
else
  terraform "$@"
fi
  1. Run terragrunt plan --all with --tf-path

Latest Terragrunt (>= 0.85.0)

terragrunt plan --all --tf-path "<absolute path of tfwrapper.sh>"

Old Terragrunt: (< 0.85.0)

terragrunt run-all plan --terragrunt-tfpath "<absolute path of tfwrapper.sh>"

Then the result of terraform plan is posted per module.