Awesome
tfmask
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Command line utility to mask sensitive output from a transform plan
or terraform apply
.
This project is part of our comprehensive "SweetOps" approach towards DevOps. <img align="right" title="Share via Email" src="https://docs.cloudposse.com/images/ionicons/ios-email-outline-2.0.1-16x16-999999.svg"/> <img align="right" title="Share on Google+" src="https://docs.cloudposse.com/images/ionicons/social-googleplus-outline-2.0.1-16x16-999999.svg" /> <img align="right" title="Share on Facebook" src="https://docs.cloudposse.com/images/ionicons/social-facebook-outline-2.0.1-16x16-999999.svg" /> <img align="right" title="Share on Reddit" src="https://docs.cloudposse.com/images/ionicons/social-reddit-outline-2.0.1-16x16-999999.svg" /> <img align="right" title="Share on LinkedIn" src="https://docs.cloudposse.com/images/ionicons/social-linkedin-outline-2.0.1-16x16-999999.svg" /> <img align="right" title="Share on Twitter" src="https://docs.cloudposse.com/images/ionicons/social-twitter-outline-2.0.1-16x16-999999.svg" />
It's 100% Open Source and licensed under the APACHE2.
Screenshots
Example of masking output from a
terraform plan
execution
Example of masking output from a
terraform apply
execution
Introduction
If you answer "yes" to any of these questions, then look no further!
- Have you ever wished you could easily filter sensitive output from a
terraform plan
orterraform apply
? - Do you use terraform providers that leak sensitive data to
stdout
(e.g.terraform-github-provider
)?
Yes? Great! Then this utility is for you.
The tfmask
utility will replace the "old value" and the "new value" with the masking character (e.g. *
).
NOTE: tfmask
will preserve the name of the nodes in the graph
Usage
NOTE: The utility supports a number of configuration settings which can be passed via environment variables.
Environment Variable | Description | Default |
---|---|---|
TFMASK_CHAR | Character used to mask all output | * |
TFMASK_VALUES_REGEX | Regular expression used to match values | [see code] |
TFMASK_RESOURCES_REGEX | Regular expression used to match resources | [see code] |
IMPORTANT: Pass -no-color
to terraform plan
and terraform apply
for proper parsing
The basic usage looks like this. We're going to run terraform plan
and filter it through tfmask
:
terraform plan -no-color | tfmask
Direnv
You can use tfmask
with direnv
to set the defaults.
Example .envrc
:
# Export terraform environment
export TFMASK_CHAR="#"
export TFMASK_VALUES_REGEX="(?i)^.*[^a-zA-Z](oauth|secret|token|password|key|result|id).*$"
<details>
<summary>Example of Masked Output</summary>
Terraform will perform the following actions:
~ module.atlantis.module.web_app.module.ecs_codepipeline.aws_codepipeline.source_build_deploy
stage.0.action.0.configuration.%: "4" => "5"
stage.0.action.0.configuration.OAuthToken: "" => "*******************************************"
Plan: 0 to add, 1 to change, 0 to destroy.
</details>
Examples
Compiling the Binary
make go/build
Use with Terraform Plan
Many terraform providers unintentionally leak sensitive information when running terraform plan
. This is very bad.
An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
~ update in-place
Terraform will perform the following actions:
~ module.example.aws_codepipeline.source_build_deploy
stage.0.action.0.configuration.%: "4" => "5"
stage.0.action.0.configuration.OAuthToken: "" => "efba05dbe9b94ba18ae3737a6d6de16eefba05dbe9b9"
Plan: 0 to add, 1 to change, 0 to destroy.
NOTE: This OAuthToken
is just an example and not a valid token.
Using tfmask
, the output from terraform plan
will be masked like this:
terraform plan -no-color | tfmask
<details>
<summary>Example of Masked Terraform Plan Output</summary>
An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
~ update in-place
Terraform will perform the following actions:
~ module.example.aws_codepipeline.source_build_deploy
stage.0.action.0.configuration.%: "4" => "5"
stage.0.action.0.configuration.OAuthToken: "" => ********************************************"
Plan: 0 to add, 1 to change, 0 to destroy.
</details>
Use with Terraform Apply
Many terraform providers unintentionally leak sensitive information when running terraform apply
. This is very bad.
terraform apply
module.example.aws_codepipeline.source_build_deploy: Modifying... (ID: example-codepipeline)
stage.0.action.0.configuration.%: "4" => "5"
stage.0.action.0.configuration.OAuthToken: "" => "efba05dbe9b94ba18ae3737a6d6de16eefba05dbe9b9"
module.example.aws_codepipeline.source_build_deploy: Modifications complete after 1s (ID: example-codepipeline)
Apply complete! Resources: 0 added, 1 changed, 0 destroyed.
NOTE: This OAuthToken
is just an example and not a valid token.
Using tfmask
, the output from terraform apply
will be masked like this:
terraform apply -no-color | tfmask
<details>
<summary>Example of Masked Terraform Apply Output</summary>
module.example.aws_codepipeline.source_build_deploy: Modifying... (ID: example-codepipeline)
stage.0.action.0.configuration.%: "4" => "5"
stage.0.action.0.configuration.OAuthToken: "" => "********************************************"
module.example.aws_codepipeline.source_build_deploy: Modifications complete after 1s (ID: example-codepipeline)
Apply complete! Resources: 0 added, 1 changed, 0 destroyed.
</details>
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Related Projects
Check out these related projects.
- Packages - Cloud Posse installer and distribution of native apps
- build-harness - Collection of Makefiles to facilitate building Golang projects, Dockerfiles, Helm charts, and more
- geodesic - Geodesic is the fastest way to get up and running with a rock solid, production grade cloud platform built on strictly Open Source tools.
- direnv - Unclutter your .profile with an environment switcher for the shell
- tfenv - Transform environment variables for use with Terraform (e.g.
HOSTNAME
⇨TF_VAR_hostname
)
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Bug Reports & Feature Requests
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Developing
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Copyright
Copyright © 2017-2020 Cloud Posse, LLC
License
See LICENSE for full details.
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
https://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
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KIND, either express or implied. See the License for the
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About
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