This is terraform-example-module
project provides all the scaffolding for a typical well-built Cloud Posse module. It's a template repository you can
use when creating new repositories.
This project is part of our comprehensive "SweetOps" approach towards DevOps.
It's 100% Open Source and licensed under the APACHE2.
We literally have hundreds of terraform modules that are Open Source and well-maintained. Check them out!
Security scanning is graciously provided by Bridgecrew. Bridgecrew is the leading fully hosted, cloud-native solution providing continuous Terraform security and compliance.
Usage
IMPORTANT: We do not pin modules to versions in our examples because of the difficulty of keeping the versions in the documentation in sync with the latest released versions. We highly recommend that in your code you pin the version to the exact version you are using so that your infrastructure remains stable, and update versions in a systematic way so that they do not catch you by surprise.
Also, because of a bug in the Terraform registry (hashicorp/terraform#21417), the registry shows many of our inputs as required when in fact they are optional. The table below correctly indicates which inputs are required.
For a complete example, see examples/complete.
For automated tests of the complete example using bats and Terratest (which tests and deploys the example on AWS), see test.
module "example" {
source = "https://github.com/cloudposse/terraform-example-module.git?ref=master"
example = "Hello world!"
}
Examples
Here is an example of using this module:
examples/complete
- complete example of using this module
Makefile Targets
Available targets:
help Help screen
help/all Display help for all targets
help/short This help short screen
lint Lint terraform code
Requirements
Name | Version |
---|---|
terraform | >= 0.13 |
local | >= 1.2 |
random | >= 2.2 |
Providers
Name | Version |
---|---|
random | >= 2.2 |
Inputs
Name | Description | Type | Default | Required |
---|---|---|---|---|
additional_tag_map | Additional tags for appending to tags_as_list_of_maps. Not added to tags . |
map(string) |
{} |
no |
attributes | Additional attributes (e.g. 1 ) |
list(string) |
[] |
no |
context | Single object for setting entire context at once. See description of individual variables for details. Leave string and numeric variables as null to use default value.Individual variable settings (non-null) override settings in context object, except for attributes, tags, and additional_tag_map, which are merged. |
any |
{ |
no |
delimiter | Delimiter to be used between namespace , environment , stage , name and attributes .Defaults to - (hyphen). Set to "" to use no delimiter at all. |
string |
null |
no |
enabled | Set to false to prevent the module from creating any resources | bool |
null |
no |
environment | Environment, e.g. 'uw2', 'us-west-2', OR 'prod', 'staging', 'dev', 'UAT' | string |
null |
no |
example | Example variable | string |
"hello world" |
no |
id_length_limit | Limit id to this many characters (minimum 6).Set to 0 for unlimited length.Set to null for default, which is 0 .Does not affect id_full . |
number |
null |
no |
label_key_case | The letter case of label keys (tag names) (i.e. name , namespace , environment , stage , attributes ) to use in tags .Possible values: lower , title , upper .Default value: title . |
string |
null |
no |
label_order | The naming order of the id output and Name tag. Defaults to ["namespace", "environment", "stage", "name", "attributes"]. You can omit any of the 5 elements, but at least one must be present. |
list(string) |
null |
no |
label_value_case | The letter case of output label values (also used in tags and id ).Possible values: lower , title , upper and none (no transformation).Default value: lower . |
string |
null |
no |
name | Solution name, e.g. 'app' or 'jenkins' | string |
null |
no |
namespace | Namespace, which could be your organization name or abbreviation, e.g. 'eg' or 'cp' | string |
null |
no |
regex_replace_chars | Regex to replace chars with empty string in namespace , environment , stage and name .If not set, "/[^a-zA-Z0-9-]/" is used to remove all characters other than hyphens, letters and digits. |
string |
null |
no |
stage | Stage, e.g. 'prod', 'staging', 'dev', OR 'source', 'build', 'test', 'deploy', 'release' | string |
null |
no |
tags | Additional tags (e.g. map('BusinessUnit','XYZ') |
map(string) |
{} |
no |
Outputs
Name | Description |
---|---|
example | Example output |
id | ID of the created example |
random | Stable random number for this example |
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Related Projects
Check out these related projects.
- terraform-null-label - Terraform module designed to generate consistent names and tags for resources. Use terraform-null-label to implement a strict naming convention.
References
For additional context, refer to some of these links.
- Terraform Standard Module Structure - HashiCorp's standard module structure is a file and directory layout we recommend for reusable modules distributed in separate repositories.
- Terraform Module Requirements - HashiCorp's guidance on all the requirements for publishing a module. Meeting the requirements for publishing a module is extremely easy.
- Terraform
random_integer
Resource - The resource random_integer generates random values from a given range, described by the min and max attributes of a given resource. - Terraform Version Pinning - The required_version setting can be used to constrain which versions of the Terraform CLI can be used with your configuration
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Copyrights
Copyright © 2020-2021 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
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regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
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Contributors
Erik Osterman |
---|