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j2cfn-boiler

CloudFormation management pattern using Jinja2

Requirements

  • awscli and credentials
  • make
  • python (python3 recommended)

Directory structure

.
├── .cache                # put temporary files for diff
├── bin                   # put a python script to use jinja
├── dist                  # put files bundled by jinja
│   ├── ecr               # `privileged-access` and `ecr` are example dir
│   └── privileged-access
└── src                   # write cfn templates by yaml
    ├── ecr
    └── privileged-access

Usage

1. Setup

Install dependencies (cfn-lint, python-dotenv and jinja2).

make setup

2. Edit templates and bundle

At first, make a directory and edit template codes.

mkdir ./src/$YOUR_STACK_NAME
$EDITOR ./src/$YOUR_STACK_NAME/root.yaml.j2

Note: $YOUR_STACK_NAME used to call make, as the target argument.

Well, bundle that into one template which putting ./dist/$YOUR_STACK_NAME.

make bundle Target=privileged-access env=development

You can embedding variables by matching arguments at make bundle, with the template embedded variable of jinja.

3. Lint

Also you lint it by aws cloudformation validate-template and cfn-lint.

make lint Target=privileged-access

4. Execute

Create stack

make create/stack Target=privileged-access
make wait/stack-create Target=privileged-access

Create and apply your change set

make create/change-set Target=privileged-access
make wait/change-set-create Target=privileged-access
make exec/change-set Target=privileged-access
make wait/stack-update Target=privileged-access

Waiter failed

Get the notification from stderr when failed to create or update.

Waiter StackUpdateComplete failed: Waiter encountered a terminal failure state

Maintainer

@ktrysmt