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https://github.com/choonchernlim/terragrunt-workspace-poc
A ruthless and opinionated way to provision GCP resources like cattle using Terragrunt with possibility to turn some cattle into pets if needed.
https://github.com/choonchernlim/terragrunt-workspace-poc
infrastructure-as-code terraform terragrunt
Last synced: about 1 month ago
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A ruthless and opinionated way to provision GCP resources like cattle using Terragrunt with possibility to turn some cattle into pets if needed.
- Host: GitHub
- URL: https://github.com/choonchernlim/terragrunt-workspace-poc
- Owner: choonchernlim
- License: mit
- Created: 2022-11-21T18:00:30.000Z (about 2 years ago)
- Default Branch: main
- Last Pushed: 2023-03-21T13:28:13.000Z (almost 2 years ago)
- Last Synced: 2024-11-06T00:40:55.245Z (3 months ago)
- Topics: infrastructure-as-code, terraform, terragrunt
- Language: HCL
- Homepage:
- Size: 15.6 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Terragrunt Workspace POC
A ruthless and opinionated way to provision GCP resources like cattle using Terragrunt with possibility
to turn some cattle into pets if needed.
## Git Repo Structure
```text
.
├── backend.hcl # Backend plumbing (remote state, etc).
├── terragrunt.hcl # Root HCL where all child modules use `[email protected]` module.
├── tfvars # Env-based variables.
│ └── dev.tfvars
└── workspaces # Contains Terragrunt modules.
├── customer-1
│ └── folder
│ └── terragrunt.hcl # Uses root HCL.
├── customer-2
│ └── folder
│ └── terragrunt.hcl # Overrides root HCL and use `[email protected]` module.
└── customer-3
├── extra
│ ├── main.tf
│ ├── terragrunt.hcl # Requires output from sibling module in custom TF code.
│ └── variables.tf
└── folder
└── terragrunt.hcl # Uses root HCL.
```
## Getting Started
If service account is not used, use your credential instead:
```shell
gcloud auth login && gcloud auth application-default login
```
Expose the following environment variables:
```shell
# Load tfvars/dev.tfvars
export ENVIRONMENT=dev
# For remote state configuration, replace the values accordingly
export TF_BACKEND_PROJECT=[GCP_PROJECT_ID]
export TF_BACKEND_BUCKET=[GCP_BUCKET_NAME]
export TF_BACKEND_LOCATION=[GCP_BUCKET_LOCATION]
```
### Plan
Run the following command at root dir:
```shell
terragrunt run-all plan
```
### Apply
Run the following command at root dir:
```shell
terragrunt run-all apply
```
### Destroy
#### Using `destroy`
Run the following command at root dir:
```shell
terragrunt run-all destroy
```
This is a preferred approach as it will destroy the modules in the right order if there are dependencies between them.
#### Using `apply`
Go to a child `terragrunt.hcl` to be destroyed.
Disable the source inheritance from root `terragrunt.hcl` by changing the following...
```hcl
include "root" {
path = find_in_parent_folders()
}
include "backend" {
path = find_in_parent_folders("backend.hcl")
}
inputs = {
folder_name = "folder-1"
}
```
... with...
```hcl
include "backend" {
path = find_in_parent_folders("backend.hcl")
}
terraform {
source = ".//."
}
```
Then, run these commands:
```shell
terragrunt run-all apply
```