https://github.com/daviddanso/terraform_aws
Infrastructure provisioning with Terraform on AWS
https://github.com/daviddanso/terraform_aws
terraform-aws
Last synced: 4 months ago
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Infrastructure provisioning with Terraform on AWS
- Host: GitHub
- URL: https://github.com/daviddanso/terraform_aws
- Owner: DavidDanso
- Created: 2024-03-22T15:52:17.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2024-04-21T21:25:17.000Z (about 1 year ago)
- Last Synced: 2025-01-11T15:23:29.165Z (6 months ago)
- Topics: terraform-aws
- Language: HCL
- Homepage:
- Size: 35.2 KB
- Stars: 1
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
## Terraform for AWS Cloud Architecture Deployment
This reademe outlines the Terraform commands used to deploy an AWS cloud architecture and provides brief explanations for each command.
**Installation and Version Check**
* **`brew install terraform` (macOS only):** Installs Terraform using Homebrew package manager.
```
brew install terraform
```
* **`terraform --version` or `terraform version`:** Verifies the installed Terraform version.
```
terraform --version
```
**Initialization and Configuration**
* **`terraform init`:** Initializes the Terraform workspace, downloading required plugins and initializing the state file.
```
terraform init
```
**Environment Variables**
* **(Security Warning):** Setting environment variables for AWS access credentials (like `AWS_ACCESS_KEY_ID` and `AWS_SECRET_ACCESS_KEY`) in the README is discouraged. It exposes sensitive information. Consider using a credential provider instead.
**Planning and Applying Changes**
* **`terraform plan`:** Generates an execution plan for infrastructure changes based on the current configuration.
```
terraform plan
```
* **`terraform apply -refresh=false`:** Applies the planned infrastructure changes to the cloud provider. `-refresh=false` skips refreshing remote state data before applying.
```
terraform apply -refresh=false
```
* **`terraform plan -out iam.tfplan`:** Creates an execution plan for infrastructure changes and saves it as `iam.tfplan`.
```
terraform plan -out iam.tfplan
```
* **`terraform apply "iam.tfplan"`:** Applies the saved execution plan from `iam.tfplan`.
```
terraform apply "iam.tfplan"
```
* **`terraform apply -target=“aws_iam_user.my_iam_user”`:** Applies changes only to the specific resource `aws_iam_user.my_iam_user`.
```
terraform apply -target="aws_iam_user.my_iam_user"
```
**Destruction and Validation**
* **`terraform destroy`:** Destroys the provisioned infrastructure based on the current configuration. Use with caution!
```
terraform destroy
```
* **`terraform validate`:** Validates the Terraform configuration syntax without applying changes.
```
terraform validate
```
**Formatting and Viewing State**
* **`terraform fmt`:** Formats Terraform configuration files for readability.
```
terraform fmt
```
* **`terraform show`:** Displays information about the provisioned infrastructure resources.
```
terraform show
```
**Variable Usage**
* The following example demonstrates setting a Terraform variable directly in the command:
```
terraform plan -refresh=false -var="iam_user_name_prefix=VALUE_FROM_COMMAND_LINE"
```
**Target-based Application**
* **`terraform apply -target=aws_default_vpc.default`:** Applies changes only to the `aws_default_vpc.default` resource.
```
terraform apply -target=aws_default_vpc.default
```
Similar commands are used to apply changes to specific data sources and resources based on their names or types.
**Workspaces**
* **`terraform workspace show`:** Displays the currently selected Terraform workspace.
```
terraform workspace show
```
* **`terraform workspace new prod-env`:** Creates a new workspace named `prod-env`.
```
terraform workspace new prod-env
```
* **`terraform workspace select default`:** Selects the `default` workspace.
```
terraform workspace select default
```
* **`terraform workspace list`:** Lists all available workspaces.
```
terraform workspace list
```
* **`terraform workspace select prod-env`:** Selects the `prod-env` workspace.
```
terraform workspace select prod-env
```