---
id: sm-terraform-module-library
name: "terraform-module-library"
url: https://skills.yangsir.net/skill/sm-terraform-module-library
author: wshobson
domain: cloud-infra
tags: ["terraform", "infrastructure-as-code", "aws/azure/gcp", "cloud-provisioning", "module-development"]
install_count: 10700
rating: 4.50 (129 reviews)
github: https://github.com/wshobson/agents
---

# terraform-module-library

> 构建Terraform模块库，结合智能自动化与多智能体编排，实现云基础设施的自动化部署与管理。

**Stats**: 10,700 installs · 4.5/5 (129 reviews)

## Before / After 对比

### Terraform模块库：云基础设施自动化部署的智能升级

## Readme

# terraform-module-library

# Terraform Module Library

Production-ready Terraform module patterns for AWS, Azure, GCP, and OCI infrastructure.

## Purpose

Create reusable, well-tested Terraform modules for common cloud infrastructure patterns across multiple cloud providers.

## When to Use

- Build reusable infrastructure components

- Standardize cloud resource provisioning

- Implement infrastructure as code best practices

- Create multi-cloud compatible modules

- Establish organizational Terraform standards

## Module Structure

```
terraform-modules/
├── aws/
│   ├── vpc/
│   ├── eks/
│   ├── rds/
│   └── s3/
├── azure/
│   ├── vnet/
│   ├── aks/
│   └── storage/
├── gcp/
│   ├── vpc/
│   ├── gke/
│   └── cloud-sql/
└── oci/
    ├── vcn/
    ├── oke/
    └── object-storage/

```

## Standard Module Pattern

```
module-name/
├── main.tf          # Main resources
├── variables.tf     # Input variables
├── outputs.tf       # Output values
├── versions.tf      # Provider versions
├── README.md        # Documentation
├── examples/        # Usage examples
│   └── complete/
│       ├── main.tf
│       └── variables.tf
└── tests/           # Terratest files
    └── module_test.go

```

## AWS VPC Module Example

**main.tf:**

```
resource "aws_vpc" "main" {
  cidr_block           = var.cidr_block
  enable_dns_hostnames = var.enable_dns_hostnames
  enable_dns_support   = var.enable_dns_support

  tags = merge(
    {
      Name = var.name
    },
    var.tags
  )
}

resource "aws_subnet" "private" {
  count             = length(var.private_subnet_cidrs)
  vpc_id            = aws_vpc.main.id
  cidr_block        = var.private_subnet_cidrs[count.index]
  availability_zone = var.availability_zones[count.index]

  tags = merge(
    {
      Name = "${var.name}-private-${count.index + 1}"
      Tier = "private"
    },
    var.tags
  )
}

resource "aws_internet_gateway" "main" {
  count  = var.create_internet_gateway ? 1 : 0
  vpc_id = aws_vpc.main.id

  tags = merge(
    {
      Name = "${var.name}-igw"
    },
    var.tags
  )
}

```

**variables.tf:**

```
variable "name" {
  description = "Name of the VPC"
  type        = string
}

variable "cidr_block" {
  description = "CIDR block for VPC"
  type        = string
  validation {
    condition     = can(regex("^([0-9]{1,3}\\.){3}[0-9]{1,3}/[0-9]{1,2}$", var.cidr_block))
    error_message = "CIDR block must be valid IPv4 CIDR notation."
  }
}

variable "availability_zones" {
  description = "List of availability zones"
  type        = list(string)
}

variable "private_subnet_cidrs" {
  description = "CIDR blocks for private subnets"
  type        = list(string)
  default     = []
}

variable "enable_dns_hostnames" {
  description = "Enable DNS hostnames in VPC"
  type        = bool
  default     = true
}

variable "tags" {
  description = "Additional tags"
  type        = map(string)
  default     = {}
}

```

**outputs.tf:**

```
output "vpc_id" {
  description = "ID of the VPC"
  value       = aws_vpc.main.id
}

output "private_subnet_ids" {
  description = "IDs of private subnets"
  value       = aws_subnet.private[*].id
}

output "vpc_cidr_block" {
  description = "CIDR block of VPC"
  value       = aws_vpc.main.cidr_block
}

```

## Best Practices

- **Use semantic versioning** for modules

- **Document all variables** with descriptions

- **Provide examples** in examples/ directory

- **Use validation blocks** for input validation

- **Output important attributes** for module composition

- **Pin provider versions** in versions.tf

- **Use locals** for computed values

- **Implement conditional resources** with count/for_each

- **Test modules** with Terratest

- **Tag all resources** consistently

**Reference:** See `references/aws-modules.md` and `references/oci-modules.md`

## Module Composition

```
module "vpc" {
  source = "../../modules/aws/vpc"

  name               = "production"
  cidr_block         = "10.0.0.0/16"
  availability_zones = ["us-west-2a", "us-west-2b", "us-west-2c"]

  private_subnet_cidrs = [
    "10.0.1.0/24",
    "10.0.2.0/24",
    "10.0.3.0/24"
  ]

  tags = {
    Environment = "production"
    ManagedBy   = "terraform"
  }
}

module "rds" {
  source = "../../modules/aws/rds"

  identifier     = "production-db"
  engine         = "postgres"
  engine_version = "15.3"
  instance_class = "db.t3.large"

  vpc_id     = module.vpc.vpc_id
  subnet_ids = module.vpc.private_subnet_ids

  tags = {
    Environment = "production"
  }
}

```

## Testing

```
// tests/vpc_test.go
package test

import (
    "testing"
    "github.com/gruntwork-io/terratest/modules/terraform"
    "github.com/stretchr/testify/assert"
)

func TestVPCModule(t *testing.T) {
    terraformOptions := &terraform.Options{
        TerraformDir: "../examples/complete",
    }

    defer terraform.Destroy(t, terraformOptions)
    terraform.InitAndApply(t, terraformOptions)

    vpcID := terraform.Output(t, terraformOptions, "vpc_id")
    assert.NotEmpty(t, vpcID)
}

```

## Related Skills

- `multi-cloud-architecture` - For architectural decisions

- `cost-optimization` - For cost-effective designs

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---
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