EFS Filesystem

📦 Overview

This Terraform module provisions a basic Amazon EFS (Elastic File System) setup with the following features:

It’s ideal for container workloads, shared EC2 volumes, and lift-and-shift legacy applications that require scalable, network-attached storage across multiple Availability Zones.

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✅ Key Features

• Provisions a single EFS filesystem for shared storage
• Creates mount targets in each specified subnet
• Accepts custom security groups for access control
• Supports multi-AZ architecture
• Tags resources by environment and name for clarity

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💼 Use Cases

• Persistent storage for container workloads (ECS, EKS)
• Shared file storage between EC2 instances
• Migrating legacy apps to AWS with file system dependencies
• Mountable, multi-AZ NFS storage for enterprise workloads

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📥 Input Variables

Name	Type	Description
region	string	AWS region to deploy the EFS filesystem
environment	string	Tag to specify the deployment environment (e.g., dev, staging, prod)
subnet_ids	list	List of subnet IDs where mount targets will be created
security_group_ids	list	List of security group IDs to attach to mount targets

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📤 Outputs

Name	Description
efs_id	The ID of the created EFS filesystem
mount_target_ids	The list of EFS mount target IDs
efs_arn	The ARN of the created EFS filesystem

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🚀 Deployment Readiness

• ✅ Compatible with Terraform 1.0+
• ✅ Tested with AWS provider 5.x
• 🧪 Requires existing VPC subnets and security groups

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🛠️ Example Usage

module "efs_filesystem" {
  source             = "git::ssh://git@github.com/archiphire/aws-level-1-modules.git//storage/efs-filesystem?ref=v1.0.0"

  region             = "us-east-1"
  environment        = "dev"
  subnet_ids         = ["subnet-abc123", "subnet-def456"]
  security_group_ids = ["sg-1234567890abcdef0"]
}

terraform init
terraform plan
terraform apply

or

tofu init
tofu plan
tofu apply

🧹 Cleanup Options

terraform destroy

or

tofu destroy

Manual Cleanup (recommended for production):

Unmount the EFS filesystem from all clients Manually delete the EFS filesystem via the AWS Console or CLI Remove associated mount targets and unused security groups

🛡️ Notes

This is a Level 1 foundational storage module. For encryption or performance tuning, use:

efs-filesystem-encrypted efs-filesystem-performance

Or compose them into a Level 2 workload module for advanced use cases.

🔒 Deployment Package Notice

This module is part of the Level 1 AWS License Tier. To access the full deployment package and source code, subscribe to Archiphire.