Project: ElastiCache Redis Deployment Using Terraform

Objective

Set up and maintain an ElastiCache Redis instance on Amazon Linux using Terraform for infrastructure as code (IaC) automation.

Detailed Steps

Step 1: Install Terraform

Description: Installed Terraform on an Amazon Linux EC2 instance to manage and automate AWS infrastructure.

Commands:

sudo yum install -y yum-utils
sudo yum-config-manager --add-repo https://rpm.releases.hashicorp.com/AmazonLinux/hashicorp.repo
sudo yum -y install terraform

Step 2: Create Terraform Configuration Files

Description: Created a Terraform configuration file to define the AWS provider, ElastiCache subnet group, and Redis cluster. Ensured the configurations matched the actual AWS environment.

File: main.tf

provider "aws" {
  region = "us-east-2" // Ensure the region matches your subnet's AZ
}

resource "aws_elasticache_subnet_group" "example" {
  name       = "redis-subnet-group"
  subnet_ids = ["subnet-0b313bf9dfbc70934"] // Your actual subnet ID
}

resource "aws_elasticache_cluster" "example" {
  cluster_id           = "syed-redis-cluster"
  engine               = "redis"
  node_type            = "cache.t3.micro" // Adjust as needed
  num_cache_nodes      = 1
  parameter_group_name = "default.redis6.x"
  subnet_group_name    = aws_elasticache_subnet_group.example.name
  security_group_ids   = ["sg-0b8875bcfc87fc22b"] // Your security group ID
  port                 = 6379
  engine_version       = "6.x"

  tags = {
    Name = "SyedRedisCluster"
  }
}

Step 3: Initialize and Apply Terraform Configuration

Description: Initialized the Terraform working directory and applied the configuration to provision the ElastiCache Redis instance on AWS.

Commands:

• Initialize Terraform

  terraform init

• Apply the Terraform Configuration

  terraform apply

  • Confirmed by typing yes to apply the configuration.

Step 4: Verify the Redis Cluster

Description: Verified the successful creation and deployment of the ElastiCache Redis cluster.

Verification Steps:

• Checked the AWS Management Console under the ElastiCache section to ensure the Redis cluster was created successfully.

Step 5: Connect to the Redis Cluster from Amazon Linux

Description: Connected to the Redis cluster using the Redis CLI from the EC2 instance to ensure connectivity and functionality.

Steps:

• Install Redis CLI

  sudo yum install redis

• Connect to Redis

  redis-cli -h <redis-endpoint> -p 6379 -a <password>

Conclusion

Successfully set up and maintained an ElastiCache Redis instance on Amazon Linux using Terraform. This project showcased the use of infrastructure as code (IaC) to automate and manage AWS resources, ensuring reproducibility and scalability.