Aws – ahmadrazalab

AWS Service Resource Blocks in Terraform

1. Amazon S3 (Simple Storage Service)

Resource Block:

resource "aws_s3_bucket" "example" {
  bucket = "my-example-bucket"
  acl    = "private"
 
  tags = {
    Name        = "example-bucket"
    Environment = "dev"
  }
}

Notes:

bucket specifies the name of the bucket.
acl sets the access control list for the bucket.

2. Amazon EC2 (Elastic Compute Cloud)

Resource Block:

resource "aws_instance" "example" {
  ami           = "ami-0c55b159cbfafe1f0"
  instance_type = "t2.micro"
 
  tags = {
    Name = "example-instance"
  }
}

Notes:

ami specifies the Amazon Machine Image ID.
instance_type defines the instance type (e.g., t2.micro).

3. Amazon RDS (Relational Database Service)

Resource Block:

resource "aws_db_instance" "example" {
  identifier        = "mydbinstance"
  instance_class    = "db.t3.micro"
  engine            = "mysql"
  engine_version    = "8.0"
  username          = "admin"
  password          = "password"
  allocated_storage = 20
 
  tags = {
    Name = "example-db"
  }
}

Notes:

instance_class defines the instance type.
engine specifies the database engine (e.g., mysql).

4. Amazon ALB (Application Load Balancer)

Resource Block:

resource "aws_lb" "example" {
  name               = "example-alb"
  internal           = false
  load_balancer_type = "application"
  security_groups    = ["sg-0abc1234"]
  subnets            = ["subnet-0abc1234", "subnet-1abc1234"]
 
  enable_deletion_protection = false
 
  tags = {
    Name = "example-alb"
  }
}

Notes:

security_groups is a list of security group IDs.
subnets specifies the subnets for the load balancer.

5. Amazon VPC (Virtual Private Cloud)

Resource Block:

resource "aws_vpc" "example" {
  cidr_block = "10.0.0.0/16"
 
  tags = {
    Name = "example-vpc"
  }
}

Notes:

cidr_block defines the IP address range for the VPC.

6. Amazon IAM Role

Resource Block:

resource "aws_iam_role" "example" {
  name = "example-role"
 
  assume_role_policy = jsonencode({
    Version = "2012-10-17",
    Statement = [
      {
        Action = "sts:AssumeRole",
        Effect = "Allow",
        Principal = {
          Service = "ec2.amazonaws.com",
        },
      },
    ],
  })
 
  tags = {
    Name = "example-role"
  }
}

Notes:

assume_role_policy defines the policy that grants an entity permission to assume the role.

7. Amazon DynamoDB

Resource Block:

resource "aws_dynamodb_table" "example" {
  name           = "example-table"
  billing_mode    = "PROVISIONED"
  hash_key        = "id"
  read_capacity   = 5
  write_capacity  = 5
  attribute {
    name = "id"
    type = "S"
  }
 
  tags = {
    Name = "example-table"
  }
}

Notes:

hash_key specifies the primary key attribute.
billing_mode can be PROVISIONED or PAY_PER_REQUEST.

8. Amazon SQS (Simple Queue Service)

Resource Block:

resource "aws_sqs_queue" "example" {
  name = "example-queue"
 
  tags = {
    Name = "example-queue"
  }
}

Notes:

name specifies the name of the queue.

9. Amazon SNS (Simple Notification Service)

Resource Block:

resource "aws_sns_topic" "example" {
  name = "example-topic"
 
  tags = {
    Name = "example-topic"
  }
}

Notes:

name specifies the name of the SNS topic.

10. Amazon CloudWatch Alarm

Resource Block:

resource "aws_cloudwatch_alarm" "example" {
  alarm_name          = "example-alarm"
  comparison_operator = "GreaterThanThreshold"
  evaluation_periods  = 1
  metric_name         = "CPUUtilization"
  namespace           = "AWS/EC2"
  period              = 60
  statistic           = "Average"
  threshold           = 80
 
  alarm_actions = [
    "arn:aws:sns:us-west-2:123456789012:example-topic"
  ]
 
  tags = {
    Name = "example-alarm"
  }
}

Notes:

metric_name specifies the metric to monitor.
threshold is the value that triggers the alarm.

Summary

These resource blocks provide a foundational setup for some of the most commonly used AWS services. Customize the configurations according to your specific requirements and environment.🚀

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