terraform aws instance code example
Example 1: aws vpc creation using terraform
provider "aws" {
region = "${var.region}"
access_key = "${var.access_key}"
secret_key = "${var.secret_key}"
}
resource "aws_vpc" "default" {
cidr_block = var.cidr_block
enable_dns_support = true
enable_dns_hostnames = true
}
resource "aws_internet_gateway" "default" {
vpc_id = aws_vpc.default.id
}
resource "aws_route_table" "private" {
count = length(var.private_subnet_cidr_blocks)
vpc_id = aws_vpc.default.id
}
resource "aws_route" "private" {
count = length(var.private_subnet_cidr_blocks)
route_table_id = aws_route_table.private[count.index].id
destination_cidr_block = "0.0.0.0/0"
nat_gateway_id = aws_nat_gateway.default[count.index].id
}
resource "aws_route_table" "public" {
vpc_id = aws_vpc.default.id
}
resource "aws_route" "public" {
route_table_id = aws_route_table.public.id
destination_cidr_block = "0.0.0.0/0"
gateway_id = aws_internet_gateway.default.id
}
resource "aws_subnet" "private" {
count = length(var.private_subnet_cidr_blocks)
vpc_id = aws_vpc.default.id
cidr_block = var.private_subnet_cidr_blocks[count.index]
availability_zone = var.availability_zones[count.index]
}
resource "aws_subnet" "public" {
count = length(var.public_subnet_cidr_blocks)
vpc_id = aws_vpc.default.id
cidr_block = var.public_subnet_cidr_blocks[count.index]
availability_zone = var.availability_zones[count.index]
map_public_ip_on_launch = true
}
resource "aws_route_table_association" "private" {
count = length(var.private_subnet_cidr_blocks)
subnet_id = aws_subnet.private[count.index].id
route_table_id = aws_route_table.private[count.index].id
}
resource "aws_route_table_association" "public" {
count = length(var.public_subnet_cidr_blocks)
subnet_id = aws_subnet.public[count.index].id
route_table_id = aws_route_table.public.id
}
resource "aws_eip" "nat" {
count = length(var.public_subnet_cidr_blocks)
vpc = true
}
resource "aws_nat_gateway" "default" {
depends_on = ["aws_internet_gateway.default"]
count = length(var.public_subnet_cidr_blocks)
allocation_id = aws_eip.nat[count.index].id
subnet_id = aws_subnet.public[count.index].id
}
Example 2: aws instance creation using terraform
resource "aws_instance" "myec2" {
ami = "<AMI-ID>"
instance_type = "t2.micro"
vpc_security_group_ids = ["SECURITY-GROUP-ID"]
key_name = "<KEY-NAME>"
subnet_id = "<SUBNET ID>"
iam_instance_profile = "<ROLE NAME>"
tags = {
Name = "<PUT THE NAME>"
}
}
Example 3: terraform script to create ec2 instance
module "ec2_cluster" {
source = "terraform-aws-modules/ec2-instance/aws"
version = "~> 2.0"
name = "my-cluster"
instance_count = 5
ami = "ami-ebd02392"
instance_type = "t2.micro"
key_name = "user1"
monitoring = true
vpc_security_group_ids = ["sg-12345678"]
subnet_id = "subnet-eddcdzz4"
tags = {
Terraform = "true"
Environment = "dev"
}
}
Example 4: create aws ec2 instance using terraform
provider "aws" {
region = "ap-south-1"
}
resource "aws_instance" "ec2" {
ami = "ami-019f0583716f0aec4" //ap-south-1
instance_type = "t2.micro"
tags = {
Name = "visualscrapy"
}
}