3-subnets.tf

resource "aws_subnet" "private-us-east-1a" {
  vpc_id            = aws_vpc.main.id
  cidr_block        = "10.0.10.0/24"
  availability_zone = "us-east-1a"

  tags = {
    "Name" = "private-us-east-1a"
  }
}

resource "aws_subnet" "private-us-east-1b" {
  vpc_id            = aws_vpc.main.id
  cidr_block        = "10.0.11.0/24"
  availability_zone = "us-east-1b"

  tags = {
    "Name" = "private-us-east-1b"
  }
}

resource "aws_subnet" "public-us-east-1a" {
  vpc_id                  = aws_vpc.main.id
  cidr_block              = "10.0.100.0/24"
  availability_zone       = "us-east-1a"
  map_public_ip_on_launch = true

  tags = {
    "Name" = "public-us-east-1a"
  }
}

resource "aws_subnet" "public-us-east-1b" {
  vpc_id                  = aws_vpc.main.id
  cidr_block              = "10.0.101.0/24"
  availability_zone       = "us-east-1b"
  map_public_ip_on_launch = true

  tags = {
    "Name" = "public-us-east-1b"
  }
}