如何在terraform中创建使用不同子网和安全组的ec2实例？

# 配置VPC
resource "aws_vpc" "my_vpc" {
  cidr_block = "10.0.0.0/16"
}

# 配置子网
resource "aws_subnet" "subnet1" {
  vpc_id                  = aws_vpc.my_vpc.id
  cidr_block              = "10.0.1.0/24"
  availability_zone       = "us-west-2a"
}

resource "aws_subnet" "subnet2" {
  vpc_id                  = aws_vpc.my_vpc.id
  cidr_block              = "10.0.2.0/24"
  availability_zone       = "us-west-2b"
}

# 配置安全组
resource "aws_security_group" "sg1" {
  name        = "security_group1"
  description = "Security Group 1"

  ingress {
    from_port   = 22
    to_port     = 22
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }
}

resource "aws_security_group" "sg2" {
  name        = "security_group2"
  description = "Security Group 2"

  ingress {
    from_port   = 80
    to_port     = 80
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }
}

# 创建EC2实例
resource "aws_instance" "instance1" {
  ami           = "ami-12345678"
  instance_type = "t2.micro"
  subnet_id     = aws_subnet.subnet1.id
  vpc_security_group_ids = [aws_security_group.sg1.id]
}

resource "aws_instance" "instance2" {
  ami           = "ami-12345678"
  instance_type = "t2.micro"
  subnet_id     = aws_subnet.subnet2.id
  vpc_security_group_ids = [aws_security_group.sg2.id]
}