cdk で下記のようすると、１行でベストプラクティスのvpcを作ってくれます。
this.vpc = new ec2.Vpc(this, "TheVpc", cidr="10.0.0.0/16");
PublicSubnet,PrivateSubnet,IGW,Natgatewayなどが作られますが、
ちょっと検証したいだけの場合は、大げさすぎます。
NatGatewayは料金が高いし、あまり、使いたくありません。
自分好みのVPCを作りたい場合は、subnetConfigurationを空にします。
this.vpc = new ec2.Vpc(this, 'TheVPC', {
cidr: "10.0.0.0/16",
defaultInstanceTenancy: ec2.DefaultInstanceTenancy.DEFAULT,
enableDnsSupport: true,
enableDnsHostnames: true,
subnetConfiguration: []
});PublicSubnet、PrivateSubnet、IGWだけにして、他のスタックでVpcID, SubnetIDを使用できるようにしたいと思ったら、
最終的に、以下のようになりました。
import * as ec2 from '@aws-cdk/aws-ec2';
import * as cdk from '@aws-cdk/core';
export class VpcStack extends cdk.Stack {
vpc: ec2.IVpc;
pubSubnet: ec2.ISubnet[] = new Array(2);
priSubnet: ec2.ISubnet[] = new Array(2);
constructor(scope: cdk.App, id: string, props?: cdk.StackProps) {
super(scope, id, props);
// resources
const internetGateway = new ec2.CfnInternetGateway(this, "InternetGateway", {})
this.vpc = new ec2.Vpc(this, 'TheVPC', {
cidr: "10.0.0.0/16",
defaultInstanceTenancy: ec2.DefaultInstanceTenancy.DEFAULT,
enableDnsSupport: true,
enableDnsHostnames: true,
subnetConfiguration: []
});
const pub1 = new ec2.Subnet(this, "PublicSubnet1a", {
availabilityZone: "us-east-1a",
vpcId: this.vpc.vpcId,
cidrBlock: "10.0.0.0/24"
});
pub1.addRoute("PubSubnetRoute", {
routerType: ec2.RouterType.GATEWAY,
routerId: internetGateway.ref
});
this.pubSubnet[0] = pub1
const pub2 = new ec2.Subnet(this, "PublicSubnet1c", {
availabilityZone: "us-east-1c",
vpcId: this.vpc.vpcId,
cidrBlock: "10.0.1.0/24"
});
pub2.addRoute("PubSubnetRoute", {
routerType: ec2.RouterType.GATEWAY,
routerId: internetGateway.ref
});
this.pubSubnet[1] = pub2
this.priSubnet[0] = new ec2.Subnet(this, "PrivateSubnet1a", {
availabilityZone: "us-east-1a",
vpcId: this.vpc.vpcId,
cidrBlock: "10.0.10.0/24"
});
this.priSubnet[1] = new ec2.Subnet(this, "PrivateSubnet1c", {
availabilityZone: "us-east-1c",
vpcId: this.vpc.vpcId,
cidrBlock: "10.0.11.0/24"
});
new ec2.CfnVPCGatewayAttachment(this, "gateway", {
vpcId: this.vpc.vpcId,
internetGatewayId: internetGateway.ref
});
// outputs
new cdk.CfnOutput(this, 'VpcId', {
description: 'vpc id',
value: this.vpc.vpcId,
exportName: `${this.stackName}-vpcId`
});
new cdk.CfnOutput(this, 'PublicSubnetId1', {
description: 'public subnet id (a)',
value: this.pubSubnet[0].subnetId,
exportName: `${this.stackName}-publicSubnetId1`
});
new cdk.CfnOutput(this, 'PublicSubnetId2', {
description: 'public subnet id (c)',
value: this.pubSubnet[1].subnetId,
exportName: `${this.stackName}-publicSubnetId2`
});
new cdk.CfnOutput(this, 'PrivateSubnetId1', {
description: 'private subnet id (a)',
value: this.priSubnet[0].subnetId,
exportName: `${this.stackName}-privateSubnetId1`
});
new cdk.CfnOutput(this, 'PrivateSubnetId2', {
description: 'private subnet id (c)',
value: this.priSubnet[1].subnetId,
exportName: `${this.stackName}-privateSubnetId2`
});
}
}low-levelのCfnVPCを使う方法は、下記ページが詳しいです。
Constructの種類（high-level, low-level,pattern）については、下記ページが詳しいです。
