Accounts:
VPCs come in following T-shirt sizes:
Micro: /23 - 32/subnet
Small: /22 - 64/subnet
Medium: /21 - 128/subnet
Large: /20 - 256/subnet
XLarge: /19 - 512/subnet
*Please note: AWS reserves five IP addresses per subnet
Below displays Large VPC size:
CloudFormation template, still to be done:
- add parameter section
- wherever VPC/subnet CIDR is hardcoded change to input parameter:
- Old: "CidrBlock": "10.22.2.0/24"
- New: "CidrBlock": { "Ref": "web1CIDR" }
{
"AWSTemplateFormatVersion": "2010-09-09",
"Resources": {
"vpc0a20ebcd5ad0afcc3": {
"Type": "AWS::EC2::VPC",
"Properties": {
"CidrBlock": "10.22.0.0/20",
"InstanceTenancy": "default",
"EnableDnsSupport": "true",
"EnableDnsHostnames": "false",
"Tags": [
{
"Key": "Name",
"Value": "SampleVPC"
}
]
}
},
"subnet08211208971298906": {
"Type": "AWS::EC2::Subnet",
"Properties": {
"CidrBlock": "10.22.2.0/24",
"AvailabilityZone": "ap-southeast-2a",
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "Web-1"
}
]
}
},
"subnet0e0ed5fb7f7c29273": {
"Type": "AWS::EC2::Subnet",
"Properties": {
"CidrBlock": "10.22.12.0/24",
"AvailabilityZone": "ap-southeast-2c",
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "Web-3"
}
]
}
},
"subnet0e57ed3564c6ee0b7": {
"Type": "AWS::EC2::Subnet",
"Properties": {
"CidrBlock": "10.22.10.0/24",
"AvailabilityZone": "ap-southeast-2c",
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "Public-3"
}
]
}
},
"subnet0e62c34a812b74226": {
"Type": "AWS::EC2::Subnet",
"Properties": {
"CidrBlock": "10.22.0.0/24",
"AvailabilityZone": "ap-southeast-2a",
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "Public-1"
}
]
}
},
"subnet0453eee2fa31e4b2e": {
"Type": "AWS::EC2::Subnet",
"Properties": {
"CidrBlock": "10.22.8.0/24",
"AvailabilityZone": "ap-southeast-2b",
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "App-2"
}
]
}
},
"subnet0b0d8faf6e6beae2d": {
"Type": "AWS::EC2::Subnet",
"Properties": {
"CidrBlock": "10.22.1.0/24",
"AvailabilityZone": "ap-southeast-2a",
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "NAT-1"
}
]
}
},
"subnet0f2da790711ffbb3b": {
"Type": "AWS::EC2::Subnet",
"Properties": {
"CidrBlock": "10.22.5.0/24",
"AvailabilityZone": "ap-southeast-2b",
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "Public-2"
}
]
}
},
"subnet0f88525d49526c302": {
"Type": "AWS::EC2::Subnet",
"Properties": {
"CidrBlock": "10.22.13.0/24",
"AvailabilityZone": "ap-southeast-2c",
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "App-3"
}
]
}
},
"subnet0a234a67484d465ac": {
"Type": "AWS::EC2::Subnet",
"Properties": {
"CidrBlock": "10.22.14.0/24",
"AvailabilityZone": "ap-southeast-2c",
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "Data-3"
}
]
}
},
"subnet0763e658bc3536b59": {
"Type": "AWS::EC2::Subnet",
"Properties": {
"CidrBlock": "10.22.9.0/24",
"AvailabilityZone": "ap-southeast-2b",
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "Data-2"
}
]
}
},
"subnet09a772953c709d0a6": {
"Type": "AWS::EC2::Subnet",
"Properties": {
"CidrBlock": "10.22.6.0/24",
"AvailabilityZone": "ap-southeast-2b",
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "NAT-2"
}
]
}
},
"subnet07a3ad9ebce841b87": {
"Type": "AWS::EC2::Subnet",
"Properties": {
"CidrBlock": "10.22.4.0/24",
"AvailabilityZone": "ap-southeast-2a",
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "Data-1"
}
]
}
},
"subnet0f4b780fdca433da5": {
"Type": "AWS::EC2::Subnet",
"Properties": {
"CidrBlock": "10.22.7.0/24",
"AvailabilityZone": "ap-southeast-2b",
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "Web-2"
}
]
}
},
"subnet05e6fe319d522ec7e": {
"Type": "AWS::EC2::Subnet",
"Properties": {
"CidrBlock": "10.22.3.0/24",
"AvailabilityZone": "ap-southeast-2a",
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "App-1"
}
]
}
},
"subnet0737753cb795b3dc6": {
"Type": "AWS::EC2::Subnet",
"Properties": {
"CidrBlock": "10.22.11.0/24",
"AvailabilityZone": "ap-southeast-2c",
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "NAT-3"
}
]
}
},
"igw0356f970a2bc6cc06": {
"Type": "AWS::EC2::InternetGateway",
"Properties": {
"Tags": [
{
"Key": "Name",
"Value": "ZIGW"
}
]
}
},
"doptb2f3b2d5": {
"Type": "AWS::EC2::DHCPOptions",
"Properties": {
"DomainName": "ap-southeast-2.compute.internal",
"DomainNameServers": [
"AmazonProvidedDNS"
]
}
},
"acl0046ab3d9eaec62da": {
"Type": "AWS::EC2::NetworkAcl",
"Properties": {
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
}
}
},
"rtb07d6510351805bf28": {
"Type": "AWS::EC2::RouteTable",
"Properties": {
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "ZVPC-AZ2"
}
]
}
},
"rtb03d3594b759f0d423": {
"Type": "AWS::EC2::RouteTable",
"Properties": {
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "ZVPC-AZ3"
}
]
}
},
"rtb017a472d2d8d61ce5": {
"Type": "AWS::EC2::RouteTable",
"Properties": {
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "ZVPC-Public"
}
]
}
},
"rtb0d46463a6ab971e4f": {
"Type": "AWS::EC2::RouteTable",
"Properties": {
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"Tags": [
{
"Key": "Name",
"Value": "ZVPC-AZ1"
}
]
}
},
"rtb0944f43d86c016a02": {
"Type": "AWS::EC2::RouteTable",
"Properties": {
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
}
}
},
"acl1": {
"Type": "AWS::EC2::NetworkAclEntry",
"Properties": {
"CidrBlock": "0.0.0.0/0",
"Egress": "true",
"Protocol": "-1",
"RuleAction": "allow",
"RuleNumber": "100",
"NetworkAclId": {
"Ref": "acl0046ab3d9eaec62da"
}
}
},
"acl2": {
"Type": "AWS::EC2::NetworkAclEntry",
"Properties": {
"CidrBlock": "0.0.0.0/0",
"Protocol": "-1",
"RuleAction": "allow",
"RuleNumber": "100",
"NetworkAclId": {
"Ref": "acl0046ab3d9eaec62da"
}
}
},
"subnetacl1": {
"Type": "AWS::EC2::SubnetNetworkAclAssociation",
"Properties": {
"NetworkAclId": {
"Ref": "acl0046ab3d9eaec62da"
},
"SubnetId": {
"Ref": "subnet0453eee2fa31e4b2e"
}
}
},
"subnetacl2": {
"Type": "AWS::EC2::SubnetNetworkAclAssociation",
"Properties": {
"NetworkAclId": {
"Ref": "acl0046ab3d9eaec62da"
},
"SubnetId": {
"Ref": "subnet09a772953c709d0a6"
}
}
},
"subnetacl3": {
"Type": "AWS::EC2::SubnetNetworkAclAssociation",
"Properties": {
"NetworkAclId": {
"Ref": "acl0046ab3d9eaec62da"
},
"SubnetId": {
"Ref": "subnet0737753cb795b3dc6"
}
}
},
"subnetacl4": {
"Type": "AWS::EC2::SubnetNetworkAclAssociation",
"Properties": {
"NetworkAclId": {
"Ref": "acl0046ab3d9eaec62da"
},
"SubnetId": {
"Ref": "subnet0a234a67484d465ac"
}
}
},
"subnetacl5": {
"Type": "AWS::EC2::SubnetNetworkAclAssociation",
"Properties": {
"NetworkAclId": {
"Ref": "acl0046ab3d9eaec62da"
},
"SubnetId": {
"Ref": "subnet0f4b780fdca433da5"
}
}
},
"subnetacl6": {
"Type": "AWS::EC2::SubnetNetworkAclAssociation",
"Properties": {
"NetworkAclId": {
"Ref": "acl0046ab3d9eaec62da"
},
"SubnetId": {
"Ref": "subnet08211208971298906"
}
}
},
"subnetacl7": {
"Type": "AWS::EC2::SubnetNetworkAclAssociation",
"Properties": {
"NetworkAclId": {
"Ref": "acl0046ab3d9eaec62da"
},
"SubnetId": {
"Ref": "subnet07a3ad9ebce841b87"
}
}
},
"subnetacl8": {
"Type": "AWS::EC2::SubnetNetworkAclAssociation",
"Properties": {
"NetworkAclId": {
"Ref": "acl0046ab3d9eaec62da"
},
"SubnetId": {
"Ref": "subnet0b0d8faf6e6beae2d"
}
}
},
"subnetacl9": {
"Type": "AWS::EC2::SubnetNetworkAclAssociation",
"Properties": {
"NetworkAclId": {
"Ref": "acl0046ab3d9eaec62da"
},
"SubnetId": {
"Ref": "subnet05e6fe319d522ec7e"
}
}
},
"subnetacl10": {
"Type": "AWS::EC2::SubnetNetworkAclAssociation",
"Properties": {
"NetworkAclId": {
"Ref": "acl0046ab3d9eaec62da"
},
"SubnetId": {
"Ref": "subnet0f2da790711ffbb3b"
}
}
},
"subnetacl11": {
"Type": "AWS::EC2::SubnetNetworkAclAssociation",
"Properties": {
"NetworkAclId": {
"Ref": "acl0046ab3d9eaec62da"
},
"SubnetId": {
"Ref": "subnet0e57ed3564c6ee0b7"
}
}
},
"subnetacl12": {
"Type": "AWS::EC2::SubnetNetworkAclAssociation",
"Properties": {
"NetworkAclId": {
"Ref": "acl0046ab3d9eaec62da"
},
"SubnetId": {
"Ref": "subnet0763e658bc3536b59"
}
}
},
"subnetacl13": {
"Type": "AWS::EC2::SubnetNetworkAclAssociation",
"Properties": {
"NetworkAclId": {
"Ref": "acl0046ab3d9eaec62da"
},
"SubnetId": {
"Ref": "subnet0e62c34a812b74226"
}
}
},
"subnetacl14": {
"Type": "AWS::EC2::SubnetNetworkAclAssociation",
"Properties": {
"NetworkAclId": {
"Ref": "acl0046ab3d9eaec62da"
},
"SubnetId": {
"Ref": "subnet0f88525d49526c302"
}
}
},
"subnetacl15": {
"Type": "AWS::EC2::SubnetNetworkAclAssociation",
"Properties": {
"NetworkAclId": {
"Ref": "acl0046ab3d9eaec62da"
},
"SubnetId": {
"Ref": "subnet0e0ed5fb7f7c29273"
}
}
},
"gw1": {
"Type": "AWS::EC2::VPCGatewayAttachment",
"Properties": {
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"InternetGatewayId": {
"Ref": "igw0356f970a2bc6cc06"
}
}
},
"subnetroute1": {
"Type": "AWS::EC2::SubnetRouteTableAssociation",
"Properties": {
"RouteTableId": {
"Ref": "rtb07d6510351805bf28"
},
"SubnetId": {
"Ref": "subnet09a772953c709d0a6"
}
}
},
"subnetroute2": {
"Type": "AWS::EC2::SubnetRouteTableAssociation",
"Properties": {
"RouteTableId": {
"Ref": "rtb03d3594b759f0d423"
},
"SubnetId": {
"Ref": "subnet0737753cb795b3dc6"
}
}
},
"subnetroute3": {
"Type": "AWS::EC2::SubnetRouteTableAssociation",
"Properties": {
"RouteTableId": {
"Ref": "rtb017a472d2d8d61ce5"
},
"SubnetId": {
"Ref": "subnet0e62c34a812b74226"
}
}
},
"subnetroute4": {
"Type": "AWS::EC2::SubnetRouteTableAssociation",
"Properties": {
"RouteTableId": {
"Ref": "rtb017a472d2d8d61ce5"
},
"SubnetId": {
"Ref": "subnet0f2da790711ffbb3b"
}
}
},
"subnetroute5": {
"Type": "AWS::EC2::SubnetRouteTableAssociation",
"Properties": {
"RouteTableId": {
"Ref": "rtb017a472d2d8d61ce5"
},
"SubnetId": {
"Ref": "subnet0e57ed3564c6ee0b7"
}
}
},
"subnetroute6": {
"Type": "AWS::EC2::SubnetRouteTableAssociation",
"Properties": {
"RouteTableId": {
"Ref": "rtb0d46463a6ab971e4f"
},
"SubnetId": {
"Ref": "subnet0b0d8faf6e6beae2d"
}
}
},
"subnetroute7": {
"Type": "AWS::EC2::SubnetRouteTableAssociation",
"Properties": {
"RouteTableId": {
"Ref": "rtb0944f43d86c016a02"
},
"SubnetId": {
"Ref": "subnet0453eee2fa31e4b2e"
}
}
},
"subnetroute8": {
"Type": "AWS::EC2::SubnetRouteTableAssociation",
"Properties": {
"RouteTableId": {
"Ref": "rtb0944f43d86c016a02"
},
"SubnetId": {
"Ref": "subnet0e0ed5fb7f7c29273"
}
}
},
"subnetroute9": {
"Type": "AWS::EC2::SubnetRouteTableAssociation",
"Properties": {
"RouteTableId": {
"Ref": "rtb0944f43d86c016a02"
},
"SubnetId": {
"Ref": "subnet0a234a67484d465ac"
}
}
},
"subnetroute10": {
"Type": "AWS::EC2::SubnetRouteTableAssociation",
"Properties": {
"RouteTableId": {
"Ref": "rtb0944f43d86c016a02"
},
"SubnetId": {
"Ref": "subnet08211208971298906"
}
}
},
"subnetroute11": {
"Type": "AWS::EC2::SubnetRouteTableAssociation",
"Properties": {
"RouteTableId": {
"Ref": "rtb0944f43d86c016a02"
},
"SubnetId": {
"Ref": "subnet05e6fe319d522ec7e"
}
}
},
"subnetroute12": {
"Type": "AWS::EC2::SubnetRouteTableAssociation",
"Properties": {
"RouteTableId": {
"Ref": "rtb0944f43d86c016a02"
},
"SubnetId": {
"Ref": "subnet0763e658bc3536b59"
}
}
},
"subnetroute13": {
"Type": "AWS::EC2::SubnetRouteTableAssociation",
"Properties": {
"RouteTableId": {
"Ref": "rtb0944f43d86c016a02"
},
"SubnetId": {
"Ref": "subnet0f4b780fdca433da5"
}
}
},
"subnetroute14": {
"Type": "AWS::EC2::SubnetRouteTableAssociation",
"Properties": {
"RouteTableId": {
"Ref": "rtb0944f43d86c016a02"
},
"SubnetId": {
"Ref": "subnet07a3ad9ebce841b87"
}
}
},
"subnetroute16": {
"Type": "AWS::EC2::SubnetRouteTableAssociation",
"Properties": {
"RouteTableId": {
"Ref": "rtb0944f43d86c016a02"
},
"SubnetId": {
"Ref": "subnet0f88525d49526c302"
}
}
},
"route1": {
"Type": "AWS::EC2::Route",
"Properties": {
"DestinationCidrBlock": "0.0.0.0/0",
"RouteTableId": {
"Ref": "rtb07d6510351805bf28"
}
}
},
"route2": {
"Type": "AWS::EC2::Route",
"Properties": {
"DestinationCidrBlock": "0.0.0.0/0",
"RouteTableId": {
"Ref": "rtb03d3594b759f0d423"
}
}
},
"route3": {
"Type": "AWS::EC2::Route",
"Properties": {
"DestinationCidrBlock": "0.0.0.0/0",
"RouteTableId": {
"Ref": "rtb017a472d2d8d61ce5"
},
"GatewayId": {
"Ref": "igw0356f970a2bc6cc06"
}
},
"DependsOn": "gw1"
},
"route4": {
"Type": "AWS::EC2::Route",
"Properties": {
"DestinationCidrBlock": "0.0.0.0/0",
"RouteTableId": {
"Ref": "rtb0d46463a6ab971e4f"
}
}
},
"dchpassoc1": {
"Type": "AWS::EC2::VPCDHCPOptionsAssociation",
"Properties": {
"VpcId": {
"Ref": "vpc0a20ebcd5ad0afcc3"
},
"DhcpOptionsId": {
"Ref": "doptb2f3b2d5"
}
}
}
},
"Description": "Zoran's VPC pattern template"
}
https://github.com/keithsharp/cloudformation-templates/blob/master/vpc-template.yaml
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