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| 1 | +Description: |
| 2 | + This template deploys a VPC, with a pair of public and private subnets spread |
| 3 | + across two Availability Zones. It deploys an Internet Gateway, with a default |
| 4 | + route on the public subnets. It deploys a pair of NAT Gateways (one in each AZ), |
| 5 | + and default routes for them in the private subnets. |
| 6 | + |
| 7 | +Parameters: |
| 8 | + EnvironmentName: |
| 9 | + Description: An environment name that will be prefixed to resource names |
| 10 | + Type: String |
| 11 | + |
| 12 | + VpcCIDR: |
| 13 | + Description: Please enter the IP range (CIDR notation) for this VPC |
| 14 | + Type: String |
| 15 | + Default: 10.192.0.0/16 |
| 16 | + |
| 17 | + PublicSubnet1CIDR: |
| 18 | + Description: Please enter the IP range (CIDR notation) for the public subnet in the first Availability Zone |
| 19 | + Type: String |
| 20 | + Default: 10.192.10.0/24 |
| 21 | + |
| 22 | + PublicSubnet2CIDR: |
| 23 | + Description: Please enter the IP range (CIDR notation) for the public subnet in the second Availability Zone |
| 24 | + Type: String |
| 25 | + Default: 10.192.11.0/24 |
| 26 | + |
| 27 | + PrivateSubnet1CIDR: |
| 28 | + Description: Please enter the IP range (CIDR notation) for the private subnet in the first Availability Zone |
| 29 | + Type: String |
| 30 | + Default: 10.192.20.0/24 |
| 31 | + |
| 32 | + PrivateSubnet2CIDR: |
| 33 | + Description: Please enter the IP range (CIDR notation) for the private subnet in the second Availability Zone |
| 34 | + Type: String |
| 35 | + Default: 10.192.21.0/24 |
| 36 | + |
| 37 | +Resources: |
| 38 | + VPC: |
| 39 | + Type: AWS::EC2::VPC |
| 40 | + Properties: |
| 41 | + CidrBlock: !Ref VpcCIDR |
| 42 | + Tags: |
| 43 | + - Key: Name |
| 44 | + Value: !Ref EnvironmentName |
| 45 | + |
| 46 | + InternetGateway: |
| 47 | + Type: AWS::EC2::InternetGateway |
| 48 | + Properties: |
| 49 | + Tags: |
| 50 | + - Key: Name |
| 51 | + Value: !Ref EnvironmentName |
| 52 | + |
| 53 | + InternetGatewayAttachment: |
| 54 | + Type: AWS::EC2::VPCGatewayAttachment |
| 55 | + Properties: |
| 56 | + InternetGatewayId: !Ref InternetGateway |
| 57 | + VpcId: !Ref VPC |
| 58 | + |
| 59 | + PublicSubnet1: |
| 60 | + Type: AWS::EC2::Subnet |
| 61 | + Properties: |
| 62 | + VpcId: !Ref VPC |
| 63 | + AvailabilityZone: !Select [ 0, !GetAZs '' ] |
| 64 | + CidrBlock: !Ref PublicSubnet1CIDR |
| 65 | + MapPublicIpOnLaunch: true |
| 66 | + Tags: |
| 67 | + - Key: Name |
| 68 | + Value: !Sub ${EnvironmentName} Public Subnet (AZ1) |
| 69 | + |
| 70 | + PublicSubnet2: |
| 71 | + Type: AWS::EC2::Subnet |
| 72 | + Properties: |
| 73 | + VpcId: !Ref VPC |
| 74 | + AvailabilityZone: !Select [ 1, !GetAZs '' ] |
| 75 | + CidrBlock: !Ref PublicSubnet2CIDR |
| 76 | + MapPublicIpOnLaunch: true |
| 77 | + Tags: |
| 78 | + - Key: Name |
| 79 | + Value: !Sub ${EnvironmentName} Public Subnet (AZ2) |
| 80 | + |
| 81 | + PrivateSubnet1: |
| 82 | + Type: AWS::EC2::Subnet |
| 83 | + Properties: |
| 84 | + VpcId: !Ref VPC |
| 85 | + AvailabilityZone: !Select [ 0, !GetAZs '' ] |
| 86 | + CidrBlock: !Ref PrivateSubnet1CIDR |
| 87 | + MapPublicIpOnLaunch: false |
| 88 | + Tags: |
| 89 | + - Key: Name |
| 90 | + Value: !Sub ${EnvironmentName} Private Subnet (AZ1) |
| 91 | + |
| 92 | + PrivateSubnet2: |
| 93 | + Type: AWS::EC2::Subnet |
| 94 | + Properties: |
| 95 | + VpcId: !Ref VPC |
| 96 | + AvailabilityZone: !Select [ 1, !GetAZs '' ] |
| 97 | + CidrBlock: !Ref PrivateSubnet2CIDR |
| 98 | + MapPublicIpOnLaunch: false |
| 99 | + Tags: |
| 100 | + - Key: Name |
| 101 | + Value: !Sub ${EnvironmentName} Private Subnet (AZ2) |
| 102 | + |
| 103 | + NatGateway1EIP: |
| 104 | + Type: AWS::EC2::EIP |
| 105 | + DependsOn: InternetGatewayAttachment |
| 106 | + Properties: |
| 107 | + Domain: vpc |
| 108 | + |
| 109 | + NatGateway2EIP: |
| 110 | + Type: AWS::EC2::EIP |
| 111 | + DependsOn: InternetGatewayAttachment |
| 112 | + Properties: |
| 113 | + Domain: vpc |
| 114 | + |
| 115 | + NatGateway1: |
| 116 | + Type: AWS::EC2::NatGateway |
| 117 | + Properties: |
| 118 | + AllocationId: !GetAtt NatGateway1EIP.AllocationId |
| 119 | + SubnetId: !Ref PublicSubnet1 |
| 120 | + |
| 121 | + NatGateway2: |
| 122 | + Type: AWS::EC2::NatGateway |
| 123 | + Properties: |
| 124 | + AllocationId: !GetAtt NatGateway2EIP.AllocationId |
| 125 | + SubnetId: !Ref PublicSubnet2 |
| 126 | + |
| 127 | + PublicRouteTable: |
| 128 | + Type: AWS::EC2::RouteTable |
| 129 | + Properties: |
| 130 | + VpcId: !Ref VPC |
| 131 | + Tags: |
| 132 | + - Key: Name |
| 133 | + Value: !Sub ${EnvironmentName} Public Routes |
| 134 | + |
| 135 | + DefaultPublicRoute: |
| 136 | + Type: AWS::EC2::Route |
| 137 | + DependsOn: InternetGatewayAttachment |
| 138 | + Properties: |
| 139 | + RouteTableId: !Ref PublicRouteTable |
| 140 | + DestinationCidrBlock: 0.0.0.0/0 |
| 141 | + GatewayId: !Ref InternetGateway |
| 142 | + |
| 143 | + PublicSubnet1RouteTableAssociation: |
| 144 | + Type: AWS::EC2::SubnetRouteTableAssociation |
| 145 | + Properties: |
| 146 | + RouteTableId: !Ref PublicRouteTable |
| 147 | + SubnetId: !Ref PublicSubnet1 |
| 148 | + |
| 149 | + PublicSubnet2RouteTableAssociation: |
| 150 | + Type: AWS::EC2::SubnetRouteTableAssociation |
| 151 | + Properties: |
| 152 | + RouteTableId: !Ref PublicRouteTable |
| 153 | + SubnetId: !Ref PublicSubnet2 |
| 154 | + |
| 155 | + |
| 156 | + PrivateRouteTable1: |
| 157 | + Type: AWS::EC2::RouteTable |
| 158 | + Properties: |
| 159 | + VpcId: !Ref VPC |
| 160 | + Tags: |
| 161 | + - Key: Name |
| 162 | + Value: !Sub ${EnvironmentName} Private Routes (AZ1) |
| 163 | + |
| 164 | + DefaultPrivateRoute1: |
| 165 | + Type: AWS::EC2::Route |
| 166 | + Properties: |
| 167 | + RouteTableId: !Ref PrivateRouteTable1 |
| 168 | + DestinationCidrBlock: 0.0.0.0/0 |
| 169 | + NatGatewayId: !Ref NatGateway1 |
| 170 | + |
| 171 | + PrivateSubnet1RouteTableAssociation: |
| 172 | + Type: AWS::EC2::SubnetRouteTableAssociation |
| 173 | + Properties: |
| 174 | + RouteTableId: !Ref PrivateRouteTable1 |
| 175 | + SubnetId: !Ref PrivateSubnet1 |
| 176 | + |
| 177 | + PrivateRouteTable2: |
| 178 | + Type: AWS::EC2::RouteTable |
| 179 | + Properties: |
| 180 | + VpcId: !Ref VPC |
| 181 | + Tags: |
| 182 | + - Key: Name |
| 183 | + Value: !Sub ${EnvironmentName} Private Routes (AZ2) |
| 184 | + |
| 185 | + DefaultPrivateRoute2: |
| 186 | + Type: AWS::EC2::Route |
| 187 | + Properties: |
| 188 | + RouteTableId: !Ref PrivateRouteTable2 |
| 189 | + DestinationCidrBlock: 0.0.0.0/0 |
| 190 | + NatGatewayId: !Ref NatGateway2 |
| 191 | + |
| 192 | + PrivateSubnet2RouteTableAssociation: |
| 193 | + Type: AWS::EC2::SubnetRouteTableAssociation |
| 194 | + Properties: |
| 195 | + RouteTableId: !Ref PrivateRouteTable2 |
| 196 | + SubnetId: !Ref PrivateSubnet2 |
| 197 | + |
| 198 | + NoIngressSecurityGroup: |
| 199 | + Type: AWS::EC2::SecurityGroup |
| 200 | + Properties: |
| 201 | + GroupName: "no-ingress-sg" |
| 202 | + GroupDescription: "Security group with no ingress rule" |
| 203 | + VpcId: !Ref VPC |
| 204 | + |
| 205 | +Outputs: |
| 206 | + VPC: |
| 207 | + Description: A reference to the created VPC |
| 208 | + Value: !Ref VPC |
| 209 | + |
| 210 | + PublicSubnets: |
| 211 | + Description: A list of the public subnets |
| 212 | + Value: !Join [ ",", [ !Ref PublicSubnet1, !Ref PublicSubnet2 ]] |
| 213 | + |
| 214 | + PrivateSubnets: |
| 215 | + Description: A list of the private subnets |
| 216 | + Value: !Join [ ",", [ !Ref PrivateSubnet1, !Ref PrivateSubnet2 ]] |
| 217 | + |
| 218 | + PublicSubnet1: |
| 219 | + Description: A reference to the public subnet in the 1st Availability Zone |
| 220 | + Value: !Ref PublicSubnet1 |
| 221 | + |
| 222 | + PublicSubnet2: |
| 223 | + Description: A reference to the public subnet in the 2nd Availability Zone |
| 224 | + Value: !Ref PublicSubnet2 |
| 225 | + |
| 226 | + PrivateSubnet1: |
| 227 | + Description: A reference to the private subnet in the 1st Availability Zone |
| 228 | + Value: !Ref PrivateSubnet1 |
| 229 | + |
| 230 | + PrivateSubnet2: |
| 231 | + Description: A reference to the private subnet in the 2nd Availability Zone |
| 232 | + Value: !Ref PrivateSubnet2 |
| 233 | + |
| 234 | + NoIngressSecurityGroup: |
| 235 | + Description: Security group with no ingress rule |
| 236 | + Value: !Ref NoIngressSecurityGroup |
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