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NEW: vpc-subnet

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xpk 2020-04-23 10:36:56 +08:00
parent d34a298bd1
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26
terraform/aws-vpc/README.md Normal file
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# Terraform config for creating VPC and subnets
These config will create the following resources on AWS. The VPC CIDR is hard-coded as 10.0.0.0/16. The number of subnets are also hard-coded. The subnets will sit in different availablity zones for redundancy.
* 1 VPC
* 2 public subnets
* 2 private subnets
* 1 internet gateway
* 1 nat gateway
## Variables to TF
These are required variables:
```
aws_access_key = "redacted"
aws_secret_key = "redacted"
aws_region = "ap-southeast-1"
resource_prefix = "project1-dev"
```
## TF graph
Here is what the graph looks like
![tf graph](https://raw.githubusercontent.com/xpertkn/terraform/master/tfgraph.png?raw=true)
## Revision notes
* Previously terraform plan would fail to compute the count for routing table association. This is now corrected by hard-coding count to 2.

9
terraform/aws-vpc/provider.tf Normal file
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variable "aws_access_key" {}
variable "aws_secret_key" {}
variable "aws_region" {}
provider "aws" {
access_key = "${var.aws_access_key}"
secret_key = "${var.aws_secret_key}"
region = "${var.aws_region}"
}

595
terraform/aws-vpc/terraform.tfstate.backup Normal file
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{
"version": 3,
"terraform_version": "0.11.13",
"serial": 4,
"lineage": "2078336f-aaf6-375a-bfc8-045cd3bf03c2",
"modules": [
{
"path": [
"root"
],
"outputs": {
"NGW IP": {
"sensitive": false,
"type": "string",
"value": "18.163.252.7"
}
},
"resources": {
"aws_eip.ngw1-eip": {
"type": "aws_eip",
"depends_on": [],
"primary": {
"id": "eipalloc-04938bc3a57bce4a2",
"attributes": {
"association_id": "eipassoc-bc0224fa",
"domain": "vpc",
"id": "eipalloc-04938bc3a57bce4a2",
"instance": "",
"network_interface": "eni-0b1dbb3b71e054dbd",
"private_dns": "ip-10-10-1-250.ap-east-1.compute.internal",
"private_ip": "10.10.1.250",
"public_dns": "ec2-18-163-252-7.ap-east-1.compute.amazonaws.com",
"public_ip": "18.163.252.7",
"public_ipv4_pool": "amazon",
"tags.%": "4",
"tags.Environment": "KFLAB",
"tags.TerraformMode": "InitialDeploymentOnly",
"tags.TerraformiCliVersion": "0.12.24",
"tags.Ticket": "NotApplicable",
"vpc": "true"
},
"meta": {
"e2bfb730-ecaa-11e6-8f88-34363bc7c4c0": {
"delete": 180000000000,
"read": 900000000000,
"update": 300000000000
}
},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"aws_internet_gateway.igw1": {
"type": "aws_internet_gateway",
"depends_on": [
"aws_vpc.tf-vpc1"
],
"primary": {
"id": "igw-06ca78478fe064251",
"attributes": {
"id": "igw-06ca78478fe064251",
"owner_id": "531700196402",
"tags.%": "5",
"tags.Environment": "KFLAB",
"tags.Name": "IGW1",
"tags.TerraformMode": "InitialDeploymentOnly",
"tags.TerraformiCliVersion": "0.12.24",
"tags.Ticket": "NotApplicable",
"vpc_id": "vpc-0c53cfb832bc0d080"
},
"meta": {},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"aws_nat_gateway.ngw1": {
"type": "aws_nat_gateway",
"depends_on": [
"aws_eip.ngw1-eip",
"aws_subnet.PublicSubnet"
],
"primary": {
"id": "nat-0a0f567a7b2be1693",
"attributes": {
"allocation_id": "eipalloc-04938bc3a57bce4a2",
"id": "nat-0a0f567a7b2be1693",
"network_interface_id": "eni-0b1dbb3b71e054dbd",
"private_ip": "10.10.1.250",
"public_ip": "18.163.252.7",
"subnet_id": "subnet-0359e673c34f253ba",
"tags.%": "5",
"tags.Environment": "KFLAB",
"tags.Name": "NGW1",
"tags.TerraformMode": "InitialDeploymentOnly",
"tags.TerraformiCliVersion": "0.12.24",
"tags.Ticket": "NotApplicable"
},
"meta": {},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"aws_route_table.PrivateRouteTable": {
"type": "aws_route_table",
"depends_on": [
"aws_nat_gateway.ngw1",
"aws_vpc.tf-vpc1"
],
"primary": {
"id": "rtb-035602b170ef6604c",
"attributes": {
"id": "rtb-035602b170ef6604c",
"owner_id": "531700196402",
"propagating_vgws.#": "0",
"route.#": "1",
"route.435226165.cidr_block": "0.0.0.0/0",
"route.435226165.egress_only_gateway_id": "",
"route.435226165.gateway_id": "",
"route.435226165.instance_id": "",
"route.435226165.ipv6_cidr_block": "",
"route.435226165.nat_gateway_id": "nat-0a0f567a7b2be1693",
"route.435226165.network_interface_id": "",
"route.435226165.transit_gateway_id": "",
"route.435226165.vpc_peering_connection_id": "",
"tags.%": "5",
"tags.Environment": "KFLAB",
"tags.Name": "PrivateRouteTable",
"tags.TerraformMode": "InitialDeploymentOnly",
"tags.TerraformiCliVersion": "0.12.24",
"tags.Ticket": "NotApplicable",
"vpc_id": "vpc-0c53cfb832bc0d080"
},
"meta": {},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"aws_route_table.PublicRouteTable": {
"type": "aws_route_table",
"depends_on": [
"aws_internet_gateway.igw1",
"aws_vpc.tf-vpc1"
],
"primary": {
"id": "rtb-02bcab1779560cc51",
"attributes": {
"id": "rtb-02bcab1779560cc51",
"owner_id": "531700196402",
"propagating_vgws.#": "0",
"route.#": "1",
"route.3444604364.cidr_block": "0.0.0.0/0",
"route.3444604364.egress_only_gateway_id": "",
"route.3444604364.gateway_id": "igw-06ca78478fe064251",
"route.3444604364.instance_id": "",
"route.3444604364.ipv6_cidr_block": "",
"route.3444604364.nat_gateway_id": "",
"route.3444604364.network_interface_id": "",
"route.3444604364.transit_gateway_id": "",
"route.3444604364.vpc_peering_connection_id": "",
"tags.%": "5",
"tags.Environment": "KFLAB",
"tags.Name": "PublicRouteTable",
"tags.TerraformMode": "InitialDeploymentOnly",
"tags.TerraformiCliVersion": "0.12.24",
"tags.Ticket": "NotApplicable",
"vpc_id": "vpc-0c53cfb832bc0d080"
},
"meta": {},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"aws_route_table_association.PrivateRTAsso.0": {
"type": "aws_route_table_association",
"depends_on": [
"aws_route_table.PrivateRouteTable",
"aws_subnet.PrivateSubnet.*",
"data.aws_availability_zones.available"
],
"primary": {
"id": "rtbassoc-05a88207c27bee9da",
"attributes": {
"id": "rtbassoc-05a88207c27bee9da",
"route_table_id": "rtb-035602b170ef6604c",
"subnet_id": "subnet-0c82a60f32ae2f8ad"
},
"meta": {},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"aws_route_table_association.PrivateRTAsso.1": {
"type": "aws_route_table_association",
"depends_on": [
"aws_route_table.PrivateRouteTable",
"aws_subnet.PrivateSubnet.*",
"data.aws_availability_zones.available"
],
"primary": {
"id": "rtbassoc-002a15064a0083a05",
"attributes": {
"id": "rtbassoc-002a15064a0083a05",
"route_table_id": "rtb-035602b170ef6604c",
"subnet_id": "subnet-0d6211fd610aa8938"
},
"meta": {},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"aws_route_table_association.PrivateRTAsso.2": {
"type": "aws_route_table_association",
"depends_on": [
"aws_route_table.PrivateRouteTable",
"aws_subnet.PrivateSubnet.*",
"data.aws_availability_zones.available"
],
"primary": {
"id": "rtbassoc-0da9a81f34ac78df0",
"attributes": {
"id": "rtbassoc-0da9a81f34ac78df0",
"route_table_id": "rtb-035602b170ef6604c",
"subnet_id": "subnet-060093578727b2058"
},
"meta": {},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"aws_route_table_association.PublicRTAsso.0": {
"type": "aws_route_table_association",
"depends_on": [
"aws_route_table.PublicRouteTable",
"aws_subnet.PublicSubnet.*"
],
"primary": {
"id": "rtbassoc-0b7bfd24daa7a7622",
"attributes": {
"id": "rtbassoc-0b7bfd24daa7a7622",
"route_table_id": "rtb-02bcab1779560cc51",
"subnet_id": "subnet-0359e673c34f253ba"
},
"meta": {},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"aws_route_table_association.PublicRTAsso.1": {
"type": "aws_route_table_association",
"depends_on": [
"aws_route_table.PublicRouteTable",
"aws_subnet.PublicSubnet.*"
],
"primary": {
"id": "rtbassoc-06e5d4202f2b6c0af",
"attributes": {
"id": "rtbassoc-06e5d4202f2b6c0af",
"route_table_id": "rtb-02bcab1779560cc51",
"subnet_id": "subnet-09cd2a7b42b29f665"
},
"meta": {},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"aws_route_table_association.PublicRTAsso.2": {
"type": "aws_route_table_association",
"depends_on": [
"aws_route_table.PublicRouteTable",
"aws_subnet.PublicSubnet.*",
"data.aws_availability_zones.available"
],
"primary": {
"id": "rtbassoc-00a613ac12fdbec34",
"attributes": {
"id": "rtbassoc-00a613ac12fdbec34",
"route_table_id": "rtb-02bcab1779560cc51",
"subnet_id": "subnet-08e99844e0eef17c1"
},
"meta": {},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"aws_subnet.PrivateSubnet.0": {
"type": "aws_subnet",
"depends_on": [
"aws_vpc.tf-vpc1",
"data.aws_availability_zones.available"
],
"primary": {
"id": "subnet-0c82a60f32ae2f8ad",
"attributes": {
"arn": "arn:aws:ec2:ap-east-1:531700196402:subnet/subnet-0c82a60f32ae2f8ad",
"assign_ipv6_address_on_creation": "false",
"availability_zone": "ap-east-1a",
"availability_zone_id": "ape1-az1",
"cidr_block": "10.10.21.0/24",
"id": "subnet-0c82a60f32ae2f8ad",
"ipv6_cidr_block": "",
"ipv6_cidr_block_association_id": "",
"map_public_ip_on_launch": "false",
"owner_id": "531700196402",
"tags.%": "5",
"tags.Environment": "KFLAB",
"tags.Name": "PrivateSubnet-1",
"tags.TerraformMode": "InitialDeploymentOnly",
"tags.TerraformiCliVersion": "0.12.24",
"tags.Ticket": "NotApplicable",
"vpc_id": "vpc-0c53cfb832bc0d080"
},
"meta": {
"e2bfb730-ecaa-11e6-8f88-34363bc7c4c0": {
"create": 600000000000,
"delete": 1200000000000
},
"schema_version": "1"
},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"aws_subnet.PrivateSubnet.1": {
"type": "aws_subnet",
"depends_on": [
"aws_vpc.tf-vpc1",
"data.aws_availability_zones.available"
],
"primary": {
"id": "subnet-0d6211fd610aa8938",
"attributes": {
"arn": "arn:aws:ec2:ap-east-1:531700196402:subnet/subnet-0d6211fd610aa8938",
"assign_ipv6_address_on_creation": "false",
"availability_zone": "ap-east-1b",
"availability_zone_id": "ape1-az2",
"cidr_block": "10.10.22.0/24",
"id": "subnet-0d6211fd610aa8938",
"ipv6_cidr_block": "",
"ipv6_cidr_block_association_id": "",
"map_public_ip_on_launch": "false",
"owner_id": "531700196402",
"tags.%": "5",
"tags.Environment": "KFLAB",
"tags.Name": "PrivateSubnet-2",
"tags.TerraformMode": "InitialDeploymentOnly",
"tags.TerraformiCliVersion": "0.12.24",
"tags.Ticket": "NotApplicable",
"vpc_id": "vpc-0c53cfb832bc0d080"
},
"meta": {
"e2bfb730-ecaa-11e6-8f88-34363bc7c4c0": {
"create": 600000000000,
"delete": 1200000000000
},
"schema_version": "1"
},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"aws_subnet.PrivateSubnet.2": {
"type": "aws_subnet",
"depends_on": [
"aws_vpc.tf-vpc1",
"data.aws_availability_zones.available"
],
"primary": {
"id": "subnet-060093578727b2058",
"attributes": {
"arn": "arn:aws:ec2:ap-east-1:531700196402:subnet/subnet-060093578727b2058",
"assign_ipv6_address_on_creation": "false",
"availability_zone": "ap-east-1c",
"availability_zone_id": "ape1-az3",
"cidr_block": "10.10.23.0/24",
"id": "subnet-060093578727b2058",
"ipv6_cidr_block": "",
"ipv6_cidr_block_association_id": "",
"map_public_ip_on_launch": "false",
"owner_id": "531700196402",
"tags.%": "5",
"tags.Environment": "KFLAB",
"tags.Name": "PrivateSubnet-3",
"tags.TerraformMode": "InitialDeploymentOnly",
"tags.TerraformiCliVersion": "0.12.24",
"tags.Ticket": "NotApplicable",
"vpc_id": "vpc-0c53cfb832bc0d080"
},
"meta": {
"e2bfb730-ecaa-11e6-8f88-34363bc7c4c0": {
"create": 600000000000,
"delete": 1200000000000
},
"schema_version": "1"
},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"aws_subnet.PublicSubnet.0": {
"type": "aws_subnet",
"depends_on": [
"aws_vpc.tf-vpc1",
"data.aws_availability_zones.available"
],
"primary": {
"id": "subnet-0359e673c34f253ba",
"attributes": {
"arn": "arn:aws:ec2:ap-east-1:531700196402:subnet/subnet-0359e673c34f253ba",
"assign_ipv6_address_on_creation": "false",
"availability_zone": "ap-east-1a",
"availability_zone_id": "ape1-az1",
"cidr_block": "10.10.1.0/24",
"id": "subnet-0359e673c34f253ba",
"ipv6_cidr_block": "",
"ipv6_cidr_block_association_id": "",
"map_public_ip_on_launch": "false",
"owner_id": "531700196402",
"tags.%": "5",
"tags.Environment": "KFLAB",
"tags.Name": "PublicSubnet-1",
"tags.TerraformMode": "InitialDeploymentOnly",
"tags.TerraformiCliVersion": "0.12.24",
"tags.Ticket": "NotApplicable",
"vpc_id": "vpc-0c53cfb832bc0d080"
},
"meta": {
"e2bfb730-ecaa-11e6-8f88-34363bc7c4c0": {
"create": 600000000000,
"delete": 1200000000000
},
"schema_version": "1"
},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"aws_subnet.PublicSubnet.1": {
"type": "aws_subnet",
"depends_on": [
"aws_vpc.tf-vpc1",
"data.aws_availability_zones.available"
],
"primary": {
"id": "subnet-09cd2a7b42b29f665",
"attributes": {
"arn": "arn:aws:ec2:ap-east-1:531700196402:subnet/subnet-09cd2a7b42b29f665",
"assign_ipv6_address_on_creation": "false",
"availability_zone": "ap-east-1b",
"availability_zone_id": "ape1-az2",
"cidr_block": "10.10.2.0/24",
"id": "subnet-09cd2a7b42b29f665",
"ipv6_cidr_block": "",
"ipv6_cidr_block_association_id": "",
"map_public_ip_on_launch": "false",
"owner_id": "531700196402",
"tags.%": "5",
"tags.Environment": "KFLAB",
"tags.Name": "PublicSubnet-2",
"tags.TerraformMode": "InitialDeploymentOnly",
"tags.TerraformiCliVersion": "0.12.24",
"tags.Ticket": "NotApplicable",
"vpc_id": "vpc-0c53cfb832bc0d080"
},
"meta": {
"e2bfb730-ecaa-11e6-8f88-34363bc7c4c0": {
"create": 600000000000,
"delete": 1200000000000
},
"schema_version": "1"
},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"aws_subnet.PublicSubnet.2": {
"type": "aws_subnet",
"depends_on": [
"aws_vpc.tf-vpc1",
"data.aws_availability_zones.available"
],
"primary": {
"id": "subnet-08e99844e0eef17c1",
"attributes": {
"arn": "arn:aws:ec2:ap-east-1:531700196402:subnet/subnet-08e99844e0eef17c1",
"assign_ipv6_address_on_creation": "false",
"availability_zone": "ap-east-1c",
"availability_zone_id": "ape1-az3",
"cidr_block": "10.10.3.0/24",
"id": "subnet-08e99844e0eef17c1",
"ipv6_cidr_block": "",
"ipv6_cidr_block_association_id": "",
"map_public_ip_on_launch": "false",
"owner_id": "531700196402",
"tags.%": "5",
"tags.Environment": "KFLAB",
"tags.Name": "PublicSubnet-3",
"tags.TerraformMode": "InitialDeploymentOnly",
"tags.TerraformiCliVersion": "0.12.24",
"tags.Ticket": "NotApplicable",
"vpc_id": "vpc-0c53cfb832bc0d080"
},
"meta": {
"e2bfb730-ecaa-11e6-8f88-34363bc7c4c0": {
"create": 600000000000,
"delete": 1200000000000
},
"schema_version": "1"
},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"aws_vpc.tf-vpc1": {
"type": "aws_vpc",
"depends_on": [],
"primary": {
"id": "vpc-0c53cfb832bc0d080",
"attributes": {
"arn": "arn:aws:ec2:ap-east-1:531700196402:vpc/vpc-0c53cfb832bc0d080",
"assign_generated_ipv6_cidr_block": "false",
"cidr_block": "10.10.0.0/16",
"default_network_acl_id": "acl-0619fe30f30c120f7",
"default_route_table_id": "rtb-01ddf6c0372c94c6e",
"default_security_group_id": "sg-00650318d4a720af8",
"dhcp_options_id": "dopt-72e2071b",
"enable_dns_hostnames": "false",
"enable_dns_support": "true",
"id": "vpc-0c53cfb832bc0d080",
"instance_tenancy": "default",
"ipv6_association_id": "",
"ipv6_cidr_block": "",
"main_route_table_id": "rtb-01ddf6c0372c94c6e",
"owner_id": "531700196402",
"tags.%": "5",
"tags.Environment": "KFLAB",
"tags.Name": "KFLAB",
"tags.TerraformMode": "InitialDeploymentOnly",
"tags.TerraformiCliVersion": "0.12.24",
"tags.Ticket": "NotApplicable"
},
"meta": {
"schema_version": "1"
},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
},
"data.aws_availability_zones.available": {
"type": "aws_availability_zones",
"depends_on": [],
"primary": {
"id": "2020-04-23 02:00:46.293950735 +0000 UTC",
"attributes": {
"group_names.#": "1",
"group_names.1219861030": "ap-east-1",
"id": "2020-04-23 02:00:46.293950735 +0000 UTC",
"names.#": "3",
"names.0": "ap-east-1a",
"names.1": "ap-east-1b",
"names.2": "ap-east-1c",
"state": "available",
"zone_ids.#": "3",
"zone_ids.0": "ape1-az1",
"zone_ids.1": "ape1-az2",
"zone_ids.2": "ape1-az3"
},
"meta": {},
"tainted": false
},
"deposed": [],
"provider": "provider.aws"
}
},
"depends_on": []
}
]
}

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terraform/aws-vpc/vpc-subnets.tf Normal file
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/* Hard coded values
DPTicket tag
Terraform version
VPC name tag
VPC CIDR
Subnet octets
*/
terraform {
required_version = ">= 0.9.9"
}
variable "globalTags" {
type = "map"
default {
"Environment" = "KFLAB"
"TerraformiCliVersion" = "0.12.24"
"TerraformMode" = "InitialDeploymentOnly"
"Ticket" = "NotApplicable"
}
}
variable "resource_prefix" {
default = "unspecified"
}
# VPC
resource "aws_vpc" "tf-vpc1" {
cidr_block = "10.10.0.0/16"
tags = "${merge(var.globalTags, map("Name","KFLAB"))}"
}
# Get all AZs
data "aws_availability_zones" "available" {
state = "available"
}
# 2 az, 1 public subnet in each
resource "aws_subnet" "PublicSubnet" {
vpc_id = "${aws_vpc.tf-vpc1.id}"
cidr_block = "10.10.${count.index + 1}.0/24"
availability_zone = "${data.aws_availability_zones.available.names[count.index]}"
tags = "${merge(var.globalTags, map("Name","PublicSubnet-${count.index + 1}"))}"
count = "${length(data.aws_availability_zones.available.names)}"
}
# 2 az, 1 private subnet in each
resource "aws_subnet" "PrivateSubnet" {
vpc_id = "${aws_vpc.tf-vpc1.id}"
cidr_block = "10.10.${count.index + 21}.0/24"
availability_zone = "${data.aws_availability_zones.available.names[count.index]}"
tags = "${merge(var.globalTags, map("Name","PrivateSubnet-${count.index + 1}"))}"
count = "${length(data.aws_availability_zones.available.names)}"
}
# IGW
resource "aws_internet_gateway" "igw1" {
vpc_id = "${aws_vpc.tf-vpc1.id}"
tags = "${merge(var.globalTags, map("Name","IGW1"))}"
}
# Public RT
resource "aws_route_table" "PublicRouteTable" {
vpc_id = "${aws_vpc.tf-vpc1.id}"
route {
cidr_block = "0.0.0.0/0"
gateway_id = "${aws_internet_gateway.igw1.id}"
}
tags = "${merge(var.globalTags, map("Name","PublicRouteTable"))}"
}
# Associate Public RT
resource "aws_route_table_association" "PublicRTAsso" {
subnet_id = "${element(aws_subnet.PublicSubnet.*.id, count.index)}"
route_table_id = "${aws_route_table.PublicRouteTable.id}"
count = "${length(data.aws_availability_zones.available.names)}"
}
# NAT Gateway
resource "aws_eip" "ngw1-eip" {
vpc = true
tags = "${var.globalTags}"
}
resource "aws_nat_gateway" "ngw1" {
allocation_id = "${aws_eip.ngw1-eip.id}"
subnet_id = "${aws_subnet.PublicSubnet.0.id}"
tags = "${merge(var.globalTags, map("Name","NGW1"))}"
}
# Private RT
resource "aws_route_table" "PrivateRouteTable" {
vpc_id = "${aws_vpc.tf-vpc1.id}"
route {
cidr_block = "0.0.0.0/0"
nat_gateway_id = "${aws_nat_gateway.ngw1.id}"
}
tags = "${merge(var.globalTags, map("Name","PrivateRouteTable"))}"
}
# Associate Private RT
resource "aws_route_table_association" "PrivateRTAsso" {
subnet_id = "${element(aws_subnet.PrivateSubnet.*.id, count.index)}"
route_table_id = "${aws_route_table.PrivateRouteTable.id}"
count = "${length(data.aws_availability_zones.available.names)}"
}
output "NGW IP" {
value = "${aws_nat_gateway.ngw1.public_ip}"
}