add dns stuff, readme for vpc-additional-peer

examples/dns-vpc-region-vpcN/apps/dns/.terraform-docs.yml

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+formatter: markdown table
+
+header-from: main.tf
+footer-from: ""
+
+sections:
+##  hide: []
+  show: 
+    - data-sources
+    - header
+    - footer
+    - inputs
+    - modules
+    - outputs
+    - providers
+    - requirements
+    - resources
+
+output:
+  file: README.md
+  mode: inject
+  template: |-
+    <!-- BEGIN_TF_DOCS -->
+    {{ .Content }}
+    <!-- END_TF_DOCS -->
+
+## output-values:
+##   enabled: false
+##   from: ""
+## 
+## sort:
+##   enabled: true
+##   by: name
+## 
+## settings:
+##   anchor: true
+##   color: true
+##   default: true
+##   description: false
+##   escape: true
+##   indent: 2
+##   required: true
+##   sensitive: true
+##   type: true

examples/dns-vpc-region-vpcN/apps/dns/README.md

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+<!-- BEGIN_TF_DOCS -->
+## Requirements
+
+No requirements.
+
+## Providers
+
+| Name | Version |
+|------|---------|
+| <a name="provider_aws"></a> [aws](#provider\_aws) | n/a |
+| <a name="provider_aws.east_main_dns"></a> [aws.east\_main\_dns](#provider\_aws.east\_main\_dns) | n/a |
+| <a name="provider_aws.west_main_dns"></a> [aws.west\_main\_dns](#provider\_aws.west\_main\_dns) | n/a |
+
+## Modules
+
+No modules.
+
+## Resources
+
+| Name | Type |
+|------|------|
+| [aws_route53_resolver_rule_association.all_rules](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/route53_resolver_rule_association) | resource |
+| [aws_route53_vpc_association_authorization.east_domain_zone](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/route53_vpc_association_authorization) | resource |
+| [aws_route53_vpc_association_authorization.east_ptr_zone](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/route53_vpc_association_authorization) | resource |
+| [aws_route53_vpc_association_authorization.west_domain_zone](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/route53_vpc_association_authorization) | resource |
+| [aws_route53_vpc_association_authorization.west_ptr_zone](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/route53_vpc_association_authorization) | resource |
+| [aws_route53_zone.domain_zone](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/route53_zone) | resource |
+| [aws_route53_zone.ptr_zone](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/route53_zone) | resource |
+| [aws_route53_zone_association.east_domain_zone](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/route53_zone_association) | resource |
+| [aws_route53_zone_association.east_ptr_zone](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/route53_zone_association) | resource |
+| [aws_route53_zone_association.west_domain_zone](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/route53_zone_association) | resource |
+| [aws_route53_zone_association.west_ptr_zone](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/route53_zone_association) | resource |
+| [aws_route53_resolver_rules.all_rules](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/route53_resolver_rules) | data source |
+| [aws_route53_zone.domain_zone](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/route53_zone) | data source |
+
+## Inputs
+
+| Name | Description | Type | Default | Required |
+|------|-------------|------|---------|:--------:|
+| <a name="input_dns_zone_create"></a> [dns\_zone\_create](#input\_dns\_zone\_create) | Flag determing to create (true) or associate (false) the main forward zone.  Used for the same VPC domain name across different regions or VPCs | `bool` | `true` | no |
+| <a name="input_dns_zone_description_prefix"></a> [dns\_zone\_description\_prefix](#input\_dns\_zone\_description\_prefix) | Zone description with the org-project-program-environment | `string` | `""` | no |
+| <a name="input_main_dns_profile"></a> [main\_dns\_profile](#input\_main\_dns\_profile) | Profile name for AWS for the main DNS central account | `string` | `"107742151971-do2-govcloud"` | no |
+| <a name="input_main_dns_vpcs"></a> [main\_dns\_vpcs](#input\_main\_dns\_vpcs) | Map of region and VPC ids of the vpc1-services in us-gov-west-1 and us-gov-east-1 for centralized DNS | `map(string)` | <pre>{<br>  "us-gov-east-1": "vpc-099a991da7c4eb8a5",<br>  "us-gov-west-1": "vpc-77877a12"<br>}</pre> | no |
+
+## Outputs
+
+| Name | Description |
+|------|-------------|
+| <a name="output_all_zones"></a> [all\_zones](#output\_all\_zones) | DNS zone list |
+| <a name="output_domain_zone_id"></a> [domain\_zone\_id](#output\_domain\_zone\_id) | DNS Zone ID |
+| <a name="output_domain_zone_ns"></a> [domain\_zone\_ns](#output\_domain\_zone\_ns) | DNS Zone Nameservers |
+| <a name="output_ptr_zone_id"></a> [ptr\_zone\_id](#output\_ptr\_zone\_id) | DNS PTR Zone IDs |
+| <a name="output_ptr_zone_info"></a> [ptr\_zone\_info](#output\_ptr\_zone\_info) | DNS PTR Zone Info |
+| <a name="output_ptr_zone_ns"></a> [ptr\_zone\_ns](#output\_ptr\_zone\_ns) | DNS PTR Zone Nameservers |
+<!-- END_TF_DOCS -->

examples/dns-vpc-region-vpcN/apps/dns/associate-shared.tf

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+## locals {
+##   reverse_zones = flatten([
+##     "10.in-addr.arpa",
+##     "168.192.in-addr.arpa",
+##     "129.148.in-addr.arpa",
+##     [for x in range(16, 32) : format("%v.172.in-addr.arpa", x)],
+##   ])
+##   reverse_rules  = formatlist("reverse-%v", local.reverse_zones)
+##   forward_rules  = ["forward-all-onprem", "amazon"]
+##   all_main_rules = formatlist("resolver-%v", concat(local.forward_rules, local.reverse_rules))
+## }
+
+data "aws_route53_resolver_rules" "all_rules" {
+  share_status = "SHARED_WITH_ME"
+}
+
+resource "aws_route53_resolver_rule_association" "all_rules" {
+  for_each         = toset(data.aws_route53_resolver_rules.all_rules.resolver_rule_ids)
+  resolver_rule_id = each.key
+  vpc_id           = local.vpc_id
+}

examples/dns-vpc-region-vpcN/apps/dns/locals.tf

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+locals {
+  base_tags = {
+    "boc:created_by" = "terraform"
+  }
+}
+
+locals {
+  vpc_info       = data.terraform_remote_state.vpc_west_vpc1.outputs.vpc_info
+  vpc_id         = local.vpc_info["vpc_id"]
+  domain_name    = local.vpc_info["vpc_domain_name"]
+  dns_servers    = local.vpc_info["vpc_dns_servers"]
+  vpc_short_name = local.vpc_info["vpc_short_name"]
+}

examples/dns-vpc-region-vpcN/apps/dns/provider.main_dns.tf

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+provider "aws" {
+  alias   = "east_main_dns"
+  region  = var.region_map["east"]
+  profile = var.main_dns_profile
+}
+
+provider "aws" {
+  alias   = "west_main_dns"
+  region  = var.region_map["west"]
+  profile = var.main_dns_profile
+}

examples/dns-vpc-region-vpcN/apps/dns/region.tf

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+locals {
+  region = var.region
+}

examples/dns-vpc-region-vpcN/apps/dns/sort-ip.py

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+#!/bin/env python
+
+import json
+import sys
+import ipaddress
+
+r=0
+outdata={'ip_addresses_sorted':''}
+try:
+  indata=json.load(sys.stdin)
+  ipa=indata['ip_addresses'].split(',')
+  ips=sorted(ipa,key=ipaddress.ip_address)
+  outdata['ip_addresses_sorted']=','.join(ips)
+  print(json.dumps(outdata))
+except:
+  sys.stderr.write("unable to parse input address\n")
+  r=1
+
+sys.exit(r)

examples/dns-vpc-region-vpcN/apps/dns/tf-run.data

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+VERSION 1.1.0
+REMOTE-STATE
+COMMAND tf-directory-setup.py -l none -f
+COMMAND setup-new-directory.sh
+COMMAND tf-init -upgrade
+# COMMAND mv records.tf records.tf.later
+# ALL
+# COMMAND mv records.tf.later records.tf
+ALL
+COMMAND tf-directory-setup.py -l s3

examples/dns-vpc-region-vpcN/apps/dns/variables.dns.tf

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+variable "main_dns_vpcs" {
+  description = "Map of region and VPC ids of the vpc1-services in us-gov-west-1 and us-gov-east-1 for centralized DNS"
+  type        = map(string)
+  default = {
+    "us-gov-west-1" = "vpc-77877a12"
+    "us-gov-east-1" = "vpc-099a991da7c4eb8a5"
+  }
+}
+
+variable "main_dns_profile" {
+  description = "Profile name for AWS for the main DNS central account"
+  type        = string
+  default     = "107742151971-do2-govcloud"
+}
+
+
+variable "dns_zone_description_prefix" {
+  description = "Zone description with the org-project-program-environment"
+  type        = string
+  default     = ""
+}
+
+variable "dns_zone_create" {
+  description = "Flag determing to create (true) or associate (false) the main forward zone.  Used for the same VPC domain name across different regions or VPCs"
+  type        = bool
+  default     = true
+}