aws-morocco-samples/inter-region-privatelink/main.tf at main · AWS-Morocco-Examples/aws-morocco-samples · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
#######################################################
##  setup VPCs: service_provider_vpc in us-east-1
##  and service_provider_outpost vpc in us-west-2
##  and service_consumer_vpc also in us-west-2
#######################################################

module "vpc_service_provider" {
  source = "terraform-aws-modules/vpc/aws"
  name   = "awsmorocco_service_provider_vpc"
  cidr   = "10.10.0.0/16"

  azs             = ["us-east-1a"]
  private_subnets = ["10.10.1.0/24"]
  public_subnets  = ["10.10.2.0/24"]

  enable_nat_gateway = true
  single_nat_gateway = true

  enable_dns_hostnames = true
  enable_dns_support   = true

  providers = {
    aws = aws.service_provider
  }
}

module "vpc_service_provider_outpost" {
  source = "terraform-aws-modules/vpc/aws"
  name   = "awsmorocco_service_provider_outpost"
  cidr   = "10.11.0.0/16"

  azs             = ["us-west-2a"]
  private_subnets = ["10.11.1.0/24"]
  public_subnets  = ["10.11.2.0/24"]

  enable_nat_gateway = true
  single_nat_gateway = true

  enable_dns_hostnames = true
  enable_dns_support   = true

  providers = {
    aws = aws.service_provider_outpost
  }
}

module "vpc_service_consumer" {
  source = "terraform-aws-modules/vpc/aws"
  name   = "awsmorocco_service_consumer"
  cidr   = "10.2.0.0/16"

  azs                = ["us-west-2a"]
  private_subnets    = ["10.12.1.0/24"]
  public_subnets     = ["10.12.2.0/24"]
  enable_nat_gateway = true
  single_nat_gateway = true

  enable_dns_hostnames = true
  enable_dns_support   = true

  providers = {
    aws = aws.consumer
  }
}

#######################################################
##  PrivateLink Setup
#######################################################

data "aws_caller_identity" "current" {}

resource "aws_lb" "nlb" {
  name               = "service-provider-nlb"
  internal           = true
  load_balancer_type = "network"
  subnets            = module.vpc_service_provider.private_subnets

  enable_deletion_protection = false

  provider = aws.service_provider_outpost
}

resource "aws_vpc_endpoint_service" "this" {
  acceptance_required        = false
  network_load_balancer_arns = [aws_lb.nlb.arn]

  provider = aws.service_provider_outpost
}

resource "aws_vpc_endpoint_service_allowed_principal" "this" {
  vpc_endpoint_service_id = aws_vpc_endpoint_service.this.id
  principal_arn           = data.aws_caller_identity.current.arn

  provider = aws.service_provider_outpost
}

resource "aws_vpc_endpoint" "this" {
  service_name      = aws_vpc_endpoint_service.this.service_name
  subnet_ids        = module.vpc_service_consumer.private_subnets
  vpc_endpoint_type = "Interface"
  vpc_id            = module.vpc_service_consumer.vpc_id

  provider = aws.consumer
}

#######################################################
##  Peering Configuration between service_provider_vpc
##  and service_provider_outpost vpc
#######################################################

resource "aws_vpc_peering_connection" "this" {
  vpc_id      = module.vpc_service_provider_outpost.vpc_id
  peer_vpc_id = module.vpc_service_provider.vpc_id
  peer_region = "us-east-1"
  auto_accept = false

  provider = aws.service_provider_outpost
}

resource "aws_vpc_peering_connection_accepter" "this" {
  provider                  = aws.service_provider
  vpc_peering_connection_id = aws_vpc_peering_connection.this.id
  auto_accept               = true
}

resource "aws_vpc_peering_connection_options" "this" {
  vpc_peering_connection_id = aws_vpc_peering_connection.this.id
  accepter {
    allow_remote_vpc_dns_resolution = true
  }

  provider = aws.service_provider
}

locals {
  requester_route_tables_ids = concat(module.vpc_service_provider_outpost.public_route_table_ids, module.vpc_service_provider_outpost.private_route_table_ids)
  accepter_route_tables_ids  = concat(module.vpc_service_provider.public_route_table_ids, module.vpc_service_provider.private_route_table_ids)
}

resource "aws_route" "requester" {
  count                     = length(local.requester_route_tables_ids)
  route_table_id            = local.requester_route_tables_ids[count.index]
  destination_cidr_block    = module.vpc_service_provider.vpc_cidr_block
  vpc_peering_connection_id = aws_vpc_peering_connection.this.id

  provider = aws.service_provider_outpost
}

resource "aws_route" "accepter" {
  count                     = length(local.accepter_route_tables_ids)
  route_table_id            = local.accepter_route_tables_ids[count.index]
  destination_cidr_block    = module.vpc_service_provider_outpost.vpc_cidr_block
  vpc_peering_connection_id = aws_vpc_peering_connection.this.id

  provider = aws.service_provider
}