forked from terraform-aws-modules/terraform-aws-eks
-
Notifications
You must be signed in to change notification settings - Fork 0
/
main.tf
197 lines (156 loc) · 6.74 KB
/
main.tf
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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
resource "aws_cloudwatch_log_group" "this" {
count = length(var.cluster_enabled_log_types) > 0 && var.create_eks ? 1 : 0
name = "/aws/eks/${var.cluster_name}/cluster"
retention_in_days = var.cluster_log_retention_in_days
kms_key_id = var.cluster_log_kms_key_id
tags = var.tags
}
resource "aws_eks_cluster" "this" {
count = var.create_eks ? 1 : 0
name = var.cluster_name
enabled_cluster_log_types = var.cluster_enabled_log_types
role_arn = local.cluster_iam_role_arn
version = var.cluster_version
vpc_config {
security_group_ids = compact([local.cluster_security_group_id])
subnet_ids = var.subnets
endpoint_private_access = var.cluster_endpoint_private_access
endpoint_public_access = var.cluster_endpoint_public_access
public_access_cidrs = var.cluster_endpoint_public_access_cidrs
}
kubernetes_network_config {
service_ipv4_cidr = var.cluster_service_ipv4_cidr
}
dynamic "encryption_config" {
for_each = toset(var.cluster_encryption_config)
content {
provider {
key_arn = encryption_config.value["provider_key_arn"]
}
resources = encryption_config.value["resources"]
}
}
tags = merge(
var.tags,
var.cluster_tags,
)
timeouts {
create = var.cluster_create_timeout
delete = var.cluster_delete_timeout
update = var.cluster_update_timeout
}
depends_on = [
aws_security_group_rule.cluster_egress_internet,
aws_security_group_rule.cluster_https_worker_ingress,
aws_iam_role_policy_attachment.cluster_AmazonEKSClusterPolicy,
aws_iam_role_policy_attachment.cluster_AmazonEKSServicePolicy,
aws_iam_role_policy_attachment.cluster_AmazonEKSVPCResourceControllerPolicy,
aws_cloudwatch_log_group.this
]
}
resource "aws_security_group" "cluster" {
count = var.cluster_create_security_group && var.create_eks ? 1 : 0
name_prefix = var.cluster_name
description = "EKS cluster security group."
vpc_id = var.vpc_id
tags = merge(
var.tags,
{
"Name" = "${var.cluster_name}-eks_cluster_sg"
},
)
}
resource "aws_security_group_rule" "cluster_egress_internet" {
count = var.cluster_create_security_group && var.create_eks ? 1 : 0
description = "Allow cluster egress access to the Internet."
protocol = "-1"
security_group_id = local.cluster_security_group_id
cidr_blocks = var.cluster_egress_cidrs
from_port = 0
to_port = 0
type = "egress"
}
resource "aws_security_group_rule" "cluster_https_worker_ingress" {
count = var.cluster_create_security_group && var.create_eks && var.worker_create_security_group ? 1 : 0
description = "Allow pods to communicate with the EKS cluster API."
protocol = "tcp"
security_group_id = local.cluster_security_group_id
source_security_group_id = local.worker_security_group_id
from_port = 443
to_port = 443
type = "ingress"
}
resource "aws_security_group_rule" "cluster_private_access_cidrs_source" {
for_each = var.create_eks && var.cluster_create_endpoint_private_access_sg_rule && var.cluster_endpoint_private_access && var.cluster_endpoint_private_access_cidrs != null ? toset(var.cluster_endpoint_private_access_cidrs) : []
description = "Allow private K8S API ingress from custom CIDR source."
type = "ingress"
from_port = 443
to_port = 443
protocol = "tcp"
cidr_blocks = [each.value]
security_group_id = aws_eks_cluster.this[0].vpc_config[0].cluster_security_group_id
}
resource "aws_security_group_rule" "cluster_private_access_sg_source" {
count = var.create_eks && var.cluster_create_endpoint_private_access_sg_rule && var.cluster_endpoint_private_access && var.cluster_endpoint_private_access_sg != null ? length(var.cluster_endpoint_private_access_sg) : 0
description = "Allow private K8S API ingress from custom Security Groups source."
type = "ingress"
from_port = 443
to_port = 443
protocol = "tcp"
source_security_group_id = var.cluster_endpoint_private_access_sg[count.index]
security_group_id = aws_eks_cluster.this[0].vpc_config[0].cluster_security_group_id
}
resource "aws_iam_role" "cluster" {
count = var.manage_cluster_iam_resources && var.create_eks ? 1 : 0
name_prefix = var.cluster_iam_role_name != "" ? null : var.cluster_name
name = var.cluster_iam_role_name != "" ? var.cluster_iam_role_name : null
assume_role_policy = data.aws_iam_policy_document.cluster_assume_role_policy.json
permissions_boundary = var.permissions_boundary
path = var.iam_path
force_detach_policies = true
tags = var.tags
}
resource "aws_iam_role_policy_attachment" "cluster_AmazonEKSClusterPolicy" {
count = var.manage_cluster_iam_resources && var.create_eks ? 1 : 0
policy_arn = "${local.policy_arn_prefix}/AmazonEKSClusterPolicy"
role = local.cluster_iam_role_name
}
resource "aws_iam_role_policy_attachment" "cluster_AmazonEKSServicePolicy" {
count = var.manage_cluster_iam_resources && var.create_eks ? 1 : 0
policy_arn = "${local.policy_arn_prefix}/AmazonEKSServicePolicy"
role = local.cluster_iam_role_name
}
resource "aws_iam_role_policy_attachment" "cluster_AmazonEKSVPCResourceControllerPolicy" {
count = var.manage_cluster_iam_resources && var.create_eks ? 1 : 0
policy_arn = "${local.policy_arn_prefix}/AmazonEKSVPCResourceController"
role = local.cluster_iam_role_name
}
/*
Adding a policy to cluster IAM role that allow permissions
required to create AWSServiceRoleForElasticLoadBalancing service-linked role by EKS during ELB provisioning
*/
data "aws_iam_policy_document" "cluster_elb_sl_role_creation" {
count = var.manage_cluster_iam_resources && var.create_eks ? 1 : 0
statement {
effect = "Allow"
actions = [
"ec2:DescribeAccountAttributes",
"ec2:DescribeInternetGateways",
"ec2:DescribeAddresses"
]
resources = ["*"]
}
}
resource "aws_iam_policy" "cluster_elb_sl_role_creation" {
count = var.manage_cluster_iam_resources && var.create_eks ? 1 : 0
name_prefix = "${var.cluster_name}-elb-sl-role-creation"
description = "Permissions for EKS to create AWSServiceRoleForElasticLoadBalancing service-linked role"
policy = data.aws_iam_policy_document.cluster_elb_sl_role_creation[0].json
path = var.iam_path
tags = var.tags
}
resource "aws_iam_role_policy_attachment" "cluster_elb_sl_role_creation" {
count = var.manage_cluster_iam_resources && var.create_eks ? 1 : 0
policy_arn = aws_iam_policy.cluster_elb_sl_role_creation[0].arn
role = local.cluster_iam_role_name
}