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Added IAM role for amazon-cloudwatch-observability add-on of eks cluster #467

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Added IAM role for amazon-cloudwatch-observability add-on of eks cluster #467

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87db6a8
Added IAM role for amazon-cloudwatch-observability add-on of eks cluster
surendra-yelavarthi May 21, 2024
0c3bed8
Added IAM role for amazon-cloudwatch-observability add-on of eks clus…
surendra-yelavarthi May 21, 2024
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32 changes: 31 additions & 1 deletion terraform-modules/aws/eks/main.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@ locals {
resolve_conflicts_on_update = v.resolve_conflicts_on_update
preserve = v.preserve
timeouts = v.timeouts
service_account_role_arn = (k == "aws-ebs-csi-driver" ? data.aws_iam_role.eks_csi_driver.arn : k == "vpc-cni" ? data.aws_iam_role.eks_cni_driver.arn : null)
service_account_role_arn = (k == "aws-ebs-csi-driver" ? data.aws_iam_role.eks_csi_driver.arn : k == "vpc-cni" ? data.aws_iam_role.eks_cni_driver.arn : k == "amazon-cloudwatch-observability" ? data.aws_iam_role.eks_cloudwatch_observability.arn : null)
}
}
}
Expand All @@ -42,6 +42,10 @@ data "aws_iam_role" "eks_cni_driver" {
name = aws_iam_role.eks_cni_driver.name
}

data "aws_iam_role" "eks_cloudwatch_observability" {
name = aws_iam_role.eks_cloudwatch_observability.name
}

provider "kubernetes" {
host = data.aws_eks_cluster.cluster.endpoint
cluster_ca_certificate = base64decode(data.aws_eks_cluster.cluster.certificate_authority.0.data)
Expand Down Expand Up @@ -127,8 +131,34 @@ resource "aws_iam_role_policy_attachment" "amazon_cni_driver" {
policy_arn = "arn:aws:iam::aws:policy/AmazonEKS_CNI_Policy"
}

# IAM CloudWatch Observability Role
data "aws_iam_policy_document" "cw" {
statement {
actions = ["sts:AssumeRoleWithWebIdentity"]
effect = "Allow"

condition {
test = "StringEquals"
variable = "${replace(module.eks.oidc_provider, "https://", "")}:aud"
values = ["sts.amazonaws.com"]
}

principals {
identifiers = [module.eks.oidc_provider_arn]
type = "Federated"
}
}
}

resource "aws_iam_role" "eks_cloudwatch_observability" {
assume_role_policy = data.aws_iam_policy_document.cw.json
name = "eks-cloudwatch-observability"
}

resource "aws_iam_role_policy_attachment" "amazon_cloudwatch_observability" {
role = aws_iam_role.eks_cloudwatch_observability.name
policy_arn = "arn:aws:iam::aws:policy/CloudWatchAgentServerPolicy"
}

module "eks" {
source = "terraform-aws-modules/eks/aws"
Expand Down