feat(encryption): implement AWS KMS integration with encryption provider and update related configurations

2025-05-11 19:41:48 +02:00
parent 3e12b13d95
commit 457f2bd810
17 changed files with 268 additions and 48 deletions
@@ -0,0 +1,106 @@
+data "aws_iam_policy_document" "kms_key_policy" {
+  statement {
+    sid       = "Enable IAM User Permissions"
+    effect    = "Allow"
+    actions   = ["kms:*"]
+    resources = ["*"]
+
+    principals {
+      type        = "AWS"
+      identifiers = ["arn:aws:iam::${data.aws_caller_identity.current.account_id}:root"]
+    }
+  }
+
+  statement {
+    sid    = "Allow IAM User Access"
+    effect = "Allow"
+    actions = [
+      "kms:Encrypt",
+      "kms:Decrypt",
+      "kms:ReEncrypt*",
+      "kms:GenerateDataKey*",
+      "kms:DescribeKey"
+    ]
+    resources = ["*"]
+
+    principals {
+      type        = "AWS"
+      identifiers = [aws_iam_user.k8s_secrets_user.arn]
+    }
+
+    condition {
+      # Only allow from specific IP addresses
+      test     = "IpAddress"
+      variable = "aws:SourceIp"
+      values   = ["${join(",", local.instance_ips)}"]
+    }
+  }
+}
+
+resource "aws_kms_key" "k8s_secrets" {
+  description             = "KMS key for encrypting Kubernetes secrets"
+  deletion_window_in_days = 30
+  enable_key_rotation     = true
+
+  policy = data.aws_iam_policy_document.kms_key_policy.json
+}
+
+resource "aws_iam_user" "k8s_secrets_user" {
+  name = "alexpires-me-microk8s"
+}
+
+resource "aws_iam_access_key" "k8s_secrets_user_key" {
+  user = aws_iam_user.k8s_secrets_user.name
+}
+
+data "aws_iam_policy_document" "k8s_secrets_user_policy" {
+  statement {
+    effect = "Allow"
+
+    actions = [
+      "kms:Encrypt",
+      "kms:Decrypt",
+      "kms:ReEncrypt*",
+      "kms:GenerateDataKey*",
+      "kms:DescribeKey"
+    ]
+
+    resources = [aws_kms_key.k8s_secrets.arn]
+    condition {
+      # Only allow from specific IP addresses
+      test     = "IpAddress"
+      variable = "aws:SourceIp"
+      values   = ["${join(",", local.instance_ips)}"]
+    }
+  }
+}
+
+resource "aws_iam_user_policy" "k8s_secrets_user_policy" {
+  name   = "alexpires-me-microk8s-policy"
+  user   = aws_iam_user.k8s_secrets_user.name
+  policy = data.aws_iam_policy_document.k8s_secrets_user_policy.json
+}
+
+data "aws_caller_identity" "current" {}
+
+locals {
+  instance_ips = [
+    "${local.vps_1.ip}/32",
+  ]
+
+  vps_1 = {
+    id   = data.terraform_remote_state.contabo.outputs.instances[0].id
+    name = data.terraform_remote_state.contabo.outputs.instances[0].name
+    ip   = data.terraform_remote_state.contabo.outputs.instances[0].ip_config[0].v4[0].ip
+  }
+}
+
+data "terraform_remote_state" "contabo" {
+  backend = "s3"
+  config = {
+    bucket = "a13labs.infra.eu"
+    key    = "contabo.core.infra.tfstate"
+    region = "eu-west-1"
+  }
+}
+