gtm-iam.tf

resource "aws_iam_role" "gtm_container_exec_role" {
  name = "gtm_container_exec_role"

  assume_role_policy = jsonencode({
    Version = "2012-10-17",
    Statement = [
      {
        Action = "sts:AssumeRole",
        Effect = "Allow",
        Principal = {
          Service = "ecs-tasks.amazonaws.com"
        }
      }
    ]
  })
}

resource "aws_iam_policy_attachment" "cloudwatch_full_access_gtm" {
  name       = "CloudWatchFullAccessAttachment"
  policy_arn = "arn:aws:iam::aws:policy/CloudWatchLogsFullAccess"
  roles      = [aws_iam_role.gtm_container_exec_role.name]
}

resource "aws_iam_policy_attachment" "AmazonECSTaskExecutionRolePolicy" {
  name       = "AmazonECSTaskExecutionRolePolicy"
  policy_arn = "arn:aws:iam::aws:policy/service-role/AmazonECSTaskExecutionRolePolicy"
  roles      = [aws_iam_role.gtm_container_exec_role.name]
}

resource "aws_iam_role" "gtm_container_role" {
  name = "gtm_container_role"

  assume_role_policy = jsonencode({
    Version = "2012-10-17",
    Statement = [
      {
        Action = "sts:AssumeRole",
        Effect = "Allow",
        Principal = {
          Service = "ecs-tasks.amazonaws.com"
        }
      }
    ]
  })
}

resource "aws_iam_policy" "ecs_exec" {
  name        = "container-ecsExec"
  description = "Give ssm permissions to use ecs exec"

  policy = jsonencode(
    {
      "Version" : "2012-10-17",
      "Statement" : [
        {
          "Effect" : "Allow",
          "Action" : [
            "ssmmessages:CreateControlChannel",
            "ssmmessages:CreateDataChannel",
            "ssmmessages:OpenControlChannel",
            "ssmmessages:OpenDataChannel"
          ],
          "Resource" : "*"
        }
      ]
  })
}

resource "aws_iam_role_policy_attachment" "ecs_exec" {
  role       = aws_iam_role.gtm_container_role.name
  policy_arn = aws_iam_policy.ecs_exec.arn
}