Terraform S3到Lambda通知触发器

Question

我正在试图编码使用S3触发的lambda函数。Lambda函数的创建是成功的，但是"aws_s3_bucket_notification“资源在terraform:apply上失败，MethodNotAllowed错误与status code 405：

Error: Error applying plan:
20-Sep-2018 15:23:53    1 error(s) occurred:
20-Sep-2018 15:23:53    * aws_s3_bucket_notification.my-trigger: 1 error(s) occurred:
20-Sep-2018 15:23:53    * aws_s3_bucket_notification.my-trigger: Error putting S3 notification configuration: MethodNotAllowed: The specified method is not allowed against this resource.
20-Sep-2018 15:23:53            status code: 405, request id:<hidden>, host id:<hidden>

下面是设置通知触发器的代码：

resource "aws_s3_bucket_notification" "my-trigger" {
  bucket = "my-bucket"

  lambda_function {
    lambda_function_arn = "${aws_lambda_function.my-function.arn}"
    events              = ["s3:ObjectCreated:*"]
    filter_prefix       = "file-prefix"
    filter_suffix       = "file-extension"
  }
}

下面是从S3触发Lambda的权限：

resource "aws_lambda_permission" "s3-lambda-permission" {
  statement_id  = "AllowExecutionFromS3Bucket"
  action        = "lambda:InvokeFunction"
  function_name = "${aws_lambda_function.my-function.arn}"
  principal     = "s3.amazonaws.com"
  source_arn    = "arn:aws:s3:::my-bucket"
}

提前感谢！

Answer 1

所以我试过和你一样的设置，

...
// lambda resource

resource "aws_s3_bucket_notification" "my-trigger" {
    bucket = "my-bucket"

    lambda_function {
        lambda_function_arn = "${aws_lambda_function.my-function.arn}"
        events              = ["s3:ObjectCreated:*"]
        filter_prefix       = "AWSLogs/"
        filter_suffix       = ".txt"
    }
}

resource "aws_lambda_permission" "test" {
  statement_id  = "AllowS3Invoke"
  action        = "lambda:InvokeFunction"
  function_name = "${aws_lambda_function.my-function.arn}"
  principal = "s3.amazonaws.com"
  source_arn = "arn:aws:s3:::my-bucket"
}

...

我的S3桶策略如下所示：

{
    "Version": "2012-10-17",
    "Id": "AWSConsole-AccessLogs-Policy-1534800162725",
    "Statement": [
        {
            "Sid": "AWSConsoleStmt-1534800162725",
            "Effect": "Allow",
            "Principal": {
                "AWS": "arn:aws:iam::123456789012:root"
            },
            "Action": "s3:PutObject",
            "Resource": "arn:aws:s3:::my-bucket/AWSLogs/123456789012/*"
        }
    ]
}

并成功地创建了s3通知。

所以我认为现在你应该检查两件事：

1. 确保您的aws_lambda_permission实际上是在s3通知之前创建的。我使用的是terraform 0.10.2，但是在以前的版本中可能有一个bug，因此在s3通知之前不会创建这个lambda权限。
2. 检查您的s3桶策略。它可能是明确拒绝lambda访问。如果有的话，一定要处理掉这些。