Terraform AWS Athena 以使用 Glue 目录作为数据库

Question

我对应该如何使用 terraform 将 Athena 连接到我的 Glue Catalog 数据库感到困惑。

我用

resource "aws_glue_catalog_database" "catalog_database" {
    name = "${var.glue_db_name}"
}

resource "aws_glue_crawler" "datalake_crawler" {
    database_name = "${var.glue_db_name}"
    name          = "${var.crawler_name}"
    role          = "${aws_iam_role.crawler_iam_role.name}"
    description   = "${var.crawler_description}"
    table_prefix  = "${var.table_prefix}"
    schedule      = "${var.schedule}" 

    s3_target {
      path = "s3://${var.data_bucket_name[0]}"
  }
    s3_target {
      path = "s3://${var.data_bucket_name[1]}"
  }
 }

创建一个Glue DB和爬虫爬取一个s3 bucket（这里只有两个），但我不知道我如何link Athena查询服务到Glue DB。 In the terraform documentation for Athena, there doesn't appear to be a way to connect Athena to a Glue catalog but only to an S3 Bucket. Clearly, however, Athena can be integrated with Glue。

我如何改造 Athena 数据库以使用我的 Glue 目录而不是 S3 存储桶作为其数据源？

Answer 1

我的 Terraform 代码中有很多错误。开始于：

aws_athena_database code 中的 S3 存储桶参数指的是用于查询输出的存储桶 而不是 table 应该从中构建的数据.
我已将 aws_glue_crawler 设置为写入 Glue 数据库而不是 Athena 数据库。事实上，正如 Martin 在上面所建议的那样，一旦正确设置，Athena 就能够在 Glue 数据库中看到 tables。
我的抓取工具没有附加正确的策略。最初，附加到爬虫角色的唯一策略是
```
resource "aws_iam_role_policy_attachment" "crawler_attach" {
    policy_arn = "arn:aws:iam::aws:policy/service-role/AWSGlueServiceRole"
    role = "${aws_iam_role.crawler_iam_role.name}"
} 
```
在设置第二个策略明确允许所有 S3 访问我想要抓取的所有存储桶并将该策略附加到相同的抓取器角色后，抓取器运行并更新 tables 成功.

第二条政策：

resource "aws_iam_policy" "crawler_bucket_policy" {
    name = "crawler_bucket_policy"
    path = "/"
    description = "Gives crawler access to buckets"
    policy = <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "Stmt1553807998309",
      "Action": "*",
      "Effect": "Allow",
      "Resource": "*"
    },
    {
      "Sid": "Stmt1553808056033",
      "Action": "s3:*",
      "Effect": "Allow",
      "Resource": "arn:aws:s3:::bucket0"
    },
    {
      "Sid": "Stmt1553808078743",
      "Action": "s3:*",
      "Effect": "Allow",
      "Resource": "arn:aws:s3:::bucket1"
    },
    {
      "Sid": "Stmt1553808099644",
      "Action": "s3:*",
      "Effect": "Allow",
      "Resource": "arn:aws:s3:::bucket2"
    },
    {
      "Sid": "Stmt1553808114975",
      "Action": "s3:*",
      "Effect": "Allow",
      "Resource": "arn:aws:s3:::bucket3"
    },
    {
      "Sid": "Stmt1553808128211",
      "Action": "s3:*",
      "Effect": "Allow",
      "Resource": "arn:aws:s3:::bucket4"
    }
  ]
}
EOF
}

我相信我可以避免在此策略中对存储桶名称进行硬编码，但我还不知道该怎么做。

Answer 2

我们当前的基本设置是让 Glue 抓取一个 S3 存储桶和 create/update Glue 数据库中的一个 table，然后可以在 Athena 中查询，如下所示：

爬虫角色和角色策略：

IAM角色的assume_role_policy只需要Glue作为principal
IAM 角色策略允许对 Glue、S3 和日志执行操作
Glue 操作和资源可能会缩小到真正需要的范围
S3 操作仅限于爬虫所需的操作

resource "aws_iam_role" "glue_crawler_role" {
  name = "analytics_glue_crawler_role"

  assume_role_policy = <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Action": "sts:AssumeRole",
      "Principal": {
        "Service": "glue.amazonaws.com"
      },
      "Effect": "Allow",
      "Sid": ""
    }
  ]
}
EOF
}

resource "aws_iam_role_policy" "glue_crawler_role_policy" {
  name = "analytics_glue_crawler_role_policy"
  role = "${aws_iam_role.glue_crawler_role.id}"
  policy = <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "glue:*",
      ],
      "Resource": [
        "*"
      ]
    },
    {
      "Effect": "Allow",
      "Action": [
        "s3:GetBucketLocation",
        "s3:ListBucket",
        "s3:GetBucketAcl",
        "s3:GetObject",
        "s3:PutObject",
        "s3:DeleteObject"
      ],
      "Resource": [
        "arn:aws:s3:::analytics-product-data",
        "arn:aws:s3:::analytics-product-data/*",
      ]
    },
    {
      "Effect": "Allow",
      "Action": [
        "logs:CreateLogGroup",
        "logs:CreateLogStream",
        "logs:PutLogEvents"
      ],
      "Resource": [
        "arn:aws:logs:*:*:/aws-glue/*"
      ]
    }
  ]
}
EOF
}

S3 存储桶、胶水数据库和爬虫：

resource "aws_s3_bucket" "product_bucket" {
  bucket = "analytics-product-data"
  acl = "private"
}

resource "aws_glue_catalog_database" "analytics_db" {
  name = "inventory-analytics-db"
}

resource "aws_glue_crawler" "product_crawler" {
  database_name = "${aws_glue_catalog_database.analytics_db.name}"
  name = "analytics-product-crawler"
  role = "${aws_iam_role.glue_crawler_role.arn}"

  schedule = "cron(0 0 * * ? *)"

  configuration = "{\"Version\": 1.0, \"CrawlerOutput\": { \"Partitions\": { \"AddOrUpdateBehavior\": \"InheritFromTable\" }, \"Tables\": {\"AddOrUpdateBehavior\": \"MergeNewColumns\" } } }"

  schema_change_policy {
    delete_behavior = "DELETE_FROM_DATABASE"
  }

  s3_target {
    path = "s3://${aws_s3_bucket.product_bucket.bucket}/products"
  }
}

Terraform AWS Athena 以使用 Glue 目录作为数据库

Terraform AWS Athena to use Glue catalog as db

amazon-web-services

terraform

aws-glue

terraform-provider-aws

aws-glue-data-catalog