S3へ出力したCloudWatch LogsのデータをS3 SelectとAthenaで確認してみた

Kinesis Data Firehose介し、S3へ出力したCloudWatch LogsのデータをS3 SelectとAthenaで確認してみました。
2020.05.10

Kinesis Data Firehoseを使いCloudWatch LogのデータをS3に出力することが可能です。S3をデータソースにしたデータの確認方法は多々あると思いますが、ここではS3 SelectとAthenaを利用しログデータを確認してみたいと思います。本エントリでは、環境構築については割愛していますので、構築については以下ブログを参考にしてください。

なお、ここではS3へ出力されたログデータはAurora監査ログを利用しています。

S3 Select

構成

00

Kinesis Data Firehose設定

配信ストリームの設定は以下となります。


配信ストリーム設定
$ aws firehose describe-delivery-stream \
  --delivery-stream-name delivery-stream-for-s3-select
{
    "DeliveryStreamDescription": {
        "DeliveryStreamName": "delivery-stream-for-s3-select",
        "DeliveryStreamARN": "arn:aws:firehose:ap-northeast-1:XXXXXXXXXXXX:deliverystream/delivery-stream-for-s3-select",
        "DeliveryStreamStatus": "ACTIVE",
        "DeliveryStreamEncryptionConfiguration": {
            "Status": "DISABLED"
        },
        "DeliveryStreamType": "DirectPut",
        "VersionId": "1",
        "CreateTimestamp": 1588932218.145,
        "Destinations": [
            {
                "DestinationId": "destinationId-000000000001",
                "S3DestinationDescription": {
                    "RoleARN": "arn:aws:iam::XXXXXXXXXXXX:role/TestFirehosetoS3Role",
                    "BucketARN": "arn:aws:s3:::cloudwatch-logs-for-s3-select",
                    "Prefix": "test-aurora-cluster/audit/",
                    "ErrorOutputPrefix": "error-test-aurora-cluster/audit/",
                    "BufferingHints": {
                        "SizeInMBs": 1,
                        "IntervalInSeconds": 60
                    },
                    "CompressionFormat": "UNCOMPRESSED",
                    "EncryptionConfiguration": {
                        "NoEncryptionConfig": "NoEncryption"
                    },
                    "CloudWatchLoggingOptions": {
                        "Enabled": true,
                        "LogGroupName": "/aws/kinesisfirehose/delivery-stream-for-s3-select",
                        "LogStreamName": "S3Delivery"
                    }
                },
                "ExtendedS3DestinationDescription": {
                    "RoleARN": "arn:aws:iam::XXXXXXXXXXXX:role/TestFirehosetoS3Role",
                    "BucketARN": "arn:aws:s3:::cloudwatch-logs-for-s3-select",
                    "Prefix": "test-aurora-cluster/audit/",
                    "ErrorOutputPrefix": "error-test-aurora-cluster/audit/",
                    "BufferingHints": {
                        "SizeInMBs": 1,
                        "IntervalInSeconds": 60
                    },
                    "CompressionFormat": "UNCOMPRESSED",
                    "EncryptionConfiguration": {
                        "NoEncryptionConfig": "NoEncryption"
                    },
                    "CloudWatchLoggingOptions": {
                        "Enabled": true,
                        "LogGroupName": "/aws/kinesisfirehose/delivery-stream-for-s3-select",
                        "LogStreamName": "S3Delivery"
                    },
                    "ProcessingConfiguration": {
                        "Enabled": false,
                        "Processors": []
                    },
                    "S3BackupMode": "Disabled"
                }
            }
        ],
        "HasMoreDestinations": false
    }
}

CloudWatch Logsサブスクリプションフィルタ設定

サブスクリプションフィルタの設定は以下となります。


サブスクリプションフィルタ設定
  $ aws logs describe-subscription-filters \
    --log-group-name /aws/rds/cluster/test-aurora-cluster/audit
  {
      "subscriptionFilters": [
          {
              "filterName": "Destination",
              "logGroupName": "/aws/rds/cluster/test-aurora-cluster/audit",
              "filterPattern": "",
              "destinationArn": "arn:aws:firehose:ap-northeast-1:XXXXXXXXXXXX:deliverystream/delivery-stream-for-s3-select",
              "roleArn": "arn:aws:iam::XXXXXXXXXXXX:role/TestCWLtoKinesisFirehoseRole",
              "distribution": "ByLogStream",
              "creationTime": 1588816544843
          }
      ]
  }

CloudWatch Logロギング

後ほどログの確認が行いやすいよう、AuroraにアクセスしCloudWatch Logへロギングします。


Auroraでのオペレーション
MySQL [(none)]> select now();
+---------------------+
| now()               |
+---------------------+
| 2020-05-08 19:33:52 |
+---------------------+
1 row in set (0.00 sec)

MySQL [(none)]> select user();
+-----------------+
| user()          |
+-----------------+
| admin@10.0.1.54 |
+-----------------+
1 row in set (0.00 sec)

MySQL [(none)]> select host,user,authentication_string from mysql.user;
+-----------+-----------+-------------------------------------------+
| host      | user      | authentication_string                     |
+-----------+-----------+-------------------------------------------+
| %         | admin     | *2470C0C06DEE42FD1618BB99005ADCA2EC9D1E19 |
| %         | test_user | *2470C0C06DEE42FD1618BB99005ADCA2EC9D1E19 |
| %         | testadmin | *2470C0C06DEE42FD1618BB99005ADCA2EC9D1E19 |
| localhost | mysql.sys | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE |
| localhost | rdsadmin  | *8C0E64674BB3F606FF339142F68298EB1061E446 |
+-----------+-----------+-------------------------------------------+
5 rows in set (0.00 sec)

MySQL [(none)]> select now();
+---------------------+
| now()               |
+---------------------+
| 2020-05-08 19:33:52 |
+---------------------+
1 row in set (0.00 sec)

しばらくすると、CloudWatch Logへのロギングが確認できました。


CloudWatch Logロギング確認
$ QUERY_ID=`aws logs start-query \
  --log-group-name '/aws/rds/cluster/test-aurora-cluster/audit' \
  --start-time 1588934030 \
  --end-time 1588934040 \
  --query-string \
    'parse "*,*,*,*,*,*,*,*,*,*" as timestamp,serverhost,username,host,connectionid,queryid,operation,database,object,retcode
    | filter username = "admin"
    | sort timestamp asc' \
  --output text`
$ aws logs get-query-results \
  --query-id ${QUERY_ID} \
  --output table
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                        GetQueryResults                                                                                       |
+-------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
|  status                                                                             |  Complete                                                                                              |
+-------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
||                                                                                           results                                                                                          ||
|+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+|
||     field    |                                                                                    value                                                                                    ||
|+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+|
||  timestamp   |  1588934032041466                                                                                                                                                           ||
||  serverhost  |  test-aurora-master-instance                                                                                                                                                ||
||  username    |  admin                                                                                                                                                                      ||
||  host        |  10.0.1.54                                                                                                                                                                  ||
||  connectionid|  40                                                                                                                                                                         ||
||  queryid     |  3801                                                                                                                                                                       ||
||  operation   |  QUERY                                                                                                                                                                      ||
||  database    |                                                                                                                                                                             ||
||  object      |  'select now()'                                                                                                                                                             ||
||  retcode     |  0                                                                                                                                                                          ||
||  @ptr        |  CnYKOwo3MzkyMTM4Nzg5NzY0Oi9hd3MvcmRzL2NsdXN0ZXIvdGVzdC1hdXJvcmEtY2x1c3Rlci9hdWRpdBAGEjcaGAIF5hMtKQAAAAE3eR+gAAXrU1gAAAAAkiABKNCS5J6fLjCC5u2eny44gAFAy6QBSOlBUIw+EBYYAQ==   ||
||  timestamp   |  1588934032042572                                                                                                                                                           ||
||  serverhost  |  test-aurora-master-instance                                                                                                                                                ||
||  username    |  admin                                                                                                                                                                      ||
||  host        |  10.0.1.54                                                                                                                                                                  ||
||  connectionid|  40                                                                                                                                                                         ||
||  queryid     |  3802                                                                                                                                                                       ||
||  operation   |  QUERY                                                                                                                                                                      ||
||  database    |                                                                                                                                                                             ||
||  object      |  'select user()'                                                                                                                                                            ||
||  retcode     |  0                                                                                                                                                                          ||
||  @ptr        |  CnYKOwo3MzkyMTM4Nzg5NzY0Oi9hd3MvcmRzL2NsdXN0ZXIvdGVzdC1hdXJvcmEtY2x1c3Rlci9hdWRpdBAGEjcaGAIF5hMtKQAAAAE3eR+gAAXrU1gAAAAAkiABKNCS5J6fLjCC5u2eny44gAFAy6QBSOlBUIw+EBcYAQ==   ||
||  timestamp   |  1588934032044153                                                                                                                                                           ||
||  serverhost  |  test-aurora-master-instance                                                                                                                                                ||
||  username    |  admin                                                                                                                                                                      ||
||  host        |  10.0.1.54                                                                                                                                                                  ||
||  connectionid|  40                                                                                                                                                                         ||
||  queryid     |  3803                                                                                                                                                                       ||
||  operation   |  READ                                                                                                                                                                       ||
||  database    |  mysql                                                                                                                                                                      ||
||  object      |  user                                                                                                                                                                       ||
||  retcode     |                                                                                                                                                                             ||
||  @ptr        |  CnYKOwo3MzkyMTM4Nzg5NzY0Oi9hd3MvcmRzL2NsdXN0ZXIvdGVzdC1hdXJvcmEtY2x1c3Rlci9hdWRpdBAGEjcaGAIF5hMtKQAAAAE3eR+gAAXrU1gAAAAAkiABKNCS5J6fLjCC5u2eny44gAFAy6QBSOlBUIw+EBkYAQ==   ||
||  timestamp   |  1588934032044264                                                                                                                                                           ||
||  serverhost  |  test-aurora-master-instance                                                                                                                                                ||
||  username    |  admin                                                                                                                                                                      ||
||  host        |  10.0.1.54                                                                                                                                                                  ||
||  connectionid|  40                                                                                                                                                                         ||
||  queryid     |  3803                                                                                                                                                                       ||
||  operation   |  QUERY                                                                                                                                                                      ||
||  database    |  mysql                                                                                                                                                                      ||
||  object      |  'select host                                                                                                                                                               ||
||  retcode     |  user,authentication_string from mysql.user',0                                                                                                                              ||
||  @ptr        |  CnYKOwo3MzkyMTM4Nzg5NzY0Oi9hd3MvcmRzL2NsdXN0ZXIvdGVzdC1hdXJvcmEtY2x1c3Rlci9hdWRpdBAGEjcaGAIF5hMtKQAAAAE3eR+gAAXrU1gAAAAAkiABKNCS5J6fLjCC5u2eny44gAFAy6QBSOlBUIw+EBoYAQ==   ||
||  timestamp   |  1588934032788148                                                                                                                                                           ||
||  serverhost  |  test-aurora-master-instance                                                                                                                                                ||
||  username    |  admin                                                                                                                                                                      ||
||  host        |  10.0.1.54                                                                                                                                                                  ||
||  connectionid|  40                                                                                                                                                                         ||
||  queryid     |  3807                                                                                                                                                                       ||
||  operation   |  QUERY                                                                                                                                                                      ||
||  database    |  mysql                                                                                                                                                                      ||
||  object      |  'select now()'                                                                                                                                                             ||
||  retcode     |  0                                                                                                                                                                          ||
||  @ptr        |  CnUKOwo3MzkyMTM4Nzg5NzY0Oi9hd3MvcmRzL2NsdXN0ZXIvdGVzdC1hdXJvcmEtY2x1c3Rlci9hdWRpdBAFEjYaGAIF55NVCwAAAAF4y6Z3AAXrU1VwAAABsiABKIG74Z6fLjDXoeueny44c0CHpAFIjUhQs0QQKhgB       ||
|+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+|
||                                                                                         statistics                                                                                         ||
|+--------------------------------------------------------+-----------------------------------------------------------------+-----------------------------------------------------------------+|
||                      bytesScanned                      |                         recordsMatched                          |                         recordsScanned                          ||
|+--------------------------------------------------------+-----------------------------------------------------------------+-----------------------------------------------------------------+|
||  178911.0                                              |  5.0                                                            |  1027.0                                                         ||
|+--------------------------------------------------------+-----------------------------------------------------------------+-----------------------------------------------------------------+|

S3 Select実行

S3 SelectはS3に格納された単一のオブジェクトより、SQLにてデータを抽出することが可能です。さきほど実施した、Auroraでのオペレーションは、JSTの「2020-05-08 19:33」頃となります。今回の配信ストリームの設定では、「YYYY/MM/DD/HH(UTC)」形式でS3にデータが出力されます。出力先のバケット設定などを加味すると、以下が出力先となります。

  • s3://cloudwatch-logs-for-s3-select/test-aurora-cluster/audit/2020/05/08/10

更新日時を参考に、S3 Selectを行うログをピックアップします。

「アクション」-「S3 Select」をクリックします。

CloudWatch LogsからKinesis Data Firehoseを介しS3に出力されたデータは、JSON形式でgzipに圧縮されていますので、以下を選択し「ファイルプレビューの表示」をクリックします。

  • ファイル形式…JSON
  • JSONタイプ…JSON ドキュメント
  • 圧縮…GZIP

この時確認できたプレビューデータを添付しておきます。


プレビュー結果
[
    {
        "messageType": "DATA_MESSAGE",
        "owner": "XXXXXXXXXXXX",
        "logGroup": "/aws/rds/cluster/test-aurora-cluster/audit",
        "logStream": "test-aurora-master-instance.audit.log.3.2020-05-08-10-22.0.1",
        "subscriptionFilters": [
            "Destination"
        ],
        "logEvents": [
            {
                "id": "35434412931205709067612018357150400014362387976194490368",
                "timestamp": 1588934029592,
                "message": "1588934029592349,test-aurora-master-instance,rdsadmin,localhost,3,3791,QUERY,mysql,'SET @@sql_log_bin=on',0"
            },
            {
                "id": "35434412941218743661752268147699937518781502292379697153",
                "timestamp": 1588934030041,
                "message": "1588934030041805,test-aurora-master-instance,rdsadmin,localhost,2,3792,QUERY,mysql,'set local oscar_local_only_replica_host_status=1',0"
            },
            {
                "id": "35434412941241044406950798770841473237054150653885677570",
                "timestamp": 1588934030042,
                "message": "1588934030042281,test-aurora-master-instance,rdsadmin,localhost,2,3793,QUERY,mysql,'SELECT durable_lsn, current_read_point, server_id, last_update_timestamp FROM information_schema.replica_host_status',0"
            },
            {
                "id": "35434412941285645897347860017124544673599447376897638403",
                "timestamp": 1588934030044,
                "message": "1588934030044855,test-aurora-master-instance,rdsadmin,localhost,2,3794,QUERY,mysql,'set local oscar_local_only_replica_host_status=0',0"
            }
        ]
    },
    {
        "messageType": "DATA_MESSAGE",
        "owner": "XXXXXXXXXXXX",
        "logGroup": "/aws/rds/cluster/test-aurora-cluster/audit",
        "logStream": "test-aurora-master-instance.audit.log.2.2020-05-08-10-22.0.3",
        "subscriptionFilters": [
            "Destination"
        ],
        "logEvents": [
            {
                "id": "35434412929800762120104589099274971885390409568918831104",
                "timestamp": 1588934029529,
                "message": "1588934029529190,test-aurora-master-instance,rdsadmin,localhost,3,3789,QUERY,mysql,'select @@session.tx_read_only',0"
            }
        ]
    },
    {
        "messageType": "DATA_MESSAGE",
        "owner": "XXXXXXXXXXXX",
        "logGroup": "/aws/rds/cluster/test-aurora-cluster/audit",
        "logStream": "test-aurora-master-instance.audit.log.0.2020-05-08-10-22.0.3",
        "subscriptionFilters": [
            "Destination"
        ],
        "logEvents": [
            {
                "id": "35434412927548386855052996162013805543482168054050848768",
                "timestamp": 1588934029428,
                "message": "1588934029428140,test-aurora-master-instance,rdsadmin,localhost,3,3786,QUERY,mysql,'SET @@sql_log_bin=off',0"
            },
            {
                "id": "35434412928551920388986874203382912865751344321819967489",
                "timestamp": 1588934029473,
                "message": "1588934029473859,test-aurora-master-instance,rdsadmin,localhost,3,3788,WRITE,mysql,rds_heartbeat2,"
            }
        ]
    },
    {
        "messageType": "DATA_MESSAGE",
        "owner": "XXXXXXXXXXXX",
        "logGroup": "/aws/rds/cluster/test-aurora-cluster/audit",
        "logStream": "test-aurora-master-instance.audit.log.1.2020-05-08-10-22.0.3",
        "subscriptionFilters": [
            "Destination"
        ],
        "logEvents": [
            {
                "id": "35434412928440416662994221087716244297993433824790904832",
                "timestamp": 1588934029468,
                "message": "1588934029468081,test-aurora-master-instance,rdsadmin,localhost,3,3787,QUERY,mysql,'select @@session.tx_read_only',0"
            },
            {
                "id": "35434412929510852432523690998509958775080555177077964801",
                "timestamp": 1588934029516,
                "message": "1588934029516681,test-aurora-master-instance,rdsadmin,localhost,3,3788,QUERY,mysql,'INSERT INTO mysql.rds_heartbeat2(id, value) values (1,1588934029428) ON DUPLICATE KEY UPDATE value = 1588934029428',0"
            },
            {
                "id": "35434412930670491182847283401869816125258269975388946434",
                "timestamp": 1588934029568,
                "message": "1588934029568797,test-aurora-master-instance,rdsadmin,localhost,3,3790,QUERY,mysql,'COMMIT',0"
            }
        ]
    },
    {
        "messageType": "DATA_MESSAGE",
        "owner": "XXXXXXXXXXXX",
        "logGroup": "/aws/rds/cluster/test-aurora-cluster/audit",
        "logStream": "test-aurora-master-instance.audit.log.1.2020-05-08-10-22.0.3",
        "subscriptionFilters": [
            "Destination"
        ],
        "logEvents": [
            {
                "id": "35434412971859967564533344346683415762524399170967961600",
                "timestamp": 1588934031415,
                "message": "1588934031415444,test-aurora-master-instance,rdsadmin,localhost,3,3795,QUERY,mysql,'SET @@sql_log_bin=off',0"
            }
        ]
    },
    {
        "messageType": "DATA_MESSAGE",
        "owner": "XXXXXXXXXXXX",
        "logGroup": "/aws/rds/cluster/test-aurora-cluster/audit",
        "logStream": "test-aurora-master-instance.audit.log.0.2020-05-08-10-22.0.0",
        "subscriptionFilters": [
            "Destination"
        ],
        "logEvents": [
            {
                "id": "35434412973465621218827549212830711225717307494644121600",
                "timestamp": 1588934031487,
                "message": "1588934031487938,test-aurora-master-instance,rdsadmin,localhost,3,3796,QUERY,mysql,'select @@session.tx_read_only',0"
            },
            {
                "id": "35434412973487921964026079835972246943989955856150102017",
                "timestamp": 1588934031488,
                "message": "1588934031488740,test-aurora-master-instance,rdsadmin,localhost,3,3797,WRITE,mysql,rds_heartbeat2,"
            },
            {
                "id": "35434412974469154752761427254199818547986483762413240322",
                "timestamp": 1588934031532,
                "message": "1588934031532851,test-aurora-master-instance,rdsadmin,localhost,3,3798,QUERY,mysql,'select @@session.tx_read_only',0"
            },
            {
                "id": "35434412975717996483879142150125818771254792006748143619",
                "timestamp": 1588934031588,
                "message": "1588934031588794,test-aurora-master-instance,rdsadmin,localhost,3,3799,QUERY,mysql,'COMMIT',0"
            },
            {
                "id": "35434412985820234058813514433241499148764499768957272068",
                "timestamp": 1588934032041,
                "message": "1588934032041466,test-aurora-master-instance,admin,10.0.1.54,40,3801,QUERY,,'select now()',0"
            },
            {
                "id": "35434412985842534804012045056383034867037148130463252485",
                "timestamp": 1588934032042,
                "message": "1588934032042572,test-aurora-master-instance,admin,10.0.1.54,40,3802,QUERY,,'select user()',0"
            },
            {
                "id": "35434412985887136294409106302666106303582444853475213318",
                "timestamp": 1588934032044,
                "message": "1588934032044129,test-aurora-master-instance,rdsadmin,localhost,2,3804,QUERY,mysql,'set local oscar_local_only_replica_host_status=1',0"
            },
            {
                "id": "35434412985887136294409106302666106303582444853475213319",
                "timestamp": 1588934032044,
                "message": "1588934032044153,test-aurora-master-instance,admin,10.0.1.54,40,3803,READ,mysql,user,"
            },
            {
                "id": "35434412985887136294409106302666106303582444853475213320",
                "timestamp": 1588934032044,
                "message": "1588934032044264,test-aurora-master-instance,admin,10.0.1.54,40,3803,QUERY,mysql,'select host,user,authentication_string from mysql.user',0"
            },
            {
                "id": "35434412985887136294409106302666106303582444853475213321",
                "timestamp": 1588934032044,
                "message": "1588934032044753,test-aurora-master-instance,rdsadmin,localhost,2,3805,QUERY,mysql,'SELECT durable_lsn, current_read_point, server_id, last_update_timestamp FROM information_schema.replica_host_status',0"
            },
            {
                "id": "35434412985909437039607636925807642021855093214981193738",
                "timestamp": 1588934032045,
                "message": "1588934032045354,test-aurora-master-instance,rdsadmin,localhost,2,3806,QUERY,mysql,'set local oscar_local_only_replica_host_status=0',0"
            }
        ]
    },
    {
        "messageType": "DATA_MESSAGE",
        "owner": "XXXXXXXXXXXX",
        "logGroup": "/aws/rds/cluster/test-aurora-cluster/audit",
        "logStream": "test-aurora-master-instance.audit.log.3.2020-05-08-10-22.0.2",
        "subscriptionFilters": [
            "Destination"
        ],
        "logEvents": [
            {
                "id": "35434412973710929416011386067329825380935958304238665728",
                "timestamp": 1588934031498,
                "message": "1588934031498452,test-aurora-master-instance,rdsadmin,localhost,3,3797,QUERY,mysql,'INSERT INTO mysql.rds_heartbeat2(id, value) values (1,1588934031415) ON DUPLICATE KEY UPDATE value = 1588934031415',0"
            },
            {
                "id": "35434412976164011387849754612898754390927278069896511489",
                "timestamp": 1588934031608,
                "message": "1588934031608371,test-aurora-master-instance,rdsadmin,localhost,3,3800,QUERY,mysql,'SET @@sql_log_bin=on',0"
            }
        ]
    },
    {
        "messageType": "DATA_MESSAGE",
        "owner": "XXXXXXXXXXXX",
        "logGroup": "/aws/rds/cluster/test-aurora-cluster/audit",
        "logStream": "test-aurora-master-instance.audit.log.2.2020-05-08-10-22.0.2",
        "subscriptionFilters": [
            "Destination"
        ],
        "logEvents": [
            {
                "id": "35434413002478890722115889921126861524238751421182902272",
                "timestamp": 1588934032788,
                "message": "1588934032788148,test-aurora-master-instance,admin,10.0.1.54,40,3807,QUERY,mysql,'select now()',0"
            }
        ]
    },
    {
        "messageType": "DATA_MESSAGE",
        "owner": "XXXXXXXXXXXX",
        "logGroup": "/aws/rds/cluster/test-aurora-cluster/audit",
        "logStream": "test-aurora-master-instance.audit.log.3.2020-05-08-10-22.0.2",
        "subscriptionFilters": [
            "Destination"
        ],
        "logEvents": [
            {
                "id": "35434413018535427265057938584227977259756395433104179200",
                "timestamp": 1588934033508,
                "message": "1588934033508241,test-aurora-master-instance,rdsadmin,localhost,3,3810,QUERY,mysql,'INSERT INTO mysql.rds_heartbeat2(id, value) values (1,1588934033436) ON DUPLICATE KEY UPDATE value = 1588934033436',0"
            }
        ]
    },
    {
        "messageType": "DATA_MESSAGE",
        "owner": "XXXXXXXXXXXX",
        "logGroup": "/aws/rds/cluster/test-aurora-cluster/audit",
        "logStream": "test-aurora-master-instance.audit.log.0.2020-05-08-10-22.0.1",
        "subscriptionFilters": [
            "Destination"
        ],
        "logEvents": [
            {
                "id": "35434413016907472865565203094980709992037281047195680768",
                "timestamp": 1588934033435,
                "message": "1588934033435781,test-aurora-master-instance,rdsadmin,localhost,3,3808,QUERY,mysql,'SET @@sql_log_bin=off',0"
            },
            {
                "id": "35434413019538960798991816625681924748209787704901369857",
                "timestamp": 1588934033553,
                "message": "1588934033553002,test-aurora-master-instance,rdsadmin,localhost,3,3812,QUERY,mysql,'COMMIT',0"
            },
            {
                "id": "35434413020430990606933041551343353479115722165140586498",
                "timestamp": 1588934033593,
                "message": "1588934033593076,test-aurora-master-instance,rdsadmin,localhost,3,3813,QUERY,mysql,'SET @@sql_log_bin=on',0"
            }
        ]
    }
]

SQLエディタにて、以下SQLを入力し「SQLの実行」をクリックします。

SQL

select * from S3Object[*].logEvents[*].message s where s like '%,admin%'

クエリについて補足します。テーブルS3Objectを指定し、JSONオブジェクト内の配列、キーを指定しています。(ここでは、logEvents配列内のmessageキー)条件は文字列の部分一致で、さきほどAuroraでオペレーションを行ったユーザadminを指定しました。詳細については以下を確認ください。

SQLの結果は以下となり、さきほど実施したAuroraでのオペレーションをログから確認することができました。

[
    {
        "_1": "1588934032041466,test-aurora-master-instance,admin,10.0.1.54,40,3801,QUERY,,'select now()',0"
    },
    {
        "_1": "1588934032042572,test-aurora-master-instance,admin,10.0.1.54,40,3802,QUERY,,'select user()',0"
    },
    {
        "_1": "1588934032044153,test-aurora-master-instance,admin,10.0.1.54,40,3803,READ,mysql,user,"
    },
    {
        "_1": "1588934032044264,test-aurora-master-instance,admin,10.0.1.54,40,3803,QUERY,mysql,'select host,user,authentication_string from mysql.user',0"
    },
    {
        "_1": "1588934032788148,test-aurora-master-instance,admin,10.0.1.54,40,3807,QUERY,mysql,'select now()',0"
    },
    {
        "_1": "1588934043462741,test-aurora-master-instance,admin,10.0.1.54,40,0,DISCONNECT,,,0"
    }
]

AWS CLIで実施する場合は以下のようになります。

$ aws s3api select-object-content \
  --bucket=cloudwatch-logs-for-s3-select \
  --key=test-aurora-cluster/audit/2020/05/08/10/delivery-stream-for-s3-select-1-2020-05-08-10-33-51-8bf316ce-efd0-47e9-ba9d-57726e11cd5f \
  --expression "select * from S3Object[*].logEvents[*].message s where s like '%,admin%'" \
  --input-serialization '{ "CompressionType": "GZIP","JSON": {"Type": "DOCUMENT"}}' \
  --output-serialization '{"JSON":{"RecordDelimiter":"\n"}}' \
  --expression-type SQL output.json

output.json

{"_1":"1588934032041466,test-aurora-master-instance,admin,10.0.1.54,40,3801,QUERY,,'select now()',0"}
{"_1":"1588934032042572,test-aurora-master-instance,admin,10.0.1.54,40,3802,QUERY,,'select user()',0"}
{"_1":"1588934032044153,test-aurora-master-instance,admin,10.0.1.54,40,3803,READ,mysql,user,"}
{"_1":"1588934032044264,test-aurora-master-instance,admin,10.0.1.54,40,3803,QUERY,mysql,'select host,user,authentication_string from mysql.user',0"}
{"_1":"1588934032788148,test-aurora-master-instance,admin,10.0.1.54,40,3807,QUERY,mysql,'select now()',0"}
{"_1":"1588934043462741,test-aurora-master-instance,admin,10.0.1.54,40,0,DISCONNECT,,,0"}

Athena

構成

00

Kinesis Data Firehoseを介し、S3に出力されたCloudWatch Logsのデータは以下のように、1行に複数のJSONが保存されています。

$ aws s3 cp s3://cloudwatch-logs-for-s3-select/test-aurora-cluster/audit/2020/05/08/10/delivery-stream-for-s3-select-1-2020-05-08-10-33-51-8bf316ce-efd0-47e9-ba9d-57726e11cd5f ./cwl.gz
download: s3://cloudwatch-logs-for-s3-select/test-aurora-cluster/audit/2020/05/08/10/delivery-stream-for-s3-select-1-2020-05-08-10-33-51-8bf316ce-efd0-47e9-ba9d-57726e11cd5f to ./cwl.gz
$ gzcat cwl.gz
{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.3.2020-05-08-10-22.0.1","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434412931205709067612018357150400014362387976194490368","timestamp":1588934029592,"message":"1588934029592349,test-aurora-master-instance,rdsadmin,localhost,3,3791,QUERY,mysql,'SET @@sql_log_bin=on',0"},{"id":"35434412941218743661752268147699937518781502292379697153","timestamp":1588934030041,"message":"1588934030041805,test-aurora-master-instance,rdsadmin,localhost,2,3792,QUERY,mysql,'set local oscar_local_only_replica_host_status=1',0"},{"id":"35434412941241044406950798770841473237054150653885677570","timestamp":1588934030042,"message":"1588934030042281,test-aurora-master-instance,rdsadmin,localhost,2,3793,QUERY,mysql,'SELECT durable_lsn, current_read_point, server_id, last_update_timestamp FROM information_schema.replica_host_status',0"},{"id":"35434412941285645897347860017124544673599447376897638403","timestamp":1588934030044,"message":"1588934030044855,test-aurora-master-instance,rdsadmin,localhost,2,3794,QUERY,mysql,'set local oscar_local_only_replica_host_status=0',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.2.2020-05-08-10-22.0.3","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434412929800762120104589099274971885390409568918831104","timestamp":1588934029529,"message":"1588934029529190,test-aurora-master-instance,rdsadmin,localhost,3,3789,QUERY,mysql,'select @@session.tx_read_only',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.0.2020-05-08-10-22.0.3","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434412927548386855052996162013805543482168054050848768","timestamp":1588934029428,"message":"1588934029428140,test-aurora-master-instance,rdsadmin,localhost,3,3786,QUERY,mysql,'SET @@sql_log_bin=off',0"},{"id":"35434412928551920388986874203382912865751344321819967489","timestamp":1588934029473,"message":"1588934029473859,test-aurora-master-instance,rdsadmin,localhost,3,3788,WRITE,mysql,rds_heartbeat2,"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.1.2020-05-08-10-22.0.3","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434412928440416662994221087716244297993433824790904832","timestamp":1588934029468,"message":"1588934029468081,test-aurora-master-instance,rdsadmin,localhost,3,3787,QUERY,mysql,'select @@session.tx_read_only',0"},{"id":"35434412929510852432523690998509958775080555177077964801","timestamp":1588934029516,"message":"1588934029516681,test-aurora-master-instance,rdsadmin,localhost,3,3788,QUERY,mysql,'INSERT INTO mysql.rds_heartbeat2(id, value) values (1,1588934029428) ON DUPLICATE KEY UPDATE value = 1588934029428',0"},{"id":"35434412930670491182847283401869816125258269975388946434","timestamp":1588934029568,"message":"1588934029568797,test-aurora-master-instance,rdsadmin,localhost,3,3790,QUERY,mysql,'COMMIT',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.1.2020-05-08-10-22.0.3","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434412971859967564533344346683415762524399170967961600","timestamp":1588934031415,"message":"1588934031415444,test-aurora-master-instance,rdsadmin,localhost,3,3795,QUERY,mysql,'SET @@sql_log_bin=off',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.0.2020-05-08-10-22.0.0","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434412973465621218827549212830711225717307494644121600","timestamp":1588934031487,"message":"1588934031487938,test-aurora-master-instance,rdsadmin,localhost,3,3796,QUERY,mysql,'select @@session.tx_read_only',0"},{"id":"35434412973487921964026079835972246943989955856150102017","timestamp":1588934031488,"message":"1588934031488740,test-aurora-master-instance,rdsadmin,localhost,3,3797,WRITE,mysql,rds_heartbeat2,"},{"id":"35434412974469154752761427254199818547986483762413240322","timestamp":1588934031532,"message":"1588934031532851,test-aurora-master-instance,rdsadmin,localhost,3,3798,QUERY,mysql,'select @@session.tx_read_only',0"},{"id":"35434412975717996483879142150125818771254792006748143619","timestamp":1588934031588,"message":"1588934031588794,test-aurora-master-instance,rdsadmin,localhost,3,3799,QUERY,mysql,'COMMIT',0"},{"id":"35434412985820234058813514433241499148764499768957272068","timestamp":1588934032041,"message":"1588934032041466,test-aurora-master-instance,admin,10.0.1.54,40,3801,QUERY,,'select now()',0"},{"id":"35434412985842534804012045056383034867037148130463252485","timestamp":1588934032042,"message":"1588934032042572,test-aurora-master-instance,admin,10.0.1.54,40,3802,QUERY,,'select user()',0"},{"id":"35434412985887136294409106302666106303582444853475213318","timestamp":1588934032044,"message":"1588934032044129,test-aurora-master-instance,rdsadmin,localhost,2,3804,QUERY,mysql,'set local oscar_local_only_replica_host_status=1',0"},{"id":"35434412985887136294409106302666106303582444853475213319","timestamp":1588934032044,"message":"1588934032044153,test-aurora-master-instance,admin,10.0.1.54,40,3803,READ,mysql,user,"},{"id":"35434412985887136294409106302666106303582444853475213320","timestamp":1588934032044,"message":"1588934032044264,test-aurora-master-instance,admin,10.0.1.54,40,3803,QUERY,mysql,'select host,user,authentication_string from mysql.user',0"},{"id":"35434412985887136294409106302666106303582444853475213321","timestamp":1588934032044,"message":"1588934032044753,test-aurora-master-instance,rdsadmin,localhost,2,3805,QUERY,mysql,'SELECT durable_lsn, current_read_point, server_id, last_update_timestamp FROM information_schema.replica_host_status',0"},{"id":"35434412985909437039607636925807642021855093214981193738","timestamp":1588934032045,"message":"1588934032045354,test-aurora-master-instance,rdsadmin,localhost,2,3806,QUERY,mysql,'set local oscar_local_only_replica_host_status=0',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.3.2020-05-08-10-22.0.2","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434412973710929416011386067329825380935958304238665728","timestamp":1588934031498,"message":"1588934031498452,test-aurora-master-instance,rdsadmin,localhost,3,3797,QUERY,mysql,'INSERT INTO mysql.rds_heartbeat2(id, value) values (1,1588934031415) ON DUPLICATE KEY UPDATE value = 1588934031415',0"},{"id":"35434412976164011387849754612898754390927278069896511489","timestamp":1588934031608,"message":"1588934031608371,test-aurora-master-instance,rdsadmin,localhost,3,3800,QUERY,mysql,'SET @@sql_log_bin=on',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.2.2020-05-08-10-22.0.2","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434413002478890722115889921126861524238751421182902272","timestamp":1588934032788,"message":"1588934032788148,test-aurora-master-instance,admin,10.0.1.54,40,3807,QUERY,mysql,'select now()',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.3.2020-05-08-10-22.0.2","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434413018535427265057938584227977259756395433104179200","timestamp":1588934033508,"message":"1588934033508241,test-aurora-master-instance,rdsadmin,localhost,3,3810,QUERY,mysql,'INSERT INTO mysql.rds_heartbeat2(id, value) values (1,1588934033436) ON DUPLICATE KEY UPDATE value = 1588934033436',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.0.2020-05-08-10-22.0.1","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434413016907472865565203094980709992037281047195680768","timestamp":1588934033435,"message":"1588934033435781,test-aurora-master-instance,rdsadmin,localhost,3,3808,QUERY,mysql,'SET @@sql_log_bin=off',0"},{"id":"35434413019538960798991816625681924748209787704901369857","timestamp":1588934033553,"message":"1588934033553002,test-aurora-master-instance,rdsadmin,localhost,3,3812,QUERY,mysql,'COMMIT',0"},{"id":"35434413020430990606933041551343353479115722165140586498","timestamp":1588934033593,"message":"1588934033593076,test-aurora-master-instance,rdsadmin,localhost,3,3813,QUERY,mysql,'SET @@sql_log_bin=on',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.1.2020-05-08-10-22.0.1","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434413018803036207440306062047480134402972585893101568","timestamp":1588934033520,"message":"1588934033520220,test-aurora-master-instance,rdsadmin,localhost,3,3811,QUERY,mysql,'select @@session.tx_read_only',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.2.2020-05-08-10-22.0.3","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434413018156314596682917990868198141171612945193107456","timestamp":1588934033491,"message":"1588934033491612,test-aurora-master-instance,rdsadmin,localhost,3,3809,QUERY,mysql,'select @@session.tx_read_only',0"},{"id":"35434413018357021303469693599142019605625448198746931201","timestamp":1588934033500,"message":"1588934033500959,test-aurora-master-instance,rdsadmin,localhost,3,3810,WRITE,mysql,rds_heartbeat2,"},{"id":"35434413030711634143455658819552807528672640473060081666","timestamp":1588934034054,"message":"1588934034054144,test-aurora-master-instance,rdsadmin,localhost,2,3814,QUERY,mysql,'set local oscar_local_only_replica_host_status=1',0"},{"id":"35434413030756235633852720065835878965217937196072042499","timestamp":1588934034056,"message":"1588934034056258,test-aurora-master-instance,rdsadmin,localhost,2,3815,QUERY,mysql,'SELECT durable_lsn, current_read_point, server_id, last_update_timestamp FROM information_schema.replica_host_status',0"},{"id":"35434413030756235633852720065835878965217937196072042500","timestamp":1588934034056,"message":"1588934034056344,test-aurora-master-instance,rdsadmin,localhost,2,3816,QUERY,mysql,'set local oscar_local_only_replica_host_status=0',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.0.2020-05-08-10-22.0.0","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434413062155684873383837451596295216840663405941882880","timestamp":1588934035464,"message":"1588934035464006,test-aurora-master-instance,rdsadmin,localhost,3,3817,QUERY,mysql,'SET @@sql_log_bin=off',0"},{"id":"35434413065166285475185471575703617183648192209249239041","timestamp":1588934035599,"message":"1588934035599881,test-aurora-master-instance,rdsadmin,localhost,3,3822,QUERY,mysql,'SET @@sql_log_bin=on',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.2.2020-05-08-10-22.0.2","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434413063226120642913307362345302541264930719570460672","timestamp":1588934035512,"message":"1588934035512954,test-aurora-master-instance,rdsadmin,localhost,3,3819,QUERY,mysql,'INSERT INTO mysql.rds_heartbeat2(id, value) values (1,1588934035464) ON DUPLICATE KEY UPDATE value = 1588934035464',0"},{"id":"35434413064408060138435430388846695609715293879387422721","timestamp":1588934035565,"message":"1588934035565223,test-aurora-master-instance,rdsadmin,localhost,3,3820,QUERY,mysql,'select @@session.tx_read_only',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.3.2020-05-08-10-22.0.3","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434413075803740934884578814122100732163079013086265344","timestamp":1588934036076,"message":"1588934036076439,test-aurora-master-instance,rdsadmin,localhost,2,3823,QUERY,mysql,'set local oscar_local_only_replica_host_status=1',0"},{"id":"35434413075803740934884578814122100732163079013086265345","timestamp":1588934036076,"message":"1588934036076948,test-aurora-master-instance,rdsadmin,localhost,2,3824,QUERY,mysql,'SELECT durable_lsn, current_read_point, server_id, last_update_timestamp FROM information_schema.replica_host_status',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.1.2020-05-08-10-22.0.0","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434413062534797541758858045034960841051843236826775552","timestamp":1588934035481,"message":"1588934035481668,test-aurora-master-instance,rdsadmin,localhost,3,3818,QUERY,mysql,'select @@session.tx_read_only',0"},{"id":"35434413062690902758148572407025710868960381767368638465","timestamp":1588934035488,"message":"1588934035488199,test-aurora-master-instance,rdsadmin,localhost,3,3819,WRITE,mysql,rds_heartbeat2,"},{"id":"35434413064787172806810450982330068386589327748930797570","timestamp":1588934035582,"message":"1588934035582626,test-aurora-master-instance,rdsadmin,localhost,3,3821,QUERY,mysql,'COMMIT',0"},{"id":"35434413075826041680083109437390248931550266694391103491","timestamp":1588934036077,"message":"1588934036077716,test-aurora-master-instance,rdsadmin,localhost,2,3825,QUERY,mysql,'set local 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oscar_local_only_replica_host_status=0',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.2.2020-05-08-10-22.0.1","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434414176457020208363484025126095783125125437952360448","timestamp":1588934085431,"message":"1588934085431938,test-aurora-master-instance,rdsadmin,localhost,43,4109,QUERY,,'SELECT @@aurora_version',0"},{"id":"35434414176479320953562014648267631501397773799458340865","timestamp":1588934085432,"message":"1588934085432364,test-aurora-master-instance,rdsadmin,localhost,3,4110,QUERY,mysql,'SET @@sql_log_bin=off',0"},{"id":"35434414177282147780709117081362917359213114813673635842","timestamp":1588934085468,"message":"1588934085468912,test-aurora-master-instance,rdsadmin,localhost,3,4112,WRITE,mysql,rds_heartbeat2,"},{"id":"35434414177549756723091484559061345978484895151745400835","timestamp":1588934085480,"message":"1588934085480504,test-aurora-master-instance,rdsadmin,localhost,3,4112,QUERY,mysql,'INSERT INTO mysql.rds_heartbeat2(id, value) values (1,1588934085432) ON DUPLICATE KEY UPDATE value = 1588934085432',0"},{"id":"35434414178753996963812138208704274765207906673068343300","timestamp":1588934085534,"message":"1588934085534425,test-aurora-master-instance,rdsadmin,localhost,3,4114,QUERY,mysql,'COMMIT',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.2.2020-05-08-10-22.0.2","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434414223979908226432241942128825191250155059812761600","timestamp":1588934087562,"message":"1588934087562959,test-aurora-master-instance,rdsadmin,localhost,3,4124,QUERY,mysql,'SET @@sql_log_bin=on',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.0.2020-05-08-10-22.0.1","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434414220746300172645301586641563200296746566464241664","timestamp":1588934087417,"message":"1588934087417470,test-aurora-master-instance,rdsadmin,localhost,3,4119,QUERY,mysql,'SET @@sql_log_bin=off',0"},{"id":"35434414222218149355748322713982920606291538425858949121","timestamp":1588934087483,"message":"1588934087483379,test-aurora-master-instance,rdsadmin,localhost,3,4121,WRITE,mysql,rds_heartbeat2,"},{"id":"35434414223377788106071915117342777956469253224169930754","timestamp":1588934087535,"message":"1588934087535078,test-aurora-master-instance,rdsadmin,localhost,3,4122,QUERY,mysql,'select @@session.tx_read_only',0"},{"id":"35434414223400088851270445740484313674741901585675911171","timestamp":1588934087536,"message":"1588934087536123,test-aurora-master-instance,rdsadmin,localhost,3,4123,QUERY,mysql,'COMMIT',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.3.2020-05-08-10-22.0.3","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434414222329653081740975829616640168821148902769229824","timestamp":1588934087488,"message":"1588934087488222,test-aurora-master-instance,rdsadmin,localhost,3,4121,QUERY,mysql,'INSERT INTO mysql.rds_heartbeat2(id, value) values (1,1588934087417) ON DUPLICATE KEY UPDATE value = 1588934087417',0"},{"id":"35434414235509393494072574106264249667956330552803655681","timestamp":1588934088079,"message":"1588934088079694,test-aurora-master-instance,rdsadmin,localhost,2,4125,QUERY,mysql,'set local oscar_local_only_replica_host_status=1',0"},{"id":"35434414235531694239271104729405785386228978914309636098","timestamp":1588934088080,"message":"1588934088080209,test-aurora-master-instance,rdsadmin,localhost,2,4126,QUERY,mysql,'SELECT durable_lsn, current_read_point, server_id, last_update_timestamp FROM information_schema.replica_host_status',0"},{"id":"35434414235531694239271104729405785386228978914309636099","timestamp":1588934088080,"message":"1588934088080604,test-aurora-master-instance,rdsadmin,localhost,2,4127,QUERY,mysql,'set local oscar_local_only_replica_host_status=0',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.1.2020-05-08-10-22.0.3","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434414221727532961380649004905234281702961398451011584","timestamp":1588934087461,"message":"1588934087461583,test-aurora-master-instance,rdsadmin,localhost,3,4120,QUERY,mysql,'select @@session.tx_read_only',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.0.2020-05-08-10-22.0.3","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434414266284421868044834044084803122597585808883318784","timestamp":1588934089459,"message":"1588934089459430,test-aurora-master-instance,rdsadmin,localhost,3,4130,WRITE,mysql,rds_heartbeat2,"},{"id":"35434414267890075522339038910275374838228267837313908737","timestamp":1588934089531,"message":"1588934089531938,test-aurora-master-instance,rdsadmin,localhost,3,4133,QUERY,mysql,'SET @@sql_log_bin=on',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.1.2020-05-08-10-22.0.0","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434414266529730065228670898680592637099283915319279616","timestamp":1588934089470,"message":"1588934089470062,test-aurora-master-instance,rdsadmin,localhost,3,4130,QUERY,mysql,'INSERT INTO mysql.rds_heartbeat2(id, value) values (1,1588934089425) ON DUPLICATE KEY UPDATE value = 1588934089425',0"},{"id":"35434414267778571796346385794606592860367592159654182913","timestamp":1588934089526,"message":"1588934089526514,test-aurora-master-instance,rdsadmin,localhost,3,4132,QUERY,mysql,'COMMIT',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.2.2020-05-08-10-22.0.2","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434414265526196531294792857238923144470403114083155968","timestamp":1588934089425,"message":"1588934089425321,test-aurora-master-instance,rdsadmin,localhost,3,4128,QUERY,mysql,'SET @@sql_log_bin=off',0"},{"id":"35434414267555564344361079563118673507281404011127373825","timestamp":1588934089516,"message":"1588934089516651,test-aurora-master-instance,rdsadmin,localhost,3,4131,QUERY,mysql,'select @@session.tx_read_only',0"},{"id":"35434414278973545886008758611584961262877365102189346818","timestamp":1588934090028,"message":"1588934090028096,test-aurora-master-instance,rdsadmin,localhost,2,4134,QUERY,mysql,'set local oscar_local_only_replica_host_status=1',0"},{"id":"35434414278973545886008758611584961262877365102189346819","timestamp":1588934090028,"message":"1588934090028767,test-aurora-master-instance,rdsadmin,localhost,2,4135,QUERY,mysql,'SELECT durable_lsn, current_read_point, server_id, last_update_timestamp FROM information_schema.replica_host_status',0"},{"id":"35434414278995846631207289234726496981150013463695327236","timestamp":1588934090029,"message":"1588934090029113,test-aurora-master-instance,rdsadmin,localhost,2,4136,QUERY,mysql,'set local oscar_local_only_replica_host_status=0',0"}]}{"messageType":"DATA_MESSAGE","owner":"XXXXXXXXXXXX","logGroup":"/aws/rds/cluster/test-aurora-cluster/audit","logStream":"test-aurora-master-instance.audit.log.3.2020-05-08-10-22.0.2","subscriptionFilters":["Destination"],"logEvents":[{"id":"35434414265660001002485976596045713386919836301960740864","timestamp":1588934089431,"message":"1588934089431252,test-aurora-master-instance,rdsadmin,localhost,3,4129,QUERY,mysql,'select @@session.tx_read_only',0"}]}%                                                                                                                                                                               sakamaki.kazuyoshi@HL

このままでは、Athenaで確認を行えないので、Kinesis Data Firehoseを介すところでLambda Functionにてデータの変換を行います。こちらについては、過去のBlack BeltのQAに取り上げられていました。

Q8. Amazon Kinesis Firehose を利用してCloudWatch LogsをS3に転送してそれをAthena で分析したいのですが、Kinesis Firehoseを通すと{json}{json}のように1行に複数のJSONオブジェクトが保存されるようです。このデータを効率的にAthenaで分析するにはどういった方法がありますか??
A8. Amazon Kinesis FirehoseにはData TransformationをAWS Lambdaで行う機能がございますので,こちらを使って所望の形式に変換すると良いです.

Kinesis Data Firehose設定

配信ストリームの設定は以下となります。


配信ストリーム設定
$ aws firehose describe-delivery-stream \
  --delivery-stream-name delivery-stream-for-athena
{
    "DeliveryStreamDescription": {
        "DeliveryStreamName": "delivery-stream-for-athena",
        "DeliveryStreamARN": "arn:aws:firehose:ap-northeast-1:XXXXXXXXXXXX:deliverystream/delivery-stream-for-athena",
        "DeliveryStreamStatus": "ACTIVE",
        "DeliveryStreamEncryptionConfiguration": {
            "Status": "DISABLED"
        },
        "DeliveryStreamType": "DirectPut",
        "VersionId": "3",
        "CreateTimestamp": 1588932385.813,
        "LastUpdateTimestamp": 1588932473.794,
        "Destinations": [
            {
                "DestinationId": "destinationId-000000000001",
                "S3DestinationDescription": {
                    "RoleARN": "arn:aws:iam::XXXXXXXXXXXX:role/TestFirehosetoS3Role",
                    "BucketARN": "arn:aws:s3:::cloudwatch-logs-for-athena-convert",
                    "Prefix": "test-aurora-cluster/audit/!{timestamp:'year='yyyy'/month='MM'/day='dd'/hour='HH}/",
                    "ErrorOutputPrefix": "error-test-aurora-cluster/audit/!{timestamp:'year='yyyy'/month='MM'/day='dd'/hour='HH}/!{firehose:error-output-type}",
                    "BufferingHints": {
                        "SizeInMBs": 1,
                        "IntervalInSeconds": 60
                    },
                    "CompressionFormat": "GZIP",
                    "EncryptionConfiguration": {
                        "NoEncryptionConfig": "NoEncryption"
                    },
                    "CloudWatchLoggingOptions": {
                        "Enabled": true,
                        "LogGroupName": "/aws/kinesisfirehose/delivery-stream-for-athena",
                        "LogStreamName": "S3Delivery"
                    }
                },
                "ExtendedS3DestinationDescription": {
                    "RoleARN": "arn:aws:iam::XXXXXXXXXXXX:role/TestFirehosetoS3Role",
                    "BucketARN": "arn:aws:s3:::cloudwatch-logs-for-athena-convert",
                    "Prefix": "test-aurora-cluster/audit/!{timestamp:'year='yyyy'/month='MM'/day='dd'/hour='HH}/",
                    "ErrorOutputPrefix": "error-test-aurora-cluster/audit/!{timestamp:'year='yyyy'/month='MM'/day='dd'/hour='HH}/!{firehose:error-output-type}",
                    "BufferingHints": {
                        "SizeInMBs": 1,
                        "IntervalInSeconds": 60
                    },
                    "CompressionFormat": "GZIP",
                    "EncryptionConfiguration": {
                        "NoEncryptionConfig": "NoEncryption"
                    },
                    "CloudWatchLoggingOptions": {
                        "Enabled": true,
                        "LogGroupName": "/aws/kinesisfirehose/delivery-stream-for-athena",
                        "LogStreamName": "S3Delivery"
                    },
                    "ProcessingConfiguration": {
                        "Enabled": true,
                        "Processors": [
                            {
                                "Type": "Lambda",
                                "Parameters": [
                                    {
                                        "ParameterName": "LambdaArn",
                                        "ParameterValue": "arn:aws:lambda:ap-northeast-1:XXXXXXXXXXXX:function:kinesis-firehose-cloudwatch-logs-processor-python:$LATEST"
                                    },
                                    {
                                        "ParameterName": "NumberOfRetries",
                                        "ParameterValue": "3"
                                    },
                                    {
                                        "ParameterName": "RoleArn",
                                        "ParameterValue": "arn:aws:iam::XXXXXXXXXXXX:role/TestFirehosetoS3Role"
                                    },
                                    {
                                        "ParameterName": "BufferSizeInMBs",
                                        "ParameterValue": "1"
                                    },
                                    {
                                        "ParameterName": "BufferIntervalInSeconds",
                                        "ParameterValue": "60"
                                    }
                                ]
                            }
                        ]
                    },
                    "S3BackupMode": "Enabled",
                    "S3BackupDescription": {
                        "RoleARN": "arn:aws:iam::XXXXXXXXXXXX:role/TestFirehosetoS3Role",
                        "BucketARN": "arn:aws:s3:::cloudwatch-logs-for-athena-backup",
                        "Prefix": "source_records/",
                        "ErrorOutputPrefix": "!{firehose:error-output-type}/",
                        "BufferingHints": {
                            "SizeInMBs": 5,
                            "IntervalInSeconds": 300
                        },
                        "CompressionFormat": "UNCOMPRESSED",
                        "EncryptionConfiguration": {
                            "NoEncryptionConfig": "NoEncryption"
                        },
                        "CloudWatchLoggingOptions": {
                            "Enabled": false
                        }
                    },
                    "DataFormatConversionConfiguration": {
                        "Enabled": false
                    }
                }
            }
        ],
        "HasMoreDestinations": false
    }
}

S3 Select時の設定から変更している箇所を中心に補足します。

ProcessingConfiguration

ログデータの変換にLambda Functionを指定しています。作り込みが発生する箇所です。そのまま利用できそうなBluePrintがあったので今回はそちらを利用しました。BluePrintのコードをこちらに添付しておきます。


kinesis-firehose-cloudwatch-logs-processor-python
"""
For processing data sent to Firehose by Cloudwatch Logs subscription filters.

Cloudwatch Logs sends to Firehose records that look like this:

{
  "messageType": "DATA_MESSAGE",
  "owner": "123456789012",
  "logGroup": "log_group_name",
  "logStream": "log_stream_name",
  "subscriptionFilters": [
    "subscription_filter_name"
  ],
  "logEvents": [
    {
      "id": "01234567890123456789012345678901234567890123456789012345",
      "timestamp": 1510109208016,
      "message": "log message 1"
    },
    {
      "id": "01234567890123456789012345678901234567890123456789012345",
      "timestamp": 1510109208017,
      "message": "log message 2"
    }
    ...
  ]
}

The data is additionally compressed with GZIP.

The code below will:

1) Gunzip the data
2) Parse the json
3) Set the result to ProcessingFailed for any record whose messageType is not DATA_MESSAGE, thus redirecting them to the
   processing error output. Such records do not contain any log events. You can modify the code to set the result to
   Dropped instead to get rid of these records completely.
4) For records whose messageType is DATA_MESSAGE, extract the individual log events from the logEvents field, and pass
   each one to the transformLogEvent method. You can modify the transformLogEvent method to perform custom
   transformations on the log events.
5) Concatenate the result from (4) together and set the result as the data of the record returned to Firehose. Note that
   this step will not add any delimiters. Delimiters should be appended by the logic within the transformLogEvent
   method.
6) Any additional records which exceed 6MB will be re-ingested back into Firehose.

"""

import base64
import json
import gzip
import StringIO
import boto3


def transformLogEvent(log_event):
    """Transform each log event.

    The default implementation below just extracts the message and appends a newline to it.

    Args:
    log_event (dict): The original log event. Structure is {"id": str, "timestamp": long, "message": str}

    Returns:
    str: The transformed log event.
    """
    return log_event['message'] + '\n'


def processRecords(records):
    for r in records:
        data = base64.b64decode(r['data'])
        striodata = StringIO.StringIO(data)
        with gzip.GzipFile(fileobj=striodata, mode='r') as f:
            data = json.loads(f.read())

        recId = r['recordId']
        """
        CONTROL_MESSAGE are sent by CWL to check if the subscription is reachable.
        They do not contain actual data.
        """
        if data['messageType'] == 'CONTROL_MESSAGE':
            yield {
                'result': 'Dropped',
                'recordId': recId
            }
        elif data['messageType'] == 'DATA_MESSAGE':
            data = ''.join([transformLogEvent(e) for e in data['logEvents']])
            data = base64.b64encode(data)
            yield {
                'data': data,
                'result': 'Ok',
                'recordId': recId
            }
        else:
            yield {
                'result': 'ProcessingFailed',
                'recordId': recId
            }


def putRecordsToFirehoseStream(streamName, records, client, attemptsMade, maxAttempts):
    failedRecords = []
    codes = []
    errMsg = ''
    # if put_record_batch throws for whatever reason, response['xx'] will error out, adding a check for a valid
    # response will prevent this
    response = None
    try:
        response = client.put_record_batch(DeliveryStreamName=streamName, Records=records)
    except Exception as e:
        failedRecords = records
        errMsg = str(e)

    # if there are no failedRecords (put_record_batch succeeded), iterate over the response to gather results
    if not failedRecords and response and response['FailedPutCount'] > 0:
        for idx, res in enumerate(response['RequestResponses']):
            # (if the result does not have a key 'ErrorCode' OR if it does and is empty) => we do not need to re-ingest
            if 'ErrorCode' not in res or not res['ErrorCode']:
                continue

            codes.append(res['ErrorCode'])
            failedRecords.append(records[idx])

        errMsg = 'Individual error codes: ' + ','.join(codes)

    if len(failedRecords) > 0:
        if attemptsMade + 1 < maxAttempts:
            print('Some records failed while calling PutRecordBatch to Firehose stream, retrying. %s' % (errMsg))
            putRecordsToFirehoseStream(streamName, failedRecords, client, attemptsMade + 1, maxAttempts)
        else:
            raise RuntimeError('Could not put records after %s attempts. %s' % (str(maxAttempts), errMsg))


def putRecordsToKinesisStream(streamName, records, client, attemptsMade, maxAttempts):
    failedRecords = []
    codes = []
    errMsg = ''
    # if put_records throws for whatever reason, response['xx'] will error out, adding a check for a valid
    # response will prevent this
    response = None
    try:
        response = client.put_records(StreamName=streamName, Records=records)
    except Exception as e:
        failedRecords = records
        errMsg = str(e)

    # if there are no failedRecords (put_record_batch succeeded), iterate over the response to gather results
    if not failedRecords and response and response['FailedRecordCount'] > 0:
        for idx, res in enumerate(response['Records']):
            # (if the result does not have a key 'ErrorCode' OR if it does and is empty) => we do not need to re-ingest
            if 'ErrorCode' not in res or not res['ErrorCode']:
                continue

            codes.append(res['ErrorCode'])
            failedRecords.append(records[idx])

        errMsg = 'Individual error codes: ' + ','.join(codes)

    if len(failedRecords) > 0:
        if attemptsMade + 1 < maxAttempts:
            print('Some records failed while calling PutRecords to Kinesis stream, retrying. %s' % (errMsg))
            putRecordsToKinesisStream(streamName, failedRecords, client, attemptsMade + 1, maxAttempts)
        else:
            raise RuntimeError('Could not put records after %s attempts. %s' % (str(maxAttempts), errMsg))


def createReingestionRecord(isSas, originalRecord):
    if isSas:
        return {'data': base64.b64decode(originalRecord['data']), 'partitionKey': originalRecord['kinesisRecordMetadata']['partitionKey']}
    else:
        return {'data': base64.b64decode(originalRecord['data'])}


def getReingestionRecord(isSas, reIngestionRecord):
    if isSas:
        return {'Data': reIngestionRecord['data'], 'PartitionKey': reIngestionRecord['partitionKey']}
    else:
        return {'Data': reIngestionRecord['data']}


def handler(event, context):
    isSas = 'sourceKinesisStreamArn' in event
    streamARN = event['sourceKinesisStreamArn'] if isSas else event['deliveryStreamArn']
    region = streamARN.split(':')[3]
    streamName = streamARN.split('/')[1]
    records = list(processRecords(event['records']))
    projectedSize = 0
    dataByRecordId = {rec['recordId']: createReingestionRecord(isSas, rec) for rec in event['records']}
    putRecordBatches = []
    recordsToReingest = []
    totalRecordsToBeReingested = 0

    for idx, rec in enumerate(records):
        if rec['result'] != 'Ok':
            continue
        projectedSize += len(rec['data']) + len(rec['recordId'])
        # 6000000 instead of 6291456 to leave ample headroom for the stuff we didn't account for
        if projectedSize > 6000000:
            totalRecordsToBeReingested += 1
            recordsToReingest.append(
                getReingestionRecord(isSas, dataByRecordId[rec['recordId']])
            )
            records[idx]['result'] = 'Dropped'
            del(records[idx]['data'])

        # split out the record batches into multiple groups, 500 records at max per group
        if len(recordsToReingest) == 500:
            putRecordBatches.append(recordsToReingest)
            recordsToReingest = []

    if len(recordsToReingest) > 0:
        # add the last batch
        putRecordBatches.append(recordsToReingest)

    # iterate and call putRecordBatch for each group
    recordsReingestedSoFar = 0
    if len(putRecordBatches) > 0:
        client = boto3.client('kinesis', region_name=region) if isSas else boto3.client('firehose', region_name=region)
        for recordBatch in putRecordBatches:
            if isSas:
                putRecordsToKinesisStream(streamName, recordBatch, client, attemptsMade=0, maxAttempts=20)
            else:
                putRecordsToFirehoseStream(streamName, recordBatch, client, attemptsMade=0, maxAttempts=20)
            recordsReingestedSoFar += len(recordBatch)
            print('Reingested %d/%d records out of %d' % (recordsReingestedSoFar, totalRecordsToBeReingested, len(event['records'])))
    else:
        print('No records to be reingested')

    return {"records": records}

なお、こちらのBluePrintはランタイムがPython 2.7のため、本番利用する際はコード変換などを検討してください。

なお、Kinesis Data FirehoseからのLambda Functionへ送信されるイベントは以下が参考になります。

S3DestinationDescription

出力先のバケットを変更し、呼び出しされるLambda Function(BluePrint)にて、圧縮データ(ログデータ)を展開しているので、S3へ出力する際にKinesis Data Firehoseにて圧縮しています。また、Athenaで解析がしやすいように、カスタムパーティションも設定しています。

CloudWatch Logsサブスクリプションフィルタ設定

サブスクリプションフィルタの設定は以下となります。


サブスクリプションフィルタ設定
$ aws logs describe-subscription-filters \
  --log-group-name /aws/rds/cluster/test-aurora-cluster/audit
{
    "subscriptionFilters": [
        {
            "filterName": "Destination",
            "logGroupName": "/aws/rds/cluster/test-aurora-cluster/audit",
            "filterPattern": "",
            "destinationArn": "arn:aws:firehose:ap-northeast-1:XXXXXXXXXXXX:deliverystream/delivery-stream-for-athena",
            "roleArn": "arn:aws:iam::XXXXXXXXXXXX:role/TestCWLtoKinesisFirehoseRole",
            "distribution": "ByLogStream",
            "creationTime": 1588935891719
        }
    ]
}

CloudWatch Logロギング

後ほどログの確認が行いやすいよう、AuroraにアクセスしCloudWatch Logへロギングしました。


Auroraでのオペレーション
MySQL [(none)]> select now();
+---------------------+
| now()               |
+---------------------+
| 2020-05-08 20:06:09 |
+---------------------+
1 row in set (0.00 sec)

MySQL [(none)]> select user();
+-----------------+
| user()          |
+-----------------+
| admin@10.0.1.54 |
+-----------------+
1 row in set (0.00 sec)

MySQL [(none)]> select host,user,authentication_string from mysql.user;
+-----------+-----------+-------------------------------------------+
| host      | user      | authentication_string                     |
+-----------+-----------+-------------------------------------------+
| %         | admin     | *2470C0C06DEE42FD1618BB99005ADCA2EC9D1E19 |
| %         | test_user | *2470C0C06DEE42FD1618BB99005ADCA2EC9D1E19 |
| %         | testadmin | *2470C0C06DEE42FD1618BB99005ADCA2EC9D1E19 |
| localhost | mysql.sys | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE |
| localhost | rdsadmin  | *8C0E64674BB3F606FF339142F68298EB1061E446 |
+-----------+-----------+-------------------------------------------+
5 rows in set (0.01 sec)

MySQL [(none)]> select now();
+---------------------+
| now()               |
+---------------------+
| 2020-05-08 20:06:10 |
+---------------------+
1 row in set (0.00 sec)

しばらくすると、CloudWatch Logへのロギングが確認できました。


CloudWatch Logロギング確認
$ QUERY_ID=`aws logs start-query \
  --log-group-name '/aws/rds/cluster/test-aurora-cluster/audit' \
  --start-time 1588935950 \
  --end-time 1588936010 \
  --query-string \
    'parse "*,*,*,*,*,*,*,*,*,*" as timestamp,serverhost,username,host,connectionid,queryid,operation,database,object,retcode
    | filter username = "admin"
    | sort timestamp asc' \
  --output text`
$ aws logs get-query-results \
  --query-id ${QUERY_ID} \
  --output table
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                        GetQueryResults                                                                                       |
+-------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
|  status                                                                             |  Complete                                                                                              |
+-------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
||                                                                                           results                                                                                          ||
|+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+|
||     field    |                                                                                    value                                                                                    ||
|+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+|
||  timestamp   |  1588935964038921                                                                                                                                                           ||
||  serverhost  |  test-aurora-master-instance                                                                                                                                                ||
||  username    |  admin                                                                                                                                                                      ||
||  host        |  10.0.1.54                                                                                                                                                                  ||
||  connectionid|  137                                                                                                                                                                        ||
||  queryid     |  0                                                                                                                                                                          ||
||  operation   |  CONNECT                                                                                                                                                                    ||
||  database    |                                                                                                                                                                             ||
||  object      |                                                                                                                                                                             ||
||  retcode     |  0                                                                                                                                                                          ||
||  @ptr        |  CnYKOwo3MzkyMTM4Nzg5NzY0Oi9hd3MvcmRzL2NsdXN0ZXIvdGVzdC1hdXJvcmEtY2x1c3Rlci9hdWRpdBAFEjcaGAIF55NVCwAAAAF4+3PpAAXrU9EwAAABsiABKIO42p+fLjCZ9eOfny44lAFA7NEBSKNOUMZKEAUYAQ==   ||
||  timestamp   |  1588935964039296                                                                                                                                                           ||
||  serverhost  |  test-aurora-master-instance                                                                                                                                                ||
||  username    |  admin                                                                                                                                                                      ||
||  host        |  10.0.1.54                                                                                                                                                                  ||
||  connectionid|  137                                                                                                                                                                        ||
||  queryid     |  14821                                                                                                                                                                      ||
||  operation   |  QUERY                                                                                                                                                                      ||
||  database    |                                                                                                                                                                             ||
||  object      |  'select @@version_comment limit 1'                                                                                                                                         ||
||  retcode     |  0                                                                                                                                                                          ||
||  @ptr        |  CnYKOwo3MzkyMTM4Nzg5NzY0Oi9hd3MvcmRzL2NsdXN0ZXIvdGVzdC1hdXJvcmEtY2x1c3Rlci9hdWRpdBAFEjcaGAIF55NVCwAAAAF4+3PpAAXrU9EwAAABsiABKIO42p+fLjCZ9eOfny44lAFA7NEBSKNOUMZKEAYYAQ==   ||
||  timestamp   |  1588935969213615                                                                                                                                                           ||
||  serverhost  |  test-aurora-master-instance                                                                                                                                                ||
||  username    |  admin                                                                                                                                                                      ||
||  host        |  10.0.1.54                                                                                                                                                                  ||
||  connectionid|  137                                                                                                                                                                        ||
||  queryid     |  14843                                                                                                                                                                      ||
||  operation   |  QUERY                                                                                                                                                                      ||
||  database    |                                                                                                                                                                             ||
||  object      |  'select now()'                                                                                                                                                             ||
||  retcode     |  0                                                                                                                                                                          ||
||  @ptr        |  CnUKOwo3MzkyMTM4Nzg5NzY0Oi9hd3MvcmRzL2NsdXN0ZXIvdGVzdC1hdXJvcmEtY2x1c3Rlci9hdWRpdBABEjYaGAIF4+HZrwAAAAGPvrPYAAXrU9CgAAAF8iABKLeY2p+fLjDdwOOfny44eECLowFIgUVQp0EQBhgB       ||
||  timestamp   |  1588935969214210                                                                                                                                                           ||
||  serverhost  |  test-aurora-master-instance                                                                                                                                                ||
||  username    |  admin                                                                                                                                                                      ||
||  host        |  10.0.1.54                                                                                                                                                                  ||
||  connectionid|  137                                                                                                                                                                        ||
||  queryid     |  14844                                                                                                                                                                      ||
||  operation   |  QUERY                                                                                                                                                                      ||
||  database    |                                                                                                                                                                             ||
||  object      |  'select user()'                                                                                                                                                            ||
||  retcode     |  0                                                                                                                                                                          ||
||  @ptr        |  CnUKOwo3MzkyMTM4Nzg5NzY0Oi9hd3MvcmRzL2NsdXN0ZXIvdGVzdC1hdXJvcmEtY2x1c3Rlci9hdWRpdBABEjYaGAIF4+HZrwAAAAGPvrPYAAXrU9CgAAAF8iABKLeY2p+fLjDdwOOfny44eECLowFIgUVQp0EQCBgB       ||
||  timestamp   |  1588935969219838                                                                                                                                                           ||
||  serverhost  |  test-aurora-master-instance                                                                                                                                                ||
||  username    |  admin                                                                                                                                                                      ||
||  host        |  10.0.1.54                                                                                                                                                                  ||
||  connectionid|  137                                                                                                                                                                        ||
||  queryid     |  14845                                                                                                                                                                      ||
||  operation   |  READ                                                                                                                                                                       ||
||  database    |  mysql                                                                                                                                                                      ||
||  object      |  user                                                                                                                                                                       ||
||  retcode     |                                                                                                                                                                             ||
||  @ptr        |  CnUKOwo3MzkyMTM4Nzg5NzY0Oi9hd3MvcmRzL2NsdXN0ZXIvdGVzdC1hdXJvcmEtY2x1c3Rlci9hdWRpdBABEjYaGAIF4+HZrwAAAAGPvrPYAAXrU9CgAAAF8iABKLeY2p+fLjDdwOOfny44eECLowFIgUVQp0EQBxgB       ||
||  timestamp   |  1588935969219940                                                                                                                                                           ||
||  serverhost  |  test-aurora-master-instance                                                                                                                                                ||
||  username    |  admin                                                                                                                                                                      ||
||  host        |  10.0.1.54                                                                                                                                                                  ||
||  connectionid|  137                                                                                                                                                                        ||
||  queryid     |  14845                                                                                                                                                                      ||
||  operation   |  QUERY                                                                                                                                                                      ||
||  database    |  mysql                                                                                                                                                                      ||
||  object      |  'select host                                                                                                                                                               ||
||  retcode     |  user,authentication_string from mysql.user',0                                                                                                                              ||
||  @ptr        |  CnYKOwo3MzkyMTM4Nzg5NzY0Oi9hd3MvcmRzL2NsdXN0ZXIvdGVzdC1hdXJvcmEtY2x1c3Rlci9hdWRpdBADEjcaGAIF6oyZCAAAAAB9A/cvAAXrU8rAAAAEgiABKNCa1J+fLjDN3t2fny44kgFAsLoBSIFKUKRGEGwYAQ==   ||
||  timestamp   |  1588935970114910                                                                                                                                                           ||
||  serverhost  |  test-aurora-master-instance                                                                                                                                                ||
||  username    |  admin                                                                                                                                                                      ||
||  host        |  10.0.1.54                                                                                                                                                                  ||
||  connectionid|  137                                                                                                                                                                        ||
||  queryid     |  14852                                                                                                                                                                      ||
||  operation   |  QUERY                                                                                                                                                                      ||
||  database    |  mysql                                                                                                                                                                      ||
||  object      |  'select now()'                                                                                                                                                             ||
||  retcode     |  0                                                                                                                                                                          ||
||  @ptr        |  CnYKOwo3MzkyMTM4Nzg5NzY0Oi9hd3MvcmRzL2NsdXN0ZXIvdGVzdC1hdXJvcmEtY2x1c3Rlci9hdWRpdBACEjcaGAIF5gFPGAAAAAKWGiDIAAXrU86AAAAAgiABKM2D2J+fLjC5l+Gfny44gQFArbQBSPlIUJxFECEYAQ==   ||
|+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+|
||                                                                                         statistics                                                                                         ||
|+----------------------------------------------------------------------------------------------------------------+---------------------------------------------------------------------------+|
||  bytesScanned                                                                                                  |  276868.0                                                                 ||
||  recordsMatched                                                                                                |  7.0                                                                      ||
||  recordsScanned                                                                                                |  1590.0                                                                   ||
|+----------------------------------------------------------------------------------------------------------------+---------------------------------------------------------------------------+|
sakamaki.kazuyoshi@HL00257

Atenaクエリ実行

Atenaにてテーブルを作成します。以下クエリを実行します。

クエリ

CREATE EXTERNAL TABLE cwl_logs (
  `timestamp` string,
  `serverhost` string,
  `username` string,
  `host` string,
  `connectionid` INTEGER,
  `queryid` INTEGER,
  `operation` string,
  `database` string,
  `object` string,
  `retcode` string
)
PARTITIONED BY (year int, month int, day int ,hour int)
ROW FORMAT SERDE 'org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
WITH SERDEPROPERTIES (
  'serialization.format' = ',',
  'field.delim' = ','
) LOCATION 's3://cloudwatch-logs-for-athena-convert/test-aurora-cluster/audit/'
TBLPROPERTIES ('has_encrypted_data'='false');

監査ログの形式にあわせデータタイプを指定し、Kinesis Data Firehoseで指定したカスタムパーティションにあわせ、パーティションを作成しています。

パーティションを追加します。以下はクエリと実行結果です。

クエリ

MSCK REPAIR TABLE cwl_logs

結果

Partitions not in metastore:	cwl_logs:year=2020/month=05/day=08/hour=11
Repair: Added partition to metastore cwl_logs:year=2020/month=05/day=08/hour=11

パーティションを確認します。以下、クエリと実行結果です。

クエリ

SHOW PARTITIONS cwl_logs

結果

year=2020/month=05/day=08/hour=11

さきほど実施したAuroraでのオペレーションを抽出してみます。以下、クエリと実行結果です。

クエリ

SELECT * FROM cwl_logs WHERE year = 2020 AND month = 5 AND day = 8 AND hour = 11 AND username = 'admin';

結果

"timestamp","serverhost","username","host","connectionid","queryid","operation","database","object","retcode","year","month","day","hour"
"1588936254655024","test-aurora-master-instance","admin","10.0.1.54","137","0","DISCONNECT","","","0","2020","5","8","11"
"1588935964038921","test-aurora-master-instance","admin","10.0.1.54","137","0","CONNECT","","","0","2020","5","8","11"
"1588935964039296","test-aurora-master-instance","admin","10.0.1.54","137","14821","QUERY","","'select @@version_comment limit 1'","0","2020","5","8","11"
"1588935969213615","test-aurora-master-instance","admin","10.0.1.54","137","14843","QUERY","","'select now()'","0","2020","5","8","11"
"1588935969219838","test-aurora-master-instance","admin","10.0.1.54","137","14845","READ","mysql","user","","2020","5","8","11"
"1588935969219940","test-aurora-master-instance","admin","10.0.1.54","137","14845","QUERY","mysql","'select host","user","2020","5","8","11"
"1588935970114910","test-aurora-master-instance","admin","10.0.1.54","137","14852","QUERY","mysql","'select now()'","0","2020","5","8","11"
"1588935969214210","test-aurora-master-instance","admin","10.0.1.54","137","14844","QUERY","","'select user()'","0","2020","5","8","11"

さきほど実施したAuroraでのオペレーションをログから確認することができました。

さいごに

確認したいオペレーションの日時などが把握できていれば、S3 Selectを利用することでお手軽に確認ができますが、一方、オペレーションの日時が不明な場合や、複数ファイルにまたがった確認を行う場合はAtenaを利用した方が捗るかと思います。ただし、作り込みが発生しますので、参照頻度などを考慮し、検討いただければと思います。