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[JAWS-UG CLI] RDS:#3 DBインスタンスの更新 (拡張モニタリングの有効化)

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前提条件

RDSへの権限

RDSに対してフル権限があること。

EC2への権限

EC2への読み取り権限があること。

AWS CLI

以下のバージョンで動作確認済

  • AWS CLI 1.11.28
コマンド
aws --version

結果(例):

  aws-cli/1.11.28 Python/2.7.10 Darwin/15.6.0 botocore/1.4.85

バージョンが古い場合は最新版に更新しましょう。

コマンド
sudo -H pip install -U awscli

AWSアカウントの属性

AWSアカウントがEC2-Classicに対応していないこと。

コマンド
AWS_SUPPORT_PLATFORMS=$( \
         aws ec2 describe-account-attributes \
           --query 'AccountAttributes[?AttributeName == `supported-platforms`].AttributeValues[].AttributeValue' \
           --output text \
) \
        && echo ${AWS_SUPPORT_PLATFORMS}

結果:

  VPC

注釈: 'VPC'の他に'EC2'が表示される場合、別のアカウントを作成もしくは
利用し てください。

  1. 準備
    =======

0.1. リージョンの決定

変数の設定
export AWS_DEFAULT_REGION='ap-northeast-1'

0.2. 変数の確認

プロファイルが想定のものになっていることを確認します。

変数の確認
aws configure list

結果(例):

        Name                    Value             Type    Location
        ----                    -----             ----    --------
     profile       rdsFull-prjz-mbp13        env    AWS_DEFAULT_PROFILE
  access_key     ****************XXXX shared-credentials-file
  secret_key     ****************XXXX shared-credentials-file
      region        ap-northeast-1        env    AWS_DEFAULT_REGION
  1. 事前作業
    ===========

1.1. DB Instance Identifierの指定

変数の設定
RDS_INSTANCE_IDENT="postgre-handson-20161114"
コマンド
aws rds describe-db-instances \
        --db-instance-identifier ${RDS_INSTANCE_IDENT} \
        --query 'DBInstances[].{MonitoringInterval:MonitoringInterval,MonitoringRoleArn:MonitoringRoleArn}'

結果(例):

  [
    {
      "MonitoringInterval": 0
    }
  ]

1.2. 監視周期の指定

変数の設定
RDS_MONITORING_INTERVAL="15"

1.3. IAMロールの指定

変数の設定
IAM_ROLE_NAME="RDSMonitoringRole"

ARNを取得します。

コマンド
IAM_ROLE_ARN=$( \
        aws iam get-role \
          --role-name ${IAM_ROLE_NAME} \
          --query 'Role.Arn' \
          --output text \
) \
        && echo ${IAM_ROLE_ARN}

結果(例):

  arn:aws:iam::XXXXXXXXXXXX:role/RDSMonitoringRole
  1. DBインスタンスの変更
    =======================

2.1. 起動時刻の確認

変数の設定
DATETIME_UTC=$( date -u '+%Y-%m-%dT%H:%MZ' ) \
        && echo ${DATETIME_UTC}

結果(例):

  2016-12-18T01:23Z

2.2. DBインスタンスの変更

コマンド
aws rds modify-db-instance \
        --db-instance-identifier ${RDS_INSTANCE_IDENT} \
        --monitoring-interval ${RDS_MONITORING_INTERVAL} \
        --monitoring-role-arn ${IAM_ROLE_ARN} \
        --apply-immediately

結果(例):

  {
    "DBInstance": {
      "PubliclyAccessible": false,
      "MasterUsername": "pgadmin",
      "MonitoringInterval": 15,
      "LicenseModel": "postgresql-license",
      "VpcSecurityGroups": [
          {
              "Status": "active",
              "VpcSecurityGroupId": "sg-xxxxxxxx"
          }
      ],
      "InstanceCreateTime": "2016-12-18T01:23:45.678Z",
      "CopyTagsToSnapshot": false,
      "OptionGroupMemberships": [
          {
              "Status": "in-sync",
              "OptionGroupName": "default:postgres-9-5"
          }
      ],
      "PendingModifiedValues": {},
      "Engine": "postgres",
      "MultiAZ": false,
      "LatestRestorableTime": "2016-12-18T01:23:45Z",
      "DBSecurityGroups": [],
      "DBParameterGroups": [
          {
              "DBParameterGroupName": "default.postgres9.5",
              "ParameterApplyStatus": "in-sync"
          }
      ],
      "AutoMinorVersionUpgrade": true,
      "PreferredBackupWindow": "19:06-19:36",
      "DBSubnetGroup": {
          "Subnets": [
              {
                  "SubnetStatus": "Active",
                  "SubnetIdentifier": "subnet-xxxxxxxx",
                  "SubnetAvailabilityZone": {
                      "Name": "ap-northeast-1a"
                  }
              },
              {
                  "SubnetStatus": "Active",
                  "SubnetIdentifier": "subnet-xxxxxxxx",
                  "SubnetAvailabilityZone": {
                      "Name": "ap-northeast-1c"
                  }
              }
          ],
          "DBSubnetGroupName": "postgrehandson",
          "VpcId": "vpc-xxxxxxxx",
          "DBSubnetGroupDescription": "PostgreSQL Redmine",
          "SubnetGroupStatus": "Complete"
      },
      "ReadReplicaDBInstanceIdentifiers": [],
      "AllocatedStorage": 5,
      "DBInstanceArn": "arn:aws:rds:ap-northeast-1:XXXXXXXXXXXX:db:postgre-handson-20161114",
      "BackupRetentionPeriod": 1,
      "DBName": "handson",
      "PreferredMaintenanceWindow": "tue:13:00-tue:13:30",
      "Endpoint": {
          "HostedZoneId": "ZXXXXXXXXXXXXX",
          "Port": 5432,
          "Address": "postgre-handson-20161114.xxxxxxxxxxxx.ap-northeast-1.rds.amazonaws.com"
      },
      "DBInstanceStatus": "available",
      "EngineVersion": "9.5.4",
      "AvailabilityZone": "ap-northeast-1c",
      "DomainMemberships": [],
      "MonitoringRoleArn": "arn:aws:iam::XXXXXXXXXXXX:role/RDSMonitoringRole",
      "StorageType": "standard",
      "DbiResourceId": "db-XXXXXXXXXXXXXXXXXXXXXXXXXX",
      "CACertificateIdentifier": "rds-ca-2015",
      "StorageEncrypted": false,
      "DBInstanceClass": "db.t2.micro",
      "DbInstancePort": 0,
      "DBInstanceIdentifier": "postgre-handson-20161114"
    }
  }
  1. 事後確認
    ===========

3.1. イベントの確認

変数の設定
RDS_EVENT_TYPE='db-instance'
RDS_EVENT_START=${DATETIME_UTC}
RDS_MAX_ITEMS='1'
コマンド
aws rds describe-events \
        --start-time ${RDS_EVENT_START} \
        --source-type ${RDS_EVENT_TYPE} \
        --max-items ${RDS_MAX_ITEMS}

結果(例):

  {
    "Events": [
      {
          "EventCategories": [
              "configuration change"
          ],
          "SourceType": "db-instance",
          "SourceArn": "arn:aws:rds:ap-northeast-1:XXXXXXXXXXXX:db:postgre-handson-20161114",
          "Date": "2016-12-18T01:23:45.678Z",
          "Message": "Monitoring Interval changed to 15",
          "SourceIdentifier": "postgre-handson-20161114"
      }
    ]
  }

3.2. DBインスタンス情報の確認

コマンド
aws rds describe-db-instances \
        --db-instance-identifier ${RDS_INSTANCE_IDENT} \
        --query 'DBInstances[].{MonitoringInterval:MonitoringInterval,MonitoringRoleArn:MonitoringRoleArn}'

結果(例):

  [
    {
      "MonitoringRoleArn": "arn:aws:iam::XXXXXXXXXXXX:role/RDSMonitoringRole",
      "MonitoringInterval": 15
    }
  ]

完了

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