클라우드 네이티브 데이터베이스 서비스로 Oracle RAC 전환 - 김지훈 :: AWS 클라우드 마이그레이션 온라인
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온디맨드 다시보기: https://www.youtube.com/watch?v=dBLv4V3hRRQ 엔터프라이즈 미션 크리티컬 시스템을 위해서 다양한 고객 환경에서 Oracle RAC와 같은 대용량 데이터베이스가 운영중에 있습니다. 클라우드를 도입하는 많은 고객이 이러한 대용량 데이터베이스 환경을 클라우드 네이티브 서비스가 이를 대체할 수 있을지에 많은 의구심을 가지고 있습니다. AWS의 클라우드 네이티브 데이터베이스 서비스의 기술적인 관점에서 대용량 데이터 운영 관리의 특성을 살펴 보고 Oracle RAC의 완벽한 대체제로 충분한 역량을 가지고 있음을 소개합니다.
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클라우드 네이티브 데이터베이스 서비스로 Oracle RAC 전환 - 김지훈 :: AWS 클라우드 마이그레이션 온라인
- 1. © 2021, Amazon Web Services, Inc. or its Affiliates. Jihoon Kim AWS DB Specialist SA Can Amazon Aurora Replace Oracle RAC?
- 2. © 2021, Amazon Web Services, Inc. or its Affiliates. 강연 중 질문하는 방법 Go to Webinar “Chat/채팅” 창에 자신이 질문한 내역이 표시됩니다. 기본적으로 모든 질문은 공개로 답변 됩니다만 본인만 답변을 받고 싶으면 (비공개)라고 하고 질문해 주시면 됩니다. 본 컨텐츠는 고객의 편의를 위해 AWS 서비스 설명을 위해 온라인 세미나용으로 별도로 제작, 제공된 것입니다. 만약 AWS 사이트와 컨텐츠 상에서 차이나 불일치가 있을 경우, AWS 사이트(aws.amazon.com)가 우선합니다. 또한 AWS 사이트 상에서 한글 번역문과 영어 원문에 차이나 불일치가 있을 경우(번역의 지체로 인한 경우 등 포함), 영어 원문이 우선합니다. AWS는 본 컨텐츠에 포함되거나 컨텐츠를 통하여 고객에게 제공된 일체의 정보, 콘텐츠, 자료, 제품(소프트웨어 포함) 또는 서비스를 이용함으로 인하여 발생하는 여하한 종류의 손해에 대하여 어떠한 책임도 지지 아니하며, 이는 직접 손해, 간접 손해, 부수적 손해, 징벌적 손해 및 결과적 손해를 포함하되 이에 한정되지 아니합니다. 고지 사항(Disclaimer)
- 3. © 2021, Amazon Web Services, Inc. or its Affiliates. What is Oracle RAC? • Active-Active Clustered Database • Shared Everything Storage • High Performance with Parallelism and Partitioning • Utilize various built-in Security Features • Utilize built-in backup & monitoirng Shared Storage Service Listener Instance n ASM Oracle Clusterware Operating System Inter Connect Cache Fusion Redo / Archive Logs Data Files Control Files OCR / Voting Disks Service Listener Instance 1 ASM Oracle Clusterware Operating System VIP 1 VIP n Public Network Most Expensive Option, Expensive H/W Configurations SPOF, ADG with MAA required Partitioning Option required Various Security Option required Diagnostic & Tuning Pack required * ADG : Active Data Guard, MAA : Maximum Availability Architecture
- 4. © 2021, Amazon Web Services, Inc. or its Affiliates. You asked for a cost-effective, enterprise database… We designed Amazon Aurora - enterprise database at open source price, delivered as a managed service Speed and availability of high-end commercial databases Simplicity and cost-effectiveness of open source databases Drop-in compatibility with MySQL and PostgreSQL Simple pay as you go pricing Amazon Aurora
- 5. © 2021, Amazon Web Services, Inc. or its Affiliates. Amazon Aurora Customer Adoption Aurora is used by ¾ of the top 100 AWS customers Fastest growing service in AWS history!
- 6. © 2021, Amazon Web Services, Inc. or its Affiliates. © 2021, Amazon Web Services, Inc. or its Affiliates. Amazon Aurora is fast… up to5x the throughput of MySQL; 3x the throughput of PostgreSQL
- 7. © 2021, Amazon Web Services, Inc. or its Affiliates. Aurora - Availability & Scalability (Instance Level) • 99.99% availability with Active-Standby configuration • Up to 15 low latency read reaplicas across 3 AZs • Instance failover typically takes less than 30 seconds • With RDS Proxy, failover times reduced by up to 66% • Auto Scaling dynamically adjusts the number of Read Replicas by connectivity or workload M R R R R R DB Cluster Auto Scaling Policy for Readers DB Subnet Group Subnet AZ1 Subnet AZ2 Subnet AZ3 Virtual Private Cloud RDS Proxy RDS Proxy Endpoint (Writer) Reader DNS Endpoint (Readers)
- 8. © 2021, Amazon Web Services, Inc. or its Affiliates. Aurora - Availability & Scalability (Storage Level) • Highly durable with 6 copies, 2 copies per AZ • Volume grows automatically up to 128TB • Quorum model for writes and reads • 4 out of 6 for writes • 3 out of 6 for reads • Self-healing architecture rebalances hot storage nodes, rebuilds segments from H/W failure • Peer to peer “gossip protocol” for repairs AZ 1 AZ 2 AZ 3 CLUSTER STORAGE VOLUME Amazon S3 Writer Transactions Caching SQL Reader Transactions Caching SQL Reader Transactions Caching SQL
- 9. © 2021, Amazon Web Services, Inc. or its Affiliates. Aurora - Performance • Up to 5x throughput of MySQL CE, 3x throughput of PostgreSQL CE • Fewer I/Os, minimize N/W packets, cache prior results • Parallel Query supports • Aurora storage fleet has thousands of CPUs • Push down and parallelize query processing using the storage fleet • Moving processing close to data reduces network traffic and latency • Query Optimizer produces PQ Plan and creates PQ context based on leaf page discovery • Each storage node runs up to 16 PQ processes, each associated with a parallel query OPTIMIZER EXECUTOR INNODB NETWORK STORAGE DRIVER AGGREGATOR APPLICATION PARTIAL RESULTS STREAM RESULTS IN-FLIGHT DATA PQ CONTEXT PQ PLAN PQ PROCESS PQ PROCESS Up to 16 STORAGE NODE PROCESS PAGE LISTS PQ PROCESS PQ PROCESS Up to 16 STORAGE NODE PROCESS PAGE LISTS PQ PROCESS PQ PROCESS Up to 16 STORAGE NODE PROCESS PAGE LISTS PQ PROCESS PQ PROCESS Up to 16 STORAGE NODE PROCESS PAGE LISTS PQ PROCESS PQ PROCESS Up to 16 STORAGE NODE PROCESS PAGE LISTS PQ PROCESS PQ PROCESS Up to 16 STORAGE NODE PROCESS PAGE LISTS PQ PROCESS PQ PROCESS Up to 16 STORAGE NODE PROCESS PAGE LISTS STORAGE NODES COMPUTE NODE
- 10. © 2021, Amazon Web Services, Inc. or its Affiliates. Aurora - Security Data keys Customer master key(s) Subnet A Subnet B Security Group Read/Write Read-Only AZ 1 AZ 1 • Virtual Private Cloud (VPC) security groups act as a virtual firewall to control inbound and outbound traffic • Identity and Access Management (IAM) provides resource-level role permission controls • Encryption at rest using AWS KMS • Unique data key encrypts customer data • AWS KMS master keys encrypt data keys • SSL protection for data in transit M R
- 11. © 2021, Amazon Web Services, Inc. or its Affiliates. Aurora - Backup and Recovery • Continuous automated backups • Automated snapshots during backup retention period (1 ~ 35 days) • Recover up to last ~5 mins point in time • Able to take manual snapshots • Able to copy snapshots (to other region) • Able to share snapthos with other accounts • Fast database cloning • Backtrack brings database to a point in time without requiring restore from backup
- 12. © 2021, Amazon Web Services, Inc. or its Affiliates. Aurora - Monitoring • Fully managed by RDBMS Service • Built-in comprehensive monitoring • CloudWatch Metrics • CloudWatch Logs • Enhanced Monitoring • Performance Insights • Performance Insights • Easy and powerful dashboard showing load on your database • Uses Average Active Session (AAS) as a load aggregation method over time • Helps you identify source of bottlenecks: top SQL queries, wait statistics, DB engine counters
- 13. © 2021, Amazon Web Services, Inc. or its Affiliates. Schema and Data Migration • Heterogeneous DB migrations predictable by automatically converting source schema with SCT (Schema Conversion Tool) • Migrate DB to AWS with minimal downtime with DMS (Database Migration Service) • Simple to use • On-going replication (CDC : Change Data Capture) • Load table by table • Multiple task simultaneously • Petabyte-scale data transport with on-board storage and compute capability with Snowball
- 14. © 2021, Amazon Web Services, Inc. or its Affiliates. Summary RAC Aurora 인스턴스 가용성 • Active-Active 클러스터로 높은 가용성과 빠른 페일오버 및 확장성을 제공 • 고비용 S/W, H/W 투자가 필요 • 3개의 AZ에 최대 15개의 read-replica를 통한 가용성과 확장성을 제공하며 최대 30초 이내의 페일오버 지원 • Auto-scaling 설정을 통해 커넥션/워크로드에 대해 자동으로 scale-in/out 지원 스토리지 가용성 • Shared Everything Storage • 고성능을 위해 고사양 스토리지가 사용되고 SPOF 구성이라 이를 극복하기 위해 MAA 구성을 위한 추가 투자가 필요 • 3개의 AZ에 각 2개 총 6개의 카피를 통한 내구성을 확보 • Quorum 방식으로 읽기 시 3/6, 쓰기 시 4/6 이면 가능 • Self-healing 아키텍처로 장애에 자동 복구 지원 성능 • 파티셔닝, 병렬처리 등을 통한 고성능 확보 • 추가 옵션 구매 필요 (Partitioning option) • 파티셔닝을 통한 관리성 증대 및 I/O 최소화로 성능 증대 • 스토리지 노드의 CPU를 활용한 병렬 처리 지원하여 대량 데이터 조회 시 성능 증대 보안 • 데이터 암호화, 감사, 접근제어, 마스킹 등 다양한 기능 지원 • 추가 옵션 구매 필요 (ASO option) • VPC, Subnet, Security Group 등을 통한 네트웍 보안 • Data protection in transit with SSL, at rest with KMS 백업 • 전체/증분 백업 지원 및 PITR 복구 지원 • RMAN 같은 built-in 기능보다 3rd party 백업 솔루션 선호 • 보관 주기 동안 자동 백업 및 PITR 지원 • Backtrack으로 restore 없이 원하는 시점으로 복구 지원 모니터링 • 실시간 모니터링 및 다양한 성능 지표 제공 • 추가 옵션 구매 필요 (Diagnostic & Tuning Pack) • CloudWatch 및 Performance Insight를 통한 모니터링 지원 • Enhanced 모니터링을 통한 1초 단위 DB specific 모니터링 지원
- 15. © 2021, Amazon Web Services, Inc. or its Affiliates. Thank you!