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障害対応とその防止策

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障害対応とその防止策

  1. 1. OGATA Tetsuji (@xtetsuji) 2017/09/26 Night! https://flic.kr/p/4qVuuT
  2. 2. • OGATA Tetsuji (@xtetsuji) • http://post.tetsuji.jp/ • Gaiax R&D INFRA
  3. 3. • 1: 2003/5/25 ~ 2014/1/31 • 10years 8months 6 • 2: 2014/2/1 ~ 2014/12/12 • 10months 11 • 3: 2015/6/10 ~ Now! • Gaiax R&D INFRA
  4. 4. 3 Gaiax
  5. 5. • (3) 2 • • • (1) …
  6. 6. UPS
  7. 7. • UPS • UPS • •
  8. 8. • 10 UPS • 1 UPS • UPS
  9. 9. Philippines Manila
  10. 10. • • • •
  11. 11. • UPS 10 2 • UPS
  12. 12. shutdown
  13. 13. • • shutdown -h now
  14. 14. • screen • …
  15. 15. https://flic.kr/p/pEWrRs
  16. 16. • • (PS1 h)
  17. 17. • shutdown reboot • e.g. /usr/sbin/shutdown -h now
 shutdown -h now
  18. 18. • • 15 • 15 • …
  19. 19. • • GitHub
  20. 20. RAID https://flic.kr/p/h4t21
  21. 21. • RAID • 1 • p HDD 3 RAID5 1 HDD 3p2 • p<<1 3p2<<p
  22. 22. • RAID RAID1 RAID5 • RAID1 • n 2 n-1 • RAID5 • n (n>=3) 1
  23. 23. • • •
  24. 24. • RAID5 2 • HDD RAID5 • • http://post.tetsuji.jp/2015/03/prohibition-raid-with- same-lot-hdd/ RAID HDD
  25. 25. HDD • Gaiax RAID1 2 • HDD • RAID •
  26. 26. RAID • Gaiax 3 RAID • Adaptec / 3ware / HightPoint • RAID1
  27. 27. • HDD 0 1 • RAID1 RAID • HDD RAID1
  28. 28. https://flic.kr/p/pbJ5BJ
  29. 29. • • Gaiax AWS •
  30. 30. • • Gaiax • •
  31. 31. • • S3 99.999999999% • EBS AWS S3
  32. 32. • • • •

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