Route 53のSLAだけ100%なんだ

AWSのサービスのうち、Route 53だけがSLA100%になっているのってなんでだろうという疑問から調べてみました。
#r53_osarai

1. #r53_osarai Amazon Rtoute 53Λ΍͓͘͞͠͞Β͍͢Δձ ʮRoute 53ͷSLA͚ͩ100%ͳΜͩʯ
2. ࣗݾ঺հ ◆΋ͭʢࢁຊɹ३തʣ ๭SIerͰΠϯϑϥͱServiceNow→＞ʢݱ৬ʣʹͯSRE
 AWSͱ͔Splunkͱ͔Zabbixͱ͔ॾʑ΍ͬͯ·͢
 ◆झຯ
 Ξ΢τυΞɺࣸਅΛࡱΓʹߦ͘͜ͱ ಈ෺͕શྗͰ૸Δ΍ͭɺόʔνϟϧͳYou Tuber ◆ࠓճొஃͨ͠ཧ༝ Route 53ͬͯSAAͷࢼݧͱ͔Ͱ͸ݟΔ͚Ͳ͋Μ·Γ৮ͬͨ͜ͱͳ͍͠ɺԿ΋Θ͔ΒΜ͜͠ Ε͸͓͞Β͍͍ͨ͠ΑͶͬͯײͯͨ͡ͱ͜Ζʹఱͷ੠͕ฉ͖͑ͯ͜·ͨ͠ɻ
 @ad_motsu ๭ॴʹͯԜΜͰΔ๻
3. Route 53Ͳ͜Ζ͔ωοτϫʔΫʹ͸ૄ͍Ͱ͢ɺຊ౰ʹॳ৺ऀͰ͢ ͓͜ͱΘΓ
4. ◆AWSͷSLAʹ͍ͭͯ͸͔ͬ͠Γॻ͔Ε͍ͯ·͢ͷͰҾ༻ ʮαʔϏεϨϕϧΞάϦʔϝϯτ (SLA) ͸ɺαϓϥΠϠʔ͕ސ٬ʹఏڙ͢Δ͜ͱΛ໿ଋ͢ΔαʔϏεͷϨϕ ϧͷ֓ཁΛنఆ͢ΔɺΞ΢τιʔγϯά͓ΑͼςΫϊϩδʔϕϯμʔͷܖ໿Ͱ͢ɻՔಇ࣌ؒɺ഑৴࣌ؒɺԠ ౴࣌ؒɺղܾ࣌ؒͳͲͷࢦඪͷ֓ཁΛنఆ͠·͢ɻSLA ʹ͸ɺ௥Ճͷαϙʔτ΍ྉׂۚҾͳͲɺཁ͕݅ຬͨ ͞Ε͍ͯͳ͍৔߹ͷҰ࿈ͷରԠ΋ৄड़͞Ε͍ͯ·͢ɻ௨ৗɺSLA ͸ΫϥΠΞϯτͱαʔϏεϓϩόΠμʔͷ ؒͰ߹ҙ͞Ε·͕͢ɺಉ͡ձࣾ಺ͷϏδωεϢχοτಉ࢜Ͱ SLA Λక݁͢Δ͜ͱ΋Ͱ͖·͢ɻʯ
 
 99.9%ͱ͢ΔͱαʔϏε͕ఏڙͰ͖ͳ͍࣌ؒ͸ҎԼͷ௨Γ ɾ1೔Ͱ1෼26.4ඵ
 ɾ1݄Ͱ43෼49.7ඵ
 ɾ1೥Ͱ8࣌ؒ45෼57ඵ https://aws.amazon.com/jp/what-is/service-level-agreement/
 SLAͱ͸ͳΜͧʁ
5. ௒͑ΒΕͳ͍นͷ޲͜͏ʹ AWSͷSLAୡ
 ॾʑͷ৚݅౳͕͋ΓҰ཯ͰͷൺֱͰ͸ͳ͍ͷͰ͕͢ɺ֓Ͷ99%Ҏ্ͱͳ͍ͬͯ·͢ʢ࠷΋௿͍αʔϏεͰ΋99.5%͸͋Γ·͢ʣ
 ͨͩ͠Route 53ʢͱApplication Recovery Controllerʣ͚ͩ100%ʹ౸ୡ͍ͯ͠·͢ɻ
 
 ൺֱ͞ΕͨαʔϏεୡʢhttps://aws.amazon.com/jp/legal/service-level-agreements/ʣ
 ˎS3ͷΑ͏ʹෳ਺͋Δ΋ͷ͸Ұ൪਺஋ͷྑ͍΋ͷΛબൈ
6. ௒͑ΒΕͳ͍นͷ޲͜͏ʹ AWSͷSLAୡ
 ॾʑͷ৚݅౳͕͋ΓҰ཯ͰͷൺֱͰ͸ͳ͍ͷͰ͕͢ɺ֓Ͷ99%Ҏ্ͱͳ͍ͬͯ·͢ʢ࠷΋௿͍αʔϏεͰ΋99.5%͸͋Γ·͢ʣ
 ͨͩ͠Route 53ʢͱApplication Recovery Controllerʣ͚ͩ100%ʹ౸ୡ͍ͯ͠·͢ɻ
 
 ൺֱ͞ΕͨαʔϏεୡʢhttps://aws.amazon.com/jp/legal/service-level-agreements/ʣ
 ˎS3ͷΑ͏ʹෳ਺͋Δ΋ͷ͸Ұ൪਺஋ͷྑ͍΋ͷΛબൈ Amazon Route 53 αʔϏεϨϕϧΞάϦ ʔϝϯτ https://d1.awsstatic.com/legal/AmazonRoute53SLA/Amazon%20Route%2053%20Service%20Level%20Agreement%20-%20Japanese%20(2018-11-21).pdf
 Amazon CloudFront 99.999% Amazon Route 53 Amazon Simple Storage Service (Amazon S3) 99.9% Amazon DynamoDB Amazon Elastic Compute Cloud (Amazon EC2) 99.99% Amazon Relational Database Service (Amazon RDS) 99.95% AWS Lambda 99.5% 100% ͊͊͟͜͟͜ ӽ͑ΒΕͳ͍น
7. ◆ͦ΋ͦ΋Route 53͕100%Λ໨ࢦ͢ཧ༝ ->SLA99.99%ͷαʔϏε͸DNSཔΓͷͨΊ ◆Ұൠతͳো֐ʹ͍ͭͯ Α͘མͪΔͷ͸͜ͷ͋ͨΓ ϗετɺεΠονɺϧʔλʔɺిݯɺPoPɺωοτϫʔΫύε౳ 
 ◆ղܾํ๏
 ੾Γ཭͠Մೳ͔ͭಠཱͨ͠PoPΛར༻͢Δ͜ͱͰ͋Δ
 Point of Presence:άϩʔόϧʹ෼ࢄɾ഑ஔ͞Ε͍ͯΔΤοδϩέʔγϣϯ SLA 100%Λ࣮ݱ͢ΔͨΊʹ
8. ◆σʔλϓϨʔϯ(αʔϏεͷओཁͳػೳΛఏڙ͢Δ΋ͷ)ͷ৑௕Խ ɾDNSϦκϧό͕ͦΕͧΕͷωʔϜαʔόʢNSʣʹରͯ͠࠶࣮ߦΛߦ͏ ɾ֤σʔλϓϨʔϯʢ͜͜Ͱ͸ετϥΠϓʣ͸ͦΕͧΕͷαϒωοτΛ࣋ͪ (CIDR /23)ɺݸʑͰϧʔςΟϯά͞ΕΔ ɾ͜ΕΒͷετϥΠϓͷσϓϩΠ͸ݸʑͰૢ࡞࣮ͯ͠ߦ͞ΕΔ
 
 ->݁Ռͱͯ͠1ͭͷσʔλϓϨʔϯ͕ࣦΘΕͨͱͯ͠΋ӨڹΛ࠷খԽ͢Δ͜ͱ͕ Մೳʹ
 PoPϒϥοΫϗʔϧʢσʔλసૹग़དྷͣʹഁغʣɺϧʔςΟϯάͷ໰୊ɺτϥ ϯδοτ઀ଓϓϩύΠμʹΑΔো֐౳
 SLA 100%Λ࣮ݱ͢ΔͨΊʹ
9. ◆Өڹൣғͷ࠷খԽ ɾ਺͋ΔPoPͷBGP(ܦ࿏੍ޚϓϩτίϧ)͸IP ϓϨϑΟοΫεΛΞυόλΠζ͍ͯ͠Δ ɾϦκϧό͸ͦΕͧΕͷετϥΠϓ͝ͱʹҰ൪͍ۙPoPʹରͯ͠઀ଓΛߦ͏ ɾ͜ͷӨڹൣғΛখ͘͢͞Δ͜ͱͰϨΠςϯγΛ্ঢͤ͞ΒΕΔ ɾPoP͕མͪͨ৔߹͸ଞͷͱ͜Ζ΁ϧʔςΟϯάͤ͞Δ ɾ࠷্ҐυϝΠϯ(.comͱ͔)͝ͱʹετϥΠϓΛ෼ࢄ ◆݁Ռ
 ɾσʔλϓϨʔϯͷো֐Λಛఆͷ஍Ҭ΍ετϥΠϓ͝ͱʹ͢Δ͜ͱ͕Մೳ ɾΫϥΠΞϯτʹΑΔӨڹΛ஍Ҭݶఆʹ཈͑ΒΕΔ ɾετϥΠϓͷσϓϩΠ͕ࣦഊͨ͠ͱͯ͠΋ɺ஍Ҭ΍ετϥΠϓ͝ͱʹݶఆͰ͖Δ ɾϨΠςϯγ͸τϨʔυΦϑʹ SLA 100%Λ࣮ݱ͢ΔͨΊʹ
10. ◆ސ٬ͷ෼཭ ɾޓ͍ʹӨڹΛ๷͙͜ͱ͕ग़དྷΔ ɾϦεΫͱֹۚ͸τϨʔυΦϑ
 ->ϚϧνςφϯταʔϏε͢Δͱ҆͘ͳΔ͕ɺγϯάϧͩͱߴ͍ SLA 100%Λ࣮ݱ͢ΔͨΊʹ ͗Ό͋͋͋ ͏ͪ͸ؔ܎ͳ͍ͷͰ Ϥγο
11. ◆γϟʔυͷਫฏ෼ࢄ
 ɾ୯ҰγϟʔυΛෳ਺ސ٬ʹׂ౰
 ->1͕ͭࢮ͵ͱશ໓
 ɾෳ਺γϟʔυΛސ٬ʹ1ׂͭͣͭ౰ ɹ->ઌఔΑΓ͸Өڹ͕গͳ͍ ɾ1ސ٬ʹෳ਺γϟʔυΛׂ౰ ɹ->1ͭͷγϟʔυ͕ࢮΜͩͱͯ͠΋
 ɹɹͳΜͱ͔ͳΔ ◆݁Ռ ɾߴՄ༻ੑͱސ٬ͷ෼཭Λ௿ίετͰ࣮ݱ ɾ୯Ұސ٬ͷӨڹΛͦ͜Ͱ৯͍ࢭΊΒΕΔ ɾ݁Ռͱͯ͠SLA100%Λຬͨ͢͜ͱ͕ग़དྷΔ SLA 100%Λ࣮ݱ͢ΔͨΊʹ
12. ɾPoPΛ੾Γ཭͠Մೳ͔ͭಠཱʴ৑௕Խͤ͞Δ͜ͱͰɺԿΒ͔ͷো֐͕ ൃੜͨ͠ͱͯ͠΋ݶఆతʹཹΊΔ͜ͱ͕Ͱ͖Δ ɾސ٬ͷ؀ڥΛ෼཭͢Δ͜ͱͰɺো֐ͷר͖ఴ͑Λ๷͙ ɾ̍ͭސ٬ʹରͯ͠ෳ਺ͷγϟʔυΛ౰ͯΔ͜ͱͰଞํͰো֐͕ൃੜ ͨ͠ͱͯ͠΋ҡ͕࣋ग़དྷΔɻ
 SLA 100%͸ҏୡ͡Όͳ͍ ·ͱΊ
13. ɾUnder the Hood of Amazon Route 53 -> re:Invent 2018ʹͯࠓճͷLTͷ಺༰͕ΨοπϦॻ͔Ε͍ͯ·ͨ͠ɻ
 ͜ΕҎ֎Ͱઆ໌͍ͯ͠Δࢿྉ͕ݟ͔ͭΒͳ͔ͬͨͷͰɺ஌ͬͯΔਓ͕͍ͨΒڭ͍͑ͯͩ͘͞ɻ
 
 https://www.slideshare.net/AmazonWebServices/under-the-hood-of-amazon-route-53- arc408r1-aws-reinvent-2018 ࢀߟ