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しくじり先生「本番DBでやらかした話」
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osamusuzuki
June 05, 2022
Technology
580
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しくじり先生「本番DBでやらかした話」
本番DBでやらかしたあと、1年後にLTで発表したネタです。
ポストモーテム(事後検証報告)と呼ぶにはあまりにお粗末な資料ですが、なにかの教訓になれば幸いです。
osamusuzuki
June 05, 2022
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Transcript
$-"4ͷຊ൪%#ΛϑϦʔζ͔ͤͯ͞Βɺ͏͙͢ɾɾɾ ͘͠͡Γઌੜ ʮຊ൪%#ͰΒ͔ͨ͠ʯ ླम !4V[VLJ
ʮͳΜͱ͔ͳΔͩΖ͏ɺμϝɻθολΠɻʯ ʮงғؾͰཧղͯ͠Δͱɺ௧͍ʹ͍͋·͢ʯ ʮোൃੜ࣌ͷ෮چखஈ͕େʯ ࠓճ͓͍͑ͨ͜͠ͱ ʁʁʁ
ɹɹླ म / Osamu Suzuki 20204݄᷂ΫϥεʹδϣΠϯ ܈അͷࢁԞ͔ΒϑϧϦϞʔτͰैࣄ ͍··ͰAܕͩͱࢥ͍݂ͬͯͨӷܕ͕ɺઌͷݙ݂ͰOܕ ͩͬͨ͜ͱ͕໌ ຊ൪DBͰͷΒ͔͠ҰपسΛڙཆ͍ͨ͠
ࣗݾհ
΅͘ʮͦ͘σΧ XXX ςʔϒϧͷஅยԽͨ͠ྖҬΛ࠷ద Խ͍ͨ͠ͳʔʯ δϣΠϯ͔Β1ϲ݄΄Ͳܦͬͨ͋Δ
ʮAWS RDS Ͱͷ MySQL ະܦݧ͚ͩͲɺMySQL ͬͨ͜ͱ ͋Δ͠େৎͩΖ͏ʯ ʮϩʔΧϧͱσϞڥͰςετ͔ͨ͠ΒେৎͩΖ͏ʯ ʮΦϯϥΠϯDDL͑ςʔϒϧϩοΫ͠ͳ͍͠தʹͬͯେ ৎͩΖ͏ʯ
ʮ͍͟ͱͳͬͨΒCTO͕ͳΜͱ͔ͯ͘͠ΕΔͩΖ͏ʯ Կͱ͔ͳΔͩΖ͏ͷਫ਼ਆ
γεςϜߏ͓Ζ͔ɺϨϓϦέʔγϣϯ͢Β Α͘Θ͔ͬͯͳ͔ͬͨͷͰɺάάͬͯ֬ೝ ϦʔυϨϓϦΧΒͳ͔ͬͨࢲ
Oܕͷ΅͘ʮԿͱ͔ͳΔͩΖ͏ͷਫ਼ਆͰɺ͍࣮͟ߦʂʯ ͦͯ͠ɾɾɾ
ϨϓϦέʔγϣϯԆͰ90ؒɺཧը໘͕͑ͳ͍ࣄଶʹɾɾɾ ʮԿͱ͔ͳΔͩΖ͏ʯͰ࣮ߦͨ݁͠Ռ ຊ൪DB͕ϑϦʔζ
SlackͰোใࠂॻ
Ͳ͏͢Εࠓճͷো͛ͨͷ͔ ͘͠͡Βͳ͍ͨΊʹ
ಀ͛Δ Ͳ͏͢Εࠓճͷো͛ͨͷ͔ ʁʁʁ
ಀ͛Δ Ͳ͏͢Εࠓճͷো͛ͨͷ͔
೦ͳ΅͘ʮແཧͰ͢Ͱ͖·ͤΜ͝ΊΜͳ͍͞ʯ Ͳ͏͢Εࠓճͷো͛ͨͷ͔
Өڹൣғͷௐࠪ࿙Ε ࣮ࢪதͷγεςϜࢹௐࠪෆ োͷӨڹ͕େ͖͍࣌ؒଳʹ࣮ࢪͨ͠ ࣄલʹϩʔΧϧڥͱ%&.0ڥͰςετ͕ͨ͠ɺϨϓϦέʔγϣϯڥ·Ͱߟྀ͠ͳ ͔ͬͨ ࠶ൃࢭࡦ ςʔϒϧ࠷దԽʹ͔͔࣌ؒΔՄೳੑ͕͋Δ߹ɺӨڹ͠ͳ͍࣌ؒଳʹ࣮ࢪ͢Δ͔ɺϨ ϓϦέʔγϣϯػೳΛఀࢭ͢Δ ຊ൪%#ͷมߋͳͲো࣌ʹӨڹ͕େ͖͍࡞ۀΛ͢Δ߹࡞ۀܭըΛཱͯɺ$50ʹϨ
Ϗϡʔͯ͠Β͏ োใࠂॻʢൈਮʣ
ঢ়گʹԠͨ͡෮چखஈΛ४උ ঢ়گʹԠͨ͡෮چखஈΛ४උ େࣄͳ͜ͱͳͷͰ 2ճݴ͍·ͨ͠
΅͘ʮ·ͨ XXX ςʔϒϧ͕அยԽ͖ͯͨ͠ͳʔʯ ͋Ε͔Β10ϲ݄ɾɾɾ
ಀ͛Δ΅͘ʮΑͬ͠Όɺݟͳ͔ͬͨ͜ͱʹ͠Α͏ɹɹʯ ΑΈ͕͑ΔτϥϚ 🙈
CTOʮςʔϒϧ͕அยԽ͖͔ͯͨ͠Βىථͨ͠ʂʯ CTOʹิ͞Εɺແࣄࢮ
ࣄલʹ࡞ۀܭըॻ࡞͠ɺCTOʹ֬ೝ ঢ়گʹԠͨ͡෮چखஈΛ४උ ෮چ࡞ۀͷϦϋʔαϧΛ࣮ࢪ લճͷࣦഊΛ౿·͑ͯ
ͨ͠΅͘ʮ४උສશɻ҆શ֬ೝɺΑ͠ʂʯ ͍͟ɾɾɾ
ແࣄޭ
ແࣄ…ʁ 🤔
ແࣄྃ ४උ͍ͯͨ͠ো࣌ͷ෮چखஈʹཱͪ·ͨ͠
εέδϡʔϧ΄΅ܭը௨Γ ͓΅Ζ͛ʹු͔Μͩ࣌ؒͰܭը
ʮͳΜͱ͔ͳΔͩΖ͏ɺμϝɻθολΠɻʯ ʮงғؾͰཧղͯ͠Δͱɺ௧͍ʹ͍͋·͢ʯ ʮোൃੜ࣌ͷ෮چखஈ͕େʯ ࠓճ͓͍͑ͨ͜͠ͱ ʁʁʁ
ʮͳΜͱ͔ͳΔͩΖ͏ɺμϝɻθολΠɻʯ ʮงғؾͰཧղͯ͠Δͱɺ௧͍ʹ͍͋·͢ʯ ʮোൃੜ࣌ͷ෮چखஈ͕େʯ ࠓճ͓͍͑ͨ͜͠ͱ
XXXςʔϒϧͱͷઓ͍ଓ͘ɾɾɾ
Զͨͪͷ։ൃ·ͩ࢝·͔ͬͨΓͩʂ To Be Continued. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ ઌੜͷ࣍ճ࡞ʹ͝ظ͍ͩ͘͞ʢʣ