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,VCFSOFUFTͷࣗಈΞοϓάϨʔυʹ͍ͭͯ .BLVBLF-51BSUZ

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!NOVNB@ .BLVBLF *OD 5FBN43& കӍʹෛ͚ͣʹ૸ͬͯ·͢ɻ

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ϚΫΞέʹ͓͚Δ,VCFSOFUFTར༻

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ϚΫΞέͰͷ,VCFSOFUFTӡ༻ ɾϚΠΫϩαʔϏε޲͚࣮ߦ؀ڥͱͯ͠($1(,&؀ڥΛ੔උ ɾ೥݄ࠒ(,&Ϋϥελॳ࡞੒ ɾ೥݄ࠒຊ൪ӡ༻d

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(,& (PPHMF,VCFSOFUFT&OHJOF  ɾ(PPHMFͷ($1ͷϓϩμΫτͷҰͭ ɾ,VCFSOFUFTͷϚωʔδυαʔϏε ,VCFSOFUFT ɾίϯτϩʔϧϓϨʔϯͱϫʔΧʔϊʔυ Ͳͷ΁Μ͕Ϛωʔδυʁ ɾίϯτϩʔϧϓϨʔϯ͸(PPHMF͕؅ཧͯ͘͠ΕΔ ɾϫʔΧϊʔυͷϝϯςϯφε͸ར༻ऀ APP ίϯτϩʔϧϓϨʔϯ ϫʔΧʔϊʔυ ίϯςφ APP Language Runtime Language Runtime OS ΦʔέετϨʔγϣϯΤʔδΣϯτ(kubelet) GKE

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APP ίϯτϩʔϧϓϨʔϯ ϫʔΧʔϊʔυ ίϯςφ APP https://cloud.google.com/kubernetes-engine/docs/concepts/shared-responsibility?hl=ja Language Runtime Language Runtime OS ΦʔέετϨʔγϣϯΤʔδΣϯτ(kubelet) GKE GCP ར༻ऀ ɾج൫ΠϯϑϥετϥΫνϟͷอޢ ɾϊʔυͷΦϖϨʔςΟϯά γεςϜͷڧԽͱύονద༻ ɾΧʔωϧ಺෦ʹίϯςφݻ༗ͷڴҖΛݕग़͢Δ࢓૊Έͷߏஙͱӡ༻ ɾKubernetes ϊʔυ ίϯϙʔωϯτͷڧԽͱύονద༻ ɾίϯτϩʔϧ ϓϨʔϯͷڧԽͱύονద༻ ɾGCP࿈ܞػೳͷఏڙ ɾαϙʔτશൠ ɾίϯςφΞϓϦέʔγϣϯͷ؅ཧ ɾΞϓϦέʔγϣϯϞχλϦϯάɺΞϥʔτΠϯγσϯτରԠ ɾΫϥελ(Kubernetes)ͷΞοϓάϨʔυ ੹೚ڞ༗Ϟσϧ

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,VCFSOFUFTόʔδϣϯΞοϓάϨʔυ

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,VCFSOFUFTͷϦϦʔεαΠΫϧ ɾ,VCFSOFUFTͷϦϦʔεαΠΫϧ͸ϲ݄ʹճ ݱࡏ࠷৽[  ɾ೥݄ࠒ͔Β,VCFSOFUFTϦϦʔε͔Βɺ೥ʹճ ϲ݄ʹճ ΁ͷҠߦΛ໌֬Խ IUUQTHJUIVCDPNLVCFSOFUFTFOIBODFNFOUTUSFFNBTUFSLFQTTJHSFMFBTFSFMFBTFDBEFODF (,&൛ͷϦϦʔεαΠΫϧ ɾ(,&Ͱ͸͜ͷ௥ैͷଞʹ($1ಠࣗػೳόάηΩϡϦςΟͷमਖ਼͕౷߹తʹߦΘΕΔ ɾόʔδϣϯදهHLF YZ[HLFO  ɾYϝδϟʔόʔδϣϯ ɾZϚΠφʔόʔδϣϯ ɾ[ύονόʔδϣϯ ɾHLFO(,&൛όʔδϣϯ ˞,VCFSOFUFT͸ϲ݄αϙʔτɺ(,&Ͱ͸ϚΠφʔόʔδϣϯʹϲ݄ͷαϙʔτ

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όʔδϣϯ௥ै͠ͳ͍Ͱى͜Δ໰୊ ɾαϙʔτ͕͞Εͳ͘ͳΔ ɾ৽ػೳ͕࢖͑ͳ͍ ɾίϯϙʔωϯτόά΍ηΩϡϦςΟΞοϓσʔτ΁ʹ௥ैͰ͖ͳ͘ͳΔ ɾίϯτϩʔϧϓϨʔϯͱϫʔΧʔϊʔυ͕ͭҎ্ϚΠφʔόʔδϣϯ͕཭ΕΔͱαϙʔτ͞Εͳ͘ͳΔ IUUQTLVCFSOFUFTJPKBEPDTTFUVQ@QSJOU

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όʔδϣϯΞοϓάϨʔυΛࣗಈԽ͍ͨ͠

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,VCFSOFUFTΫϥελͷࣗಈΞοϓάϨʔυػೳ ɾ(PPHMF($1ɾɾɾ(,&೥ൃ͔ͳΓॳظ͔ΒରԠ ɾ.JDSPTPGU"[VSF",4ɾɾɾ೥ࠒ͔ΒରԠ ɾ"84&,4ඇରԠ (,&ͷࣗಈΞοϓάϨʔυ ɾίϯτϩʔϧϓϨʔϯɾɾɾࣗಈΞοϓάϨʔυ͞ΕΔ ɾϫʔΧʔϊʔυɾɾɾࣗಈΞοϓάϨʔυΦϓγϣϯΛར༻Մೳ 

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,VCFSOFUFTΫϥελͷࣗಈΞοϓάϨʔυػೳ ɾ(PPHMF($1ɾɾɾ(,&೥ൃ͔ͳΓॳظ͔ΒରԠ ɾ.JDSPTPGU"[VSF",4ɾɾɾ೥ࠒ͔ΒରԠ ɾ"84&,4ඇରԠ (,&ͷࣗಈΞοϓάϨʔυ ɾίϯτϩʔϧϓϨʔϯɾɾɾࣗಈΞοϓάϨʔυ͞ΕΔ ɾϫʔΧʔϊʔυɾɾɾࣗಈΞοϓάϨʔυΦϓγϣϯΛར༻Մೳ  ͳΜʹ΋ߟ͑ͣʹϫʔΧʔϊʔυΛΞοϓάϨʔυ͢Δͱେ఍ͷ৔߹Ұ࣍తͳαʔϏεఀࢭʹͳͬͪΌ͏ɻ (,&ͷࣗಈΞοϓάϨʔυͷػೳΛ࢖͍͑ͯͳ͔ͬͨɻ

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(,&ͷࣗಈΞοϓάϨʔυͷػೳΛ࢖͍͑ͯͳ͔ͬͨ

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(,&ͰΫϥελࣗಈΞοϓάϨʔυ࣮ࢪͰߟྀͨ͠ϙΠϯτ

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ϦϦʔενϟϯωϧͷߪಡ ࣗಈΞοϓάϨʔυΛ࣮ࢪ͢Δ্ͰͲ͏͍͏ߋ৽ස౓Ͱ࣮ࢪ͢Δ͔બ୒ग़དྷΔɻ ɾ3BQJEɾɾɾຖि ৽ػೳॏࢹ  ɾ3FHVMBSɾɾɾϲ݄ʹෳ਺ճ ػೳͱ҆ఆੑόϥϯεܕ  ɾ4UBCMFɾɾɾ਺ϲ݄ʹճ ҆ఆੑॏࢹ  ɾ4UBUJD /P$IBOOFM ɾɾɾࣗಈΞοϓάϨʔυ͠ͳ͍ PRD STG StableΛߪಡͯ͠·͢

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https://cloud.google.com/kubernetes-engine/docs/release-notes?hl=ja ϦϦʔενϟϯωϧͷߪಡ ࣗಈΞοϓάϨʔυΛ࣮ࢪ͢Δ্ͰͲ͏͍͏ߋ৽ස౓Ͱ࣮ࢪ͢Δ͔બ୒ग़དྷΔɻ ɾ3BQJEɾɾɾຖि ৽ػೳॏࢹ  ɾ3FHVMBSɾɾɾϲ݄ʹෳ਺ճ ػೳͱ҆ఆੑόϥϯεܕ  ɾ4UBCMFɾɾɾ਺ϲ݄ʹճ ҆ఆੑॏࢹ  ɾ4UBUJD /P$IBOOFM ɾɾɾࣗಈΞοϓάϨʔυ͠ͳ͍

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αʔδΞοϓάϨʔυ ݹ͍ϊʔυΛୀ໾͢Δલʹ৽͍͠ϊʔυΛىಈ͢Δ͜ͱͰαʔϏεఀࢭͷՄೳੑΛ௿ݮ͢Δػೳɻ αʔδΞοϓάϨʔυ͸೥݄೔͔ΒσϑΥϧτͰ༗ޮɻ

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αʔδΞοϓάϨʔυ ݹ͍ϊʔυΛୀ໾͢Δલʹ৽͍͠ϊʔυΛىಈ͢Δ͜ͱͰαʔϏεఀࢭͷՄೳੑΛ௿ݮ͢Δػೳɻ αʔδΞοϓάϨʔυ͸೥݄೔͔ΒσϑΥϧτͰ༗ޮɻ ϊʔυ ϊʔυ ϊʔυ ϊʔυ ϊʔυ ϊʔυ(ୀ໾) ϊʔυ ϊʔυ ϊʔυ ϊʔυ ৽ϊʔυ௥Ճ

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αʔδΞοϓάϨʔυ ݹ͍ϊʔυΛୀ໾͢Δલʹ৽͍͠ϊʔυΛىಈ͢Δ͜ͱͰαʔϏεఀࢭͷՄೳੑΛ௿ݮ͢Δػೳɻ αʔδΞοϓάϨʔυ͸೥݄೔͔ΒσϑΥϧτͰ༗ޮɻ ϊʔυ ϊʔυ ϊʔυ ϊʔυ ϊʔυ ϊʔυ ϊʔυ ϊʔυ ϊʔυ ৽ϊʔυ ৽ϊʔυ ϊʔυ ϊʔυ(ୀ໾) ৽ϊʔυ௥Ճ

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1PE%JTSVQUJPO#VEHFU 1PEͷ࠷খͷ༗ޮঢ়ଶ΍࠷େͷແޮঢ়ଶͷ਺Λࢦఆ͢Δػೳɻ LVCFDUMESBJO࣮ߦ࣌ʹNBY"WBJMBCMFΛઃఆ͢Δ͜ͱͰ1PEͷىಈ਺Λௐ੔Մೳɻ ϊʔυ ϊʔυ ϊʔυ ϊʔυ ϊʔυ ϊʔυ ϊʔυ ϊʔυ ϊʔυ ৽ϊʔυ ৽ϊʔυ ϊʔυ ϊʔυ(ୀ໾) ৽ϊʔυ௥Ճ

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1PE%JTSVQUJPO#VEHFU 1PEͷ࠷খͷ༗ޮঢ়ଶ΍࠷େͷແޮঢ়ଶͷ਺Λࢦఆ͢Δػೳɻ LVCFDUMESBJO࣮ߦ࣌ʹNBY"WBJMBCMFΛઃఆ͢Δ͜ͱͰ1PEͷىಈ਺Λௐ੔Մೳɻ ɾminAvailable: গͳ͘ͱ΋༗ޮͰ͋Δ΂͖Pod਺ ɾmaxUnavailable: ࠷େແޮͰ͋ͬͯ΋Α͍Pod਺

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1PE%JTSVQUJPO#VEHFU 1PEͷ࠷খͷ༗ޮঢ়ଶ΍࠷େͷແޮঢ়ଶͷ਺Λࢦఆ͢Δػೳɻ LVCFDUMESBJO࣮ߦ࣌ʹNBY"WBJMBCMFΛઃఆ͢Δ͜ͱͰ1PEͷىಈ਺Λௐ੔Մೳɻ ϊʔυ Pod Pod Pod Pod Pod Pod

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1PE%JTSVQUJPO#VEHFU 1PEͷ࠷খͷ༗ޮঢ়ଶ΍࠷େͷແޮঢ়ଶͷ਺Λࢦఆ͢Δػೳɻ LVCFDUMESBJO࣮ߦ࣌ʹNBY"WBJMBCMFΛઃఆ͢Δ͜ͱͰ1PEͷىಈ਺Λௐ੔Մೳɻ ϊʔυ Pod Pod Pod Pod Pod Pod ୀ໾ʂ(evicted)

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1PE%JTSVQUJPO#VEHFU 1PEͷ࠷খͷ༗ޮঢ়ଶ΍࠷େͷແޮঢ়ଶͷ਺Λࢦఆ͢Δػೳɻ LVCFDUMESBJO࣮ߦ࣌ʹNBY"WBJMBCMFΛઃఆ͢Δ͜ͱͰ1PEͷىಈ਺Λௐ੔Մೳɻ ϊʔυ Pod Pod Pod Pod Pod Pod ϊʔυ(ୀ໾) Pod Pod Pod Pod Pod Pod ৽ϊʔυ Pod Pod Pod Pod Pod Pod

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ϊʔυ Pod Pod Pod Pod Pod Pod ϊʔυ(ୀ໾) Pod Pod Pod Pod Pod Pod ৽ϊʔυ Pod maxUnavailable: ࠷େແޮͰ͋ͬͯ΋Α͍ Pod ਺ : 1 ৽ϊʔυ Pod Pod ϊʔυ(ୀ໾) Pod Pod Pod Pod Pod

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ϊʔυ Pod Pod Pod Pod Pod Pod ϊʔυ(ୀ໾) Pod Pod Pod Pod Pod Pod ৽ϊʔυ Pod maxUnavailable: ࠷େແޮͰ͋ͬͯ΋Α͍ Pod ਺ : 1 ➝ ͪ͜ΒΛ࠾༻ͯ͠·͢ ৽ϊʔυ Pod Pod ϊʔυ(ୀ໾) Pod Pod Pod Pod Pod

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$MPVE-PBECBMBODJOH)FBMUIDIFDLT 1PEͷୀ໾࣌ʹద੾ͳλΠϛϯάͰ-#͔ΒͷϦΫΤετ͕ϧʔςΟϯά͞Εͳ͍Α͏ߟྀ͢Δඞཁ͕͋Δ https://cloud.google.com/kubernetes-engine/docs/how-to/ingress-features ɾcheckIntervalSec ϩυόϥϯαʔ͔ΒݟͨPod΁ͷϔϧενΣοΫִؒ σϑΥϧτ͕5ඵ ɾunhealthyThreshold ҟৗͱΈͳ͢ճ਺ σϑΥϧτ͕2 ※beta൛ͷॳظࠒͩͱ͜ͷลΓͷ൓ө͕͏·͍͔͘ͳ͘೰Μͩ

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೥݄ࠒຊ൪ಋೖ ݱࡏͷόʔδϣϯ HLF ͰαʔϏεఀࢭͳ͠ͰͷࣗಈΞοϓάϨʔυ࣮੷Λ࡞Εͨ TUBCMFSFMFBTFBWBJMBCMF TUBCMFSFMFBTFEFGBVMU NBTUFSVQHSBEF OPEFVQHSBEF