Kubernetesを使うことによるメリットと注意点

by jogannaoki

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,VCFSOFUFTΛ࢖͏͜ͱ ʹΑΔϝϦοτͱ஫ҙ఺ "84ࣄۀຊ෦ίϯαϧςΟϯά෦৓؛௚ر

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ࠓ೔࿩͢͜ͱ w ,VCFSOFUFTͱ͸ʢͬ͘͟Γ w ,VCFSOFUFTΛ࢖͏͜ͱʹΑΔϝϦοτ w ,VCFSOFUFTͷ஫ҙ఺

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,VCFSOFUFTͱ͸

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,VCFSOFUFTͱ͸ w ίϯςφԽ͞ΕͨΞϓϦέʔγϣϯΛಈ͔ͨ͢ ΊͷϓϥοτϑΥʔϜ w σϓϩΠɺεέʔϦϯάͳͲΛࣗಈԽ w ίϯςφΦʔέετϨʔγϣϯπʔϧͷσϑΝ Ϋτ

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Nodes Master Kubernetes Cluster ,VCFSOFUFTͷΠϯϑϥߏ੒

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Nodes Master ,VCFSOFUFTͷΠϯϑϥߏ੒ ɾk8sΫϥελΛ؅ཧ͢ΔͨΊͷ ίϯϙʔωϯτ܈ ɾk8s؅ཧ༻ͷΤϯυϙΠϯτͳͲ Kubernetes Cluster

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Master ,VCFSOFUFTͷΠϯϑϥߏ੒ ɾίϯςφͷ࣮ߦ؀ڥ Nodes Kubernetes Cluster

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,VCFSOFUFTͷجຊૢ࡞ Nginxίϯςφ࡞੒͍ͨ͠ͳʔ LTͷΦϒδΣΫτΛఆٛͨ͠ϚχϡϑΣετϑΝΠϧΛ࡞੒ $-*πʔϧʢLVCFDUMʣͳͲΛར༻͠Ϋϥελʹର͠σϓϩΠࢦࣔ $ kubectl apply -f pod.yaml Master

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ͬ͘͟Γݴ͏ͱ LTΫϥελ͕͋Δલఏ

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:".-Λॻ͘

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Master σϓϩΠࢦࣔ $ kubectl apply -f pod.yaml

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/PEFʹίϯςφ͕഑ஔ͞ΕΔ Nodes Master Nginxίϯςφσϓϩͯ͠ʔ Γΐ͏͔͍

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,VCFSOFUFTΛ ࢖͏͜ͱʹΑΔϝϦοτ

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*OGSBTUSVDUVSFBT$PEF ʹΑΔߏ੒؅ཧ

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Nodes Master Ϋϥελ಺ͷϦιʔε͸:".-Ͱ ؅ཧ YAML k8sͷΦϒδΣΫτΛYAMLͰఆ ٛͰ͖Δ ผΫϥελͰಉ࣮͡ߦ؀ڥΛߏங ͢Δͷ΋༰қ

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ΤίγεςϜͷ޿͕Γͱ࿈ܞ

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ͲΜͲΜग़ͯ͘ΔLTͷΤίγεςϜ

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ύοέʔδϚωʔδϟ

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w ΞϓϦέʔγϣϯΛՄಈͤ͞ΔͨΊͷߏ੒ϑΝ ΠϧΛ·ͱΊͯσϓϩΠ͢Δπʔϧ w ༷ʑͳΞϓϦέʔγϣϯͷςϯϓϨʔτ͕ެ։ ͞Ε͍ͯΔ

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$%πʔϧ

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w ϚϧνΫϥ΢υ؀ڥ΁ͷܧଓతσϦόϦʔπʔϧ w ΧφϦΞϦϦʔεͳͲߴ౓ͳσϓϩΠΛ࣮ݱ͢Δ ͜ͱ΋Մೳ

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w (JU0QTΛ࣮ݱ͢ΔͨΊͷπʔϧ w Ϋϥελͷதʹ"SHP$%ͷίϯϙʔωϯτΛσ ϓϩΠ͠(JU)VC্ͷϚχϡϑΣετͱಉظ w 6*͕៉ྷ

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؂ࢹɺϚΠΫϩαʔϏεɺ ηΩϡϦςΟɺɺɺ

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ڊਓͷݞʹ৐ΕΔ

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,VCFSOFUFTͷ஫ҙ఺

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ӡ༻ʹ͓͍ͯ

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ΫϥελΞοϓσʔτ΁ͷ௥ै w ,VCFSOFUFT &,4 ͸ϲ݄ʹճΞοϓσʔτ w αϙʔτ͞ΕΔόʔδϣϯ͸࠷৽͔Βόʔδϣ ϯ·Ͱ w Ξοϓσʔτʹ௥ै͍ͯ͘͠ඞཁ͕͋Δ

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໰୊͕ൃੜͨ࣌͠ͷରԠ w ໰୊ൃੜ࣌ʹରԠͰ͖ΔΤϯδχΞ͕ඞཁ w ֤ΦϒδΣΫτͷؔ܎ͳͲ΋ཧղ͢Δඞཁ͕͋ ΔͨΊӡ༻୲౰ऀʹؙ౤͛͸͓ͦΒ͘ແཧ w ΫϥελߏஙʹܞΘͬͨਓ͕Ϋϥελͷ໘౗Λ ݟ͍ͯ͘ͷ͕ྑ͍ʢ43&ͳͲʣ

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·ͱΊ w ,VCFSOFUFT͸ίϯςφ࣮ߦ؀ڥʢ*B$ʣ w ΤίγεςϜ͕ॆ࣮͍ͯ͠Δ w LTͷӡ༻·Ͱߟ͑ͯͷ࠾༻Λݕ౼͢Δ

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͓·͚

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͋Εʁ"84Ͱߏங͢ΔͷͰ͋Ε͹ &$4ʢ'BSHBUFʣͰ͍͍Μ͡ΌͶʁ

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ͨͿΜɺଟ͘ͷ৔߹'BSHBUFΛ ࢖ͬͨํ͕޾ͤʹͳΕΔͱࢥ͏ ͚ͲɺLT͸ָ͍ͧ͠ʂʂ