Envoy externals and ideas (builderscon 2018)

by Yosuke Tomita

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Envoy externals and ideas builderscon 2018 ෌ాཅհ

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© ChatWork ࣗݾ঺հ ▸ ෌ాཅհ (@seikoudoku2000) ▸ “Dev”͔Β”Ops” ΁ (྆ํͷؾ͕࣋ͪ෼͔Δͭ΋Γ) ▸ Navitime (ϩάղੳνʔϜ / ࣾ಺ڞ௨APIͷ։ൃ) ▸ Gengo (όοΫΤϯυ։ൃ / AWS, chef, Postgresql) ▸ ChatWork (ΠϯϑϥϚωδϝϯτ෦ → SRE෦) ▸ ࠷ۙͷςʔϚɿ૊৫ͰγεςϜΛ”͍͍ײ͡”ʹ։ൃɾӡ༻͍ͨ͠

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© ChatWork ౓؊Λൈ͔Εͨ ▸ Microservices ͷ՝୊ʹιϑτ΢ΣΞΛॻ͍ͯਅͬ޲͔Βཱͪ޲͔͏ ▸ ୯ͳΔPoCͰ͸ͳ͘ɺ͕ͬͭΓಋೖ͢Δॴ·Ͱ΍Γ੾Δ ▸ > 100 service / > 10,000 hosts / All service to service trafﬁc ▸ ൃ૝͕ҧ͍͗͢Δ / ΋ͷੌ͍Ϩϕϧࠩ… ▸ e.g. ELB/ALB ࢖ΘͣɺόϥϯαʔΛࣗલͰ࣮૷ʂʁ ▸ ϨϕϧࠩΛײ͡ΕΔΑ͏ʹͳͬͨ…? / ϛυϧ΢ΣΞ։ൃ΁ͷڵຯ

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▸ $MPVE5SFOETCZ"ESJBO$PDLDSPGU ▸ l*U`TTUJMMBQSPCMFNCVUBOFBTJFS QSPCMFNUPTPMWFz ▸ &BTJFSQSPCMFNʹͳΒͳ͍ͳΒߟ͑ͳͯ͘ ྑ͍ ʁ ▸ αʔϏε͕ͲΜͲΜେ͖͘ͳ͍ͬͯ͘ͳΒɺ ͍ͣΕඞཁʹͳΔɺͱ͍͏લఏͰ࿩ΛਐΊ ͍͖ͯ·͢ © ChatWork Microservicesඞཁʁ

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▸ #VJMEJOH.JDSPTFSWJDFT ▸ 1SPEVDUJPO3FBEZ.JDSPTFSWJDFT ▸ #VJMEJOH'BVMU5PMFSBOU.JDSPTFSWJDFT ▸ RJJUB·ͱΊ CZࢲ © ChatWork Microservices࣮૷/ӡ༻ϊ΢ϋ΢

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୭͕ରԠ/୲อ͢Δʁ ֤αʔϏεͷDev͕ػೳ։ൃ ͷεϐʔυΛམͱͯ͠ɺ“໓ଟʹى͖ͳ͍” ͜ͱʹରͯ͠උ͑Δʁ Ops͕શݴޠɺશϥΠϒϥϦͷରԠΛ ߦ͍ɺϝϯς͠ଓ͚Δɺɺɺʁ

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© ChatWork Microservicesͷπϥϛ ▸ ֤ϊ΢ϋ΢ͷ1ͭ1ͭ͸೉͍֓͠೦Ͱ͸ͳ͍͕ɺશͯͷ࣮૷ݴޠ / ϥΠϒϥ ϦͰશͯͷ௨৴ʹڧ੍͠ɺߋ৽͠ଓ͚Δͷ͸૬౰ʹେม ▸ ো֐͕ى͖ͯॳΊͯؾͮ͘͜ͱ͕ଟ͍ ▸ ڥքઢͷ໰୊ ▸ શମͱͯ͠ͷ҆ఆੑ (Ops) ͕ɺ֤αʔϏεͷ࣮૷(Dev)ʹڧ͘ґଘ ▸ Dev͕ػೳ։ൃͷεϐʔυΛ஗Ίͯ·Ͱίετ͔͚ͯରԠʁ ▸ OpsͰશαʔϏε΍ΕͬͯݴΘΕͯ΋ݫ͍͠

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▸ ڞ௨͢ΔपลλεΫΛಠཱͨ͠ίϯϙʔωϯτ ʹू໿͠ɺΞϓϦέʔγϣϯͱซઃͯ͠ಈ͔͢ ▸ Α͋͘ΔྫɿSFWFSTFQSPYZͱͯ͠ͷ/(*/9 ▸ ΞϓϦέʔγϣϯ 1)1 QZUIPOFUD Λ· ͍ͨͰ࢖͑ΔQSPYZػೳΛ/HJOYʹ࣋ͨͤΔ ▸ &OWPZ.JDSPTFSWJDFTӡ༻ʹඞཁͳػೳΛू ΊͨQSPYZ © ChatWork Sidecarύλʔϯ Ұॹʹಈ͘ΞϓϦέʔγϣϯͷ͜ͱ͸ ؾʹ͠ͳͯ͘ྑ͍

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© ChatWork Data Plane ▸ Sidecar proxy = data planeͦͷ΋ͷ ▸ Envoy, NGINX, HAProxyͳͲ (LinkerdͰ͸Controle Plane͕౷߹͞Εͨ) ▸ microservices ͰඞཁͳػೳΛఏڙ ▸ service discovery ▸ health checking ▸ routing (timeout, circuit breaking) ▸ distributed tracing

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© ChatWork Control Plane ▸ εςʔτϨεͳdata planeͷू·ΓΛ෼ࢄγεςϜ΁ͱมԽͤ͞Δଘࡏ ▸ ಈతͳઃఆ৘ใͷఏڙ (e.g. service discovery) ▸ Envoyͷ৔߹͸ɺxDS ͱݺ͹ΕΔAPI͕ఆٛ͞Ε͍ͯΔ (ޙड़) ▸ ਓ͕ؒͦͷ໾ׂΛ͢Δ৔߹΋͋Δ (ਓྗ Controle Plane) ▸ Istio, Nelson, Envoy Manager (Lyft಺੡), cookpad΍booking.com΋ࣗ࡞ ▸ (Linkerd͸Control planeΛ಺แ)

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© ChatWork Envoyͷઃఆ֓ཁ ▸ ੩తͳconﬁgurationͱɺAPIʹΑΔಈతͳconﬁguration ▸ API͸xDS (LDS, RDS, CDS, EDS) ͱݺ͹Ε͍ͯΔ ▸ v1(deprecated) ͔Β v2΁ (ωοτ্ͷ৘ใ͕ࠞࡏɻɻ) ▸ Protcol BufferͰఆٛ͞Εͯͯ໌֬ͩ͠ɺAPIυΩϡϝϯτ΋ॆ࣮͍ͯ͠ Δ͕ɺશମͷ֓೦Λઆ໌ͨ͠υΩϡϝϯτݟ͚ͭΒΕͣɻɻ (͜ΕΛ·ͱΊΔ ͱਓؾऀʹͳΕΔ͔΋͠Εͳ͍)

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© ChatWork Timeout / Retry clusters: - name: service2 connect_timeout: 1s "routes": [ { "cluster": "service2", "preﬁx": "/", "timeout_ms": 3000 "retry_policy" { "retry_on": 5xx, "num_retries": 3 "per_try_timeout_ms": 300, } },

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© ChatWork Fault Injection clusters: - name: service2 connect_timeout: 1s http_filters: - name: envoy.fault config: delay: {fixed_delay: 20s, percent: 50} upstream_cluster: service2 abort: {percent: 20, http_status: 503} upstream_cluster: service2 ଱ো֐ςετɺো֐࠶ݱࢼݧ͕ ༰қʹߦ͑Δʂ

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© ChatWork Envoy͕΋ͨΒ͢΋ͷ ▸ sidecarͱ͍͏৽͍͠ڥքઢ ▸ ௨৴ΛѲΔ͜ͱͰɺmicroservicesʹඞཁͳ༷ʑͳػೳΛ౷Ұతʹఏڙ ▸ Timeout / retry / circuit breaking etc… ▸ Distributed Tracing ▸ Dev ͸serviceͷػೳ։ൃʹ஫ྗ ▸ ͨͩ͠ɺద੾ͳΤϥʔϋϯυϦϯά͸ඞਢʂ ▸ Ops͸sidecarΛ௨ͯ͠Microservicesͱͯ͠ͷ҆ఆੑʹ஫ྗ

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© ChatWork ઌʹEnvoy΍Μͳ͍ͷʁ ▸ ݱঢ়ͷΞϓϦέʔγϣϯΠϯϑϥͷ̎ॏ؅ཧ͕େม ▸ k8sʹ౷Ұͯ͠ӡ༻ίετ࡟ݮ / service meshಋೖίετ࡟ݮ ▸ ͳͥkubernetesʹدͤΔʁ ▸ kubernetes΋։ൃ/ӡ༻Λ”͍͍ײ͡” ʹͯ͘͠ΕΔπʔϧͰ͋Δ ▸ ৄࡉ͸࣍ͷΞδΣϯμʹͯ ▸ Istioͱ͍͏kubernetesͱͷ૬ੑͷ͍͍control plane͕ઈࢍਐԽத

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© ChatWork ΞδΣϯμ ▸ Microservices ͷπϥϛ ͦͷ̍ → Envoy͕ඞཁͱͳΔഎܠ (ࡁ) ▸ Envoyͱ͍͏”ΞΠσΞ” → πϥϛʹର͢ΔEnvoyͷΞϓϩʔν (ࡁ) ▸ ChatWorkͷະདྷ༧૝ਤ → ݱঢ়ͱಋೖ΁ͷΞϓϩʔν (ࡁ) ▸ Microservices ͷπϥϛ ͦͷ̎ → Kubernetes͕ඞཁͱͳΔഎܠ ▸ Kubernetesͱ͍͏”ΞΠσΞ” ▸ ·ͱΊ

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© ChatWork Infrastructure as code ▸ ཧ૝ → શͯίʔυԽ͞Ε͍ͯΔͷͰɺDev / OpsڞʹมߋՄೳ ▸ devops࣮ݱʂ ▸ ݱ࣮ → Infrastructure as codeͷ؅ཧ͕Opsʹूத ▸ Ansible / Chef ౳ͷprovisioning toolͷֶशίετ΍؀ڥߏஙίετ ▸ ϞχλϦϯά / ؂ࢹ / ϩάసૹ౳ɺશମͷӨڹൣғͷ೺Ѳ͕೉͍͠ (஫ɿ͋͘·Ͱࢲͷܦݧ/஌͍ͬͯΔൣғͷ࿩Ͱ͢ʣ

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© ChatWork ڥքઢ͕͍͍ײ͡ʂ ▸ ΞϓϦέʔγϣϯ༻ͷ؀ڥߏங͕׬શʹDevͷकඋൣғʹ ▸ Dockerﬁleͷֶशίετ͸͋Δ͕ɺؾʹ͢Δ͜ͱ͕͙ͬͱগͳ͘ͳͬͨ ▸ Ops͸clusterͷ؅ཧɺmonitoring / loggingసૹ౳ͷڞ௨ج൫ʹूத ▸ 12 factor app ͱ͍͏ΞϓϦέʔγϣϯͷڞ௨ϧʔϧ ▸ pod਺ͷҡ࣋΍ɺϦιʔεঢ়گʹԠͨ͡ίϯςφ഑ஔ͸kubernetes͕ ΍ͬͯ͘ΕΔ

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© ChatWork ࠓ೔࿩ͨ͜͠ͱ ▸ Microservices ͷπϥϛ ͦͷ̍ → Envoy͕ඞཁͱͳΔഎܠ ▸ Envoyͱ͍͏”ΞΠσΞ” → πϥϛʹର͢ΔEnvoyͷΞϓϩʔν ▸ ChatWorkͷະདྷ༧૝ਤ → ݱঢ়ͱಋೖ΁ͷΞϓϩʔν ▸ Microservices ͷπϥϛ ͦͷ̎ → Kubernetes͕ඞཁͱͳΔഎܠ ▸ Kubernetesͱ͍͏”ΞΠσΞ” → πϥϛʹର͢ΔKubernetesͷར఺

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