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理山
Uploaded by
理弘 山崎
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JAWS-UG コンテナ支部 #19
転職会議SRE meets EKS
Technology
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JAWS-UG コンテナ支部 #19
1.
స৬ձٞSRE meets EKS స৬ձٞͷӡ༻ͰಘΒΕͨEKSͷݟΛେެ։ JAWS-UGίϯςφࢧ෦
#19 ࣜגձࣾϦϒηϯε స৬ձٞࣄۀ෦ SRE ࢁ㟒 ཧ߂ a.k.a ͔͍ͨͳ͔ (@katainaka0503)
2.
ΞδΣϯμ
3.
ΞδΣϯμ • ࣗݾհ • EKSԽҎલͷస৬ձٞͷECSج൫ͷ՝ •
EKSҠߦΛͲ͏ਐΊ͔ͨ • స৬ձٞͷEKSج൫ • ECS/EKSͷϝϦσϝ • ·ͱΊ
4.
ࣗݾհ
5.
ࣗݾհ • ࢁ㟒ཧ߂ a.k.a
͔͍ͨͳ͔ • @katainaka0503 (Twitter, GitHub) • ࣜגձࣾϦϒηϯε స৬ձٞࣄۀ෦ SREνʔϜ
6.
స৬ձٞ ຊ࠷େڃͷస৬ใαΠτ ࣄ୳͠ʹ͓͚ΔใͷඇରশੑΛͳ͘͠ɺస৬ʹ͓͚ΔϛεϚονΛղফ͢Δ͜ͱͰ ΑΓଟ͘ͷਓ͕ೲಘͰ͖Δస৬Λ࣮͖ͰݱΔΑ͏ͳαΠτΛࢦ͍ͯ͠·͢ɻ స৬ձٞͰɺͳʹؾΔձࣾͷޱίϛใΛݟΔ͜ͱͪΖΜɺٻਓۀاͷԠืՄೳͰ͢ɻ
7.
EKSԽҎલͷస৬ձٞͷECSج൫ͷ՝
8.
EKSԽҎલͷస৬ձٞͷECSج൫ͷ՝ • SRE͕͍ͳ͍ͱ৽͍͠αʔϏεΛσϓϩΠͰ͖ͳ͍ • ECSͷσϓϩΠπʔϧ͕ಠࣗ •
ECSɾEC2ɾLambdaͰ࡞ΒΕͨγεςϜ͕ࠞࡏ • ΫϨσϯγϟϧͷѻ͍ํ͕ηΩϡϦςΟ্͕͋Δ • ʑ
9.
EKSҠߦΛͲ͏ਐΊ͔ͨ
10.
ํ • ϚΠΫϩαʔϏε͝ͱʹॱ࣍ECS͔ΒEKSʹΓସ͑Δ • ᘳͳΫϥελΛ͍͖ͳΓ࡞ΔͷͰͳ͘ɺ ϑΣʔζΛͬͯॱ൪ʹΫϥελͷΛߴΊ͍ͯ͘ •
։ൃऀͷࣝҠసΛ࠷ॏࢹ͢Δ
11.
ϚΠΫϩαʔϏε͝ͱͷΓସ͑ • ϚΠΫϩαʔϏε͝ͱʹΓସ͑Δ͜ͱͰোܘΛ࠷খԽ • ALB
+ ECSΛࢦ͍ͯ͠ΔRoute53ͷϨίʔυΛ ExternalDNSԼʹҠ͠Route53ͰΓସ͑ • Γ͠Route53ϨίʔυΛͱʹ͢
13.
ϑΣʔζΛ͚ͯਐతʹ͢͢ΊΔ • EKSҠߦ࡞ۀͷશମ૾Λఆٛ͠ɺ ϑΣʔζΛ͚ͯண࣮ʹਐΊΔ • KubernetesΤίγεςϜͷେͳબࢶʹѹ͞Ε Ҡߦ͕ਐ·ͳ͘ͳΔ͜ͱΛ͙ •
ϑΣʔζ͝ͱʹ࠷ݶຬ͍ͨͯ͠Δ͖ঢ়ଶΛҙࣝ͠ͳ͕Β ண࣮ʹEKSج൫ߏஙΛਐΊͨ
15.
։ൃऀͷࣝҠస • ΞϓϦέʔγϣϯ։ൃऀΛରʹͨ͠ษڧձΛ։࠵ • ࿅शΛଟΊʹ࣮͠ࡍʹखΛಈ͔ͯ͠Β͑ΔΑ͏ʹ •
ϞϒϓϩάϥϛϯάͰࣜܗSREࢦಋͷݩɺ ࣮ࡍʹ։ൃ͍ͯ͠ΔϚΠΫϩαʔϏεΛEKSԽ • ษڧձͰͷࣝΛ࣮ࡍͷۀͱଓ͢Δ
16.
స৬ձٞͷEKSج൫
17.
CI/CD
18.
CI/CD • FluxΛ࠾༻ • GitOpsʹΑΔCI/CDΛ࣮ݱ •
KubernetesϦϙδτϦͷઃఆ༰ΛGitHubͱಉظ • ৽͍͠ΠϝʔδΛσϓϩΠͨ͠ΒGitHubʹΠϝʔδΛॻ͖͢ • νϟοτϘοτͱ࿈ͨ͠ܞϒϥϯνσϓϩΠͷඋ
19.
CI/CD • ৽͍͠ΠϝʔδͷλάͰεςʔδϯάΛࣗಈͰߋ৽ • ಛఆͷϒϥϯν͔Β࡞ΒΕͨΠϝʔδΛ ChatOpsͰεςʔδϯάʹσϓϩΠ •
ຊ൪ʹChatOpsͰ৽͍͠ΠϝʔδΛσϓϩΠ
21.
ิ: ͳͥFluxΛબΜ͔ͩ • ʮYAMLͷߋ৽ʯͱʮ৽͍͠ΠϝʔδͷσϓϩΠʯͷ ̎ͭͷϢʔεέʔεͷ྆ํʹରԠͰ͖ΔͨΊ •
৽͍͠ΠϝʔδͷσϓϩΠʹ͍ڧπʔϧ͕͋·Γͳͦ͞͏ͩͬͨ • fluxctlΛ͏ͱಛఆϒϥϯνͷΠϝʔδΛΞυϗοΫʹσϓϩΠ͢Δ͜ͱʹରԠͰ͖Δ • ݸਓతʹɺࠓ͔ΒΈ͢ͳΒArgoCDʹArgoCD Image Updater͕͋ͬͨΓɺ PipeCD༗ͦ͏ͳͨΊFluxબͳ͍͔ • ҆ఆͨ͠GUI͕͋Δͷ ։ൃऀʹৗతʹKubernetesΫϥελΛ৮ͬͯΒ͏্Ͱັྗత
22.
ࢹɾϩά
23.
ࢹ • DatadogͰࢹ • DeploymentCronJobͷঢ়ଶΛࢹ •
AWS Load Balancer ControllerɺΧελϜγεςϜίϯϙʔ ωϯτϝτϦΫεΛࢹ • յΕͨઃఆΛσϓϩΠͨ͠ΒଈΞϥʔτ
26.
ϩά • Grafana LokiΛ༻ •
S3Λσʔλอଘઌʹ͢Δ • CloudWatch LogsDatadog Logsʹൺͯஈ͕͍҆ • Podͷϝλσʔλ(ϥϕϧ)͔Βϩάʹϝλσʔλ༩
29.
ࣗಈεέʔϦϯά
30.
ࣗಈεέʔϦϯά • Cluster AutoscalerͰϊʔυΛࣗಈͰ૿ݮ •
Horizontal Pod AutoscalerͰPodΛࣗಈͰ૿ݮ
31.
ͦͷଞ
32.
ͦͷଞ • ΫϨσϯγϟϧཧ: SealedSecret •
SealedSecretͷ伴ͷόοΫΞοϓ: Velero • ConfigMap, SealedSecretߋ৽࣌ͷrestart: Reloader • όονॲཧ: Argo Workflow • AWSͷϦιʔεཧ: External DNS, AWS Load Balancer Controller
33.
ECS/EKSϝϦσϝ
34.
EKSͰECSͰͰͰ͖Δ͜ͱ
35.
ECSͰEKSͰͰ͖Δ͜ͱ • ίϯςφΦʔέετϨʔγϣϯʹඞཁͳػೳͷ΄ͱΜͲ • Fargateͷར༻ •
ίϯςφʹೖͬͯσόοά • ECS Exec • αʔϏεϝογϡͷར༻
36.
EKSͷϝϦοτ
37.
EKSͷϝϦοτ • γϯϓϧͳίϯϙʔωϯτΛΈ߹Θͤͯج൫Λθϩ͔Β࡞Δͷʹ͘ • ʢ࣭ͷߴ͍ج൫͕࡞ΕΕʣ ΞϓϦέʔγϣϯ։ൃऀཱ͕ࣗͯ͠৽αʔϏεͷσϓϩΠʹऔΓΊΔ •
ͨͩ͠ɺΈ߹ΘͤΔίϯϙʔωϯτ͕૿͑Δͨͼ ࢹΞοϓάϨʔυͷର͕૿͑Δ͜ͱҙ͖ࣝ͢ • KubernetesΤίγεςϜͷࢿ࢈Λར༻Մೳ • GitOpsͷ࣮ݱͷ༰қ͞
38.
స৬ձٞͰڗड͍ͯ͠ΔϝϦοτͷྫ • ։ൃऀϑϨϯυϦʔͳUXͷπʔϧͷͨΊɺ ࣝҠసΛ͔ͬ͠Γߦ͑ΞϓϦέʔγϣϯ։ൃऀ͕ࣗతʹಈ͖͍͢ • ArgoΛ༻ͯ͠όονॲཧؒͷґଘؔΛཧ͢Δ࡞ ͕ۀ ΞϓϦέʔγϣϯ։ൃऀओಋͰਐߦத •
GitOpsʹΑΔӡ༻ίετͷݮ • PRҰൃͰϝϯςφϯεϞʔυʹ
39.
ECSͷϝϦοτ
40.
ECSͷϝϦοτ • ඞཁेͳίϯςφج൫Λ͔ΜͨΜʹߏஙͰ͖Δ • CopilotͷศརͳσϓϩΠπʔϧ͕͋Δ •
ΞοϓάϨʔυ͕ࣗಈ • Ϋϥελࣗମແྉ
41.
EKSͰؾΛ͚ͭΔ͜ͱ
42.
PodΛ҆શʹऴྃ͢Δ • ΞϓϦέʔγϣϯΛSIGTERMड৴࣌ʹऴྃ͢ΔΑ͏ʹ࣮ (ECSͰΔ͖) • τϥϑΟοΫΛड͚͚ΔPodͷpreStopϑοΫͰsleep͢Δ •
Service͔ΒͷΤϯυϙΠϯτͷআ֎ͱPodͷऴྃॲཧඇಉͰظਐ ΉͨΊɺService͔ΒͷΤϯυϙΠϯτͷআ֎͕࣮֬ʹऴΘ͔ͬͯΒ PodͷऴྃॲཧΛ͢͢ΊΔ
43.
STSͷϦʔδϣφϧΤϯυϙΠϯτΛ͏ • EKSͷIAM Role
for Service AccountsͰ IAMͷݶݖΛಘΔͨΊʹk8sͷID TokenΛ AWSͷҰ࣌ΫϨσϯγϟϧʹҾ͖͍ͯ͑Δ (STS:AssumeRoleWithWebIdentity) • https://b.hatena.ne.jp/entry/s/ katainaka0503.hatenablog.com/entry/2019/12/07/091737
44.
STSͷϦʔδϣφϧΤϯυϙΠϯτΛ͏ • STS͕ϦʔδϣφϧΤϯυϙΠϯτΛ༻͍ͯ͠ͳ͍ͱ τʔΫϯͷߋ৽࣌ʹϨΠςϯγ͕ ૿ٸ
45.
STSͷϦʔδϣφϧΤϯυϙΠϯτΛ͏ • Pod͔ΒAWS SDKΛ͏߹ɺ STSͷϦʔδϣφϧΤϯυϙΠϯτΛ͏ઃఆΛೖΕΔ͜ͱ •
`AWS_STS_REGIONAL_ENDPOINTS=regional` • SDKʹΑͬͯσϑΥϧτͰ ϦʔδϣφϧΤϯυϙΠϯτʹଓ
46.
γεςϜίϯϙʔωϯτͷࢹ • AWS Load
Balancer ControllerExternalDNS ઃఆແ͠ͰͨͬޡઃఆʹΑΔॲཧͷࣦഊͷࢹΛߦ͑ͳ͍ • ʮYAMLΛमਖ਼ͨ͠ͷͷຊ൪ʹڥΤϥʔͰద༻͞Ε͍ͯͳ͔ͬͨʂʯ ͱ͍͏έʔε͕ൃੜ͢ΔՄೳੑ • AWS Load Balancer Controllerͷ߹ɺ KubernetesʹIngress͓Αͼannotationͱͯ͠ઃఆΛొ => ίϯτϩʔϥ͕ղऍ ͯ͠ALBͷઃఆΛมߋͱ͍͏ྲྀΕͳͷͰɺ ొ࣌ʹෆਖ਼ͳ͕͔Εʹ͍͘͜ͱʹ
47.
γεςϜίϯϙʔωϯτͷࢹ • γεςϜίϯϙʔωϯτͷPrometheusΤϯυϙΠϯτ͔Β ϝτϦΫεΛऔಘ͠ɺΤϥʔൃੜ࣌ʹ௨͕ඈͿΑ͏ʹ • Datadogͷ߹
Autodiscoveryͱ͍͏ػೳ͕͑ΔͷͰγες ϜίϯϙʔωϯτͷPodʹΞϊςʔγϣϯΛ͚Δ͚ͩͰϝτ ϦΫε͕औಘͰ͖Δ
48.
·ͱΊ
49.
·ͱΊ • EKSΫϥελΛߏங͢Δͷʹ࿑ྗ͕͔͔Δ͕ɺ Γ͖ͬͨͱ͖ͷϝϦοτେ͖͍ • γεςϜͷੑ࣭։ൃ৫ͷঢ়͔گΒECS͔EKS͔Λஅ͢Δ •
EKSԽΑΓઌʹࢄτϨʔγϯά “͋ͨΓ·͑” Λ͑Δ ͱ͍͏ઓུݸਓతʹΞϦ
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