「入門Kubernetes」入門 / 20180609 GCPUG Hiroshima #4

by doublemarket

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ʮೖ໳Kubernetesʯೖ໳ 2018೥6݄9೔(౔) GCPUG Hiroshima #4 doublemarket

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দӜ ൏ਓ Twitter : dblmkt GitHub : doublemarket

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https://yakst.com/ja http://sql-performance-explained.jp https://employment.en-japan.com/engineerhub/entry/2017/06/26/110000

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! ධ൑ • Kubernetesॳ৺ऀ޲͚ʹ͓͢͢Ί • جຊ֓೦Λཧղ͢ΔͷʹΑ͍

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" ධ൑ • ݪจʹؒҧ͍͕ଟ͍ • ຋༁൛ʹ͸Erattaద༻ࡁΈ • मਖ਼ࡁΈίʔυ • https://github.com/doublemarket/kuar-examples-1-9

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" ධ൑ • ೔ຊޠ൛ͷؒҧ͍ • ਖ਼ޡද • https://github.com/doublemarket/kuar-examples-1-9/ wiki/Errata • ୈ2࡮Ͱ͍͔ͭ͘मਖ਼ࡁΈ

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" ධ൑ • ਤ͕গͳ͍ ͜ͷࢿྉͰิ׬͠ʹདྷ·ͨ͠ʂ

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ίϯςφͱ͸ʁ Kubernetesͱ͸ʁ

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෺ཧϚγϯ͔Βίϯςφ΁ ϋʔυ΢ΣΞ OS ϥΠϒϥϦ ΞϓϦ ΞϓϦ ϋʔυ΢ΣΞ ϋΠύʔόΠβ OS ϥΠϒϥϦ ΞϓϦ ΞϓϦ OS ϥΠϒϥϦ ΞϓϦ ΞϓϦ ϋʔυ΢ΣΞ OS ϥΠϒ ϥϦ ΞϓϦ ΞϓϦ ϥΠϒ ϥϦ ϥΠϒ ϥϦ ΞϓϦ ΞϓϦ ϥΠϒ ϥϦ ίϯςφ࣮ߦ؀ڥ ෺ཧϚγϯ Ծ૝Ϛγϯ ίϯςφ

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ίϯςφͷ؅ཧ Web Web Web Web

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ίϯςφͷ؅ཧ Web Web Web Web DB Web Storage Batch

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ίϯςφͷ؅ཧ Web Web Web Web DB Web Storage Batch

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ίϯςφͷ؅ཧ Web Web Web Web DB Web Storage Batch ؅ཧ͕ͭΒ͍

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Kubernetes • ίϯςφΦʔέετϨʔλ • ίϯςφͷσϓϩΠɺεέʔϧɺ؅ཧͷࣗಈԽͷ࢓૊Έ

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Kubernetesͷઃܭࢥ૝

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ΠϛϡʔλϏϦςΟ Πϯετʔϧ ઃఆมߋ ϛϡʔλϒϧͳ΍Γํ

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ΠϛϡʔλϏϦςΟ Πϯετʔϧ ઃఆมߋ ΞϯΠϯετʔϧ Πϯετʔϧ ઃఆมߋ ϛϡʔλϒϧͳ΍Γํ มߋΛੵΈॏͶΔ

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ΠϛϡʔλϏϦςΟ Πϯετʔϧ ઃఆมߋ ΞϯΠϯετʔϧ Πϯετʔϧ ઃఆมߋ ΠϯετʔϧࡁΈ Πϝʔδ ϛϡʔλϒϧͳ΍Γํ Πϛϡʔλϒϧͳ΍Γํ มߋΛੵΈॏͶΔ

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ΠϛϡʔλϏϦςΟ Πϯετʔϧ ઃఆมߋ ΞϯΠϯετʔϧ Πϯετʔϧ ઃఆมߋ ΠϯετʔϧࡁΈ Πϝʔδ ϛϡʔλϒϧͳ΍Γํ Πϛϡʔλϒϧͳ΍Γํ ΠϯετʔϧࡁΈ Πϝʔδ มߋΛੵΈॏͶΔ ৽͘͠࡞Γ௚͢

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એݴతઃఆ 3.times{ WebαʔόΛىಈ  } ໋ྩతઃఆ

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એݴతઃఆ 3.times{ WebαʔόΛىಈ  } Webαʔό਺ : 3 ໋ྩతઃఆ એݴతઃఆ

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ࣗݾճ෮γεςϜ Web Pod Node Web Pod Node Web Pod Node 3ͭͷίϯςφΛಈ͔͢

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ࣗݾճ෮γεςϜ Web Pod Node Web Pod Node Web Pod Node 1୆ϊʔυ͕མͪͨΒ

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ࣗݾճ෮γεςϜ Web Pod Node Web Pod Node Web Pod Node ৗʹίϯςφ͕3ͭಈ͘Α͏ʹ͸ͨΒ͘

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ࣗݾճ෮γεςϜ Web Pod Node Web Pod Node Web Pod Node Web Pod Node 4ͭ໨ΛखಈͰ࡞੒ͯ͠΋

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ࣗݾճ෮γεςϜ Web Pod Node Web Pod Node Web Pod Node Web Pod Node ৗʹίϯςφ͕3ͭಈ͘Α͏ʹ͸ͨΒ͘

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KubernetesͷϦιʔε

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Node Node

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Pod Web ಉظ Node Pod ߋ৽ ഑৴

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Volume Web ಉظ Node Pod ߋ৽ ഑৴ Volume

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Podͷઃܭ Word Press DB Node Pod Node Node

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Podͷઃܭ Word Press DB Node Pod Node Node Word Press DB Pod Word Press DB Pod εέʔϧ͍ͨ͠ͷ͸͜ͷ୯Ґʁ

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Podͷઃܭ DB Node Pod Node Node Word Press Pod Word Press Pod Word Press Pod Word Press Pod Word Press Pod Word Press Pod DB Pod ࣮ࡍʹ͸͜ͷΑ͏ʹεέʔϧ͢Δ͸ͣ…

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Podͷઃܭ Web ಉظ Node Pod ߋ৽ ഑৴ Volume

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ಉ͡PodʹೖΕΔ΂͖ίϯςφ • ͓ޓ͍͕ಉҰNode্ʹͳ͍ͱಈ͔ͳ͍ • Ұॹʹεέʔϧ͢Δඞཁ͕͋Δ

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Label / Annotation Web ಉظ Node Pod ߋ৽ ഑৴

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Label / Annotation Web ಉظ Node Pod ߋ৽ ഑৴ type=sync type=w eb disk=ssd

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Service kuard Node Pod kuard Node Pod env=prod ໊લ : alpaca-prod ϥϕϧ : app=alpaca, env=prod Service app=alpaca env=prod app=alpaca

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Service kuard Node Pod kuard Node Pod env=prod Service app=alpaca env=prod app=alpaca ΫϥελIP 10.115.245.13 alpaca-prod.default.svc.cluster.local ໊લ : alpaca-prod ϥϕϧ : app=alpaca, env=prod

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ServiceʹNodePortΛઃఆ kuard Node Pod kuard Node Pod env=prod Service app=alpaca env=prod app=alpaca ΫϥελIP 10.115.245.13 alpaca-prod.default.svc.cluster.local ໊લ : alpaca-prod ϥϕϧ : app=alpaca, env=prod NodePort 32711

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ReplicaSet Node Node Node ϨϓϦΧ : 2 ϥϕϧ : app=kuard ίϯςφ(Pod) : kuard ReplicaSet

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ReplicaSet kuard Node Pod Node kuard Node Pod app=kuard app=kuard ϨϓϦΧ : 2 ϥϕϧ : app=kuard ίϯςφ(Pod) : kuard ReplicaSet

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ReplicaSet ɿௐ੔ϧʔϓ kuard Node Pod Node kuard Node Pod ϨϓϦΧ : 4 ϥϕϧ : app=kuard ίϯςφ(Pod) : kuard ReplicaSet app=kuard app=kuard

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ReplicaSet : ௐ੔ϧʔϓ kuard Node Pod kuard Node Pod kuard Node Pod ϨϓϦΧ : 4 ϥϕϧ : app=kuard ίϯςφ(Pod) : kuard ReplicaSet app=kuard app=kuard app=kuard kuard Pod app=kuard

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ReplicaSet : ௐ੔ϧʔϓ kuard Node Pod kuard Node Pod kuard Node Pod app=kuard app=kuard app=kuard kuard Pod app=kuard ϨϓϦΧ : 4 ϥϕϧ : app=kuard ίϯςφ(Pod) : kuard ReplicaSet

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ReplicaSet : ௐ੔ϧʔϓ kuard Node Pod kuard Node Pod kuard Node Pod app=kuard app=kuard app=kuard kuard Pod app=kuard ϨϓϦΧ : 4 ϥϕϧ : app=kuard ίϯςφ(Pod) : kuard ReplicaSet

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DaemonSet Node Node ίϯςφ(Pod) : fluentd DaemonSet

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DaemonSet Node Node ίϯςφ(Pod) : fluentd DaemonSet fluentd Pod app=fluentd fluentd Pod app=fluentd

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DaemonSet Node Node Node ίϯςφ(Pod) : fluentd DaemonSet fluentd Pod app=fluentd fluentd Pod app=fluentd

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DaemonSet Node Node Node ίϯςφ(Pod) : fluentd DaemonSet fluentd Pod app=fluentd fluentd Pod app=fluentd fluentd Pod app=fluentd

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DaemonSet : Nodeͷ੍ݶ Node Node Node ϥϕϧ : ssd=true ίϯςφ(Pod) : fluentd DaemonSet ssd=true ssd=true

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DaemonSet : Nodeͷ੍ݶ Node Node Node ϥϕϧ : ssd=true ίϯςφ(Pod) : fluentd DaemonSet fluentd Pod app=fluentd fluentd Pod app=fluentd ssd=true ssd=true

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Job : 1ճݶΓ ໊લ : oneshot ίϯςφ(Pod) : kuard completions : 1 parallelism : 1 Job Node

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Job : 1ճݶΓ ໊લ : oneshot ίϯςφ(Pod) : kuard completions : 1 parallelism : 1 Job Node kuard Pod job=oneshot

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Job : 1ճݶΓ ໊લ : oneshot ίϯςφ(Pod) : kuard completions : 1 parallelism : 1 Job Node kuard Pod job=oneshot

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Job : Ұఆ਺੒ޭ͢Δ·Ͱ࣮ߦ Node Node Node Node Node ໊લ : oneshot ίϯςφ(Pod) : kuard completions : 10 parallelism : 5 Job

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Job : Ұఆ਺੒ޭ͢Δ·Ͱ࣮ߦ Node kuard Pod job=oneshot Node kuard Pod job=oneshot Node kuard Pod job=oneshot Node kuard Pod job=oneshot Node kuard Pod job=oneshot ໊લ : oneshot ίϯςφ(Pod) : kuard completions : 10 parallelism : 5 Job

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Job : Ұఆ਺੒ޭ͢Δ·Ͱ࣮ߦ Node kuard Pod job=oneshot kuard Pod job=oneshot Node kuard Pod job=oneshot kuard Pod job=oneshot Node kuard Pod job=oneshot kuard Pod job=oneshot Node kuard Pod job=oneshot kuard Pod job=oneshot Node kuard Pod job=oneshot kuard Pod job=oneshot ໊લ : oneshot ίϯςφ(Pod) : kuard completions : 10 parallelism : 5 Job

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Job : Ұఆ਺੒ޭ͢Δ·Ͱ࣮ߦ ໊લ : oneshot ίϯςφ(Pod) : kuard completions : 10 parallelism : 5 Job Node kuard Pod job=oneshot kuard Pod job=oneshot Node kuard Pod job=oneshot kuard Pod job=oneshot Node kuard Pod job=oneshot kuard Pod job=oneshot Node kuard Pod job=oneshot kuard Pod job=oneshot Node kuard Pod job=oneshot kuard Pod job=oneshot

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ConﬁgMap / Secret kuard Node Pod another-param = another-value extra-param = extra-value my-config.txt parameter1 = value1 parameter2 = value2 ConﬁgMap

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ConfigMap / Secret kuard Node Pod another-param = another-value extra-param = extra-value my-config.txt parameter1 = value1 parameter2 = value2 ConfigMap ConfigMap volume ANOTHER_PARAM=another-value EXTRA_PARAM=extra-value /config +- another-param +- extra-param +- my-config.txt +- parameter1 +- parameter2

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Deployment nginx Node Pod Node ϨϓϦΧ : 1 ϥϕϧ : run=nginx ίϯςφ : nginx:1.7.12 ReplicaSet ϨϓϦΧ : 1 ໊લ : nginx ίϯςφ : nginx:1.7.12 Deployment run=nginx

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Deployment ϨϓϦΧ : 2 ໊લ : nginx ίϯςφ : nginx:1.7.12 Deployment ϨϓϦΧ : 1 ϥϕϧ : run=nginx ίϯςφ : nginx:1.7.12 ReplicaSet run=nginx nginx Node Pod Node

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Deployment ϨϓϦΧ : 2 ໊લ : nginx ίϯςφ : nginx:1.7.12 Deployment ϨϓϦΧ : 2 ϥϕϧ : run=nginx ίϯςφ : nginx:1.7.12 ReplicaSet run=nginx nginx Node Pod Node nginx Pod

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Deployment ϨϓϦΧ : 2 ໊લ : nginx ίϯςφ : nginx:1.7.12 Deployment ϨϓϦΧ : 1 ϥϕϧ : run=nginx ίϯςφ : nginx:1.7.12 ReplicaSet run=nginx nginx Node Pod Node nginx Pod

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Deploymentઓུ : Recreate ϨϓϦΧ : 2 ໊લ : nginx ίϯςφ : nginx:1.9.10 Deployment ϨϓϦΧ : 2 ϥϕϧ : run=nginx ίϯςφ : nginx:1.7.12 ReplicaSet run=nginx nginx 1.7.2 Node Pod Node nginx 1.7.2 Pod nginx 1.9.10 Pod nginx 1.9.10 Pod ϨϓϦΧ : 2 ϥϕϧ : run=nginx ίϯςφ : nginx:1.9.10 ReplicaSet run=nginx

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Deploymentઓུ : RollingUpdate ϨϓϦΧ : 2 ໊લ : nginx ίϯςφ : nginx:1.9.10 maxAvailable : 1 Deployment ϨϓϦΧ : 2 ϥϕϧ : run=nginx ίϯςφ : nginx:1.7.12 ReplicaSet run=nginx nginx 1.7.2 Node Pod Node nginx 1.7.2 Pod ϨϓϦΧ : 2 ϥϕϧ : run=nginx ίϯςφ : nginx:1.9.10 ReplicaSet run=nginx nginx 1.9.10 Pod

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StatefulSet Node Node Node StatefulSet ϨϓϦΧ : 1 ϥϕϧ : app=mongo ίϯςφ : mongo:3.4.1

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StatefulSet Node Node mongo 0 Node Pod ϨϓϦΧ : 1 ϥϕϧ : app=mongo ίϯςφ : mongo:3.4.1 StatefulSet app=m ongo

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StatefulSet mongo 1 Node Pod Node mongo 0 Node Pod app=m ongo ϨϓϦΧ : 3 ϥϕϧ : app=mongo ίϯςφ : mongo:3.4.1 StatefulSet app=m ongo

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StatefulSet mongo 1 Node Pod Node mongo 0 Node Pod app=m ongo ϨϓϦΧ : 3 ϥϕϧ : app=mongo ίϯςφ : mongo:3.4.1 StatefulSet app=m ongo mongo 2 Pod app=m ongo

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StatefulSet mongo 1 Node Pod Node mongo 0 Node Pod app=m ongo ϨϓϦΧ : 2 ϥϕϧ : app=mongo ίϯςφ : mongo:3.4.1 StatefulSet app=m ongo mongo 2 Pod app=m ongo

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PersistentVolume mongo 1 Node Pod Node mongo 0 Node Pod app=m ongo ϨϓϦΧ : 3 ϥϕϧ : app=mongo ίϯςφ : mongo:3.4.1 StatefulSet app=m ongo mongo 2 Pod app=m ongo ωοτϫʔΫετϨʔδ PersistentVolume

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͞Βʹ͓ษڧ͢Δʹ͸

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৘ใݯ • ެࣜυΩϡϝϯτ (ӳޠ) https://kubernetes.io/ • ॻ੶ • Kubernetes in Action (ӳޠ) • ϒϩά • Google Cloud (ӳޠ) https://medium.com/google-cloud • ެࣜϒϩά (ӳޠ) https://kubernetes.io/blog/

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৘ใݯ • SlackϫʔΫεϖʔε https://slack.kubernetes.io/ • ೔ຊޠνϟϯωϧ #jp-users, #jp-events • Podcast • Kubernetes Podcast (ӳޠ) https://kubernetespodcast.com/ • ษڧձɾΧϯϑΝϨϯε • Kubernetes Meetup Tokyo (೔ຊޠ) https://k8sjp.connpass.com/ • KubeCon (ӳޠ)