「入門Kubernetes」入門 / 20180609 GCPUG Hiroshima #4

GCPUG Hiroshima #4 https://gcpug-hiroshima.connpass.com/event/85416/ で発表した際の資料

「入門Kubernetes」には図が少なく動きがイメージしにくいという欠点を補うべく、Kubernetesのリソースなどの動きを図を使って説明してみました。

Transcript

1. ʮೖ໳Kubernetesʯೖ໳ 2018೥6݄9೔(౔) GCPUG Hiroshima #4 doublemarket
2. দӜ ൏ਓ Twitter : dblmkt GitHub : doublemarket
3. https://yakst.com/ja http://sql-performance-explained.jp https://employment.en-japan.com/engineerhub/entry/2017/06/26/110000
5. ! ධ൑ • Kubernetesॳ৺ऀ޲͚ʹ͓͢͢Ί • جຊ֓೦Λཧղ͢ΔͷʹΑ͍
6. " ධ൑ • ݪจʹؒҧ͍͕ଟ͍ • ຋༁൛ʹ͸Erattaద༻ࡁΈ • मਖ਼ࡁΈίʔυ • https://github.com/doublemarket/kuar-examples-1-9
7. " ධ൑ • ೔ຊޠ൛ͷؒҧ͍ • ਖ਼ޡද • https://github.com/doublemarket/kuar-examples-1-9/ wiki/Errata • ୈ2࡮Ͱ͍͔ͭ͘मਖ਼ࡁΈ
8. " ධ൑ • ਤ͕গͳ͍ ͜ͷࢿྉͰิ׬͠ʹདྷ·ͨ͠ʂ
9. ίϯςφͱ͸ʁ Kubernetesͱ͸ʁ
10. ෺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
11. ίϯςφͷ؅ཧ Web Web Web Web
12. ίϯςφͷ؅ཧ Web Web Web Web DB Web Storage Batch
13. ίϯςφͷ؅ཧ Web Web Web Web DB Web Storage Batch
14. ίϯςφͷ؅ཧ Web Web Web Web DB Web Storage Batch ؅ཧ͕ͭΒ͍
15. Kubernetes • ίϯςφΦʔέετϨʔλ • ίϯςφͷσϓϩΠɺεέʔϧɺ؅ཧͷࣗಈԽͷ࢓૊Έ
16. Kubernetesͷઃܭࢥ૝
17. ΠϛϡʔλϏϦςΟ Πϯετʔϧ ઃఆมߋ ϛϡʔλϒϧͳ΍Γํ
18. ΠϛϡʔλϏϦςΟ Πϯετʔϧ ઃఆมߋ ΞϯΠϯετʔϧ Πϯετʔϧ ઃఆมߋ ϛϡʔλϒϧͳ΍Γํ มߋΛੵΈॏͶΔ
19. ΠϛϡʔλϏϦςΟ Πϯετʔϧ ઃఆมߋ ΞϯΠϯετʔϧ Πϯετʔϧ ઃఆมߋ ΠϯετʔϧࡁΈ Πϝʔδ ϛϡʔλϒϧͳ΍Γํ Πϛϡʔλϒϧͳ΍Γํ มߋΛੵΈॏͶΔ
20. ΠϛϡʔλϏϦςΟ Πϯετʔϧ ઃఆมߋ ΞϯΠϯετʔϧ Πϯετʔϧ ઃఆมߋ ΠϯετʔϧࡁΈ Πϝʔδ ϛϡʔλϒϧͳ΍Γํ Πϛϡʔλϒϧͳ΍Γํ ΠϯετʔϧࡁΈ Πϝʔδ มߋΛੵΈॏͶΔ ৽͘͠࡞Γ௚͢
21. એݴతઃఆ 3.times{ WebαʔόΛىಈ
 } ໋ྩతઃఆ
22. એݴతઃఆ 3.times{ WebαʔόΛىಈ
 } Webαʔό਺ : 3 ໋ྩతઃఆ એݴతઃఆ
23. ࣗݾճ෮γεςϜ Web Pod Node Web Pod Node Web Pod Node 3ͭͷίϯςφΛಈ͔͢
24. ࣗݾճ෮γεςϜ Web Pod Node Web Pod Node Web Pod Node 1୆ϊʔυ͕མͪͨΒ
25. ࣗݾճ෮γεςϜ Web Pod Node Web Pod Node Web Pod Node ৗʹίϯςφ͕3ͭಈ͘Α͏ʹ͸ͨΒ͘
26. ࣗݾճ෮γεςϜ Web Pod Node Web Pod Node Web Pod Node Web Pod Node 4ͭ໨ΛखಈͰ࡞੒ͯ͠΋
27. ࣗݾճ෮γεςϜ Web Pod Node Web Pod Node Web Pod Node Web Pod Node ৗʹίϯςφ͕3ͭಈ͘Α͏ʹ͸ͨΒ͘
28. KubernetesͷϦιʔε
29. Node Node
31. Pod Web ಉظ Node Pod ߋ৽ ഑৴
32. Volume Web ಉظ Node Pod ߋ৽ ഑৴ Volume
33. Podͷઃܭ Word Press DB Node Pod Node Node
34. Podͷઃܭ Word Press DB Node Pod Node Node Word Press DB Pod Word Press DB Pod εέʔϧ͍ͨ͠ͷ͸͜ͷ୯Ґʁ
35. 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͸ͣ…
36. Podͷઃܭ Web ಉظ Node Pod ߋ৽ ഑৴ Volume
37. ಉ͡PodʹೖΕΔ΂͖ίϯςφ • ͓ޓ͍͕ಉҰNode্ʹͳ͍ͱಈ͔ͳ͍ • Ұॹʹεέʔϧ͢Δඞཁ͕͋Δ
38. Label / Annotation Web ಉظ Node Pod ߋ৽ ഑৴
39. Label / Annotation Web ಉظ Node Pod ߋ৽ ഑৴ type=sync type=w eb disk=ssd
40. Service kuard Node Pod kuard Node Pod env=prod ໊લ : alpaca-prod ϥϕϧ : app=alpaca, env=prod Service app=alpaca env=prod app=alpaca
41. 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
42. 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
43. ReplicaSet Node Node Node ϨϓϦΧ : 2 ϥϕϧ : app=kuard ίϯςφ(Pod) : kuard ReplicaSet
44. ReplicaSet kuard Node Pod Node kuard Node Pod app=kuard app=kuard ϨϓϦΧ : 2 ϥϕϧ : app=kuard ίϯςφ(Pod) : kuard ReplicaSet
45. ReplicaSet ɿௐ੔ϧʔϓ kuard Node Pod Node kuard Node Pod ϨϓϦΧ : 4 ϥϕϧ : app=kuard ίϯςφ(Pod) : kuard ReplicaSet app=kuard app=kuard
46. 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
47. 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
48. 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
49. DaemonSet Node Node ίϯςφ(Pod) : fluentd DaemonSet
50. DaemonSet Node Node ίϯςφ(Pod) : fluentd DaemonSet fluentd Pod app=fluentd fluentd Pod app=fluentd
51. DaemonSet Node Node Node ίϯςφ(Pod) : fluentd DaemonSet fluentd Pod app=fluentd fluentd Pod app=fluentd
52. DaemonSet Node Node Node ίϯςφ(Pod) : fluentd DaemonSet fluentd Pod app=fluentd fluentd Pod app=fluentd fluentd Pod app=fluentd
53. DaemonSet : Nodeͷ੍ݶ Node Node Node ϥϕϧ : ssd=true ίϯςφ(Pod) : fluentd DaemonSet ssd=true ssd=true
54. DaemonSet : Nodeͷ੍ݶ Node Node Node ϥϕϧ : ssd=true ίϯςφ(Pod) : fluentd DaemonSet fluentd Pod app=fluentd fluentd Pod app=fluentd ssd=true ssd=true
55. Job : 1ճݶΓ ໊લ : oneshot ίϯςφ(Pod) : kuard completions : 1 parallelism : 1 Job Node
56. Job : 1ճݶΓ ໊લ : oneshot ίϯςφ(Pod) : kuard completions : 1 parallelism : 1 Job Node kuard Pod job=oneshot
57. Job : 1ճݶΓ ໊લ : oneshot ίϯςφ(Pod) : kuard completions : 1 parallelism : 1 Job Node kuard Pod job=oneshot
58. Job : Ұఆ਺੒ޭ͢Δ·Ͱ࣮ߦ Node Node Node Node Node ໊લ : oneshot ίϯςφ(Pod) : kuard completions : 10 parallelism : 5 Job
59. 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
60. 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
61. 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
62. ConfigMap / Secret kuard Node Pod another-param = another-value extra-param = extra-value my-config.txt parameter1 = value1 parameter2 = value2 ConfigMap
63. 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
64. 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
65. 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
66. 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
67. 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
68. 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
69. 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
70. 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
71. 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
72. 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
73. 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
74. 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
75. 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 nginx 1.9.10 Pod
76. StatefulSet Node Node Node StatefulSet ϨϓϦΧ : 1 ϥϕϧ : app=mongo ίϯςφ : mongo:3.4.1
77. StatefulSet Node Node mongo 0 Node Pod ϨϓϦΧ : 1 ϥϕϧ : app=mongo ίϯςφ : mongo:3.4.1 StatefulSet app=m ongo
78. 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
79. 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
80. 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
81. 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
82. ͞Βʹ͓ษڧ͢Δʹ͸
83. ৘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/
84. ৘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)