KubernetesHandson

Transcript

1. Kubernetes ϋϯζΦϯ
2. ࣗݾ঺հ • ͓͍͋(@_a0i) • αΠϘ΢ζגࣜձࣾSRE •
3. Kubernetesͱ͸
4. …ͷલʹ
5. ίϯςφΛຊ൪Ͱ ࢖͏ͱ͖ʹ Ͳ͏͍͏͜ͱ͕ඞཁʁ
6. ίϯςφΛຊ൪ӡ༻͢Δࡍ ΍Γͨ͘ͳΔͩΖ͏͜ͱ ɾෳ਺ίϯςφΛಉ࣌ʹ্ཱ͍ͪ͛ͨ ɾίϯςφΛ৑௕Խ͍ͨ͠ ɾωοτϫʔΫΛ্ख͍͜ͱ΍Γ͍ͨ ͳͲͳͲ
7. ͜ΕΒΛ KubernetesͰ ղܾʂ
8. Kubernetesͱ͸ • ίϯςφΦʔέετϨʔγϣϯπʔϧ • ଞʹ΋Docker Compose΍Docker Swarm • ෳ਺ίϯςφΛຊ൪ӡ༻͢ΔͨΊʹཉ͍͠ɺ ඞཁͳػೳΛ৭ʑऔΓἧ͍͑ͯΔ
9. Kubernetesͷಛ௃
10. Kubernetesͷಛ௃ • એݴܕͰ͋Δ • ࣗݾճ෮ੑ • ImmutableͰ͋Δ
11. એݴܕͰ͋Δ
12. એݴܕͰ͋Δɺͱ͸ • એݴܕ⁶खଓ͖ܕ • ঢ়ଶΛʮએݴʯ͢Δ • Kubernetes͸એݴ͞Εͨঢ়ଶʹۙ͘Α͏ಈ͘ ʢReconcile)
13. એݴܕͱ͸
14. ࣗݾճ෮ੑ
15. Kubernetesͷࣗݾճ෮ੑ • એݴܕͰ͋Δɺ͜ͱͷ݁ՌͰ΋͋Δ • ๬Ήঢ়ଶΛએݴ͓ͯ͘͠ͱɺ్தͰো֐͕ى͖ ͯ΋ԿΛ͢Ε͹͍͍͔͸Kubernetes͕উखʹ ൑அ͢Δ • खଓ͖ܕ͸A→B→Cͷ్தͰো֐͕ى͖ͨΒ ࠶։͢Δͱ͜Ζ͔Βࢦࣔ͠ͳ͚Ε͹͍͚ͳ͍
16. DeploymentͰ࡞੒ͨ͠PodΛফ͢
17. Immutable
18. ैདྷͷΠϯϑϥ • αʔόʔΛ্ཱͪ͛ɺ౎౓ιϑτ΢ΣΞΛΞο ϓσʔτ͢Δӡ༻ͩͬͨ • ৭ʑͳਓ͕ӡ༻ʹؔΘΓɺஈʑԿ͕Ͳ͏ͳͬ ͍ͯΔ͔Θ͔Βͳ͘ͳ͍ͬͯ͘
19. ImmutableͳγεςϜ • ຖճ৽͘͠αʔόʔΛ࡞Δ • ৽نίϯςφΠϝʔδΛݩʹίϯςφΛ࡞ Γ௚͢
20. Kubernetesͷ ΞʔΩςΫνϟʔ
21. ਤࢀরɿIUUQTCMPHIFQUJPDPNDPSFLVCFSOFUFTKB[[JNQSPWPWFSPSDIFTUSBUJPOBFBDB
22. Ϧιʔεͷઆ໌
23. Kubernetesͷ୅දతϦιʔε • Node • Pod • Deployment • Service
24. Node • ίϯςφΛσϓϩΠ͢Δαʔόʔ • ෺ཧɺԾ૝໰Θͳ͍
25. Pod • KubernetesͰσϓϩΠ͢Δ୯Ґ • Ϋδϥͷ܈ΕΛPodͱ͍͏ • Podʹ͸ෳ਺ίϯςφ৐ͤΔ͜ͱ͕Ͱ͖Δ
26. Deployment • ࢦఆͨ͠Podͷ਺Λҡ࣋͠ଓ͚ΔͨΊͷ ReplicaSetΛ؅ཧ͢Δ • ReplicaSetΛ࡞੒͢Δ͜ͱ΋Ͱ͖Δ͕ɺجຊ DeploymentΛར༻͢Δ • ϩʔϧόοΫ΍ϩʔϦϯάΞοϓσʔτʹର Ԡ
27. Service • Pod֎͔ΒPodʹΞΫηε͢ΔͨΊʹར༻͢Δ Ϧιʔε
28. ࢀߟࢿྉ
29. ϦϯΫ • Kubectl cheat sheet • https://kubernetes.io/docs/reference/kubectl/cheatsheet/