k8s_basic_monitoring.pdf

Transcript

1. K8S BASIC MONITORING STARTUP THE LEARNING KUBERNETES
2. MY NAME IS NNAO45 ࣗݾ঺հ ˏnnao45 ✓ 26ࡀ(ฏ੒3೥ੜ·Ε) ✓ ࠓ͸ओʹΫϥ΢υ԰ ✓ ཱڭେֶཧֶ෦ԽֶՊଔۀ ✓ ςχεྺ10೥ ✓ ITྺ4೥໨ ✓ Go࠷ߴ!!zsh࠷ߴ!! ✓cndjpษڧձӡӦ ✓גࣜձࣾαΠόʔΤʔδΣϯτॴଐ ✓ ݩISPͷNW͕ϝΠϯ
3. INTRODUCTION OF START UP THE K8S MONITORING. ͱΓ͋͑ͣKUBERNETESͷ෮शͷ΍ͭ ͱΓ͋͑ͣ஫໨ͯ͠Δͱ͔ݴ͓͖ͬͯΌ͍͍ײ͕͋ΔόζͬͯΔ΍ͭɻ ίϯςφ؅ཧʹඞཁͳϚΠΫϩαʔϏε܈ͬͯײ͡ɻ https://www2.wwt.com/all-blog/kubernetes-101/kubernetes-101-3/
4. INTRODUCTION OF START UP THE K8S MONITORING. ͱΓ͋͑ͣKUBERNETESͷ෮शͷ΍ͭ ཁ͸ɺίϯςφʔͷΦʔέετϨʔλʔɻ ·ͨͦΕΛୡ੒͢ΔͨΊͷϚΠΫϩαʔϏε܈ɻ http://dondocker.com/guardar-nuestras-imagenes-docker/
5. INTRODUCTION OF START UP THE K8S MONITORING. ͱΓ͋͑ͣKUBERNETESͷ෮शͷ΍ͭ ImmutableɾɾɾʮෆมʯͳΠϯϑϥɻ Declarationɾɾɾʮએݴʯతઃఆɻ Self-healingɾɾɾࣗݾճ෮͢ΔγεςϜɻ Micro-serviceɾɾɾAPI࿈ܞʹΑΔίϯϙʔωϯτͷ෼཭ɻ Abstractionɾɾɾந৅ԽʹΑΔϙʔλϏϦςΟɻ kubernetesͷࢥ૝
6. INTRODUCTION OF START UP THE K8S MONITORING. ͱΓ͋͑ͣKUBERNETESͷ෮शͷ΍ͭ LinuxͷίϯςφϥϯλΠϜʹΑΓ࿦ཧతʹ෼཭͞Εͨϓϩηεɻ ͲΕ͘Β͍ɺԿΛ෼཭͍ͯ͠Δ͔͸ίϯςφϥϯλΠϜʹΑΔɻ ίϯςφ Container
7. INTRODUCTION OF START UP THE K8S MONITORING. ͱΓ͋͑ͣKUBERNETESͷ෮शͷ΍ͭ kubernetesͷ؅ཧ͢Δίϯςφ܈ͷ࠷খ୯Ґɻ ஫ҙͳͷ͸ɺpod಺ͷίϯςφ͸̍ݸҎ্Ͱ΋podɻ ίϯςφ ίϯςφ ϙου Pod
8. INTRODUCTION OF START UP THE K8S MONITORING. ͱΓ͋͑ͣKUBERNETESͷ෮शͷ΍ͭ KubernetesΛ૸ΒͤΔɺϗετͷࣄΛࢦ͢ɻ ͪͳΈʹϚελʔϊʔυͱ͔ɺϫʔΧʔϊʔυͱ͔͍͏ දݱ͸આ໌ͷ্Ͱ͸ศར͕ͩ͋·Γਖ਼֬͡Όͳ͍ʢͱࢥͬͯΔʣɻ ίϯςφ ίϯςφ ϙου Node ίϯςφ ίϯςφ ϙου ϊʔυ
9. INTRODUCTION OF START UP THE K8S MONITORING. ͱΓ͋͑ͣKUBERNETESͷ෮शͷ΍ͭ ̍ͭͷϚελʔϊʔυ(ਖ਼֬ʹ͸Ұ૊ͷϚελʔϓϩηε)Ͱ ؅ཧ͞ΕΔϫʔΧʔϊʔυʢਖ਼֬ʹ͸೚ҙͷ૊ͷϫʔΧʔϓϩηεʣ܈ ίϯςφ ίϯςφ ϙου Cluster ίϯςφ ίϯςφ ϙου ϊʔυ ίϯςφ ίϯςφ ϙου ίϯςφ ίϯςφ ϙου ϊʔυ Ϋϥελʔ
10. INTRODUCTION OF START UP THE K8S MONITORING. ͱΓ͋͑ͣKUBERNETESͷ෮शͷ΍ͭ ΫϥελʔͷதͰ࿦ཧతʹϙουΛ ؅ཧ͍ͨ͠ͱ͖ʹ࢖͏୯Ґɻແࢦఆͷ৔߹defaultωʔϜεϖʔεɻ ίϯςφ ίϯςφ ϙου NameSpace ίϯςφ ίϯςφ ϙου ϊʔυ ίϯςφ ίϯςφ ϙου ίϯςφ ίϯςφ ϙου ϊʔυ Ϋϥελʔ ίϯςφ ίϯςφ ϙου ίϯςφ ίϯςφ ϙου ωʔϜ εϖʔε ωʔϜ εϖʔε ϊʔυΛ·ͨ͛Δͷ஌ͬͯͨʁ
11. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness Lifecycle Logging Kube-health
12. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness ʮLiveness probeʯʹΑΔϓϩηε؂ࢹ ʮReadiness probeʯʹΑΔAPI؂ࢹ Lifecycle Logging Kube-health
13. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness ʮLiveness probeʯʹΑΔϓϩηε؂ࢹ ʮReadiness probeʯʹΑΔAPI؂ࢹ Lifecycle Logging Kube-health
14. ʮLiveness probeʯʹΑΔϓϩηε؂ࢹ LOOK AT THE K8S DEFAULT FUNCTION. apiVersion: v1 kind: Pod ~snip~ livenessProbe: exec: command: - cat - /tmp/healthy initialDelaySeconds: 5 periodSeconds: 5 ~snip~ pods/probe/exec-liveness.yaml ✓ ͦͷίϯςφͷਖ਼ৗੑΛ httpϦΫΤετ΍ɺpingɺ ϑΝΠϧଘࡏͳͲͰ֬ೝ͢Δɻ ࣦഊͰ֘౰pod࠶ىಈ Pod Kubernetes cluster /tmp/healthy
15. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness ʮLiveness probeʯʹΑΔϓϩηε؂ࢹ ʮReadiness probeʯʹΑΔAPI؂ࢹ Lifecycle Logging Kube-health
16. ʮReadiness probeʯʹΑΔ४උঢ়ଶͷ؂ࢹ LOOK AT THE K8S DEFAULT FUNCTION. apiVersion: v1 kind: Pod ~snip~ readinessProbe: tcpSocket: port: 8080 initialDelaySeconds: 40 periodSeconds: 10 ~snip~ pods/probe/exec-readiness.yaml ✓ ͦͷίϯςφ͕࠷ॳ͸ ϦΫΤετΛड͚෇͚ͳ͍ঢ়ଶͰ ىಈͯ͠ɺReadiness͕OKޙɺ ϦΫΤετΛड͚ΔΑ͏ʹ͢Δɻ
17. ʮReadiness probeʯɾɾɾʁ ɹɹɹʮLiveness probeʯɾɾɾʁ LOOK AT THE K8S DEFAULT FUNCTION.
18. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness Lifecycle Logging Kube-health
19. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness Lifecycle ʮReplica SetʯʹΑΔ߹ܭPod਺؅ཧɻ ʮDaemon SetʯʹΑΔper nodeͳPod਺؂ࢹ Logging Kube-health
20. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness Lifecycle ʮReplica SetʯʹΑΔ߹ܭPod਺؅ཧɻ ʮDaemon SetʯʹΑΔper nodeͳPod਺؂ࢹ Logging Kube-health
21. ʮReplica SetʯʹΑΔ߹ܭPod਺؅ཧɻ LOOK AT THE K8S DEFAULT FUNCTION. Kubernetes Cluster Worker Node Pod Pod Pod Worker Node ✓ʮશ෦Ͱ3ݸɺSlaveͷDB ͕ཉ͍͠ʯ࣌ͳͲʹ࢖͏ɻ apiVersion: apps/v1 kind: ReplicaSet metadata: name: frontend labels: app: guestbook tier: frontend spec: # this replicas value is default # modify it according to your case replicas: 3 ~snip~ controllers/frontend.yaml
22. LOOK AT THE K8S DEFAULT FUNCTION. Kubernetes Cluster Worker Node Worker Node ෛՙ͕গͳ͍Node͔Β શ෦ͰPodΛ̏ݸ࡞Ζ͏ɻ ReplicaSet Controller DEPLOY DEPLOY DEPLOY apiVersion: apps/v1 kind: ReplicaSet metadata: name: frontend labels: app: guestbook tier: frontend spec: # this replicas value is default # modify it according to your case replicas: 3 ~snip~ controllers/frontend.yaml ʮReplica SetʯʹΑΔ߹ܭPod਺؅ཧɻ
23. LOOK AT THE K8S DEFAULT FUNCTION. ReplicaSet Controller Kubernetes Cluster Worker Node Pod Pod Pod Worker Node શ෦Ͱ3ݸ͋Δ͔ΒOK apiVersion: apps/v1 kind: ReplicaSet metadata: name: frontend labels: app: guestbook tier: frontend spec: # this replicas value is default # modify it according to your case replicas: 3 ~snip~ controllers/frontend.yaml ʮReplica SetʯʹΑΔ߹ܭPod਺؅ཧɻ
24. LOOK AT THE K8S DEFAULT FUNCTION. ReplicaSet Controller Kubernetes Cluster Worker Node Pod Pod Pod Worker Node ͋ɺ̍ݸམͪͨʂ apiVersion: apps/v1 kind: ReplicaSet metadata: name: frontend labels: app: guestbook tier: frontend spec: # this replicas value is default # modify it according to your case replicas: 3 ~snip~ controllers/frontend.yaml ʮReplica SetʯʹΑΔ߹ܭPod਺؅ཧɻ
25. LOOK AT THE K8S DEFAULT FUNCTION. apiVersion: apps/v1 kind: ReplicaSet metadata: name: frontend labels: app: guestbook tier: frontend spec: # this replicas value is default # modify it according to your case replicas: 3 ~snip~ controllers/frontend.yaml ReplicaSet Controller Kubernetes Cluster Worker Node Pod Pod Pod Worker Node ̏ݸΛΩʔϓ͠ͳ͖Όɻ ̍ݸσϓϩΠʔʂ DEPLOY ʮReplica SetʯʹΑΔ߹ܭPod਺؅ཧɻ
26. LOOK AT THE K8S DEFAULT FUNCTION. apiVersion: apps/v1 kind: ReplicaSet metadata: name: frontend labels: app: guestbook tier: frontend spec: # this replicas value is default # modify it according to your case replicas: 3 ~snip~ controllers/frontend.yaml ReplicaSet Controller Kubernetes Cluster Worker Node Pod Pod Pod Worker Node શ෦Ͱ3ݸ͋Δ͔ΒOK Pod ʮReplica SetʯʹΑΔ߹ܭPod਺؅ཧɻ
27. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness Lifecycle ʮReplica SetʯʹΑΔ߹ܭPod਺؅ཧɻ ʮDaemon SetʯʹΑΔper nodeͳPod਺؂ࢹ Logging Kube-health
28. ʮDaemon SetʯʹΑΔper nodeͳPod਺؂ࢹ LOOK AT THE K8S DEFAULT FUNCTION. Kubernetes Cluster Worker Node apiVersion: apps/v1 kind: DaemonSet metadata: name: fluentd-elasticsearch namespace: kube-system labels: k8s-app: log ~snip~ controllers/daemonset.yaml Worker Node Worker Node log log Pod Pod ✓ʮಛఆͷϊʔυʹ̍ݸͣͭɺ ϩάͷPod͕ཉ͍͠ʯͳͲ ͷ࣌ʹ࢖͏ɻ
29. ʮDaemon SetʯʹΑΔper nodeͳPod਺؂ࢹ LOOK AT THE K8S DEFAULT FUNCTION. Kubernetes Cluster Worker Node tagͰࢦఆͨ͠ϊʔυʹ ̍ݸͣͭͰσϓϩΠɻ ReplicaSet Controller DEPLOY DEPLOY apiVersion: apps/v1 kind: DaemonSet metadata: name: fluentd-elasticsearch namespace: kube-system labels: k8s-app: log ~snip~ controllers/daemonset.yaml Worker Node log log Worker Node
30. ʮDaemon SetʯʹΑΔper nodeͳPod਺؂ࢹ LOOK AT THE K8S DEFAULT FUNCTION. Kubernetes Cluster Worker Node tagͰࢦఆͨ͠ϊʔυʹ ̍ݸͣͭ͋Δ͔ΒOKɻ ReplicaSet Controller apiVersion: apps/v1 kind: DaemonSet metadata: name: fluentd-elasticsearch namespace: kube-system labels: k8s-app: log ~snip~ controllers/daemonset.yaml Worker Node log log Pod Pod Worker Node
31. ͳΔ΄Ͳɺɺɺɺʁ LOOK AT THE K8S DEFAULT FUNCTION.
32. σϞΓ·͢ɻ LOOK AT THE K8S DEFAULT FUNCTION. Kubernetes Cluster K8s-node-001 K8s-node-002 K8s-node-003 Master Worker Worker K8s-lab-001 VIP (LB) Metallb Metallb Master
33. σϞᶃ LOOK AT THE K8S DEFAULT FUNCTION. Kubernetes Cluster K8s-node-001 K8s-node-002 K8s-node-003 Master Worker Worker K8s-lab-001 VIP (LB) Metallb Metallb Master ̍ճୟ͔Ε ͨΒࢮ͵
34. σϞᶄ LOOK AT THE K8S DEFAULT FUNCTION. Kubernetes Cluster K8s-node-001 K8s-node-002 K8s-node-003 Master Worker Worker K8s-lab-001 VIP (LB) Metallb Metallb Master 10ඵ ܦͬͨΒαʔ Ϗε։࢝ 10ඵ ܦͬͨΒαʔ Ϗε։࢝
35. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness Lifecycle Logging Kube-health
36. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness Lifecycle Logging ίϯςφϨϕϧͷpod͔ΒͷϩΪϯά ϊʔυϨϕϧͷpod͔ΒͷϩΪϯά ΫϥελϨϕϧͷpod͔ΒͷϩΪϯά Kube-health
37. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness Lifecycle Logging ίϯςφϨϕϧͷpod͔ΒͷϩΪϯά ϊʔυϨϕϧͷpod͔ΒͷϩΪϯά ΫϥελϨϕϧͷpod͔ΒͷϩΪϯά Kube-health
38. ίϯςφϨϕϧͷpod͔ΒͷϩΪϯά LOOK AT THE K8S DEFAULT FUNCTION. apiVersion: v1 kind: Pod metadata: name: counter spec: containers: - name: count image: busybox args: [/bin/sh, -c, 'i=0; while true; do echo "$i: $(date)"; i=$((i+1)); sleep 1; done'] debug/counter-pod.yaml Pod ✓ Ұ൪جຊతͳϩΪϯάͰɺ kubectl logsͰݟΔ ࢓૊Έ͸ͨͩpodsͷstdoutͱ stderrΛݟͯΔ͚ͩɻ Container stdout stderr ʼKUBECTL GET LOGS
39. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness Lifecycle Logging ίϯςφϨϕϧͷpod͔ΒͷϩΪϯά ϊʔυϨϕϧͷpod͔ΒͷϩΪϯά ΫϥελϨϕϧͷpod͔ΒͷϩΪϯά Statement
40. Node ϊʔυϨϕϧͷpod͔ΒͷϩΪϯά LOOK AT THE K8S DEFAULT FUNCTION. Pod ✓ϊʔυ୯ҐͰݟΔ৔߹͸ɺ pod͔Βഉग़͞ΕΔstdoutͱ stderrΛॴଐ͢Δϊʔυͷ ϑΝΠϧʹॻ͖ग़͓ͯ͘͠ɻ Container stdout stderr stdout stderr Pod Container log rotate archive ✓ ͜ͷΑ͏ʹߏஙͨ͠৔߹ɺ ϩά͸͔ͳΓͷྔʹͳΔࣄ͕ ଟ͍ͷͰɺಉ࣌ʹϩάͷ ϩʔςʔτͷ࢓૊ΈΛ࣮૷ ͓ͯ͘͠ࣄ͕΄΅ඞਢɻ
41. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness Lifecycle Logging ίϯςφϨϕϧͷpod͔ΒͷϩΪϯά ϊʔυϨϕϧͷpod͔ΒͷϩΪϯά ΫϥελϨϕϧͷpod͔ΒͷϩΪϯά Kube-health
42. ΫϥελϨϕϧͷpod͔ΒͷϩΪϯά LOOK AT THE K8S DEFAULT FUNCTION. Pod ✓ ͸͖ͬΓݴͬͯɺ Ϋϥελ୯ҐͰϩάΛݟ͍ͨ ৔߹Ͳ͏͢Δ͔͸࣮૷ʹΑΔɻ Container Pod Container ✓ ͱ͸ݴͬͯ΋ɺͦΕͰ ऴΘΓ͸ऐ͍͠ͷͰ ୅දతͳϩΪϯάγεςϜ Λݟ͍͖ͯ·͠ΐ͏ Pod Container Pod Container Kubernetes Cluster ?
43. Node ΫϥελϨϕϧͷpod͔ΒͷϩΪϯά LOOK AT THE K8S DEFAULT FUNCTION. ✓ ϊʔυϩΪϯάΤʔδΣϯτํࣜ Pod Container stdout stderr stdout stderr Pod Container Node Pod Container stdout stderr stdout stderr Pod Container Log agent log Backend ΫϥελϨϕϧͷpod͔ΒͷϩΪϯά
44. INTRODUCTION OF START UP THE K8S MONITORING. ͱΓ͋͑ͣKUBERNETESͷ෮शͷ΍ͭ Kubernetes্ͷpod಺Ͱɺ ҟͳΔίϯςφ͕ಉ͡σΟεΫʢྫ͑͹ϩάసૹ΍ίϯςϯπͷڞ༗ʣ Λڞ༗͍ͨ͠৔߹ʹ࢖͏΍ͭɻ Sidecarίϯςφ ίϯςφ ίϯςφ ϙου ϊʔυ σΟεΫ
45. Node log Backend ΫϥελϨϕϧͷpod͔ΒͷϩΪϯά LOOK AT THE K8S DEFAULT FUNCTION. ✓ ετϦʔϛϯάαΠυΧʔํࣜ Pod app streaming a.log node.log Pod app streaming b.log Pod app streaming node.log Pod app streaming Node a.log b.log stdout stderr stdout stderr stdout stderr stdout stderr Log agent
46. Node ΫϥελϨϕϧͷpod͔ΒͷϩΪϯά LOOK AT THE K8S DEFAULT FUNCTION. Pod App log Backend ΫϥελϨϕϧͷpod͔ΒͷϩΪϯά ✓ ϙουΠϯΤʔδΣϯτํࣜ˞ sidecar Log agent a.log Pod App sidecar Log agent b.log streaming streaming ※kubectl logs͔ΒϩάΛݟΔࣄ͕Ͱ͖ͳ͘ͳΔߏ੒Ͱ͢ɻ
47. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness Lifecycle Logging Kube-health
48. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness Lifecycle Logging Kube-health kubeࣗ਎ͷॏཁίϯϙʔωϯτͷ؂ࢹ ͦͷଞkube-systemͷ؂ࢹ HeapsterʹΑΔϦιʔε؂ࢹ
49. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness Lifecycle Logging Kube-health kubeࣗ਎ͷॏཁίϯϙʔωϯτͷ؂ࢹ ͦͷଞkube-systemͷ؂ࢹ HeapsterʹΑΔϦιʔε؂ࢹ
50. kubeࣗ਎ͷॏཁίϯϙʔωϯτͷ؂ࢹ ᶃ kubelet LOOK AT THE K8S DEFAULT FUNCTION. ✓ kubernetes্ͰίϯςφΛಈ͔͢ϫʔΧϓϩηεͷ৺ଁ෦ɻ ✓ docker,rktlet,containerd౳ͷϥϯλΠϜͱີ઀ͳؔ܎ʹ஫໨ ίϯςφͱͯ͠ॴ༗͢Δ಺෦IP΁ͷping؂ࢹ ίϯςφϥϯλΠϜͷσʔϞϯͷϓϩηε؂ࢹ kubeletίϯςφ͕crashLoopͯ͠ͳ͍͔Ͳ͏͔
51. kubeࣗ਎ͷॏཁίϯϙʔωϯτͷ؂ࢹ ᶄ etcd LOOK AT THE K8S DEFAULT FUNCTION. ✓ kubernetes্Ͱߏ੒৘ใΛอଘ͢Δ෼ࢄKVSɻ ✓ etcd͕࣋ͭಠࣗͷΤϯυϙΠϯτΛ؂ࢹ Listenͯ͠Δ(:2379౳)ϙʔτͷ؂ࢹ ίϯςφͱͯ͠ॴ༗͢Δ಺෦IP΁ͷping؂ࢹ /stats͔Β throughput, success, error, latencyϝτϦΫε /metrcs͔Βdisk ΦϖϨʔγϣϯ,gRPC ͳͲ಺෦ͷϝτϦΫε etcdίϯςφ͕crashLoopͯ͠ͳ͍͔Ͳ͏͔
52. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness Lifecycle Logging Kube-health kubeࣗ਎ͷॏཁίϯϙʔωϯτͷ؂ࢹ ͦͷଞkube-systemͷ؂ࢹ metrics-serverʹΑΔϦιʔε؂ࢹ
53. ͦͷଞkube-systemͷ؂ࢹ ᶃ kube-apiserver ᶄ kube-schedulerɾɾɾͳͲ LOOK AT THE K8S DEFAULT FUNCTION. ✓ ͍ΘΏΔϚελʔϊʔυͰಈ͍͍ͯΔϓϩηε ✓ σϑΥϧτͩͱ໊લۭؒkube-systemͰಈ͍͍ͯΔίϯςφ ίϯςφͱͯ͠ॴ༗͢Δ಺෦IP΁ͷping؂ࢹ ίϯςφ͕crashLoopͯ͠ͳ͍͔Ͳ͏͔ ͱΓ໊͋͑ͣલۭؒkube-systemͷίϯςφ਺͸ݟ͓ͯ͘
54. LOOK AT THE K8S DEFAULT FUNCTION. kubernetes͸μΠφϛοΫͳϥΠϑαΠΫϧΛඪ४Ͱ૷උɻ Liveness Lifecycle Logging Kube-health kubeࣗ਎ͷॏཁίϯϙʔωϯτͷ؂ࢹ ͦͷଞkube-systemͷ؂ࢹ metrics-serverʹΑΔϦιʔε؂ࢹ
55. LOOK AT THE K8S DEFAULT FUNCTION. ※ެࣜֆͰ͢ metrics-serverʹΑΔϦιʔε؂ࢹ https://github.com/kubernetes/community/blob/master/contributors/design-proposals/ instrumentation/monitoring_architecture.md
56. LOOK AT THE K8S DEFAULT FUNCTION. ※ެࣜֆͰ͢ metrics-serverʹΑΔϦιʔε؂ࢹ https://github.com/kubernetes/community/blob/master/contributors/design-proposals/ instrumentation/monitoring_architecture.md
57. LOOK AT THE K8S DEFAULT FUNCTION. ✓ kube1.7͘Β͍͸಺෦ͷϦιʔε؂ࢹ͸ʮHeapsterʯͱ͍͏ ίϯϙʔωϯτ͕΍͍ͬͯͨɻ ✓ kube1.8͔Βʮmetrics-serverʯͱ͍͏ίϯϙʔωϯτʹஔ͖ ׵ΘΓɺલड़ͨ͠ϙϯνֆͷΑ͏ͳΞʔΩςΫνϟʹͳΓɺΑ ΓϓϥΨϒϧͳΞʔΩςΫτʹɻ ✓ʮHeapsterʯ͸طʹඇਪ঑ͳίϯϙʔωϯτɻʮmetrics- serverʯʹΑΔʮOSS monitoring architectureʯͷํͰษڧΛ ਐΊ͍͖ͯ·͠ΐ͏(^p^) metrics-serverʹΑΔϦιʔε؂ࢹ
58. Master Node LOOK AT THE K8S DEFAULT FUNCTION. Worker Node Worker Node kubelet cAdvisor metrics- server Worker Node kubelet cAdvisor metrics.k8s.io api-server API CLIENT GET resource usage resource usage get data get data resource metrics pipelineʹΑΔجຊతͳϦιʔεऔಘ metrics-serverʹΑΔϦιʔε؂ࢹ
59. LOOK AT THE K8S DEFAULT FUNCTION. full monitoring pipelineʹΑΔϦονͳΧελϜϦιʔεऔಘ prometheusͱ͔͕͜ΕʹରԠ metrics-serverʹΑΔϦιʔε؂ࢹ ? https://www.weave.works/blog/kubernetes-horizontal-pod-autoscaler-and-prometheus
60. CONCLUSTION ·ͱΊ ɾkubernetesΛ࢖͑͹ɺඪ४Ͱ”௒”ߴੑೳͳ؂ࢹγεςϜ͕खʹ ೖΔɻผ్༻ҙ͢΂͖ͳͷ͸΄΅֎ܥ؂ࢹʹͳΔΑ͏ઃܭ͢΂͠ɻ ɾGKE΍EKSɺAKSͳͲૉ੖Β͍͠KaaSαʔϏεͰ࢝ΊΒΕΔͷ Ͱੋඇ͓ࢼ͍ͩ͘͠͞ɻ ɾͨͩɺࡉ͔͍νϡʔχϯάͰਅՁΛൃش͢ΔͷͰɺӡ༻ʹΑΔϊ ΢ϋ΢͕֤ݱ৔ͰٻΊΒΕΔͷ͸ؒҧ͍ͳ͍ɻ ɾ·ͣ͸ඪ४ͳػೳ͕Ͳ͏͍͏ಈ͖͔Λ஌Ζ͏ʂ
61. HACKER PM/PL サイバーエージェントでは エンジニアを募集しております. ※k8s,OpenStack,AWS,GCP触れるよ. http://rickandmorty.wikia.com/wiki/File:Rick_and_morty_wanted.png