kindで作るローカルk8s開発環境

Transcript

1. kindͰ࡞ΔϩʔΧϧk8s։ൃ؀ڥ 2020/1 @sinohara
2. TL;DR • kubernetes͸ॳֶऀ΁ͷෑډ͕૬มΘΒͣߴ͍ • kind͸docker͕ಈ͘؀ڥ͑͋͞Ε͹kubernetes ؀ڥ͕࡞ΕΔͷͰ͓קΊ
3. Kenta Shinohara @ NSݚN੍PωࣜDP • Ϋϥ΢υωΠςΟϒNFVج൫ͷݚڀɾ։ൃ • 1/31 NTT Tech Conference #4ͰLT͠·ͨ͠ Copyright©2020 NTT Corp. All Rights Reserved. NTT Tech Conf#4 @2020/1/31 1
4. ຊ೔ͷ͓୊ɿ ϩʔΧϧk8s؀ڥ • k8s৮ͬͨ͜ͱ͋Δਓʁ • ͓ࢼ͢͠Δʹ΋k8s؀ڥͬͯ ΍ͬͺΓෑډ͕ߴ͍
5. ϚωʔδυαʔϏεʁ • ߏஙʹ20෼͔͔Δ • ߴ͍($72/݄~) • 5෼͘Β͍Ͱߏஙग़དྷΔ • ߴ͍($24/݄)
6. ϩʔΧϧ k8sʁ • minikube • hypervisorϕʔε • Virtual box, hyperkit, parallels, vmware, etc… • 2vCPU / 2GB mem • γϯάϧϊʔυΫϥελ • master/workerಉډߏ੒ • ΋͏গͪ͠ΌΜͱͨ͠؀ڥ͕ཉ͍͠ɾɾ
7. kind : kubernetes in docker • dockerίϯςφ্Ͱmulti-node cluster؀ڥΛ ࡞Δߏஙπʔϧ
8. how to use kind kind-config.yml
9. how to use kind
10. kind architecure Server docker docker docker Kube-apiserver Kube-controller Kube-scheduler etcd kube-proxy coredns Image: kindest/node:v1.17.0 kind.cluster: test kind.role: control-plane Image: kindest/node:v1.17.0 kind.cluster: test kind.role: worker Image: kindest/node:v1.17.0 kind.cluster: test kind.role: worker Kubelet kube-proxy Kubelet Kubelet kube-proxy cni: kindnet cni: kindnet cni: kindnet EPDLFS
    CSJEHF ίϯςφͷJQ
    SPVUFJQUBCMFTΛ؅ཧ
11. ࢀߟɿπʔϧൺֱ • kind • minikube virtualbox • minikube hyperkit kind Minikube virtualbox Minikube hyperkit Start-up time [sec] 82 133.65 141.14 CPU% 25 30 20 Memory [MiB] 622 2071 * wired down pages 2615 node Master x1 worker x2 Single node Single node environment: MacBook Pro 2017, CPU: Intel Core i5 2.3GHz, Memory: 16GB
12. ࢀߟɿkindnet-cni
13. kindΛ࢖͑͹ɾɾ • docker؀ڥ͑͋͞Ε͹k8s؀ڥΛ ϩʔΧϧͰ࡞ΕΔʂ • minikubeΑΓಈ࡞͕଎ͯܰ͘ྔʂ • multi-node؀ڥͰ༡΂Δʂ
15. kind architecure ;ͨͨͼ Server docker docker docker Kube-apiserver Kube-controller Kube-scheduler etcd kube-proxy coredns Image: kindest/node:v1.17.0 kind.cluster: test kind.role: control-plane Image: kindest/node:v1.17.0 kind.cluster: test kind.role: worker Image: kindest/node:v1.17.0 kind.cluster: test kind.role: worker Kubelet kube-proxy Kubelet Kubelet kube-proxy cni: kindnet cni: kindnet cni: kindnet EPDLFS
    CSJEHF frontend Pod frontend Pod frontend Pod Redis-master Pod Redis-slave Pod Redis-slave Pod github/kubernetes/examples/guestbook
16. docker ps Kubernetes resource ϗετ͔Β1PEʹ౸ୡ͢Δܦ࿏͕ແ͍
17. kubefwd • https://github.com/txn2/kubefwd • kubectl port-forwardΛ·ͱΊ࣮ͯߦͯ͘͠ΕΔπʔϧ
20. Takeaways • kind+kubefwdΛ࢖ͬͨk8s։ൃ؀ڥͷ঺հ • ҎԼͷ੍໿͸͋Δ͚Ͳେମͷέʔε͸OK? • kubectl port-forward͸UDPඇରԠ • localͰϏϧυͨ͠ίϯςφΠϝʔδ͸ `kind load`ίϚϯυͰk8sίϯςφʹΠϝʔδసૹ͢Δඞཁ͋Γ