Kubernetes の基本を学ぶ (クラスタの作成)

kubernetes

Published: 2019-10-27

やったこと

Kubernetes のチュートリアルをやります。

Mac のローカル環境で試します。

調査

Kubernetesクラスタ

マスターはクラスタの管理を担当します。
Nodeは、Kubernetesクラスタのワーカーマシンとして機能するVMまたは物理マシンです

チュートリアル

minikube version 確認

$ minikube version
minikube version: v1.4.0
commit: 7969c25a98a018b94ea87d949350f3271e9d64b6
$ minikube start
🎉  minikube 1.5.0 is available! Download it: https://github.com/kubernetes/minikube/releases/tag/v1.5.0
💡  To disable this notice, run: 'minikube config set WantUpdateNotification false'

🙄  minikube v1.4.0 on Darwin 10.13.6
💡  Tip: Use 'minikube start -p <name>' to create a new cluster, or 'minikube delete' to delete this one.
🏃  Using the running virtualbox "minikube" VM ...
⌛  Waiting for the host to be provisioned ...
🐳  Preparing Kubernetes v1.16.0 on Docker 18.09.9 ...
🔄  Relaunching Kubernetes using kubeadm ...
⌛  Waiting for: apiserver proxy etcd scheduler controller dns
🏄  Done! kubectl is now configured to use "minikube"

kubectl version 確認

$ kubectl version
Client Version: version.Info{Major:"1", Minor:"16", GitVersion:"v1.16.2", GitCommit:"c97fe5036ef3df2967d086711e6c0c405941e14b", GitTreeState:"clean", BuildDate:"2019-10-15T19:18:23Z", GoVersion:"go1.12.10", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"16", GitVersion:"v1.16.0", GitCommit:"2bd9643cee5b3b3a5ecbd3af49d09018f0773c77", GitTreeState:"clean", BuildDate:"2019-09-18T14:27:17Z", GoVersion:"go1.12.9", Compiler:"gc", Platform:"linux/amd64"}

$ kubectl cluster-info
Kubernetes master is running at https://192.168.99.102:8443
KubeDNS is running at https://192.168.99.102:8443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy

To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.

$ kubectl get nodes
NAME       STATUS   ROLES    AGE     VERSION
minikube   Ready    master   2d15h   v1.16.0

参考

Minikubeを使ったクラスタの作成 - Kubernetes