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kubesprayを使ったオンプレミス/クラウドプロバイダへのKubernetesのインストール

This quickstart helps to install a Kubernetes cluster hosted on GCE, Azure, OpenStack, AWS, vSphere, Oracle Cloud Infrastructure (Experimental) or Baremetal with Kubespray.

Kubespray is a composition of Ansible playbooks, inventory, provisioning tools, and domain knowledge for generic OS/Kubernetes clusters configuration management tasks. Kubespray provides:

To choose a tool which best fits your use case, read this comparison to kubeadm and kops.

クラスタの作成

(1/5) 下地の要件の確認

Provision servers with the following requirements:

Kubespray provides the following utilities to help provision your environment:

(2/5) インベントリファイルの用意

After you provision your servers, create an inventory file for Ansible. You can do this manually or via a dynamic inventory script. For more information, see “Building your own inventory”.

(3/5) クラスタ作成の計画

Kubespray provides the ability to customize many aspects of the deployment:

Kubespray customizations can be made to a variable file. If you are just getting started with Kubespray, consider using the Kubespray defaults to deploy your cluster and explore Kubernetes.

(4/5) クラスタのデプロイ

Next, deploy your cluster:

Cluster deployment using ansible-playbook.

ansible-playbook -i your/inventory/hosts.ini cluster.yml -b -v \
  --private-key=~/.ssh/private_key

Large deployments (100+ nodes) may require specific adjustments for best results.

(5/5) デプロイの確認

Kubespray provides a way to verify inter-pod connectivity and DNS resolve with Netchecker. Netchecker ensures the netchecker-agents pods can resolve DNS requests and ping each over within the default namespace. Those pods mimic similar behavior of the rest of the workloads and serve as cluster health indicators.

クラスタの操作

Kubespray provides additional playbooks to manage your cluster: scale and upgrade.

クラスタのスケール

You can add worker nodes from your cluster by running the scale playbook. For more information, see “Adding nodes”. You can remove worker nodes from your cluster by running the remove-node playbook. For more information, see “Remove nodes”.

クラスタのアップグレード

You can upgrade your cluster by running the upgrade-cluster playbook. For more information, see “Upgrades”.

クリーンアップ

You can reset your nodes and wipe out all components installed with Kubespray via the reset playbook.

注意: When running the reset playbook, be sure not to accidentally target your production cluster!

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次の項目

Check out planned work on Kubespray’s roadmap.

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