基于Linux系统使用Kind快速安装体验kubernetes

声明：本实验是在Linux系统环境下进行演示。

1.安装kubectl

$ yum install -y kubectl

$ kubectl version --client
Client Version: v1.28.2
Kustomize Version: v5.0.4-0.20230601165947-6ce0bf390ce3

2.安装kind

# For AMD64 / x86_64
[ $(uname -m) = x86_64 ] && curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.20.0/kind-$(uname)-amd64

注：需要科学上网

chmod +x ./kind

sudo mv ./kind /usr/local/bin/kind

$ kind version
kind v0.20.0 go1.20.4 linux/amd64

3.安装Docker

要使用kind，需要安装docker。

# 安装yum-utils包（它提供yum-config-manager实用程序）
$ sudo yum install -y yum-utils

# 设置存储库
$ sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

# 安装Docker Engine、containerd和Docker Compose
$ sudo yum install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

# 启动docker服务
$ systemctl start docker && systemctl enable docker
$ systemctl status docker

#　查看docker信息
$ docker version
Client: Docker Engine - Community
 Version:           24.0.7
 API version:       1.43
 Go version:        go1.20.10
 Git commit:        afdd53b
 Built:             Thu Oct 26 09:11:35 2023
 OS/Arch:           linux/amd64
 Context:           default

4.部署多个Kind集群

1??# 部署kind
[root@Kind ~]# kind create cluster
Creating cluster "kind" ...
 ? Ensuring node image (kindest/node:v1.27.3) 🖼
 ? Preparing nodes 📦
 ? Writing configuration 📜
 ? Starting control-plane 🕹?
 ? Installing CNI 🔌
 ? Installing StorageClass 💾
Set kubectl context to "kind-kind"
You can now use your cluster with:

kubectl cluster-info --context kind-kind

Not sure what to do next? 😅  Check out https://kind.sigs.k8s.io/docs/user/quick-start/

2??# 部署kind-2
[root@Kind ~]# kind create cluster --name kind-02
Creating cluster "kind-02" ...
 ? Ensuring node image (kindest/node:v1.27.3) 🖼
 ? Preparing nodes 📦
 ? Writing configuration 📜
 ? Starting control-plane 🕹?
 ? Installing CNI 🔌
 ? Installing StorageClass 💾
Set kubectl context to "kind-kind-02"
You can now use your cluster with:

kubectl cluster-info --context kind-kind-02

Thanks for using kind! 😊

5.查看Cluster

[root@Kind ~]# kubectl get nodes
NAME                 STATUS   ROLES           AGE     VERSION
kind-control-plane   Ready    control-plane   4h36m   v1.27.3

[root@Kind ~]# kind get clusters
kind
kind-02

查看集群Pod组件。

[root@Kind ~]# kubectl get pods -A
NAMESPACE            NAME                                            READY   STATUS    RESTARTS   AGE
kube-system          coredns-5d78c9869d-66788                        1/1     Running   0          11s
kube-system          coredns-5d78c9869d-snf8b                        1/1     Running   0          11s
kube-system          etcd-kind-01-control-plane                      1/1     Running   0          24s
kube-system          kindnet-ljmm9                                   1/1     Running   0          11s
kube-system          kube-apiserver-kind-01-control-plane            1/1     Running   0          26s
kube-system          kube-controller-manager-kind-01-control-plane   1/1     Running   0          24s
kube-system          kube-proxy-g4z7c                                1/1     Running   0          11s
kube-system          kube-scheduler-kind-01-control-plane            1/1     Running   0          24s
local-path-storage   local-path-provisioner-6bc4bddd6b-hg48b         1/1     Running   0          11s

6.切换kind集群

[root@Kind ~]# kubectl config use-context kind-kind
Switched to context "kind-kind".
[root@Kind ~]# kubectl get nodes
NAME                 STATUS   ROLES           AGE     VERSION
kind-control-plane   Ready    control-plane   5h49m   v1.27.3
[root@Kind ~]# kubectl config use-context kind-kind-02
Switched to context "kind-kind-02".
[root@Kind ~]# kubectl get nodes
NAME                    STATUS   ROLES           AGE   VERSION
kind-02-control-plane   Ready    control-plane   69m   v1.27.3

7.指定镜像版本安装集群

kind create cluster --name kind-xyb --image kindest/node:v1.25.4

[root@Kind ~]# kind create cluster --name kind-xyb --image kindest/node:v1.25.3
Creating cluster "kind-xyb" ...
 ? Ensuring node image (kindest/node:v1.25.3) 🖼
 ? Preparing nodes 📦
 ? Writing configuration 📜
 ? Starting control-plane 🕹?
 ? Installing CNI 🔌
 ? Installing StorageClass 💾
Set kubectl context to "kind-kind-xyb"
You can now use your cluster with:

kubectl cluster-info --context kind-kind-xyb

Not sure what to do next? 😅  Check out https://kind.sigs.k8s.io/docs/user/quick-start/

[root@Kind ~]# kubectl config use-context kind-kind-xyb
Switched to context "kind-kind-xyb".
[root@Kind ~]# kubectl get nodes -A
NAME                     STATUS   ROLES           AGE     VERSION
kind-xyb-control-plane   Ready    control-plane   9m15s   v1.25.3

8.删除Kind集群

[root@Kind ~]# kind get clusters
kind
kind-02
[root@Kind ~]# kind delete cluster --name kind-02
Deleting cluster "kind-02" ...
Deleted nodes: ["kind-02-control-plane"]
[root@Kind ~]# kind get clusters
kind
[root@Kind ~]# kind delete cluster --name kind
Deleting cluster "kind" ...
Deleted nodes: ["kind-control-plane"]
[root@Kind ~]# kind get clusters
No kind clusters found.
[root@Kind ~]#

9.查看kind 帮助命令

[root@Kind ~]# kind -h
kind creates and manages local Kubernetes clusters using Docker container 'nodes'

Usage:
  kind [command]

Available Commands:
  build       Build one of [node-image]
  completion  Output shell completion code for the specified shell (bash, zsh or fish)
  create      Creates one of [cluster]
  delete      Deletes one of [cluster]
  export      Exports one of [kubeconfig, logs]
  get         Gets one of [clusters, nodes, kubeconfig]
  help        Help about any command
  load        Loads images into nodes
  version     Prints the kind CLI version

Flags:
  -h, --help              help for kind
      --loglevel string   DEPRECATED: see -v instead
  -q, --quiet             silence all stderr output
  -v, --verbosity int32   info log verbosity, higher value produces more output
      --version           version for kind

Use "kind [command] --help" for more information about a command.

10.查看kind create帮助命令

[root@Kind ~]# kind create cluster -h
Creates a local Kubernetes cluster using Docker container 'nodes'

Usage:
  kind create cluster [flags]

Flags:
      --config string       path to a kind config file
  -h, --help                help for cluster
      --image string        node docker image to use for booting the cluster
      --kubeconfig string   sets kubeconfig path instead of $KUBECONFIG or $HOME/.kube/config
  -n, --name string         cluster name, overrides KIND_CLUSTER_NAME, config (default kind)
      --retain              retain nodes for debugging when cluster creation fails
      --wait duration       wait for control plane node to be ready (default 0s)

Global Flags:
      --loglevel string   DEPRECATED: see -v instead
  -q, --quiet             silence all stderr output
  -v, --verbosity int32   info log verbosity, higher value produces more output

11.使用配置文件安装集群

# config.yaml
kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
name: xybdiy
nodes:
- role: control-plane
- role: worker
- role: worker

该配置文件表示一共要创建 3 个节点，一个控制节点，两个工作节点，在创建集群的时候只需要通过 --config 参
数指定该文件即可：

kind create cluster --config config.yaml

[root@Kind ~]# kubectl create cluster --config config.yaml
error: unknown flag: --config
See 'kubectl create --help' for usage.
[root@Kind ~]# kind create cluster --config config.yaml
Creating cluster "xybdiy" ...
 ? Ensuring node image (kindest/node:v1.27.3) 🖼
 ? Preparing nodes 📦 📦 📦
 ? Writing configuration 📜
 ? Starting control-plane 🕹?
 ? Installing CNI 🔌
 ? Installing StorageClass 💾
 ? Joining worker nodes 🚜
Set kubectl context to "kind-xybdiy"
You can now use your cluster with:

kubectl cluster-info --context kind-xybdiy

Have a nice day! 👋

[root@Kind ~]# kubectl cluster-info --context kind-xybdiy
Kubernetes control plane is running at https://127.0.0.1:45025
CoreDNS is running at https://127.0.0.1:45025/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy

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

[root@Kind ~]# kind get clusters
xybdiy

[root@Kind ~]# kind get nodes -A
xybdiy-worker
xybdiy-worker2
xybdiy-control-plane

[root@Kind ~]# kind get clusters
xybdiy

[root@Kind ~]# kubectl get pods -A
NAMESPACE            NAME                                           READY   STATUS    RESTARTS   AGE
kube-system          coredns-5d78c9869d-5hxw8                       1/1     Running   0          11m
kube-system          coredns-5d78c9869d-ttwsq                       1/1     Running   0          11m
kube-system          etcd-xybdiy-control-plane                      1/1     Running   0          12m
kube-system          kindnet-9ss5b                                  1/1     Running   0          11m
kube-system          kindnet-h875t                                  1/1     Running   0          11m
kube-system          kindnet-xqxsj                                  1/1     Running   0          11m
kube-system          kube-apiserver-xybdiy-control-plane            1/1     Running   0          12m
kube-system          kube-controller-manager-xybdiy-control-plane   1/1     Running   0          12m
kube-system          kube-proxy-28sv8                               1/1     Running   0          11m
kube-system          kube-proxy-bb5z7                               1/1     Running   0          11m
kube-system          kube-proxy-cwd2k                               1/1     Running   0          11m
kube-system          kube-scheduler-xybdiy-control-plane            1/1     Running   0          12m
local-path-storage   local-path-provisioner-6bc4bddd6b-t6b9l        1/1     Running   0          11m

12.参考链接

1??https://github.com/kubernetes-sigs/kind/releases

2??https://github.com/kubernetes-sigs/kind/