k8s 集群部署 kubesphere

一、最小化部署 kubesphere

1、在已有的 Kubernetes 集群上部署 KubeSphere，下载 YAML 文件:

wget https://github.com/kubesphere/ks-installer/releases/download/v3.4.0/kubesphere-installer.yaml
wget https://github.com/kubesphere/ks-installer/releases/download/v3.4.0/cluster-configuration.yaml
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2、执行以下命令部署 kubesphere：

kubectl apply -f kubesphere-installer.yaml
kubectl apply -f cluster-configuration.yaml
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二、中途遇到的报错及解决方法

说明：这里基本所有同学都不可能成功安装，因为我们使用的Host Storage存储，因此需要手动创建存储类，会出现以下报错信息：

fatal: [localhost]: FAILED! => {
    "assertion": "\"(default)\" in default_storage_class_check.stdout",
    "changed": false,
    "evaluated_to": false,
    "msg": "Default StorageClass was not found !"
}
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解决方法如下：
1、创建文件storageclass.yaml

kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
  name: local-storage
provisioner: kubernetes.io/no-provisioner
volumeBindingMode: WaitForFirstConsumer
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2、创建文件persistentVolumeClaim.yaml

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: local-pve
spec:
  accessModes:
     - ReadWriteOnce
  resources:
    requests:
      storage: 20Gi
  storageClassName: local-storage
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3、修改sc为默认标识为default

kubectl patch sc local-storage -p '{"metadata": {"annotations": {"storageclass.beta.kubernetes.io/is-default-class": "true"}}}'
## local-storage 是 sc 的名称
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三、重新部署 kubesphere

1、重新执行以下命令即可 kubesphere

kubectl apply -f kubesphere-installer.yaml
kubectl apply -f cluster-configuration.yaml
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2、检查安装日志：

kubectl logs -n kubesphere-system $(kubectl get pod -n kubesphere-system -l 'app in (ks-install, ks-installer)' -o jsonpath='{.items[0].metadata.name}') -f
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3、安装完成后，您会看到以下消息：

#####################################################
###              Welcome to KubeSphere!           ###
#####################################################

Console: http://192.168.122.154:30880
Account: admin
Password: P@88w0rd
NOTES：
  1. After you log into the console, please check the
     monitoring status of service components in
     "Cluster Management". If any service is not
     ready, please wait patiently until all components 
     are up and running.
  2. Please change the default password after login.

#####################################################
https://kubesphere.io             2023-10-09 14:16:39
#####################################################
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4、查看pod是否正常运行

[root@kubernetes-master ~]# kubectl get pod,svc -n kubesphere-system
NAME                                         READY   STATUS    RESTARTS   AGE
pod/ks-apiserver-b7ddc4f5c-ss4kz             1/1     Running   0          26h
pod/ks-console-7c48dd4c9f-n6v7n              1/1     Running   0          26h
pod/ks-controller-manager-854ff655d4-zpv2f   1/1     Running   0          26h
pod/ks-installer-6d7d97c687-mw6m5            1/1     Running   0          26h

NAME                            TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)        AGE
service/ks-apiserver            ClusterIP   10.109.175.154           80/TCP         26h
service/ks-console              NodePort    10.97.19.79              80:30880/TCP   26h
service/ks-controller-manager   ClusterIP   10.103.231.3             443/TCP        26h
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四、登录 kubesphere 控制台