Kubernetes(K8S) kubesphere 安装

安装KubeSphere最好的方法就是参考官方文档，而且官方文档是中文的。
官网地址：https://kubesphere.com.cn/
https://github.com/kubesphere/kubesphere/blob/master/README_zh.md
Kubernetes(K8S) kubesphere 介绍
安装提前条件：
使用 Kubeadm 部署 Kubernetes(K8S) 安装--附K8S架构图
使用 Kubeadm 部署 Kubernetes(K8S) 安装 -- 持久化存储(NFS网络存储)
Kubernetes(K8S) 安装 Metrics-Server

1. # 检查 K8S 版本，低版本需要升级
2. [root@k8smaster kubesphere]# kubectl version

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安装

1. [root@k8smaster ~]# cd /opt/k8s/kubesphere
2. # 创建文件storageclass.yaml
3. [root@k8smaster kubesphere]# vi storageclass.yaml
4. kind: StorageClass
5. apiVersion: storage.k8s.io/v1
6. metadata:
7.   name: local-storage
8. provisioner: kubernetes.io/no-provisioner
9. volumeBindingMode: WaitForFirstConsumer
11. # persistentVolumeClaim.yaml
12. [root@k8smaster kubesphere]# vi persistentVolumeClaim.yaml
13. apiVersion: v1
14. kind: PersistentVolumeClaim
15. metadata:
16.   name: local-pve
17. spec:
18.   accessModes:
19.      - ReadWriteOnce
20.   resources:
21.     requests:
22.       storage: 20Gi
23.   storageClassName: local-storage
25. # 下载核心文件（可以讯雷下载好传到 服务器）
26. [root@k8smaster kubesphere]# wget https://github.com/kubesphere/ks-installer/releases/download/v3.1.1/kubesphere-installer.yaml
27. [root@k8smaster kubesphere]# wget https://github.com/kubesphere/ks-installer/releases/download/v3.1.1/cluster-configuration.yaml
28. [root@k8smaster kubesphere]# ll
29. 总用量 12
30. -rwxrwxrwx 1 root root 7663 4月  23 09:41 cluster-configuration.yaml
31. -rwxrwxrwx 1 root root 4064 4月  23 09:41 kubesphere-installer.yaml
33. # 安装
34. [root@k8smaster kubesphere]# kubectl apply -f storageclass.yaml
35. storageclass.storage.k8s.io/local-storage created
36. [root@k8smaster kubesphere]# kubectl apply -f persistentVolumeClaim.yaml
37. persistentvolumeclaim/local-pve created
39. [root@k8smaster kubesphere]# kubectl apply -f kubesphere-installer.yaml
40. customresourcedefinition.apiextensions.k8s.io/clusterconfigurations.installer.kubesphere.io created
41. namespace/kubesphere-system created
42. serviceaccount/ks-installer created
43. clusterrole.rbac.authorization.k8s.io/ks-installer created
44. clusterrolebinding.rbac.authorization.k8s.io/ks-installer created
45. deployment.apps/ks-installer created
47. [root@k8smaster kubesphere]# kubectl apply -f cluster-configuration.yaml
48. clusterconfiguration.installer.kubesphere.io/ks-installer created
50. #解决找不到证书的问题
51. [root@k8smaster kubesphere]# kubectl -n kubesphere-system create secret generic kube-etcd-client-certs  --from-file=etcd-client-ca.crt=/etc/kubernetes/pki/etcd/ca.crt  --from-file=etcd-client.crt=/etc/kubernetes/pki/apiserver-etcd-client.crt  --from-file=etcd-client.key=/etc/kubernetes/pki/apiserver-etcd-client.key
52. secret/kube-etcd-client-certs created
55. # 查看 POD 详情
56. [root@k8smaster kubesphere]# kubectl describe pod -n kubesphere-system
57. Events:
58.   Type    Reason     Age   From               Message
59.   ----    ------     ----  ----               -------
60.   Normal  Scheduled  12m   default-scheduler  Successfully assigned kubesphere-system/ks-installer-7bd6b699df-9lnlc to k8snode1
61.   Normal  Pulling    12m   kubelet            Pulling image "kubesphere/ks-installer:v3.1.1"
62.   Normal  Pulled     11m   kubelet            Successfully pulled image "kubesphere/ks-installer:v3.1.1"
63.   Normal  Created    11m   kubelet            Created container installer
64.   Normal  Started    11m   kubelet            Started container installer
65. [root@k8smaster kubesphere]#
67. # 使用命令查看进度
68. [root@k8smaster kubesphere]# kubectl logs -n kubesphere-system $(kubectl get pod -n kubesphere-system -l app=ks-install -o jsonpath='{.items[0].metadata.name}') -f

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如果出现下面错误，需要安装 storageclass、persistentVolumeClaim

1. TASK [preinstall : KubeSphere | Stopping if default StorageClass was not found] ***
2. fatal: [localhost]: FAILED! => {
3.     "assertion": ""(default)" in default_storage_class_check.stdout",
4.     "changed": false,
5.     "evaluated_to": false,
6.     "msg": "Default StorageClass was not found !"
7. }

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1. # 删除
2. [root@k8smaster kubesphere]# kubectl delete -f kubesphere-installer.yaml
3. [root@k8smaster kubesphere]# kubectl delete -f cluster-configuration.yaml
4. # 安装完 storageclass  后，重新安装
5. [root@k8smaster kubesphere]# kubectl apply -f storageclass.yaml
6. [root@k8smaster kubesphere]# kubectl apply -f persistentVolumeClaim.yaml
7. [root@k8smaster kubesphere]# kubectl apply -f kubesphere-installer.yaml
8. [root@k8smaster kubesphere]# kubectl apply -f cluster-configuration.yaml

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