KUBERSPHERE安装

注：

在k8s搭建完成的基础上安装最小化kubesphere

环境：centos7x3
k8s-master	192.168.10.101	2核5G
k8s-node1	192.168.10.102	2核2G
k8s-node2	192.168.10.103	2核2G

kubeadmin安装kubernetes移步阿良大佬的教程
基于kubeadmin搭建，master内存尽量给到7-8个G（我这里环境不允许，期间出现过多次蓝屏）

由于部分包被墙，搭建过程中可能会有许多包拉不下来，建议爬个梯子过去，或者本地翻过去之后给虚拟机做转发

在yum源存在的情况下
yum -y install openvpn
后台运行
openvpn --daemon --config *.openvpn

出现什么什么successfully什么什么completely就ok了

一、安装helm

1.地址 https://helm.sh/docs/intro/install/

wget https://get.helm.sh/helm-v3.3.4-linux-amd64.tar.gz
 
tart -zxvf helm-v3.3.4-linux-amd64.tar.gz
 
mv linux-amd64/helm /usr/local/bin/helm
 
helm version
version.BuildInfo{Version:"v3.3.4", GitCommit:"a61ce5633af99708171414353ed49547cf05013d", GitTreeState:"clean", GoVersion:"go1.14.9"}

2.命令补全

vim ~/.bashrc

source <(helm completion bash)

source ~/.bashrc

3.添加常用仓库

$ helm repo add stable https://kubernetes-charts.storage.googleapis.com/
$ helm repo add bitnami https://charts.bitnami.com/bitnami
$ helm repo add incubator https://kubernetes-charts-incubator.storage.googleapis.com/
$ helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
$ helm repo update # Make sure we get the latest list of charts
$ helm repo add ali-stable    https://kubernetes.oss-cn-hangzhou.aliyuncs.com/charts  #阿里云

helm repo list

NAME            URL                                                       
ingress-nginx   https://kubernetes.github.io/ingress-nginx                
stable          https://kubernetes-charts.storage.googleapis.com/         
bitnami         https://charts.bitnami.com/bitnami                        
incubator       https://kubernetes-charts-incubator.storage.googleapis.com/

4.配置权限

权限
kubectl apply -f helm-rbac.yaml

apiVersion: v1
kind: ServiceAccount
metadata:
  name: tiller
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: tiller
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
  - kind: ServiceAccount
    name: tiller
    namespace: kube-system

二、安装openebs创建storageclass持久化存储

可移步大佬用nfs做持久化存储案例来了解持久化存储

kubectl get node -o wide
去除污点
kubectl describe node master | grep Taint
去除master的污点
kubectl taint nodes master node-role.kubernetes.io/master:NoSchedule-

安装OpenEBS
A:若集群已安装了 Helm，可通过 Helm 命令来安装 OpenEBS：
kubectl create ns openebs
helm install --namespace openebs --name openebs stable/openebs --version 1.5.0
B:除此之外 还可以通过 kubectl 命令安装：
kubectl apply -f https://openebs.github.io/charts/openebs-operator-1.5.0.yaml

验证
kubectl get sc
如下将 openebs-hostpath设置为 默认的 StorageClass
kubectl patch storageclass openebs-hostpath -p '{"metadata": {"annotations":{"storageclass.kubernetes.io/is-default-class":"true"}}}'

验证
kubectl get sc

三、最小化安装kubesphere

参考官网

1.执行以下命令：

kubectl apply -f https://github.com/kubesphere/ks-installer/releases/download/v3.1.0/kubesphere-installer.yaml
   
kubectl apply -f https://github.com/kubesphere/ks-installer/releases/download/v3.1.0/cluster-configuration.yaml

2.检查安装日志：

kubectl logs -n kubesphere-system $(kubectl get pod -n kubesphere-system -l app=ks-install -o jsonpath='{.items[0].metadata.name}') -f

3.使用kubectl get pod –all-namespaces，看看是否所有的豆荚，在KubeSphere相关的命名空间运行正常。如果是，请30880通过以下命令检查控制台的端口（默认情况下）：

kubectl get svc/ks-console -n kubesphere-system

4.查看kubusphere组件

kubectl get pod -n kubesphere-monitoring-system

5.登录kubesphere控制台

Console: http://192.168.10.103:30880
Account: admin
Password: P@88w0rd