SHELL编程实战K8S 1.20.4 部署脚本

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#!/bin/bash #2024年1月12日20:34:56 #auto install kubernetes 1.20.4 #by author www.jfedu.net ################## #设置变量 MASTER_IP=10.0.12.13 K8S_VERSION=1.20.4 FLANNEL_VERSION=0.14.0 #关闭防火墙和selinux systemctl stop firewalld systemctl disable firewalld setenforce 0 sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config #修改主机名 hostnamectl set-hostname k8s-master #添加Kubernetes阿里源 cat > /etc/yum.repos.d/kubernetes.repo << EOF [kubernetes] name=Kubernetes baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/ enabled=1 gpgcheck=0 EOF #添加Docker阿里源; wget  -P /etc/yum.repos.d/ http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo #安装Docker-CE版本; yum install docker-ce* -y #查Docker版本是否安装; rpm -qa|grep -E "docker" #安装 docker、kubelet、kubeadm yum install -y kubelet-${K8S_VERSION} kubeadm-${K8S_VERSION} kubectl-${K8S_VERSION} --disableexcludes=kubernetes #启动kubelet服务 systemctl enable kubelet systemctl start kubelet #初始化 kubeadm kubeadm init --kubernetes-version=v1.20.4 --pod-network-cidr=10.244.0.0/16 #设置 kubeconfig mkdir -p $HOME/.kube cp -i /etc/kubernetes/admin.conf $HOME/.kube/config chown $(id -u).$(id -g) $HOME/.kube/config #安装 flannel 网络插件 kubectl apply -f https://raw.githubusercontent.co ... on/kube-flannel.yml #部署 dashboard kubectl apply -f https://raw.githubusercontent.co ... oy/recommended.yaml #创建 dashboard 用户 cat > dashboard-admin.yaml << EOF apiVersion: v1 kind: ServiceAccount metadata:   name: admin-user   namespace: kubernetes-dashboard EOF kubectl apply -f dashboard-admin.yaml cat > dashboard-admin-rolebinding.yaml << EOF apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata:   name: admin-user roleRef:   apiGroup: rbac.authorization.k8s.io   kind: ClusterRole   name: cluster-admin subjects: - kind: ServiceAccount   name: admin-user   namespace: kubernetes-dashboard EOF kubectl apply -f dashboard-admin-rolebinding.yaml #获取 dashboard 登录 token kubectl -n kubernetes-dashboard describe secret $(kubectl -n kubernetes-dashboard get secret | grep admin-user | awk '{print $1}') #输出 dashboard URL echo "Dashboard URL: https://10.0.12.13:31001"