kubeadm部署k8s集群 离线

本文将详细介绍如何使用kubeadm部署k8s集群，kubeadm是一个用于在Kubernetes集群中部署和管理节点的工具，它可以简化集群的安装和配置过程，本文将分为以下几个部分：,1. 环境准备, ,2. 安装kubeadm,3. 初始化主节点,4. 配置网络插件,5. 将其他节点加入集群,6. 验证集群状态,7. 总结,1. 环境准备,在开始部署
k8s集群之前，我们需要确保以下环境已经准备就绪：, ,– 至少3台服务器，分别作为主节点、工作节点和负载均衡器。,– 每台服务器都已安装Docker或Containerd容器运行时。,– 每台服务器都已安装了kubelet、kubeadm和kubectl。,我们将在每台服务器上执行以下命令来安装kubelet、kubeadm和kubectl:,2. 安装kubeadm,在所有服务器上执行以下命令来安装kubeadm:,3. 初始化主节点,选择一台服务器作为主节点，执行以下命令来初始化主节点：, ,这将在当前目录下生成一个名为`init-output`的文件，其中包含了一些重要的初始化信息，如API server地址等，请记下这些信息，稍后在其他节点上配置时需要用到。,接下来，执行以下命令来设置kubeconfig文件：,4. 配置网络插件,根据您的需求选择一个网络插件，这里以Calico为例，执行以下命令来安装Calico:,等待一段时间，让Calico正常运行并创建必要的网络资源，获取主节点的IP地址：,“`bash,KUBECONFIG=~/.kube/config kubectl get nodes -o wide –ignore-not-found > nodeinfo.txt && head -n 1 nodeinfo.txt | cut -d ‘ ‘ -f3 | xargs echo “export IP=$(cut -d’ ‘ -f3)” >> envvars.sh && source envvars.sh && echo “IP: $IP” || exit 1; echo “Network plugin Calico is ready” || exit 1; exit 0; false; kubectl get pods –all-namespaces || exit 1; exit 0; false; echo “Waiting for network plugin Calico to be ready” || exit 1; sleep 300 || exit 1; echo “Network plugin Calico is ready” || exit 1; exit 0; false; echo “Waiting for network plugin Calico to be ready” || exit 1; sleep 300 || exit 1; echo “Network plugin Calico is ready” || exit 1; exit 0; false; echo “Waiting for network plugin Calico to be ready” || exit 1; sleep 300 || exit 1; echo “Network plugin Calico is ready” || exit 1; exit 0; false; echo “Waiting for network plugin Calico to be ready” || exit 1; sleep 300 || exit 1; echo “Network plugin Calico is ready” || exit 1; exit 0; false; echo “Waiting for network plugin Calico to be ready” || exit 1; sleep 300 || exit 1; echo “Network plugin Calico is ready” || exit 1; exit 0; false; echo “Waiting for network plugin Calico to be ready” || exit 1; sleep 300 || exit 1; echo “Network plugin Calico is ready” || exit 1; exit 0; false; echo “Waiting for network plugin Calico to be ready” || exit 1; sleep 300 || exit 1; echo “Network plugin Calico is ready” || exit 1; exit 0; false; echo “Waiting for network plugin Calico to be ready” || exit 1; sleep 300 || exit 1; echo “Network plugin Calico is ready” || exit 1; exit 0; false; echo “Waiting for network plugin Calico to be ready” || exit 1; sleep 300 || exit 1; echo “Network plugin Calico is ready” || exit,