2025-10-09 23:37:29 +08:00
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# 配置各节点的IP地址和主机名映射
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k8s-master: 192.168.31.11/24
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k8s-node-01: 192.168.31.12/24
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k8s-node-02: 192.168.31.13/24
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2025-10-09 23:40:05 +08:00
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2025-10-09 23:37:29 +08:00
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# 设置主机名为 k8s-master
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hostnamectl set-hostname k8s-master
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hostnamectl set-hostname k8s-node-01
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hostnamectl set-hostname k8s-node-02
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# 修改host文件
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echo "192.168.31.11 k8s-master km" >> /etc/hosts
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echo "192.168.31.12 k8s-node-01 kn1" >> /etc/hosts
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echo "192.168.31.13 k8s-node-02 kn2" >> /etc/hosts
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# 关闭防火墙
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systemctl disable firewalld --now
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# 关闭SELinux
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setenforce 0
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sed -i 's/^SELINUX=enforcing$/SELINUX=disabled/' /etc/selinux/config
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# 关闭交换分区
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swapoff -a
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sed -i '/swap/d' /etc/fstab # 永久关闭交换分区
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## 配置内核参数，开启 IP 转发和网桥过滤
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# 创建配置文件
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sudo tee /etc/modules-load.d/k8s.conf <<EOF
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overlay
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br_netfilter
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EOF
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# 加载模块
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sudo modprobe overlay
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sudo modprobe br_netfilter
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# 设置内核参数
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sudo tee /etc/sysctl.d/k8s.conf <<EOF
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net.bridge.bridge-nf-call-iptables = 1
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net.bridge.bridge-nf-call-ip6tables = 1
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net.ipv4.ip_forward = 1
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EOF
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# 应用内核参数
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sudo sysctl --system
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# 查看内核参数
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sysctl net.bridge.bridge-nf-call-iptables
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## 配置时间同步
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# 安装 chrony 时间同步服务
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dnf install -y chrony
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# 启动并设置 chrony 开机自启
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systemctl enable --now chronyd
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# 查看时间同步状态，确保有 NTP 源并且时间已同步
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chronyc sources
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# 配置 SSH 免密登录
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# 在 master 节点上生成 SSH 密钥对
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ssh-keygen -t rsa -N "" -f ~/.ssh/id_rsa
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# 将公钥复制到所有节点，包括 master 自己
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ssh-copy-id -i ~/.ssh/id_rsa.pub root@k8s-master
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ssh-copy-id -i ~/.ssh/id_rsa.pub root@k8s-node-01
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ssh-copy-id -i ~/.ssh/id_rsa.pub root@k8s-node-02
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# 重启服务器
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reboot
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