202 lines
8.4 KiB
Bash
202 lines
8.4 KiB
Bash
#!/bin/bash
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set -euo pipefail
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# ========================== 固定配置 ==========================
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TEMPLATE_URL="http://116.205.97.109/scripts/kubeadm-conf.yaml" # 固定模板地址
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LOCAL_TEMPLATE="/tmp/k8s-template-$(date +%s).yaml" # 本地临时模板
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REMOTE_CONFIG_PATH="/opt/k8s-install-conf/kubeadm-conf.yaml" # 远程配置路径
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REMOTE_USER="root" # 默认远程用户
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# pause镜像相关配置
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PAUSE_ALI_REGISTRY="registry.cn-hangzhou.aliyuncs.com/google_containers/pause" # 阿里云pause镜像
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PAUSE_TARGET_REGISTRY="registry.k8s.io/pause" # 目标pause镜像（替换后）
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# ========================== 工具函数 ==========================
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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NC='\033[0m'
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info() { echo -e "${YELLOW}[INFO]${NC} $1"; }
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success() { echo -e "${GREEN}[SUCCESS]${NC} $1"; }
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error() { echo -e "${RED}[ERROR]${NC} $1"; exit 1; }
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# ========================== 参数解析（简化版） ==========================
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# 核心变量（target-ip = local-ip）
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LOCALIP="" # 节点IP（同时作为目标服务器IP）
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HOSTNAME="" # 节点主机名
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MASTER1_IP="" # 第1个MASTER01_IP替换值
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MASTER2_IP="" # 第2个MASTER01_IP替换值
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MASTER3_IP="" # 第3个MASTER01_IP替换值
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CLUSTER_VIP="" # 集群VIP
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K8SVERSION="" # K8s版本
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CLUSTER_PORT="" # API端口
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parse_args() {
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while [[ $# -gt 0 ]]; do
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case "$1" in
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--local-ip)
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LOCALIP="$2"
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shift 2
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;;
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--hostname)
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HOSTNAME="$2"
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shift 2
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;;
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--master1-ip)
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MASTER1_IP="$2"
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shift 2
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;;
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--master2-ip)
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MASTER2_IP="$2"
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shift 2
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;;
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--master3-ip)
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MASTER3_IP="$2"
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shift 2
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;;
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--cluster-vip)
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CLUSTER_VIP="$2"
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shift 2
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;;
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--k8s-version)
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K8SVERSION="$2"
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shift 2
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;;
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--cluster-port)
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CLUSTER_PORT="$2"
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shift 2
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;;
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--remote-user)
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REMOTE_USER="$2"
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shift 2
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;;
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--help)
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echo "用法：$0 [必选参数] [可选参数]"
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echo "功能：下载模板→替换变量→拷贝到服务器→拉取镜像→自动打pause镜像标签"
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echo "必选参数："
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echo " --local-ip <IP> 节点IP（目标服务器IP）| --hostname <名称> 节点主机名"
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echo " --master1-ip <IP> 第1个MASTER01_IP | --master2-ip <IP> 第2个MASTER01_IP | --master3-ip <IP> 第3个MASTER01_IP"
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echo " --cluster-vip <IP> 集群VIP | --k8s-version <版本> K8s版本 | --cluster-port <端口> API端口"
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echo "可选参数：--remote-user <用户> 远程登录用户（默认root）"
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echo "示例："
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echo " $0 --local-ip 192.168.61.10 --hostname master-01 \\"
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echo " --master1-ip 192.168.61.10 --master2-ip 192.168.61.11 --master3-ip 192.168.61.12 \\"
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echo " --cluster-vip 192.168.61.200 --k8s-version 1.30.5 --cluster-port 6443"
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exit 0
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;;
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*)
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error "未知参数：$1（执行$0 --help查看用法）"
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;;
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esac
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done
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# 校验必选参数
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local required_params=("LOCALIP" "HOSTNAME" "MASTER1_IP" "MASTER2_IP" "MASTER3_IP" "CLUSTER_VIP" "K8SVERSION" "CLUSTER_PORT")
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for param in "${required_params[@]}"; do
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[[ -z "${!param}" ]] && error "缺少必选参数：--${param,,}"
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done
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# 校验格式
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[[ ! "$LOCALIP" =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]] && error "无效local-ip：$LOCALIP"
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[[ ! "$CLUSTER_PORT" =~ ^[0-9]+$ || "$CLUSTER_PORT" -lt 1 || "$CLUSTER_PORT" -gt 65535 ]] && error "无效端口：$CLUSTER_PORT"
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}
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# ========================== 核心步骤 ==========================
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# 步骤1：下载模板
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download_template() {
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info "下载模板：$TEMPLATE_URL"
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command -v wget &>/dev/null && wget -q -O "$LOCAL_TEMPLATE" "$TEMPLATE_URL" || \
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command -v curl &>/dev/null && curl -s -o "$LOCAL_TEMPLATE" "$TEMPLATE_URL" || \
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error "请安装wget或curl"
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[[ -f "$LOCAL_TEMPLATE" ]] || error "模板下载失败"
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success "模板下载完成"
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}
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# 步骤2：替换模板变量
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replace_variables() {
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info "替换模板变量..."
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# 基础变量
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sed -i "s/LOCALIP/$LOCALIP/g; s/HOSTNAME/$HOSTNAME/g; s/K8SVERSION/$K8SVERSION/g" "$LOCAL_TEMPLATE"
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sed -i "s/CLUSTER_VIP/$CLUSTER_VIP/g; s/CLUSTER_PORT/$CLUSTER_PORT/g" "$LOCAL_TEMPLATE"
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# 3个MASTER01_IP按顺序替换
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sed -i "0,/MASTER01_IP/s/MASTER01_IP/$MASTER1_IP/; 0,/MASTER01_IP/s/MASTER01_IP/$MASTER2_IP/; 0,/MASTER01_IP/s/MASTER01_IP/$MASTER3_IP/" "$LOCAL_TEMPLATE"
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# 替换CLUSTER_VIP:CLUSTER_PORT
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sed -i "s/CLUSTER_VIP:CLUSTER_PORT/${CLUSTER_VIP}:${CLUSTER_PORT}/g" "$LOCAL_TEMPLATE"
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success "变量替换完成"
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}
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# 步骤3：拷贝到目标服务器
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copy_to_remote() {
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info "拷贝文件到 $REMOTE_USER@$LOCALIP:$REMOTE_CONFIG_PATH"
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# 远程创建目录
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ssh -o StrictHostKeyChecking=no "$REMOTE_USER@$LOCALIP" "mkdir -p $(dirname "$REMOTE_CONFIG_PATH")" || error "远程目录创建失败"
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# SCP传输
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scp -o StrictHostKeyChecking=no "$LOCAL_TEMPLATE" "$REMOTE_USER@$LOCALIP:$REMOTE_CONFIG_PATH" || error "文件传输失败"
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# 校验
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ssh "$REMOTE_USER@$LOCALIP" "test -f $REMOTE_CONFIG_PATH" || error "远程文件不存在"
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success "文件拷贝成功"
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}
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# 步骤4：远程执行命令（拉取镜像 + 自动打pause标签）
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execute_remote_commands() {
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info "在 $LOCALIP 执行远程操作..."
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# 子步骤1：拉取K8s镜像（含pause镜像）
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info "拉取K8s镜像：kubeadm config images pull --config $REMOTE_CONFIG_PATH"
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ssh "$REMOTE_USER@$LOCALIP" "kubeadm config images pull --config $REMOTE_CONFIG_PATH" || error "镜像拉取失败"
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success "K8s镜像拉取完成"
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# 子步骤2：获取阿里云pause镜像版本（核心逻辑）
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info "获取阿里云pause镜像版本：$PAUSE_ALI_REGISTRY"
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# 命令说明：列出k8s.io命名空间的镜像 → 过滤阿里云pause → 提取版本号（格式：镜像名:版本 → 取:后的内容）
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local pause_version
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pause_version=$(ssh "$REMOTE_USER@$LOCALIP" "nerdctl -n k8s.io images --format '{{.Repository}}:{{.Tag}}' | grep '$PAUSE_ALI_REGISTRY' | awk -F: '{print \$2}' | head -n1")
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# 校验版本是否获取到
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if [[ -z "$pause_version" ]]; then
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error "未找到阿里云pause镜像（$PAUSE_ALI_REGISTRY），请检查镜像拉取是否成功"
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fi
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success "获取到pause镜像版本：$pause_version"
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# 子步骤3：执行nerdctl tag命令（替换仓库地址）
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local ali_pause_full="${PAUSE_ALI_REGISTRY}:${pause_version}"
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local target_pause_full="${PAUSE_TARGET_REGISTRY}:${pause_version}"
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info "执行打标签命令：nerdctl -n k8s.io tag $ali_pause_full $target_pause_full"
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ssh "$REMOTE_USER@$LOCALIP" "nerdctl -n k8s.io tag $ali_pause_full $target_pause_full" || error "pause镜像打标签失败"
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success "pause镜像标签创建完成（$target_pause_full）"
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# 子步骤4：验证标签是否创建成功
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ssh "$REMOTE_USER@$LOCALIP" "nerdctl -n k8s.io images | grep '$PAUSE_TARGET_REGISTRY:$pause_version'" &>/dev/null || \
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error "标签验证失败，未找到 $PAUSE_TARGET_REGISTRY:$pause_version"
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success "pause镜像标签验证成功"
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}
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# 步骤5：清理本地临时文件
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cleanup() {
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info "清理本地临时文件：$LOCAL_TEMPLATE"
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rm -f "$LOCAL_TEMPLATE" || info "本地文件清理失败，可手动删除"
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}
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# ========================== 主流程 ==========================
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main() {
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parse_args "$@"
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download_template
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replace_variables
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copy_to_remote
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execute_remote_commands # 包含pause打标签逻辑
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cleanup
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echo -e "\n${GREEN}========================================"
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echo -e "全流程完成！目标服务器：$LOCALIP"
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echo -e "已完成：1. 模板部署 2. 镜像拉取 3. pause镜像标签替换"
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echo -e "下一步：执行 kubeadm init --config $REMOTE_CONFIG_PATH（主节点）或 join命令（从节点）"
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echo -e "========================================"
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}
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main "$@" |