341 lines
15 KiB
Bash
341 lines
15 KiB
Bash
#!/bin/bash
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set -euo pipefail
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# ========================== 全局配置与工具函数 ==========================
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# 颜色定义
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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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BLUE='\033[0;34m'
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NC='\033[0m'
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# 打印函数
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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} $1"; exit 1; }
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step() { echo -e "\n${BLUE}===== $1 =====${NC}"; }
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# 固定路径（可根据实际调整）
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KUBEADM_CONF="/opt/k8s-install-conf/kubeadm-conf.yaml" # Master1的kubeadm配置文件
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INIT_RESULT_FILE="/opt/k8s-install-conf/kubeadm-init-result.txt" # 初始化结果保存文件
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# 关键修改1：Calico v3.25官方YAML地址（替换原v3.26）
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CALICO_YAML_OFFICIAL="https://docs.projectcalico.org/v3.25/manifests/calico.yaml"
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# 本地临时Calico YAML路径（用于镜像替换）
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LOCAL_CALICO_YAML="/tmp/calico-v3.25-modified.yaml"
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# 关键修改2：华为云SWR镜像前缀（替换原docker.io/calico）
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SWR_CALICO_PREFIX="swr.cn-north-4.myhuaweicloud.com/ddn-k8s/docker.io/calico"
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REMOTE_USER="root" # 远程节点登录用户
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# ========================== 参数解析（核心：指定Master/Node IP） ==========================
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# 初始化参数
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MASTER_IPS=() # 3个Master节点IP（顺序：Master1, Master2, Master3）
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NODE_IPS=() # Node节点IP列表（支持多个，用逗号分隔）
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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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--master-ips)
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# 解析3个Master IP（格式："192.168.61.10,192.168.61.11,192.168.61.12"）
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IFS=',' read -ra IPS <<< "$2"
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if [[ ${#IPS[@]} -ne 3 ]]; then
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error "--master-ips必须包含3个IP（逗号分隔），当前提供${#IPS[@]}个"
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fi
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MASTER_IPS=("${IPS[@]}")
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shift 2
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;;
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--node-ips)
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# 解析Node IP列表（格式："192.168.61.20,192.168.61.21"）
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IFS=',' read -ra IPS <<< "$2"
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NODE_IPS=("${IPS[@]}")
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shift 2
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;;
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--help)
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echo "用法：$0 --master-ips <IP1,IP2,IP3> [--node-ips <IP1,IP2,...>]"
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echo "功能：Master1初始化→远程Master/Node加入→Calico(v3.25+华为云SWR)部署"
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echo "参数说明："
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echo " --master-ips 必选，3个Master节点IP（顺序：Master1(初始化节点), Master2, Master3）"
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echo " --node-ips 可选，Node节点IP列表（逗号分隔，如不指定则仅部署Master集群）"
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echo "示例："
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echo " $0 --master-ips 192.168.61.10,192.168.61.11,192.168.61.12 --node-ips 192.168.61.20,192.168.61.21"
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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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if [[ ${#MASTER_IPS[@]} -eq 0 ]]; then
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error "缺少必选参数--master-ips（需指定3个Master节点IP）"
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fi
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# 提取Master1 IP（初始化节点）
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export MASTER1_IP="${MASTER_IPS[0]}"
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export MASTER2_IP="${MASTER_IPS[1]}"
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export MASTER3_IP="${MASTER_IPS[2]}"
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info "已识别节点："
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info "Master1（初始化）：$MASTER1_IP"
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info "Master2：$MASTER2_IP"
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info "Master3：$MASTER3_IP"
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[[ ${#NODE_IPS[@]} -gt 0 ]] && info "Node节点：${NODE_IPS[*]}" || info "未指定Node节点，仅部署Master集群"
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}
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# ========================== 步骤1：Master1初始化（核心） ==========================
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init_master1() {
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step "Step 1：Master1节点初始化（$MASTER1_IP）"
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# 检查Master1的kubeadm配置文件是否存在
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if ! ssh "$REMOTE_USER@$MASTER1_IP" "test -f $KUBEADM_CONF"; then
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error "Master1的kubeadm配置文件不存在：$MASTER1_IP:$KUBEADM_CONF（请先执行配置分发脚本）"
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fi
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# 执行kubeadm init（带证书上传，支持其他Master加入）
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info "执行初始化命令：kubeadm init --upload-certs --config $KUBEADM_CONF"
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info "初始化结果将保存到：$INIT_RESULT_FILE"
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# 远程执行初始化，同时保存输出到本地文件
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ssh "$REMOTE_USER@$MASTER1_IP" "kubeadm init --upload-certs --config $KUBEADM_CONF 2>&1" | tee "$INIT_RESULT_FILE"
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local init_exit_code=${PIPESTATUS[0]} # 获取远程命令退出码
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if [[ $init_exit_code -ne 0 ]]; then
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error "Master1初始化失败！查看详情：cat $INIT_RESULT_FILE"
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fi
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success "Master1初始化完成，结果已保存到：$INIT_RESULT_FILE"
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info "初始化输出预览（前20行）："
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head -n 20 "$INIT_RESULT_FILE"
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}
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# ========================== 步骤2：Master1配置kubeconfig ==========================
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config_master1_kubeconfig() {
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step "Step 2：配置Master1的kubeconfig"
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# 远程执行kubeconfig配置命令
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local kube_cmds=(
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"mkdir -p \$HOME/.kube"
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"cp -i /etc/kubernetes/admin.conf \$HOME/.kube/config"
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"chown \$(id -u):\$(id -g) \$HOME/.kube/config"
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"echo 'export KUBECONFIG=/etc/kubernetes/admin.conf' >> ~/.bash_profile"
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"source ~/.bash_profile"
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)
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for cmd in "${kube_cmds[@]}"; do
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info "在Master1执行：$cmd"
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ssh "$REMOTE_USER@$MASTER1_IP" "$cmd" || error "执行命令失败：$cmd"
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done
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# 验证kubectl是否可用
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info "验证kubectl：在Master1执行 kubectl get nodes"
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ssh "$REMOTE_USER@$MASTER1_IP" "kubectl get nodes" || error "kubectl配置失败，无法获取节点信息"
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success "Master1 kubeconfig配置完成"
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}
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# ========================== 步骤3：提取join命令（从初始化结果中） ==========================
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extract_join_commands() {
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step "Step 3：从初始化结果中提取join命令"
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# 检查结果文件是否存在
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[[ -f "$INIT_RESULT_FILE" ]] || error "初始化结果文件不存在：$INIT_RESULT_FILE"
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# 1. 提取Master节点join命令（含--control-plane和--certificate-key）
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info "提取Master节点join命令"
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local master_join_cmd
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master_join_cmd=$(grep -A 3 "You can now join any number of control-plane nodes by running the following command on each as root" "$INIT_RESULT_FILE" | grep -v "You can now" | tr -d '\n' | sed 's/ */ /g')
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[[ -z "$master_join_cmd" ]] && error "未从初始化结果中提取到Master join命令"
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# 补充--config参数（其他Master也需用自己的配置文件）
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master_join_cmd="$master_join_cmd --config $KUBEADM_CONF"
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export MASTER_JOIN_CMD="$master_join_cmd"
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success "Master join命令提取完成："
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echo -e "${YELLOW}${MASTER_JOIN_CMD}${NC}"
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# 2. 提取Node节点join命令
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info "提取Node节点join命令"
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local node_join_cmd
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node_join_cmd=$(grep -A 2 "Then you can join any number of worker nodes by running the following on each as root" "$INIT_RESULT_FILE" | grep -v "Then you can" | tr -d '\n' | sed 's/ */ /g')
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[[ -z "$node_join_cmd" ]] && error "未从初始化结果中提取到Node join命令"
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export NODE_JOIN_CMD="$node_join_cmd"
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success "Node join命令提取完成："
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echo -e "${YELLOW}${NODE_JOIN_CMD}${NC}"
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}
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# ========================== 步骤4：远程其他Master节点加入 ==========================
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join_other_masters() {
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step "Step 4：远程Master2（$MASTER2_IP）和Master3（$MASTER3_IP）加入集群"
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# 定义要加入的Master节点列表（排除Master1）
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local other_masters=("$MASTER2_IP" "$MASTER3_IP")
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for master_ip in "${other_masters[@]}"; do
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info "处理Master节点：$master_ip"
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# 检查该Master的kubeadm配置文件是否存在
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if ! ssh "$REMOTE_USER@$master_ip" "test -f $KUBEADM_CONF"; then
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error "Master $master_ip的kubeconfig配置文件不存在：$KUBEADM_CONF"
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fi
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# 远程执行join命令
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info "在$master_ip执行join命令：$MASTER_JOIN_CMD"
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ssh "$REMOTE_USER@$master_ip" "$MASTER_JOIN_CMD" || error "Master $master_ip加入失败"
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# 配置该Master的kubeconfig（否则无法本地执行kubectl）
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info "配置$master_ip的kubeconfig"
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ssh "$REMOTE_USER@$master_ip" "mkdir -p \$HOME/.kube && cp -i /etc/kubernetes/admin.conf \$HOME/.kube/config && chown \$(id -u):\$(id -g) \$HOME/.kube/config"
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success "Master $master_ip加入集群并配置完成"
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done
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# 验证所有Master节点状态
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info "验证所有Master节点状态（从Master1执行）"
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ssh "$REMOTE_USER@$MASTER1_IP" "kubectl get nodes | grep master" || error "Master节点状态验证失败"
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success "所有Master节点加入完成"
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}
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# ========================== 步骤5：远程Node节点加入（可选） ==========================
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join_nodes() {
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if [[ ${#NODE_IPS[@]} -eq 0 ]]; then
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info "未指定Node节点，跳过Node加入步骤"
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return
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fi
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step "Step 5：远程Node节点加入集群（共${#NODE_IPS[@]}个）"
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for node_ip in "${NODE_IPS[@]}"; do
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info "处理Node节点：$node_ip"
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# 检查Node节点是否已安装基础组件（kubeadm、kubelet、containerd）
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if ! ssh "$REMOTE_USER@$node_ip" "command -v kubeadm &>/dev/null && command -v kubelet &>/dev/null && systemctl is-active --quiet containerd"; then
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error "Node $node_ip未安装基础组件（需先安装kubeadm、kubelet、containerd）"
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fi
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# 远程执行Node join命令
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info "在$node_ip执行join命令：$NODE_JOIN_CMD"
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ssh "$REMOTE_USER@$node_ip" "$NODE_JOIN_CMD" || error "Node $node_ip加入失败"
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success "Node $node_ip加入集群完成"
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done
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# 验证所有节点状态
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info "验证所有节点状态（从Master1执行）"
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ssh "$REMOTE_USER@$MASTER1_IP" "kubectl get nodes" || error "节点状态验证失败"
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success "所有Node节点加入完成"
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}
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# ========================== 步骤6：部署Calico网络插件（v3.25+华为云SWR） ==========================
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deploy_calico() {
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step "Step 6：部署Calico v3.25（华为云SWR镜像）"
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# 子步骤1：下载Calico v3.25官方YAML到本地
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info "下载Calico v3.25官方YAML：$CALICO_YAML_OFFICIAL"
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if command -v wget &>/dev/null; then
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wget -q -O "$LOCAL_CALICO_YAML" "$CALICO_YAML_OFFICIAL" || error "wget下载Calico YAML失败"
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elif command -v curl &>/dev/null; then
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curl -s -o "$LOCAL_CALICO_YAML" "$CALICO_YAML_OFFICIAL" || error "curl下载Calico YAML失败"
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else
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error "请先安装wget或curl"
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fi
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[[ -f "$LOCAL_CALICO_YAML" ]] || error "Calico YAML下载失败，文件不存在"
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success "Calico YAML下载完成（本地路径：$LOCAL_CALICO_YAML）"
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# 子步骤2：替换YAML中的所有镜像地址为华为云SWR（核心修改）
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info "替换镜像地址为华为云SWR：$SWR_CALICO_PREFIX"
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# 替换3个核心镜像（cni、node、kube-controllers，均为v3.25.0版本）
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sed -i "s#docker.io/calico/cni:v3.25.0#${SWR_CALICO_PREFIX}/cni:v3.25.0#g" "$LOCAL_CALICO_YAML"
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sed -i "s#docker.io/calico/node:v3.25.0#${SWR_CALICO_PREFIX}/node:v3.25.0#g" "$LOCAL_CALICO_YAML"
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sed -i "s#docker.io/calico/kube-controllers:v3.25.0#${SWR_CALICO_PREFIX}/kube-controllers:v3.25.0#g" "$LOCAL_CALICO_YAML"
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# 验证替换结果
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info "验证镜像替换结果（查看前10行含镜像的内容）"
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grep -n "image:" "$LOCAL_CALICO_YAML" | head -n 10 || error "Calico YAML中未找到镜像配置，替换失败"
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success "Calico镜像地址替换完成"
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# 子步骤3：将修改后的YAML上传到Master1节点
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local remote_calico_yaml="/opt/k8s-install-conf/calico-v3.25-swr.yaml"
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info "上传修改后的YAML到Master1：$remote_calico_yaml"
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scp -o StrictHostKeyChecking=no "$LOCAL_CALICO_YAML" "$REMOTE_USER@$MASTER1_IP:$remote_calico_yaml" || error "YAML上传失败"
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success "YAML上传完成"
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# 子步骤4：在Master1执行Calico部署
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info "执行部署命令：kubectl apply -f $remote_calico_yaml"
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ssh "$REMOTE_USER@$MASTER1_IP" "kubectl apply -f $remote_calico_yaml" || error "Calico部署失败"
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# 子步骤5：等待Calico Pod启动（最多等待5分钟）
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info "等待Calico Pod启动（最多5分钟）..."
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local wait_time=0
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while true; do
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# 检查calico-system命名空间下所有Pod是否Running
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local pod_status
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pod_status=$(ssh "$REMOTE_USER@$MASTER1_IP" "kubectl get pods -n calico-system -o jsonpath='{.items[*].status.phase}' 2>/dev/null")
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if [[ "$pod_status" =~ ^(Running\ )*Running$ && -n "$pod_status" ]]; then
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break
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fi
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if [[ $wait_time -ge 300 ]]; then # 5分钟=300秒
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error "Calico Pod启动超时（5分钟），请手动检查：kubectl get pods -n calico-system"
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fi
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sleep 10
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wait_time=$((wait_time + 10))
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info "已等待${wait_time}秒，Calico Pod状态：$pod_status"
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done
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# 子步骤6：验证Calico状态
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info "验证Calico状态（从Master1执行）"
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ssh "$REMOTE_USER@$MASTER1_IP" "kubectl get pods -n calico-system" || error "Calico状态验证失败"
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# 额外验证网络插件是否就绪
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ssh "$REMOTE_USER@$MASTER1_IP" "kubectl get nodes -o wide | grep -E 'STATUS|Ready'" || error "节点网络未就绪"
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success "Calico v3.25（华为云SWR）部署完成，集群网络已就绪"
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# 子步骤7：清理本地临时YAML文件
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info "清理本地临时文件：$LOCAL_CALICO_YAML"
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rm -f "$LOCAL_CALICO_YAML" || 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：串联所有步骤 ==========================
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main() {
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# 1. 解析参数
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parse_args "$@"
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# 2. 前置检查：确保SSH免密登录正常
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step "前置检查：SSH免密登录验证"
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local all_ips=("${MASTER_IPS[@]}" "${NODE_IPS[@]}")
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for ip in "${all_ips[@]}"; do
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info "验证SSH免密登录：$REMOTE_USER@$ip"
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if ! ssh -o StrictHostKeyChecking=no "$REMOTE_USER@$ip" "echo 'SSH连通正常' >/dev/null"; then
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error "SSH免密登录失败：$ip（请先执行 ssh-copy-id $REMOTE_USER@$ip 配置免密）"
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fi
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done
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success "所有节点SSH免密登录验证通过"
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# 3. 执行核心步骤
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init_master1 # Master1初始化
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config_master1_kubeconfig # Master1配置kubeconfig
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extract_join_commands # 提取join命令
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join_other_masters # 其他Master加入
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join_nodes # Node加入（可选）
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deploy_calico # 部署Calico（v3.25+SWR）
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# 4. 集群部署完成总结
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step "集群部署完成总结"
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echo -e "${GREEN}========================================"
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echo -e "K8s集群部署全流程完成！"
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echo -e "关键信息："
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echo -e " 1. Calico版本：v3.25（镜像源：华为云SWR）"
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echo -e " 2. 集群节点状态：ssh $REMOTE_USER@$MASTER1_IP 'kubectl get nodes'"
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echo -e " 3. Calico状态：ssh $REMOTE_USER@$MASTER1_IP 'kubectl get pods -n calico-system'"
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echo -e " 4. 初始化结果：$INIT_RESULT_FILE"
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echo -e "========================================"
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}
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# 启动主流程
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main "$@"
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chmod +x k8s-cluster-deploy.sh
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# 部署3个Master + 2个Node（替换为你的IP）
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#bash k8s-cluster-deploy.sh --master-ips 192.168.61.10,192.168.61.11,192.168.61.12 --node-ips 192.168.61.20,192.168.61.21
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