#!/bin/bash # ============================================================ # VPS 一键优化脚本 # 适用: Debian 12 + VLESS + WS + TLS + Cloudflare CDN # 功能: BBR / 内核参数 / 文件描述符 / Nginx / CF IP 白名单 # ============================================================ set -euo pipefail RED='\033[0;31m' GREEN='\033[0;32m' YELLOW='\033[1;33m' BLUE='\033[0;34m' CYAN='\033[0;36m' BOLD='\033[1m' NC='\033[0m' info() { echo -e "${CYAN}[INFO]${NC} $1"; } success() { echo -e "${GREEN}[OK]${NC} $1"; } warning() { echo -e "${YELLOW}[!]${NC} $1"; } error() { echo -e "${RED}[ERR]${NC} $1"; exit 1; } step() { echo -e "\n${BOLD}${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}\n${BOLD}${YELLOW} $1${NC}\n${BOLD}${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"; } # ── 记录优化结果供最终报告用 ────────────────────────────────── RESULTS=() add_result() { RESULTS+=("$1"); } # ============================================================ # 0. 前置检查 # ============================================================ check_root() { [[ $EUID -eq 0 ]] || error "请使用 root 用户运行: sudo bash vps_optimize.sh" } check_debian() { [[ -f /etc/debian_version ]] || error "此脚本仅支持 Debian / Ubuntu 系统" info "系统: $(lsb_release -d 2>/dev/null | cut -f2)" info "内核: $(uname -r)" } print_banner() { clear echo -e "${CYAN}" echo "╔══════════════════════════════════════════════════════╗" echo "║ VPS 一键优化脚本 ║" echo "║ VLESS + WS + TLS + Cloudflare CDN ║" echo "╚══════════════════════════════════════════════════════╝" echo -e "${NC}" } # ============================================================ # 1. 收集配置参数 # ============================================================ NGINX_PORT="" WS_PATH="" DOMAIN="" ENABLE_CF_WHITELIST="y" detect_existing_config() { step "🔍 检测现有配置" # 从 nginx 配置自动读取端口和路径 local nginx_conf nginx_conf=$(find /etc/nginx/sites-enabled/ -type f 2>/dev/null | xargs grep -l "proxy_pass" 2>/dev/null | head -1) if [[ -n "$nginx_conf" ]]; then local detected_port detected_path detected_domain detected_port=$(grep -E 'listen\s+[0-9]+\s+ssl' "$nginx_conf" 2>/dev/null | grep -oE '[0-9]+' | head -1) detected_path=$(grep -E 'location\s+/' "$nginx_conf" 2>/dev/null | awk '{print $2}' | head -1) detected_domain=$(grep 'server_name' "$nginx_conf" 2>/dev/null | awk '{print $2}' | tr -d ';' | head -1) [[ -n "$detected_port" ]] && NGINX_PORT="$detected_port" [[ -n "$detected_path" ]] && WS_PATH="$detected_path" [[ -n "$detected_domain" ]] && DOMAIN="$detected_domain" info "从 $nginx_conf 读取到:" [[ -n "$NGINX_PORT" ]] && info " 端口: $NGINX_PORT" [[ -n "$WS_PATH" ]] && info " 路径: $WS_PATH" [[ -n "$DOMAIN" ]] && info " 域名: $DOMAIN" else warning "未检测到现有 nginx 配置" fi } collect_params() { step "⚙️ 配置参数确认" # 端口 if [[ -z "$NGINX_PORT" ]]; then read -rp " 请输入 Nginx 对外监听端口 [默认 2053]: " input NGINX_PORT="${input:-2053}" else read -rp " 检测到端口 ${NGINX_PORT}，直接回车确认或输入新值: " input [[ -n "$input" ]] && NGINX_PORT="$input" fi # WS 路径 if [[ -z "$WS_PATH" ]]; then read -rp " 请输入 WebSocket 路径 [默认 /stickrouter]: " input WS_PATH="${input:-/stickrouter}" else read -rp " 检测到 WS 路径 ${WS_PATH}，直接回车确认或输入新值: " input [[ -n "$input" ]] && WS_PATH="$input" fi # 域名（CF 白名单需要） if [[ -z "$DOMAIN" ]]; then read -rp " 请输入域名（用于 CF 白名单，留空跳过）: " DOMAIN else read -rp " 检测到域名 ${DOMAIN}，直接回车确认或输入新值: " input [[ -n "$input" ]] && DOMAIN="$input" fi # 是否开启 CF IP 白名单 read -rp " 是否开启 Cloudflare IP 白名单限制 2053 端口? (Y/n): " input input="${input:-y}" [[ "$input" =~ ^[Nn]$ ]] && ENABLE_CF_WHITELIST="n" || ENABLE_CF_WHITELIST="y" echo "" echo -e " ${BOLD}确认配置:${NC}" echo -e " Nginx 端口 : ${GREEN}${NGINX_PORT}${NC}" echo -e " WS 路径 : ${GREEN}${WS_PATH}${NC}" echo -e " 域名 : ${GREEN}${DOMAIN:-（跳过）}${NC}" echo -e " CF 白名单 : ${GREEN}${ENABLE_CF_WHITELIST}${NC}" echo "" read -rp " 确认以上信息，按 Enter 继续，输入 n 重填: " confirm [[ "$confirm" =~ ^[Nn]$ ]] && collect_params } # ============================================================ # 2. BBR 拥塞控制 # ============================================================ optimize_bbr() { step "🚀 BBR 拥塞控制" local current current=$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null) info "当前拥塞算法: $current" # 检查内核是否支持 BBR if ! modprobe tcp_bbr 2>/dev/null && ! lsmod | grep -q bbr; then warning "内核不支持 BBR，跳过（建议升级内核）" add_result "❌ BBR: 内核不支持" return fi # 写入 sysctl（先去重再追加） local sysctl_file="/etc/sysctl.d/99-bbr.conf" cat > "$sysctl_file" << 'EOF' # BBR 拥塞控制 net.core.default_qdisc = fq net.ipv4.tcp_congestion_control = bbr EOF sysctl -p "$sysctl_file" &>/dev/null local after after=$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null) if [[ "$after" == "bbr" ]]; then success "BBR 已启用" add_result "✅ BBR: 已启用" else warning "BBR 写入成功但未立即生效，重启后生效" add_result "⚠️ BBR: 重启后生效" fi } # ============================================================ # 3. 内核网络参数 # ============================================================ optimize_sysctl() { step "🔧 内核网络参数调优" local sysctl_file="/etc/sysctl.d/99-vps-optimize.conf" cat > "$sysctl_file" << 'EOF' # ── 接收/发送缓冲区（WebSocket 长连接）──────────────────────── net.core.rmem_max = 67108864 net.core.wmem_max = 67108864 net.ipv4.tcp_rmem = 4096 87380 67108864 net.ipv4.tcp_wmem = 4096 65536 67108864 net.core.netdev_max_backlog = 250000 # ── 连接队列（并发连接）──────────────────────────────────────── net.core.somaxconn = 32768 net.ipv4.tcp_max_syn_backlog = 16384 # ── TIME_WAIT 优化 ───────────────────────────────────────────── net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_fin_timeout = 15 net.ipv4.tcp_max_tw_buckets = 5000 # ── WebSocket 保活 ───────────────────────────────────────────── net.ipv4.tcp_keepalive_time = 300 net.ipv4.tcp_keepalive_intvl = 30 net.ipv4.tcp_keepalive_probes = 3 # ── 其他 ─────────────────────────────────────────────────────── net.ipv4.tcp_fastopen = 3 net.ipv4.tcp_mtu_probing = 1 net.ipv4.ip_local_port_range = 10000 65535 EOF if sysctl -p "$sysctl_file" &>/dev/null; then success "内核参数写入: $sysctl_file" add_result "✅ 内核参数: 已优化" else warning "部分内核参数应用失败，请检查 $sysctl_file" add_result "⚠️ 内核参数: 部分失败" fi } # ============================================================ # 4. 文件描述符 # ============================================================ optimize_nofile() { step "📁 文件描述符限制" local limits_file="/etc/security/limits.d/99-nofile.conf" cat > "$limits_file" << 'EOF' * soft nofile 65535 * hard nofile 65535 root soft nofile 65535 root hard nofile 65535 EOF success "limits.conf 写入: $limits_file" # systemd 服务单独设置 for svc in sing-box nginx xray; do if systemctl list-unit-files "${svc}.service" &>/dev/null 2>&1 | grep -q "$svc"; then local override_dir="/etc/systemd/system/${svc}.service.d" mkdir -p "$override_dir" cat > "${override_dir}/limits.conf" << 'EOF' [Service] LimitNOFILE=65535 EOF success "systemd override 写入: ${svc}.service" fi done systemctl daemon-reload 2>/dev/null || true # 立即对当前 session 生效 ulimit -n 65535 2>/dev/null || true add_result "✅ 文件描述符: 已设置为 65535" } # ============================================================ # 5. Nginx 优化 # ============================================================ optimize_nginx() { step "🌐 Nginx 配置优化" if ! command -v nginx &>/dev/null; then warning "未检测到 nginx，跳过" add_result "❌ Nginx: 未安装" return fi # 找到 sing-box/vless 相关的 nginx 配置 local nginx_conf nginx_conf=$(find /etc/nginx/sites-available/ -type f 2>/dev/null | \ xargs grep -l "proxy_pass" 2>/dev/null | head -1) if [[ -z "$nginx_conf" ]]; then warning "未找到反代配置文件，跳过 Nginx 优化" add_result "⚠️ Nginx: 未找到配置" return fi info "目标配置文件: $nginx_conf" # 备份原配置 local backup="${nginx_conf}.bak.$(date +%Y%m%d%H%M%S)" cp "$nginx_conf" "$backup" info "已备份至: $backup" # ── 5a. 全局 nginx.conf 优化 ────────────────────────────── local nginx_main="/etc/nginx/nginx.conf" # worker_processes 改为 auto sed -i 's/worker_processes\s\+[0-9]\+/worker_processes auto/' "$nginx_main" 2>/dev/null || true # worker_connections 提升（在 events 块内） sed -i '/events\s*{/,/}/{s/worker_connections\s\+[0-9]\+/worker_connections 65535/}' "$nginx_main" 2>/dev/null || true # 写入 nginx 全局调优 snippet（不覆盖主配置） cat > /etc/nginx/conf.d/99-optimize.conf << 'EOF' # ── TCP 优化 ─────────────────────────────────────────────────── tcp_nopush on; tcp_nodelay on; sendfile on; # ── 连接超时 ─────────────────────────────────────────────────── keepalive_timeout 300s; keepalive_requests 10000; client_header_timeout 30s; client_body_timeout 30s; send_timeout 30s; # ── 缓冲 ─────────────────────────────────────────────────────── client_body_buffer_size 128k; client_max_body_size 10m; proxy_buffer_size 4k; proxy_buffers 8 4k; EOF # ── 5b. 站点配置优化（替换/追加关键指令）────────────────── # 用 python3 做精确修改，避免 sed 处理多行的麻烦 python3 - "$nginx_conf" "$NGINX_PORT" "$WS_PATH" << 'PYEOF' import sys, re conf_path = sys.argv[1] port = sys.argv[2] ws_path = sys.argv[3] with open(conf_path) as f: content = f.read() # ── SSL 优化 ─────────────────────────────────────────────────── # 替换 ssl_protocols content = re.sub(r'ssl_protocols\s+[^;]+;', 'ssl_protocols TLSv1.2 TLSv1.3;', content) # 替换 ssl_ciphers content = re.sub(r'ssl_ciphers\s+[^;]+;', 'ssl_ciphers TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256;', content) # ssl_prefer_server_ciphers off（TLS1.3 客户端优先） content = re.sub(r'ssl_prefer_server_ciphers\s+\w+;', 'ssl_prefer_server_ciphers off;', content) # session 复用 for old, new in [ (r'ssl_session_cache\s+[^;]+;', 'ssl_session_cache shared:SSL:20m;'), (r'ssl_session_timeout\s+[^;]+;', 'ssl_session_timeout 1d;'), ]: if re.search(old, content): content = re.sub(old, new, content) # 追加 ssl_session_tickets 和 ssl_buffer_size（如果没有） ssl_block_end = content.rfind('ssl_session') if 'ssl_session_tickets' not in content: content = re.sub(r'(ssl_session_timeout\s+[^;]+;)', r'\1\n ssl_session_tickets off;\n ssl_buffer_size 4k;', content) # ── WebSocket location 块优化 ────────────────────────────────── def patch_location(m): block = m.group(0) patches = { r'proxy_read_timeout\s+[^;]+;': 'proxy_read_timeout 600s;', r'proxy_send_timeout\s+[^;]+;': 'proxy_send_timeout 600s;', r'proxy_connect_timeout\s+[^;]+;': 'proxy_connect_timeout 10s;', } for pattern, replacement in patches.items(): if re.search(pattern, block): block = re.sub(pattern, replacement, block) else: # 在 proxy_buffering off; 后面追加 block = block.replace('proxy_buffering off;', f'proxy_buffering off;\n {replacement}') # 确保有 tcp_nodelay if 'tcp_nodelay' not in block: block = block.replace('proxy_buffering off;', 'proxy_buffering off;\n tcp_nodelay on;') return block content = re.sub( r'location\s+' + re.escape(ws_path) + r'\s*\{[^}]+\}', patch_location, content, flags=re.DOTALL ) with open(conf_path, 'w') as f: f.write(content) print(" Nginx 站点配置已更新") PYEOF # 测试配置 if nginx -t 2>/dev/null; then systemctl reload nginx success "Nginx 优化完成并重载" add_result "✅ Nginx: 已优化并重载" else warning "Nginx 配置测试失败，正在回滚..." cp "$backup" "$nginx_conf" systemctl reload nginx 2>/dev/null || true add_result "❌ Nginx: 优化失败已回滚" fi } # ============================================================ # 6. sing-box / xray 服务优化 # ============================================================ optimize_proxy_service() { step "⚡ 代理服务优化" local found=0 for svc in sing-box xray; do if systemctl is-active --quiet "$svc" 2>/dev/null; then info "检测到运行中的服务: $svc" systemctl restart "$svc" success "$svc 已重启（文件描述符 override 生效）" add_result "✅ ${svc}: 已重启" found=1 fi done [[ $found -eq 0 ]] && warning "未检测到运行中的 sing-box 或 xray 服务" } # ============================================================ # 7. 防火墙 + Cloudflare IP 白名单 # ============================================================ setup_cf_whitelist() { step "🛡️ Cloudflare IP 白名单" if [[ "$ENABLE_CF_WHITELIST" != "y" ]]; then info "已跳过 CF 白名单配置" add_result "⏭️ CF 白名单: 已跳过" return fi if ! command -v ufw &>/dev/null; then info "安装 ufw..." apt-get install -y -qq ufw fi # 保证 SSH 不被锁 ufw allow 22/tcp comment 'SSH' &>/dev/null ufw allow 80/tcp comment 'HTTP' &>/dev/null info "拉取 Cloudflare IP 段..." local cf_v4 cf_v6 cf_v4=$(curl -sf --max-time 10 https://www.cloudflare.com/ips-v4/ 2>/dev/null) cf_v6=$(curl -sf --max-time 10 https://www.cloudflare.com/ips-v6/ 2>/dev/null) if [[ -z "$cf_v4" ]]; then warning "拉取 CF IP 失败，使用内置 IP 段（可能不是最新）" cf_v4="173.245.48.0/20 103.21.244.0/22 103.22.200.0/22 103.31.4.0/22 141.101.64.0/18 108.162.192.0/18 190.93.240.0/20 188.114.96.0/20 197.234.240.0/22 198.41.128.0/17 162.158.0.0/15 104.16.0.0/13 104.24.0.0/14 172.64.0.0/13 131.0.72.0/22" fi # 先删除旧的 CF 规则 ufw status numbered 2>/dev/null | grep -E "CF|Cloudflare" | \ awk -F'[][]' '{print $2}' | sort -rn | \ xargs -I{} ufw --force delete {} 2>/dev/null || true # 先拒绝所有访问该端口 ufw deny "${NGINX_PORT}/tcp" comment 'deny-direct' &>/dev/null || true local count=0 while IFS= read -r ip; do [[ -z "$ip" ]] && continue ufw allow from "$ip" to any port "$NGINX_PORT" proto tcp comment 'CF' &>/dev/null && ((count++)) || true done <<< "$cf_v4" while IFS= read -r ip; do [[ -z "$ip" ]] && continue ufw allow from "$ip" to any port "$NGINX_PORT" proto tcp comment 'CF' &>/dev/null && ((count++)) || true done <<< "$cf_v6" # 开启 ufw（如果未启用） if ! ufw status | grep -q "Status: active"; then ufw --force enable &>/dev/null else ufw reload &>/dev/null fi success "已添加 ${count} 条 CF IP 规则，端口 ${NGINX_PORT} 仅允许 CF 回源" add_result "✅ CF 白名单: ${count} 条规则，端口 ${NGINX_PORT} 已锁定" # 保存 CF IP 更新脚本，供定期执行 cat > /usr/local/bin/update-cf-whitelist.sh << CFEOF #!/bin/bash # 更新 Cloudflare IP 白名单 PORT="${NGINX_PORT}" cf_v4=\$(curl -sf --max-time 10 https://www.cloudflare.com/ips-v4/ 2>/dev/null) cf_v6=\$(curl -sf --max-time 10 https://www.cloudflare.com/ips-v6/ 2>/dev/null) [[ -z "\$cf_v4" ]] && exit 1 # 删除旧规则 ufw status numbered | grep 'CF' | awk -F'[][]' '{print \$2}' | sort -rn | \\ xargs -I{} ufw --force delete {} 2>/dev/null || true # 重新添加 for ip in \$cf_v4 \$cf_v6; do [[ -n "\$ip" ]] && ufw allow from "\$ip" to any port "\$PORT" proto tcp comment 'CF' &>/dev/null done ufw reload echo "\$(date): CF 白名单已更新" CFEOF chmod +x /usr/local/bin/update-cf-whitelist.sh # 每月更新一次 echo "0 4 1 * * root /usr/local/bin/update-cf-whitelist.sh >> /var/log/cf-whitelist.log 2>&1" \ > /etc/cron.d/update-cf-whitelist success "CF IP 自动更新任务已配置（每月1号凌晨4点）" } # ============================================================ # 8. 时间同步 # ============================================================ optimize_time() { step "🕐 时间同步" if systemctl is-active --quiet systemd-timesyncd 2>/dev/null; then timedatectl set-ntp true 2>/dev/null || true success "systemd-timesyncd 已运行" add_result "✅ 时间同步: 正常" elif command -v ntpd &>/dev/null; then success "ntpd 已运行" add_result "✅ 时间同步: ntpd" else apt-get install -y -qq systemd-timesyncd 2>/dev/null timedatectl set-ntp true 2>/dev/null || true success "systemd-timesyncd 已安装并启用" add_result "✅ 时间同步: 已安装" fi info "当前时间: $(date '+%Y-%m-%d %H:%M:%S %Z')" } # ============================================================ # 9. 最终报告 # ============================================================ print_report() { step "📋 优化报告" echo "" for r in "${RESULTS[@]}"; do echo -e " $r" done echo "" echo -e " ${BOLD}当前服务状态:${NC}" for svc in nginx sing-box xray; do if systemctl list-unit-files "${svc}.service" &>/dev/null 2>&1 | grep -q "$svc"; then local status if systemctl is-active --quiet "$svc" 2>/dev/null; then echo -e " ${GREEN}✔${NC} ${svc} 运行中" else echo -e " ${RED}✘${NC} ${svc} 未运行" fi fi done echo "" echo -e " ${BOLD}BBR 验证:${NC}" echo -e " 拥塞算法: ${GREEN}$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null)${NC}" echo -e " 队列算法: ${GREEN}$(sysctl -n net.core.default_qdisc 2>/dev/null)${NC}" echo "" echo -e " ${BOLD}文件描述符:${NC}" echo -e " 当前 session: ${GREEN}$(ulimit -n)${NC}" if [[ "$ENABLE_CF_WHITELIST" == "y" ]]; then echo "" echo -e " ${BOLD}防火墙状态:${NC}" ufw status | grep -E "Status|${NGINX_PORT}" | sed 's/^/ /' fi echo "" echo -e " ${CYAN}备份文件位置: /etc/nginx/sites-available/*.bak.*${NC}" echo -e " ${CYAN}CF 白名单更新: /usr/local/bin/update-cf-whitelist.sh${NC}" echo -e " ${CYAN}手动更新 CF IP: bash /usr/local/bin/update-cf-whitelist.sh${NC}" echo "" warning "建议执行: reboot 使所有内核参数完全生效" echo "" } # ============================================================ # 主流程 # ============================================================ main() { check_root print_banner check_debian detect_existing_config collect_params optimize_bbr optimize_sysctl optimize_nofile optimize_nginx optimize_proxy_service setup_cf_whitelist optimize_time print_report } main