Delete vps_optimize.sh

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mike 2026-05-09 16:05:56 +08:00
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#!/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="$detected_domain"
info "$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 offTLS1.3 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