#!/bin/bash
# 修复 8001 端口冲突：多个 Gunicorn 同时抢 8001 会导致全站卡死
# 日志特征: Connection in use: ('127.0.0.1', 8001)
# 用法: bash deploy/fix-gunicorn-8001-conflict.sh
set -e
DJANGO_DIR="/opt/1panel/apps/openresty/nginx/www/sites/43.142.166.152.443/django"
cd "$DJANGO_DIR"

echo "========== 修复前 =========="
pgrep -af 'gunicorn' || echo "无 gunicorn"
ss -ltnp 2>/dev/null | grep 8001 || true

echo ""
echo ">>> [1] 停 systemd 服务"
systemctl stop gunicorn-dianjing.service 2>/dev/null || true
sleep 2

echo ">>> [2] 结束所有 gunicorn（含 1Panel 误起的）"
pkill -f 'gunicorn.*a_long_dianjing' 2>/dev/null || true
pkill -f 'gunicorn -c gunicorn.conf.py' 2>/dev/null || true
sleep 3

if ss -ltn 2>/dev/null | grep -q ':8001'; then
  echo ">>> [3] 8001 仍占用，释放端口"
  fuser -k 8001/tcp 2>/dev/null || true
  sleep 2
fi

if ss -ltn 2>/dev/null | grep -q ':8001'; then
  echo "错误: 8001 仍被占用，请检查是否有 1Panel Python 自动管理未关闭"
  ss -ltnp | grep 8001 || true
  exit 1
fi

echo ">>> [4] 只由 systemd 拉起唯一一套 gunicorn"
cp deploy/systemd/gunicorn-dianjing.service /etc/systemd/system/gunicorn-dianjing.service
systemctl daemon-reload
systemctl enable gunicorn-dianjing.service
systemctl start gunicorn-dianjing.service
sleep 3

echo ""
echo "========== 修复后 =========="
systemctl is-active gunicorn-dianjing.service
pgrep -af 'gunicorn' || echo "无 gunicorn"
NG=$(pgrep -cf 'gunicorn.*a_long_dianjing' 2>/dev/null || echo 0)
echo "进程数: $NG (正常=7: 1master+6worker)"
ss -ltnp 2>/dev/null | grep 8001 || true

curl -s -o /dev/null -w "curl 8001: %{time_total}s HTTP\n" http://127.0.0.1:8001/hqhd/

echo ""
echo ">>> 最近是否还有 8001 冲突:"
grep -a 'Connection in use' /tmp/gunicorn-error.log 2>/dev/null | tail -3 || echo "无"

echo ""
echo "【必做】1Panel → 该站点 → 关闭 Python 运行环境自动管理"
echo "否则 1Panel 会再次抢 8001，全站又会卡死"