serv00部署gpt-load && Passenger进程保活

banlan2025-08-182025-12-07

0.前提，部署到`make run`那一步，还未进行pm2保活

git clone https://github.com/tbphp/gpt-load.git
cd gpt-load
go mod tidy
# 创建配置
cp .env.example .env
# 登陆serv00开放端口
make run
# 会打印出启动成功日志

pm2保活（可选）
go build -o gpt-load-server .
pm2 start ./gpt-load-server --name gpt-load

1.开始，参考下面讲的passenger保活进程，

https://github.com/hkfires/Keep-Serv00-Alive

2.`app.js`代码：

const express = require("express");
const { exec } = require("child_process");
const fs = require("fs");
const path = require("path");
const app = express();

// ================== 配置区域 ==================
const port = process.env.PORT || 3000;
const USER = "username";
const TARGET_PORT = "30345";
const WORK_DIR = `/home/${USER}/gpt-load`;
const CMD = `./gpt-load-server`;
const PROCESS_NAME = "gpt-load-server";

// 日志文件路径 (在 public_nodejs 目录下)
const LOG_FILE = path.join(__dirname, 'keeper.log');

// 🛑 新增：暂停开关文件路径 (只要这个文件存在，脚本就不干活)
const STOP_FILE = path.join(__dirname, 'stop.txt');
// ============================================

// 自定义日志函数：同时输出到控制台和文件
function log(message) {
    const time = new Date().toLocaleString();
    const logMsg = `[${time}] ${message}\n`;
    
    // 1. 尝试写入文件
    try {
        fs.appendFileSync(LOG_FILE, logMsg);
    } catch (e) {
        // 如果写文件失败，至少打印到 stderr
        console.error(`Log write error: ${e.message}`);
    }
    
    // 2. 输出到控制台 (保留标准输出)
    console.log(logMsg.trim());
}

function keepAlive() {
    // ============================================================
    // 🛑 新增：维护模式检测
    // 如果目录下存在 stop.txt，直接跳过后续所有检查
    if (fs.existsSync(STOP_FILE)) {
        // 为了防止日志刷屏，这里可以选择不打印，或者每次跳过时打印
        // 这里设置为每次周期都记录一下，方便确认状态
        log("🛑 Maintenance Mode Active (stop.txt found). Skipping checks.");
        return;
    }
    // ============================================================

    // 1. 核心检测：查端口 (保持原有逻辑)
    exec(`sockstat -4 -l -P tcp | grep ${TARGET_PORT}`, (err, stdout) => {
        if (stdout && stdout.includes(TARGET_PORT)) {
            log(`Port ${TARGET_PORT} is UP. Service is healthy.`);
        } else {
            log(`Port ${TARGET_PORT} is DOWN. Initiating restart sequence...`);
            
            // 2. 清理旧进程
            log(`Cleaning up any stuck '${PROCESS_NAME}' processes...`);
            exec(`pkill -f "${PROCESS_NAME}"`, () => {
                
                // 3. 启动新进程
                log(`Starting new instance...`);
                // 注意：gpt-load 自身的日志依然写到它自己的 gpt-load.log 里
                exec(`cd ${WORK_DIR} && ${CMD} > gpt-load.log 2>&1 &`, (startErr) => {
                    if (startErr) log(`Start failed: ${startErr}`);
                    else log(`Start command sent successfully.`);
                });
            });
        }
    });
}

// 启动时立即检查
log("Keeper Service Started.");
keepAlive();

// 每 60 秒检查一次
setInterval(keepAlive, 60 * 1000);

// 修改：Web 访问时也能看到状态
app.get("/", (req, res) => {
    if (fs.existsSync(STOP_FILE)) {
        res.send("🛑 Service is in MAINTENANCE MODE (stop.txt detected).");
    } else {
        res.send(`✅ Keeper is watching port ${TARGET_PORT}`);
    }
});

app.listen(port, () => log(`Keeper listening on port ${port}`));

部分网路节点存在非标准端口阻断的问题，导致访问502
新的app.js，转发端口，来实现纯域名访问

const express = require("express");
const { exec } = require("child_process");
const fs = require("fs");
const path = require("path");
const { createProxyMiddleware } = require("http-proxy-middleware"); // 引入代理插件
const app = express();

// ================== 配置区域 ==================
const port = process.env.PORT || 3000;
const USER = "username";
const TARGET_PORT = "30345";
const WORK_DIR = `/home/${USER}/gpt-load`;
const CMD = `./gpt-load-server`;
const PROCESS_NAME = "gpt-load-server";

// 日志文件
const LOG_FILE = path.join(__dirname, 'keeper.log');
// 暂停开关
const STOP_FILE = path.join(__dirname, 'stop.txt');
// ============================================

function log(message) {
    const time = new Date().toLocaleString();
    const logMsg = `[${time}] ${message}\n`;
    try { fs.appendFileSync(LOG_FILE, logMsg); } catch (e) {}
    console.log(logMsg.trim());
}

function keepAlive() {
    if (fs.existsSync(STOP_FILE)) {
        log("🛑 Maintenance Mode Active (stop.txt found). Skipping checks.");
        return; 
    }

    exec(`sockstat -4 -l -P tcp | grep ${TARGET_PORT}`, (err, stdout) => {
        if (stdout && stdout.includes(TARGET_PORT)) {
            log(`Port ${TARGET_PORT} is UP. Service is healthy.`);
        } else {
            log(`Port ${TARGET_PORT} is DOWN. Initiating restart sequence...`);
            log(`Cleaning up any stuck '${PROCESS_NAME}' processes...`);
            exec(`pkill -f "${PROCESS_NAME}"`, () => {
                log(`Starting new instance...`);
                exec(`cd ${WORK_DIR} && ${CMD} > gpt-load.log 2>&1 &`, (startErr) => {
                    if (startErr) log(`Start failed: ${startErr}`);
                    else log(`Start command sent successfully.`);
                });
            });
        }
    });
}

// 启动保活逻辑
log("Keeper Service Started.");
keepAlive();
setInterval(keepAlive, 60 * 1000);

// ================== 路由配置 ==================

// 1. 特殊页面：查看保活状态 (访问 /keeper-status)
app.get("/keeper-status", (req, res) => {
    if (fs.existsSync(STOP_FILE)) {
        res.send("🛑 Service is in MAINTENANCE MODE (stop.txt detected).");
    } else {
        res.send(`✅ Keeper is watching port ${TARGET_PORT}. Service acts as Reverse Proxy.`);
    }
});

// 2. 反向代理：把所有其他请求转发给 gpt-load (30345)
// 这样你直接访问域名，就等于访问了 30345，但不用担心代理节点屏蔽端口
app.use("/", createProxyMiddleware({
    target: `http://127.0.0.1:${TARGET_PORT}`,
    changeOrigin: true,
    ws: true, // 支持 WebSocket (如果 gpt-load 需要)
    onError: (err, req, res) => {
        res.status(502).send(`
            <h1>502 Bad Gateway</h1>
            <p>Keeper is running, but gpt-load-server (Port ${TARGET_PORT}) seems down or starting.</p>
            <p>Check <a href="/keeper-status">/keeper-status</a> for details.</p>
        `);
    }
}));

app.listen(port, () => log(`Keeper & Proxy listening on port ${port}`));

3.启动程序（要以绝对路径启动，不然……app.js没办法重启gpt-load-server）

启动gpt-load-server

1 2	cd /home/username/gpt-load nohup ./gpt-load-server > gpt-load.log 2>&1 &

~~启动app.js~~（在serv00网站restart就行，会自动生成keeper.log）

~~```~~
~~cd /home/username/domains/username.serv00.net/public_nodejs~~
~~nohup node app.js > app.log 2>&1 &~~
~~```~~

4.验证

手动杀掉gpt-load-server

1	pkill -f gpt-load-server

在public_nodejs目录

1 2	[id@s9]:<~/domains/id.serv00.net/public_nodejs>$ pkill -f gpt-load-server [id@s9]:<~/domains/id.serv00.net/public_nodejs>$ tail -f keeper.log

~~查看app.log~~ keeper.log

1	tail -f keeper.log

显示下面则成功：
image|690x236

5.暂停保活（开启维护模式）：

进入app.js所在目录创建 stop.txt 文件：

1	touch stop.txt

恢复保活（关闭维护模式）：

删除 stop.txt 文件：

1	rm stop.txt

PS：最简单的还是pm2保活，官方也没看到说禁止，说的是最好用passenger，访问我用的域名+端口，可以自己试试passenger反代去掉端口