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server.js
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server.js
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const url = process.env.RENDER_EXTERNAL_URL;
const port = process.env.PORT || 3000;
const express = require("express");
const app = express();
var exec = require("child_process").exec;
const os = require("os");
const { createProxyMiddleware } = require("http-proxy-middleware");
var request = require("request");
var fs = require("fs");
var path = require("path");
app.get("/", function (req, res) {
res.send("hello world");
});
//获取系统进程表
app.get("/status", function (req, res) {
let cmdStr = "pm2 list; ps -ef";
exec(cmdStr, function (err, stdout, stderr) {
if (err) {
res.type("html").send("<pre>命令行执行错误:\n" + err + "</pre>");
} else {
res.type("html").send("<pre>获取守护进程和系统进程表:\n" + stdout + "</pre>");
}
});
});
//获取系统监听端口
app.get("/listen", function (req, res) {
let cmdStr = "ss -nltp";
exec(cmdStr, function (err, stdout, stderr) {
if (err) {
res.type("html").send("<pre>命令行执行错误:\n" + err + "</pre>");
} else {
res.type("html").send("<pre>获取系统监听端口:\n" + stdout + "</pre>");
}
});
});
//获取节点数据
app.get("/list", function (req, res) {
let cmdStr = "bash argo.sh";
exec(cmdStr, function (err, stdout, stderr) {
if (err) {
res.type("html").send("<pre>命令行执行错误:\n" + err + "</pre>");
}
else {
res.type("html").send("<pre>节点数据:\n\n" + stdout + "</pre>");
}
});
});
//获取系统版本、内存信息
app.get("/info", function (req, res) {
let cmdStr = "cat /etc/*release | grep -E ^NAME";
exec(cmdStr, function (err, stdout, stderr) {
if (err) {
res.send("命令行执行错误:" + err);
}
else {
res.send(
"命令行执行结果:\n" +
"Linux System:" +
stdout +
"\nRAM:" +
os.totalmem() / 1000 / 1000 +
"MB"
);
}
});
});
//文件系统只读测试
app.get("/test", function (req, res) {
fs.writeFile("./test.txt", "这里是新创建的文件内容!", function (err) {
if (err) {
res.send("创建文件失败,文件系统权限为只读:" + err);
}
else {
res.send("创建文件成功,文件系统权限为非只读:");
}
});
});
// keepalive begin
//web保活
function keep_web_alive() {
// 请求主页,保持唤醒
exec("curl -m8 " + url, function (err, stdout, stderr) {
if (err) {
console.log("保活-请求主页-命令行执行错误:" + err);
}
else {
console.log("保活-请求主页-命令行执行成功,响应报文:" + stdout);
}
});
}
setInterval(keep_web_alive, 10 * 1000);
app.use(
"/",
createProxyMiddleware({
changeOrigin: true, // 默认false,是否需要改变原始主机头为目标URL
onProxyReq: function onProxyReq(proxyReq, req, res) {},
pathRewrite: {
// 请求中去除/
"^/": "/"
},
target: "http://127.0.0.1:8080/", // 需要跨域处理的请求地址
ws: true // 是否代理websockets
})
);
//启动核心脚本运行web,哪吒和argo
exec("bash entrypoint.sh", function (err, stdout, stderr) {
if (err) {
console.error(err);
return;
}
console.log(stdout);
});
app.listen(port, () => console.log(`Example app listening on port ${port}!`));