aktaliosieren
This commit is contained in:
343
question_GPT.txt
Executable file
343
question_GPT.txt
Executable file
@@ -0,0 +1,343 @@
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Eine WebPage die den Status vom Netzwerk und Docker-Containern angeben soll.
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==
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NodeJS: Server.js
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==========================
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const express = require("express");
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const pool = require("./db");
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const scheduleChecks = require("./scheduler");
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const runCheck = require("./checkRunner");
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const app = express();
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app.set("view engine", "ejs");
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app.use(express.static("public"));
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app.get("/", async (req, res) => {
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const { rows } = await pool.query("SELECT * FROM checks ORDER BY id");
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res.render("index", { checks: rows });
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});
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app.post("/run/:id", async (req, res) => {
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const checkId = req.params.id;
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const { rows } = await pool.query("SELECT * FROM checks WHERE id = $1", [checkId]);
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if (rows.length === 0) {
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return res.status(404).send("Check not found");
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}
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const check = rows[0];
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const result = await runCheck(check);
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await pool.query(
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`INSERT INTO results (check_id, status, message, duration_ms)
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VALUES ($1,$2,$3,$4)`,
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[check.id, result.status, result.message, result.duration]
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);
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await pool.query(
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`UPDATE checks SET last_run = NOW(), last_status = $1 WHERE id = $2`,
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[result.status, check.id]
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);
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res.redirect("/");
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});
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app.listen(3000, async () => {
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console.log("Server läuft auf Port 3000");
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await scheduleChecks();
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});
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==
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NodeJS: scheduler.js
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=============================================
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const cron = require("node-cron");
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const pool = require("./db");
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const runCheck = require("./checkRunner");
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async function scheduleChecks() {
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const { rows } = await pool.query("SELECT * FROM checks WHERE active = true");
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rows.forEach(check => {
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cron.schedule(`*/${check.schedule_seconds} * * * * *`, async () => {
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const result = await runCheck(check);
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await pool.query(
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`INSERT INTO results (check_id, status, message, duration_ms)
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VALUES ($1,$2,$3,$4)`,
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[check.id, result.status, result.message, result.duration]
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);
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await pool.query(
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`UPDATE checks SET last_run = NOW(), last_status = $1 WHERE id = $2`,
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[result.status, check.id]
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);
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});
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});
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}
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module.exports = scheduleChecks;
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==
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nodeJS: db.js
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====================================================
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const { Pool } = require("pg");
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module.exports = new Pool({
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host: process.env.DB_HOST,
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user: process.env.DB_USER,
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password: process.env.DB_PASSWORD,
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database: process.env.DB_NAME,
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port: process.env.DB_PORT
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});
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==
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nodeJS: dockerApi.js
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===============================================================
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const http = require("http");
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function dockerRequest(path) {
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return new Promise((resolve, reject) => {
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const options = {
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socketPath: "/var/run/docker.sock",
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path,
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method: "GET"
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};
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const req = http.request(options, (res) => {
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let data = "";
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res.on("data", chunk => data += chunk);
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res.on("end", () => {
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try {
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resolve(JSON.parse(data));
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} catch {
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resolve(data);
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}
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});
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});
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req.on("error", reject);
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req.end();
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});
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}
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async function isContainerRunning(name) {
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try {
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const data = await dockerRequest(`/containers/${name}/json`);
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return data.State?.Running === true;
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} catch {
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return false;
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}
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}
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async function networkContainsContainer(networkName, containerName) {
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try {
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const data = await dockerRequest(`/networks/${networkName}`);
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if (!data.Containers) return false;
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return Object.values(data.Containers)
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.some(c => c.Name === containerName);
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} catch {
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return false;
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}
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}
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module.exports = { isContainerRunning, networkContainsContainer };
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==
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NodeJS: checkRunner
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====================================================
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const { spawn } = require("child_process");
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const path = require("path");
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const dockerApi = require("./dockerApi");
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const CHECKS_DIR = path.join(__dirname, "checks");
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async function runCheck(check) {
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const start = Date.now();
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if (check.type === "docker_container") {
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const result = await dockerApi.isContainerRunning(check.target);
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return {
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status: result ? "OK" : "FAIL",
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message: `Container ${check.target} running: ${result}`,
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duration: Date.now() - start
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};
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}
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if (check.type === "docker_network") {
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const [network, container] = check.target.split(",");
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const result = await dockerApi.networkContainsContainer(network, container);
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return {
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status: result ? "OK" : "FAIL",
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message: `Container ${container} in network ${network}: ${result}`,
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duration: Date.now() - start
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};
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}
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if (check.type === "script") {
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if (!check.script_name) {
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return {
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status: "FAIL",
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message: "No script_name defined",
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duration: Date.now() - start
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};
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}
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return new Promise((resolve) => {
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const scriptPath = path.join(CHECKS_DIR, check.script_name);
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const child = spawn("sh", [scriptPath], {
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timeout: (check.timeout_seconds || 10) * 1000
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});
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child.on("close", (code) => {
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resolve({
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status: code === 0 ? "OK" : "FAIL",
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message: `Exit code: ${code}`,
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duration: Date.now() - start
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});
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});
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});
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}
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}
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module.exports = runCheck;
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==
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index.ejs
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============================
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<!DOCTYPE html>
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<html>
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<head>
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<title>Docker Info Dashboard</title>
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<link rel="stylesheet" href="/style.css">
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</head>
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<body>
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<h1>System Status</h1>
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<table>
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<tr>
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<th>ID</th>
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<th>Name</th>
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<th>Status</th>
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<th>Last Run</th>
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<th>Action</th>
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</tr>
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<% checks.forEach(c => { %>
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<tr>
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<td><%= c.id %></td>
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<td><%= c.name %></td>
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<td class="<%= c.last_status === 'OK' ? 'ok' : 'fail' %>">
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<%= c.last_status || 'N/A' %>
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</td>
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<td><%= c.last_run || 'N/A' %></td>
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<td>
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<form method="POST" action="/run/<%= c.id %>" style="margin:0;">
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<button type="submit">Run-Test</button>
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</form>
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</td>
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</tr>
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<% }) %>
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</table>
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</body>
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</html>
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==
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checks/check_http_google.sh
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=============================
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#!/bin/sh
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wget -q --spider https://google.com
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exit $?
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==
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DB
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===================================
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CREATE TABLE checks (
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id SERIAL PRIMARY KEY,
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name TEXT NOT NULL,
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type TEXT NOT NULL, -- script | docker_container | docker_network
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description TEXT,
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target TEXT,
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script_name TEXT,
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schedule_seconds INTEGER DEFAULT 60,
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timeout_seconds INTEGER DEFAULT 20,
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active BOOLEAN DEFAULT TRUE,
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last_run TIMESTAMP,
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last_status TEXT
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);
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CREATE TABLE results (
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id SERIAL PRIMARY KEY,
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check_id INTEGER REFERENCES checks(id) ON DELETE CASCADE,
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run_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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status TEXT,
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message TEXT,
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duration_ms INTEGER
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);
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INSERT INTO checks (name, type, description, target)
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VALUES
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('Google HTTP', 'script', 'Prüft google.com', NULL),
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('Postgres Container Running', 'docker_container', 'Ist Postgres Container aktiv?', 'info-postgres'),
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('Default Network contains Postgres', 'docker_network', 'Ist Postgres im default Netzwerk?', 'bridge');
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==
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Docker-compose.yaml
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=========================================
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services:
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app:
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image: node:20-alpine
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container_name: info-node-app
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working_dir: /app
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command: sh -c "npm install && node server.js"
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volumes:
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- ./app:/app
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- ./checks:/app/checks
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- /var/run/docker.sock:/var/run/docker.sock
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ports:
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- "3000:3000"
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depends_on:
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- db
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environment:
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DB_HOST: db
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DB_USER: postgres
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DB_PASSWORD: postgres
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DB_NAME: infodb
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DB_PORT: 5432
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restart: unless-stopped
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db:
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image: postgres:16-alpine
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container_name: info-postgres
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restart: unless-stopped
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environment:
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POSTGRES_USER: postgres
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POSTGRES_PASSWORD: postgres
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POSTGRES_DB: infodb
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volumes:
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- ./pgdata:/var/lib/postgresql/data
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- ./db/init.sql:/docker-entrypoint-initdb.d/init.sql
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ports:
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- "5432:5432"
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====================================
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====================================
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====================================
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Reference in New Issue
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