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feat: added app to fill a pvc in 1GB increments #24

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wjro wants to merge 9 commits from php-fill-volume into master
pull from: php-fill-volume
merge into: NationTech:master
Conversation 0 Commits 9 Files Changed 15 +88 -1
1 changed files with 88 additions and 1 deletions
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examples/lamp/php/index.php
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@ -1,3 +1,90 @@
<?php
print_r("Hello this is from PHP")
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
$host = getenv('MYSQL_HOST') ?: 'localhost';
$db = 'testfill';
$user = getenv('MYSQL_USER') ?: 'root';
$pass = getenv('MYSQL_PASSWORD') ?: '';
$charset = 'utf8mb4';
// Setup PDO
$dsn = "mysql:host=$host;charset=$charset";
$options = [
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
];
try {
$pdo = new PDO($dsn, $user, $pass, $options);
$pdo->exec("CREATE DATABASE IF NOT EXISTS `$db`");
$pdo->exec("USE `$db`");
$pdo->exec("
CREATE TABLE IF NOT EXISTS filler (
id INT AUTO_INCREMENT PRIMARY KEY,
data LONGBLOB
)
");
} catch (\PDOException $e) {
die("Database setup failed: " . $e->getMessage());
}
// Disk usage (PVC mount path)
$mountPath = '/var/lib/mysql'; // Change this if PVC is mounted elsewhere
$freeBytes = disk_free_space($mountPath);
johnride commented 2025-04-29 20:07:10 +00:00
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Mariadb / mysql is not in the same container as the PHP process. You'll have to query mariadb stats or something else.

Mariadb / mysql is not in the same container as the PHP process. You'll have to query mariadb stats or something else.
$totalBytes = disk_total_space($mountPath);
$freeGB = round($freeBytes / (1024 ** 3), 2);
$totalGB = round($totalBytes / (1024 ** 3), 2);
$usedGB = round(($totalBytes - $freeBytes) / (1024 ** 3), 2);
$message = '';
if ($_SERVER['REQUEST_METHOD'] === 'POST'&& isset($_POST['fill'])) {
$chunkSize = 1024 * 1024; // 1MB
$iterations = 1024; // 1GB total
$data = str_repeat(random_bytes(1024), 1024); // ~1MB binary blob
$stmt = $pdo->prepare("INSERT INTO filler (data) VALUES (:data)");
for ($i = 0; $i < $iterations; $i++) {
$stmt->execute([':data' => $data]);
}
clearstatcache();
$freeBytes = disk_free_space($mountPath);
$freeGB = round($freeBytes / (1024 ** 3), 2);
$usedGB = round(($totalBytes - $freeBytes) / (1024 ** 3), 2);
$message = "<p style='color: green;'>✅ 1GB inserted. Disk usage updated.</p>";
}
?>
<!DOCTYPE html>
<html>
<head>
<title>Volume Filler</title>
</head>
<body>
<h1>Kubernetes PVC Filler</h1>
<?= $message ?>
<ul>
<li>Total PVC Space: <?= $totalGB ?> GB</li>
<li>Used PVC Space: <?= $usedGB ?> GB</li>
<li>Free PVC Space: <?= $freeGB ?> GB</li>
</ul>
<form method="post">
<button name="fill" value="1" type="submit">Insert 1GB into DB</button>
</form>
</body>
</html>