NationTech/harmony
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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 +23 -32
2 changed files with 23 additions and 32 deletions
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34
examples/lamp/php/index.php
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@ -3,14 +3,12 @@
ini_set('display_errors', 1);
error_reporting(E_ALL);
// Load dynamic secrets from environment
$host = getenv('MYSQL_HOST') ?: '';
$user = getenv('MYSQL_USER') ?: 'root';
$pass = getenv('MYSQL_PASSWORD') ?: '';
$db = 'testfill';
$charset = 'utf8mb4';
// Connect to MariaDB
$dsn = "mysql:host=$host;charset=$charset";
$options = [
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
@ -31,22 +29,26 @@ try {
die("❌ DB connection failed: " . $e->getMessage());
}
// Get database size from information_schema
try {
function getDbStats($pdo, $db) {
$stmt = $pdo->query("
SELECT ROUND(SUM(data_length + index_length) / 1024 / 1024 / 1024, 2) AS total_size_gb
SELECT
ROUND(SUM(data_length + index_length) / 1024 / 1024 / 1024, 2) AS total_size_gb,
SUM(table_rows) AS total_rows
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.
FROM information_schema.tables
WHERE table_schema = 'testfill'
WHERE table_schema = '$db'
");
$dbSize = $stmt->fetch()['total_size_gb'] ?? '0';
} catch (Exception $e) {
$dbSize = 'N/A';
$result = $stmt->fetch();
$sizeGb = $result['total_size_gb'] ?? '0';
$rows = $result['total_rows'] ?? '0';
$avgMb = ($rows > 0) ? round(($sizeGb * 1024) / $rows, 2) : 0;
return [$sizeGb, $rows, $avgMb];
}
list($dbSize, $rowCount, $avgRowMb) = getDbStats($pdo, $db);
$message = '';
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['fill'])) {
// Insert ~1GB of binary data
$iterations = 1024;
$data = str_repeat(random_bytes(1024), 1024); // 1MB
$stmt = $pdo->prepare("INSERT INTO filler (data) VALUES (:data)");
@ -55,13 +57,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['fill'])) {
$stmt->execute([':data' => $data]);
}
// Recalculate DB size
$stmt = $pdo->query("
SELECT ROUND(SUM(data_length + index_length) / 1024 / 1024 / 1024, 2) AS total_size_gb
FROM information_schema.tables
WHERE table_schema = 'testfill'
");
$dbSize = $stmt->fetch()['total_size_gb'] ?? '0';
list($dbSize, $rowCount, $avgRowMb) = getDbStats($pdo, $db);
$message = "<p style='color: green;'>✅ 1GB inserted into MariaDB successfully.</p>";
}
@ -76,7 +72,9 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['fill'])) {
<h1>MariaDB Storage Filler</h1>
<?= $message ?>
<ul>
<li><strong>MariaDB Used Size:</strong> <?= $dbSize ?> GB</li>
<li><strong>📦 MariaDB Used Size:</strong> <?= $dbSize ?> GB</li>
<li><strong>📊 Total Rows:</strong> <?= $rowCount ?></li>
<li><strong>📐 Average Row Size:</strong> <?= $avgRowMb ?> MB</li>
</ul>
<form method="post">

13
harmony/src/modules/lamp.rs
View File

@ -115,16 +115,9 @@ impl<T: Topology + K8sclient + HelmCommand> Interpret<T> for LAMPInterpret {
},
{
"name": "MYSQL_HOST",
"value": "harmony-lamp-demo-database-mariadb"
"value": secret_name
},
{
"name": "MYSQL_DATABASE",
"value": "testfill"
},
{
"name": "MYSQL_USER",
"value": "root"
}]),
]),
};
info!("Deploying score {deployment_score:#?}");
@ -272,7 +265,7 @@ opcache.fast_shutdown=1
dockerfile.push(RUN::from(
"echo 'PassEnv MYSQL_PASSWORD' >> /etc/apache2/sites-available/000-default.conf \
&& echo 'PassEnv MYSQL_USER' >> /etc/apache2/sites-available/000-default.conf \
&& echo 'PassEnv MYSQL_HOST' >> /etc/apache2/sites-available/000-default.conf"
&& echo 'PassEnv MYSQL_HOST' >> /etc/apache2/sites-available/000-default.conf",
));
// Create a dedicated user for running Apache